nodered flow upload

Merge pull request #15 from dkwstas/public_api
Public api
2026-05-25 06:01:47 +03:00 · 2026-05-25 05:58:36 +03:00 · 2026-05-25 05:57:35 +03:00 · 2026-05-25 05:55:43 +03:00 · 2026-05-25 05:55:04 +03:00 · 2026-05-25 05:54:37 +03:00
24 changed files with 2311 additions and 83 deletions
@@ -1,21 +1,62 @@
 # System Architecture

 ## Overview
-Describe the project at a high level.
+OfficeSense is a Smart Office Presence system that detects user presence and identifies the room where each user is located using Bluetooth Low Energy (BLE) technology. Users carry BLE tags that periodically broadcast pseudonymized identifiers, while BLE scanners installed in different rooms detect these signals and forward the data to a Raspberry Pi for processing.
+
+The system follows a privacy-by-design approach by using identifiers instead of personal data during communication. In addition to BLE-based presence detection, a camera connected to the Raspberry Pi performs face-recognition-based authentication to verify that the detected BLE tag belongs to the actual user.
+
+The architecture combines edge computing, real-time processing, and lightweight storage technologies to provide low-latency monitoring, room occupancy tracking, and secure user authentication through real-time dashboards.

 ## Components
- sensors / input devices
- processing node
- communication
- storage
- dashboard / app
- actuators / notifications
+- BLE Tags (Seeed Studio XIAO ESP32-C6)
+- BLE Scanners (Waveshare ESP32-S3 Zero)
+- USB Camera
+- Processing Node (Raspberry Pi)
+- Communication (BLE, WiFi, MQTT, HTTP, NGSI-LD)
+- Storage (SQLite, Redis, Optional InfluxDB)
+- Dashboard (Node-RED, AdminJS, Optional Grafana)

 ## Data Flow
-Describe how data moves through the system.
+1. A BLE tag periodically broadcasts a pseudonymized UUID.
+2. Nearby BLE scanners receive the signal and measure RSSI values.
+3. The scanners:
+     - validate UUIDs,
+     - apply EMA filtering to RSSI values,
+     - cache validation responses,
+     - package the data and publish to the MQTT broker over WiFi.
+4. The Raspberry Pi receives MQTT messages and processes them.
+5. The system estimates the user’s room based on strongest RSSI values.
+6. When a new presence event occurs:
+    - the camera is triggered,
+    - image frames are captured,
+    - the face recognition service verifies the user identity.
+7. The system compares:
+    - BLE tag identity
+    - face recognition identity
+8. The authentication result and room location are stored in Redis.
+9. Persistent information is stored in SQLite.
+10. Backend APIs provide data to dashboards for real-time visualization.
+11. If no BLE signal is received for a predefined timeout period, the user is automatically marked as absent.

 ## Decisions and Tradeoffs
-Explain key design choices.
+- Edge Computing with Raspberry Pi
+  - Reduces latency
+  - Minimizes cloud dependency
+  - Improves privacy and reliability
+- Hybrid Storage Architecture
+  - SQLite for reliable persistent storage
+  - Redis for fast real-time operations
+- Event-Driven Processing
+  - BLE detections trigger processing only when needed
+  - Reduces unnecessary computation
+- Privacy-by-Design
+  - Uses pseudonymized UUIDs instead of direct user identities
+- MQTT Communication
+  - Lightweight and suitable for IoT environments
+  - Supports asynchronous communication
+
+- RSSI-based localization is less accurate than more advanced positioning systems
+- Face recognition increases security but also adds computational overhead

 ## Validation Plan
 Describe how you will test the system.
@@ -1,7 +1,5 @@
 # Weekly Progress Log

-Update this file every week.
-
 ## Week 1
 ### Completed
 - Repository created
@@ -18,19 +16,44 @@ Update this file every week.
 - Finalize architecture
 - Create first Issues

-### Team Contribution
- Student 1:
- Student 2:
-
 ## Week 2
 ### Completed
+- Full BLE Tag code

 ### In Progress

 ### Problems / Risks

 ### Next Steps
+- UUID modification during Runtime

-### Team Contribution
- Student 1:
- Student 2:
+## Week 3
+### Completed
+- Full BLE Scanner code
+- SQLite schema with Prisma ORM
+- UUID lookup for public API
+- Connected and tested functionality of all equipment
+
+### In Progress
+- Core script to receive MQTT data, process and store in Redis
+- NGSI-LD data for public API
+- Admin API with CRUD functions
+
+### Problems / Risks
+- WiFi won't reconnect
+- no auth to use public API
+
+### Next Steps
+- WiFi self-healing and MQTT reconnection & testing
+
+## Week 4
+### Completed
+- Tag & Scanner CLI for configuration & persistent config
+- Core script (MQTT, location estimation, Store in Redis)
+
+### In Progress
+- NGSI-LD data for public API
+- Admin API with CRUD functions
+
+### Next Steps
+- Add verification with camera in core script
@@ -0,0 +1,352 @@
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+        "ui": "7d0f4d8165214cca",
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+        "icon": "home",
+        "layout": "grid",
+        "theme": "f49a05b173b6cac3",
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+                "px": "0",
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+                "px": "576",
+                "cols": "6"
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+                "px": "768",
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@@ -1121,6 +1233,18 @@
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+      "resolved": "https://registry.npmjs.org/worker-factory/-/worker-factory-7.0.49.tgz",
+      "integrity": "sha512-lW7tpgy6aUv2dFsQhv1yv+XFzdkCf/leoKRTGMPVK5/die6RrUjqgJHJf556qO+ZfytNG6wPXc17E8zzsOLUDw==",
+      "license": "MIT",
+      "dependencies": {
+        "@babel/runtime": "^7.29.2",
+        "fast-unique-numbers": "^9.0.27",
+        "tslib": "^2.8.1"
+      }
+    },
+    "node_modules/worker-timers": {
+      "version": "8.0.31",
+      "resolved": "https://registry.npmjs.org/worker-timers/-/worker-timers-8.0.31.tgz",
+      "integrity": "sha512-ngkq5S6JuZyztom8tDgBzorLo9byhBMko/sXfgiUD945AuzKGg1GCgDMCC3NaYkicLpGKXutONM36wEX8UbBCA==",
+      "license": "MIT",
+      "dependencies": {
+        "@babel/runtime": "^7.29.2",
+        "tslib": "^2.8.1",
+        "worker-timers-broker": "^8.0.16",
+        "worker-timers-worker": "^9.0.14"
+      }
+    },
+    "node_modules/worker-timers-broker": {
+      "version": "8.0.16",
+      "resolved": "https://registry.npmjs.org/worker-timers-broker/-/worker-timers-broker-8.0.16.tgz",
+      "integrity": "sha512-JyP3AvUGyPGbBGW7XiUewm2+0pN/aYo1QpVf5kdXAfkDZcN3p7NbWrG6XnyDEpDIvfHk/+LCnOW/NsuiU9riYA==",
+      "license": "MIT",
+      "dependencies": {
+        "@babel/runtime": "^7.29.2",
+        "broker-factory": "^3.1.14",
+        "fast-unique-numbers": "^9.0.27",
+        "tslib": "^2.8.1",
+        "worker-timers-worker": "^9.0.14"
+      }
+    },
+    "node_modules/worker-timers-worker": {
+      "version": "9.0.14",
+      "resolved": "https://registry.npmjs.org/worker-timers-worker/-/worker-timers-worker-9.0.14.tgz",
+      "integrity": "sha512-/qF06C60sXmSLfUl7WglvrDIbspmPOM8UrG63Dnn4bi2x4/DfqHS/+dxF5B+MdHnYO5tVuZYLHdAodrKdabTIg==",
+      "license": "MIT",
+      "dependencies": {
+        "@babel/runtime": "^7.29.2",
+        "tslib": "^2.8.1",
+        "worker-factory": "^7.0.49"
+      }
+    },
    "node_modules/wrappy": {
      "version": "1.0.2",
      "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
      "integrity": "sha512-l4Sp/DRseor9wL6EvV2+TuQn63dMkPjZ/sp9XkghTEbV9KlPS1xUsZ3u7/IQO4wxtcFB4bgpQPRcR3QCvezPcQ==",
      "license": "ISC"
    },
+    "node_modules/ws": {
+      "version": "8.21.0",
+      "resolved": "https://registry.npmjs.org/ws/-/ws-8.21.0.tgz",
+      "integrity": "sha512-Vsp28b7DRcimFQvrqu2Wek3z1iYxDCWqHYB8Qsnk/S4RfaCQzPGPyBNuVjJV3cd6UiKtUtp6sNM77gWvzcCH+g==",
+      "license": "MIT",
+      "engines": {
+        "node": ">=10.0.0"
+      },
+      "peerDependencies": {
+        "bufferutil": "^4.0.1",
+        "utf-8-validate": ">=5.0.2"
+      },
+      "peerDependenciesMeta": {
+        "bufferutil": {
+          "optional": true
+        },
+        "utf-8-validate": {
+          "optional": true
+        }
+      }
+    },
    "node_modules/zeptomatch": {
      "version": "2.1.0",
      "resolved": "https://registry.npmjs.org/zeptomatch/-/zeptomatch-2.1.0.tgz",
@@ -23,6 +23,8 @@
    "@prisma/adapter-better-sqlite3": "^7.8.0",
    "@prisma/client": "^7.8.0",
    "dotenv": "^17.4.2",
-    "express": "^5.2.1"
+    "express": "^5.2.1",
+    "mqtt": "^5.15.1",
+    "redis": "^5.12.1"
  }
 }
@@ -0,0 +1,20 @@
+-- CreateTable
+CREATE TABLE "Room" (
+    "id" TEXT NOT NULL PRIMARY KEY,
+    "nameame" TEXT NOT NULL
+);
+
+-- RedefineTables
+PRAGMA defer_foreign_keys=ON;
+PRAGMA foreign_keys=OFF;
+CREATE TABLE "new_User" (
+    "id" TEXT NOT NULL PRIMARY KEY,
+    "firstName" TEXT NOT NULL,
+    "lastName" TEXT NOT NULL,
+    "faceEmbedding" BLOB
+);
+INSERT INTO "new_User" ("faceEmbedding", "firstName", "id", "lastName") SELECT "faceEmbedding", "firstName", "id", "lastName" FROM "User";
+DROP TABLE "User";
+ALTER TABLE "new_User" RENAME TO "User";
+PRAGMA foreign_keys=ON;
+PRAGMA defer_foreign_keys=OFF;
@@ -0,0 +1,19 @@
+/*
+  Warnings:
+
+  - You are about to drop the column `nameame` on the `Room` table. All the data in the column will be lost.
+  - Added the required column `name` to the `Room` table without a default value. This is not possible if the table is not empty.
+
+*/
+-- RedefineTables
+PRAGMA defer_foreign_keys=ON;
+PRAGMA foreign_keys=OFF;
+CREATE TABLE "new_Room" (
+    "id" TEXT NOT NULL PRIMARY KEY,
+    "name" TEXT NOT NULL
+);
+INSERT INTO "new_Room" ("id") SELECT "id" FROM "Room";
+DROP TABLE "Room";
+ALTER TABLE "new_Room" RENAME TO "Room";
+PRAGMA foreign_keys=ON;
+PRAGMA defer_foreign_keys=OFF;
@@ -19,4 +19,9 @@ model Tag {
  id     String @id @default(uuid())
  userId String @unique
  user   User   @relation(fields: [userId], references: [id])
-}
+}
+
+model Room {
+  id   String @id @default(uuid())
+  name String
+}
@@ -0,0 +1,10 @@
+import express from "express";
+import { getEntities, getEntitiesOfType, getEntity } from "./livedata.controller.js";
+
+const router = express.Router();
+
+router.get("/entities", getEntities);
+router.get("/entities", getEntitiesOfType);
+router.get("/entities/:urn", getEntity);
+
+export default router;
@@ -0,0 +1,172 @@
+import type { Request, Response, NextFunction } from "express";
+import { getActiveUserData, getRedisRoomData, type RedisRoomData, type RedisUserData } from "./livedata.repository.js";
+import { prisma } from "../../lib/prisma.js";
+
+interface Params {
+    urn: string;
+}
+
+type Relationship = {
+    type: "Relationship";
+    object: string;
+};
+
+type Property<T = any> = {
+    type: "Property";
+    value: T;
+};
+
+interface Entity {
+    id: string;
+    type: string;
+    name: {
+        type: "Property";
+        value: string;
+    };
+}
+
+interface User extends Entity {
+    type: "User";
+    locatedIn: Relationship;
+    rssi: Property<number>;
+    authenticationStatus: Property<string>;
+    observedAt: Property<string>;
+}
+
+interface Room extends Entity {
+    type: "Room";
+    occupancy: Property<number>;
+}
+
+function convertToNGSIUser(user: RedisUserData): User {
+    return {
+        id: `urn:ngsi-ld:User:${user.userID}`,
+        type: "User",
+        name: {
+            type: "Property",
+            value: user.name
+        },
+        locatedIn: {
+            type: "Relationship",
+            object: user.room
+        },
+        rssi: {
+            type: "Property",
+            value: user.rssi,
+        },
+        authenticationStatus: {
+            type: "Property",
+            value: user.verified ? "verified" : "unverified"
+        },
+        observedAt: {
+            type: "Property",
+            value: (new Date(user.timestamp)).toISOString()
+        }
+    }
+}
+
+async function convertToNGSIRoom(room: RedisRoomData): Promise<Room | null> {
+    const roomName = await prisma.room.findUnique({
+        where: { id: room.roomID },
+        select: { name: true }
+    })
+
+    if (!roomName?.name) return null;
+
+    return {
+        id: `urn:ngsi-ld:Room:${room.roomID}`,
+        type: "Room",
+        name: {
+            type: "Property",
+            value: roomName.name
+        },
+        occupancy: {
+            type: "Property",
+            value: room.occupancy
+        }
+    }
+}
+
+async function getNGSIUsers(): Promise<User[]> {
+    let users: User[] = [];
+
+    const result: RedisUserData[] = await getActiveUserData();
+
+    for (const r of result) {
+        const user = convertToNGSIUser(r);
+
+        users.push(user);
+    }
+
+    return users;
+}
+
+async function getNGSIRooms(): Promise<Room[]> {
+    let rooms: Room[] = [];
+
+    const result: RedisRoomData[] = await getRedisRoomData();
+
+    for (const r of result) {
+        const room = await convertToNGSIRoom(r);
+        if (room == null) continue;
+
+        rooms.push(room);
+    }
+
+    return rooms;
+}
+
+export async function getEntities(req: Request, res: Response, next: NextFunction) {
+    if (Object.keys(req.query).length > 0) return next();
+
+    let entities: Entity[] = [];
+
+    entities.push(...await getNGSIUsers());
+    entities.push(...await getNGSIRooms());
+
+    return res.status(200).send(entities);
+}
+
+export async function getEntitiesOfType(req: Request, res: Response) {
+    const { type } = req.query;
+
+    switch (type) {
+        case "user": return res.status(200).send(await getNGSIUsers());
+        case "room": return res.status(200).send(await getNGSIRooms());
+        default:
+            return res.sendStatus(400);
+    }
+}
+
+export async function getEntity(req: Request<Params>, res: Response) {
+    const { urn } = req.params;
+
+    if (!urn || !urn.startsWith("urn:ngsi-ld:")) return res.sendStatus(400);
+
+    const entity = urn.slice(12);
+
+    if (!entity) return res.sendStatus(400);
+
+    if (entity.toLowerCase().startsWith("room:")) {
+        const roomID = entity.slice(5);
+
+        if (!roomID) return res.sendStatus(400);
+
+        const data = await getRedisRoomData(roomID);
+
+        if (!data.length) return res.sendStatus(404);
+
+        return res.status(200).send(await convertToNGSIRoom(data[0]!));
+    } else if (entity.toLowerCase().startsWith("user:")) {
+        const userID = entity.slice(5);
+
+        if (!userID) return res.sendStatus(400);
+
+        const data = await getActiveUserData(userID);
+
+        if (!data.length) return res.sendStatus(404);
+
+        return res.status(200).send(convertToNGSIUser(data[0]!));
+    } else
+        return res.sendStatus(400);
+}
@@ -0,0 +1,106 @@
+import { prisma } from "../../lib/prisma.js";
+import { getRedis } from "../../redis/redis.js";
+
+export interface RedisUserData {
+    userID: string;
+    name: string;
+    rssi: number;
+    room: string;
+    verified: boolean;
+    timestamp: number;
+}
+
+export interface RedisRoomData {
+    roomID: string;
+    occupancy: number;
+}
+
+export async function getActiveUserData(userID?: string): Promise<RedisUserData[]> {
+    const redis = getRedis();
+
+    if (!userID) {
+        let cursor = "0";
+        let result: RedisUserData[] = [];
+
+        do {
+            const res = await redis.scan(cursor, {
+                MATCH: "user:*",
+                COUNT: 100,
+            });
+
+            cursor = res.cursor;
+
+            const values = await Promise.all(
+                res.keys.map((key) => redis.get(key))
+            );
+
+            result.push(...values
+                .filter((v): v is string => v !== null)
+                .map((v) => JSON.parse(v))
+            );
+
+        } while (cursor !== "0");
+
+        return result;
+    }
+
+    const _userID = await redis.get(`_user:${userID}`);
+
+    if (!_userID) return [];
+
+    const res = await redis.get(`user:${_userID}`);
+
+    if (!res) return [];
+
+    const resObj: RedisUserData = JSON.parse(res);
+
+    return [resObj];
+}
+
+export async function getRedisRoomData(roomID?: string): Promise<RedisRoomData[]> {
+    const redis = getRedis();
+
+    if (!roomID) {
+        let cursor = "0";
+        let result: RedisRoomData[] = [];
+
+        do {
+            const res = await redis.scan(cursor, {
+                MATCH: "room:*",
+                COUNT: 100,
+            });
+
+            cursor = res.cursor;
+
+            const values = await Promise.all(
+                res.keys.map(async (key) => ({
+                    roomID: key,
+                    occupancy: await redis.get(key),
+                }))
+            );
+
+            result.push(...values
+                .filter((v) => v.occupancy !== null)
+                .map((v) => ({
+                    roomID: v.roomID.slice(5),
+                    occupancy: Number(v.occupancy),
+                }))
+            );
+
+        } while (cursor !== "0");
+
+        return result;
+    }
+
+    const res = await redis.get(`room:${roomID}`);
+
+    if (!res) return [];
+
+    return [{ roomID: roomID, occupancy: Number(res) }];
+}
+
+export async function getRoomIDs(): Promise<{ id: string; }[]> {
+    return await prisma.room.findMany({
+        select: { id: true }
+    });
+}
@@ -1,9 +1,9 @@
 import { prisma } from "../../lib/prisma.js";

 export async function existsByUUID(uuid: string): Promise<boolean> {
-    const user = await prisma.user.findUnique({
+    const tag = await prisma.tag.findUnique({
        where: { id: uuid }
    });

-    return !!user;
+    return !!tag;
 }
@@ -0,0 +1,57 @@
+interface Config {
+    api: {
+        address: string;
+        port: number;
+    };
+    mqtt: {
+        host: string;
+        port: number;
+        username: string;
+        password: string;
+        topic: string;
+    };
+    redis: {
+        host: string;
+        port: number;
+    };
+    core: {
+        hysteresis: number;
+        candidateHysteresis: number;
+        debounceMS: number;
+        minSamples: number;
+        transitionTTL: number;
+        transitionCleanupInterval: number;
+        lossThreshold: number;
+        userTTL: number;
+    };
+}
+
+const config: Config = {
+    api: {
+        address: "0.0.0.0",
+        port: 80,
+    },
+    mqtt: {
+        host: "192.168.1.2",
+        port: 1883,
+        username: "user",
+        password: "pass",
+        topic: "scanners/+",
+    },
+    redis: {
+        host: "192.168.1.2",
+        port: 6379,
+    },
+    core: {
+        hysteresis: 6,
+        candidateHysteresis: 3,
+        debounceMS: 3000,
+        minSamples: 4,
+        transitionTTL: 5 * 60 * 1000,
+        transitionCleanupInterval: 60 * 1000,
+        lossThreshold: 5000,
+        userTTL: 3 * 60 * 1000
+    },
+}
+
+export default config;
@@ -0,0 +1,173 @@
+import { getRedis } from "../redis/redis.js";
+import { prisma } from "../lib/prisma.js";
+import { RoomTransition, transitions } from "./transition.js";
+import config from "../config/config.js";
+import { type RedisUserData } from "../api/livedata/livedata.repository.js";
+
+const adjectives = [
+    "Crazy",
+    "Silent",
+    "Dark",
+    "Fast",
+    "Lucky",
+    "Wild",
+    "Epic"
+];
+
+const nouns = [
+    "Tiger",
+    "Wolf",
+    "Falcon",
+    "Shadow",
+    "Ninja",
+    "Dragon",
+    "Phoenix"
+];
+
+const running = new Set<string>();
+const userRooms = new Map<string, string>();
+const userPseudo = new Map<string, string>();
+
+export async function updateRoomOccupancyListener(message: string, channel: string) {
+    console.log(`[Redis] Key ${message} expired.`);
+
+    const id = message.startsWith("user:") ? message.slice(5) : message;
+    const lastRoomID = userRooms.get(id);
+    const userPseudoID = userPseudo.get(id);
+
+    const redis = getRedis();
+
+    if (!lastRoomID) {
+        console.log("[!] Key not found in local mapι")
+    } else {
+        await redis.decr(`room:${lastRoomID}`);
+    }
+
+    await redis.del(`_user:${userPseudoID}`);
+
+    userRooms.delete(id);
+    userPseudo.delete(id);
+}
+
+function generateNickname() {
+    const adjective =
+        adjectives[Math.floor(Math.random() * adjectives.length)];
+
+    const noun =
+        nouns[Math.floor(Math.random() * nouns.length)];
+
+    const number = Math.floor(Math.random() * 1000);
+
+    return `${adjective}${noun}${number}`;
+}
+
+function newUser(): { pseudoID: string, psuedoName: string } {
+    return {
+        pseudoID: crypto.randomUUID(),
+        psuedoName: generateNickname()
+    };
+}
+
+export async function analyzeData(roomID: string, metrics: {
+    tagID: string,
+    rssi: number
+}) {
+    if (running.has(metrics.tagID)) {
+        console.log(`[!] Skipping TAG_ID: ${metrics.tagID} already in process.`);
+        return;
+    }
+
+    running.add(metrics.tagID);
+
+    try {
+        console.log(`\n=======================================================\n` +
+            `ROOM_ID: ${roomID}\nTAG_ID: ${metrics.tagID}\nRSSI: ${metrics.rssi}\n` +
+            `=======================================================\n`);
+
+        const userID = (
+            await prisma.tag.findUnique({
+                where: { id: metrics.tagID },
+                select: { userId: true },
+            })
+        )?.userId;
+
+        console.log(`[SQLite] Resolved USER_ID: ${userID}`);
+
+        if (!userID)
+            return;
+
+        const redis = getRedis();
+        const res = await redis.get(`user:${userID}`);
+
+        if (!res) {
+            const user = newUser();
+            console.log(`[Redis] Created USER: ${user.psuedoName} USER_ID: ${user.pseudoID}`);
+
+            // trigger camera
+
+            await redis.set(`user:${userID}`, JSON.stringify({
+                userID: user.pseudoID,
+                name: user.psuedoName,
+                rssi: metrics.rssi,
+                room: roomID,
+                verified: false,
+                timestamp: Date.now()
+            }), { PX: config.core.userTTL });
+
+            await redis.set(`_user:${user.pseudoID}`, userID);
+
+            await redis.incr(`room:${roomID}`);
+
+            userRooms.set(userID, roomID);
+            userPseudo.set(userID, user.pseudoID);
+
+            console.log("[Redis] Stored new user in redis.");
+
+            return;
+        }
+
+        let resObj: RedisUserData = JSON.parse(res);
+        console.log(`[Redis] User exists in redis in ROOM_ID: ${resObj["room"]}`);
+
+        if (roomID == resObj["room"]) {
+            console.log("[Redis] Same room, updating redis...");
+            resObj["rssi"] = metrics.rssi;
+            resObj["timestamp"] = Date.now()
+
+            await redis.set(`user:${userID}`, JSON.stringify(resObj), { PX: config.core.userTTL });
+
+            return;
+        }
+
+        let transition = transitions.get(userID);
+
+        // update room occupancy
+
+        if (!transition) {
+            console.log("[!] Starting new transition");
+            transition = new RoomTransition();
+            transitions.set(userID, transition);
+        }
+
+        if (transition.shouldTransitionTo(roomID, metrics.rssi, resObj["rssi"], resObj["timestamp"])) {
+            // trigger camera
+
+            console.log(`[!] Transition done ${resObj["room"]} -> ${roomID}`);
+
+            await redis.decr(`room:${resObj["room"]}`);
+            await redis.incr(`room:${roomID}`);
+
+            userRooms.set(userID, roomID);
+
+            resObj["rssi"] = metrics.rssi;
+            resObj["room"] = roomID;
+            resObj["timestamp"] = Date.now()
+
+
+            await redis.set(`user:${userID}`, JSON.stringify(resObj), { PX: config.core.userTTL });
+        } else
+            console.log("[!] Transition declined");
+    } finally {
+        running.delete(metrics.tagID);
+    }
+}
@@ -0,0 +1,27 @@
+import { getRoomIDs } from "../api/livedata/livedata.repository.js";
+import { initRedis, initSubRedis } from "../redis/redis.js";
+import * as mqtt from "./mqtt.js";
+import { cleanupWorker } from "./transition.js";
+
+export async function bootstrap() {
+    try {
+        const redis = await initRedis();
+
+        await redis.flushDb();
+        console.log(`[!] Flushed Redis.`);
+
+        const rooms = await getRoomIDs();
+        for (const { id } of rooms)
+            await redis.set(`room:${id}`, 0);
+
+        await initSubRedis();
+        await mqtt.start();
+
+        cleanupWorker();
+
+        console.log("[!] Core started.");
+    } catch (err: any) {
+        console.log("[!] Bootstrap failed:", err.message);
+        process.exit(1);
+    }
+}
@@ -0,0 +1,48 @@
+import mqtt, { MqttClient } from "mqtt";
+import config from "../config/config.js";
+import { analyzeData } from "./analyze.js";
+
+function initMqtt(): Promise<MqttClient> {
+    return new Promise((resolve, reject) => {
+        const client = mqtt.connect(
+            `mqtt://${config.mqtt.host}:${config.mqtt.port}`,
+            {
+                username: config.mqtt.username,
+                password: config.mqtt.password
+            }
+        );
+
+        client.once("connect", () => {
+            console.log("[MQTT] MQTT connected.");
+
+            client.subscribe(config.mqtt.topic, (err) => {
+                if (err) {
+                    reject(err);
+                } else {
+                    console.log("[MQTT] MQTT subscribed.");
+                    resolve(client);
+                }
+            });
+        });
+
+        client.once("error", (err) => {
+            reject(err);
+        });
+    });
+}
+
+export async function start() {
+    try {
+        const mqttClient = await initMqtt();
+
+        mqttClient.on("message", (topic, message) => {
+            analyzeData(topic.split("/").pop()!, JSON.parse(message.toString()));
+        });
+
+        mqttClient.on("error", (err) => {
+            console.log(err.message);
+        })
+    } catch (err: any) {
+        console.log("[MQTT] MQTT connection failed:", err.message);
+    }
+}
@@ -0,0 +1,94 @@
+import config from "../config/config.js";
+
+export const transitions = new Map<string, RoomTransition>();
+
+export function cleanupWorker() {
+    setInterval(() => {
+        const now = Date.now();
+
+        for (const [userID, transition] of transitions) {
+            const inactiveFor = now - transition.lastSeen;
+
+            if (inactiveFor > 5 * config.core.transitionTTL)
+                transitions.delete(userID);
+        }
+    }, config.core.transitionCleanupInterval);
+}
+
+type Candidate = {
+    roomID: string | null;
+    since: number | null;
+    samples: number;
+    rssi: number | null;
+};
+
+export class RoomTransition {
+    candidate: Candidate;
+    lastSeen: number;
+
+    constructor() {
+        this.lastSeen = Date.now();
+        this.candidate = { roomID: null, since: null, samples: 0, rssi: null };
+    }
+
+    shouldTransitionTo(roomID: string, candidateRSSI: number, currRSSI: number, lastCurrentSeen: number) {
+        const now = Date.now();
+        this.lastSeen = now;
+
+        const stronger = candidateRSSI > currRSSI + config.core.hysteresis;
+
+        const signalLost = now - lastCurrentSeen > config.core.lossThreshold;
+
+        console.log(`[TRANSITION] stronger = ${stronger}`);
+        console.log(`[TRANSITION] signalLost = ${signalLost}`);
+
+        if (!stronger && !signalLost) {
+            this.reset();
+            return false;
+        }
+
+        const noCandidate = this.candidate.roomID == null;
+        const betterCandidate = this.candidate.roomID != roomID &&
+            this.candidate.rssi !== null &&
+            candidateRSSI > this.candidate.rssi + config.core.candidateHysteresis;
+
+        console.log(`[TRANSITION] noCandidate = ${noCandidate}`);
+        console.log(`[TRANSITION] betterCandidate = ${betterCandidate}`);
+
+        if (noCandidate || betterCandidate) {
+            this.candidate.roomID = roomID;
+            this.candidate.since = now;
+            this.candidate.samples = 1;
+            this.candidate.rssi = candidateRSSI;
+
+            return false;
+        }
+
+        this.candidate.samples++;
+        this.candidate.rssi = candidateRSSI;
+
+        console.log(`[TRANSITION] samples = ${this.candidate.samples}`);
+        console.log(`[TRANSITION] candidateRSSI = ${this.candidate.rssi}`);
+
+        const enoughTime = now - (this.candidate.since ?? now) >= config.core.debounceMS;
+        const enoughConfirmations = this.candidate.samples >= config.core.minSamples;
+
+        console.log(`[TRANSITION] enoughTime = ${enoughTime}`);
+        console.log(`[TRANSITION] enoughConfirmations = ${enoughConfirmations}`);
+        console.log(`[TRANSITION] signalLost = ${signalLost}`);
+
+        if ((enoughTime && enoughConfirmations) || signalLost) {
+            this.reset();
+            return true;
+        }
+
+        return false;
+    }
+
+    reset() {
+        this.candidate.roomID = null;
+        this.candidate.since = null;
+        this.candidate.samples = 0;
+        this.candidate.rssi = null;
+    }
+}
@@ -1,12 +1,19 @@
 import express from "express";
 import lookupRoutes from "./api/lookup/lookup.routes.js";
+import livedataRoutes from "./api/livedata/livadata.routes.js"
+import config from "./config/config.js";
+import { bootstrap } from "./core/bootstrap.js";

-const app = express();
-const PORT = 80;
-const ADDRESS = "0.0.0.0";
+(async () => {
+    const app = express();

-app.use("/", lookupRoutes);
+    app.use("/lookup", lookupRoutes);
+    app.use("/livedata", livedataRoutes);

-app.listen(PORT, ADDRESS, () => {
-    console.log(`Server listening on ${ADDRESS}:${PORT}`);
-});
+    app.listen(config.api.port, config.api.address, () => {
+        console.log(`Server listening on ${config.api.address}:${config.api.port}`);
+    });
+
+    bootstrap();
+
+})()
@@ -0,0 +1,48 @@
+import { createClient, type RedisClientType } from "redis";
+import config from "../config/config.js";
+import { updateRoomOccupancyListener } from "../core/analyze.js";
+
+let redisClient: RedisClientType;
+let subRedisClient: RedisClientType;
+
+export async function initSubRedis(): Promise<void> {
+    subRedisClient = createClient({
+        url: `redis://${config.redis.host}:${config.redis.port}`
+    });
+
+    subRedisClient.on("error", (err) => {
+        console.log("[Redis] SubRedis error:", err.message);
+    });
+
+    await subRedisClient.connect();
+
+    console.log("[Redis] SubRedis connected.");
+
+    subRedisClient.pSubscribe("__keyevent@0__:expired", updateRoomOccupancyListener);
+
+    console.log("[Redis] SubRedis listener set.");
+}
+
+export async function initRedis(): Promise<RedisClientType> {
+    redisClient = createClient({
+        url: `redis://${config.redis.host}:${config.redis.port}`
+    });
+
+    redisClient.on("error", (err) => {
+        console.log("[Redis] Redis error:", err.message);
+    });
+
+    await redisClient.connect();
+
+    console.log("[Redis] Redis connected.");
+
+    return redisClient;
+}
+
+export function getRedis(): RedisClientType {
+    if (!redisClient) {
+        throw new Error("[Redis] Redis not initialized");
+    }
+
+    return redisClient;
+}
@@ -18,6 +18,7 @@ board_build.partitions = default.csv
 build_flags = 
  -DARDUINO_USB_CDC_ON_BOOT=1
  -DBOARD_HAS_PSRAM
+  -DCORE_DEBUG_LEVEL=0

 lib_deps =
    h2zero/NimBLE-Arduino
@@ -5,9 +5,14 @@
 #include "freertos/queue.h"
 #include <HTTPClient.h>
 #include <PubSubClient.h>
+#include <Preferences.h>
+#include "esp_system.h"

+Preferences prefs;
+Config config;
 CB cb;
-char MQTT_PUB_TOPIC[sizeof(MQTT_TOPIC) + sizeof(DEV_NAME) - 1];
+String MQTT_PUB_TOPIC;
+String serial_buffer = "";
 std::unordered_map<std::string, Tag> tags;
 std::unordered_map<std::string, UUIDCacheEntry> uuid_cache;
 SemaphoreHandle_t uuid_mtx;
@@ -27,7 +32,7 @@ void cleanupCache()
  {
    uint32_t age = now - it->second.last_check;

-    if (age > UUID_CACHE_CLEAN_TIMEOUT)
+    if (age > config.interval.uuid_cache_clean_timeout)
    {
      Serial.printf("Erasing %s from cache after being inactive for %dms.\n",
                    it->first.c_str(),
@@ -47,7 +52,7 @@ void cleanupTags()

  for (auto it = tags.begin(); it != tags.end();)
  {
-    if ((now - it->second.getLastSeen()) >= TAG_TIMEOUT)
+    if ((now - it->second.getLastSeen()) >= config.interval.tag_timeout)
    {
      Serial.printf("Erasing %s from memory after being inactive for %dms.\n",
                    it->first.c_str(),
@@ -69,7 +74,7 @@ void httpTask(void *)
    {
      HTTPClient http;

-      String url = UUID_CHECK_ENDPOINT + String(ev.uuid);
+      String url = config.api.url + config.api.uuid_check_endpoint + String("/") + String(ev.uuid);

      http.setTimeout(3000);
      http.setReuse(false);
@@ -82,6 +87,19 @@ void httpTask(void *)

      int code = http.GET();

+      if (code < 0)
+      {
+        xSemaphoreTake(uuid_mtx, portMAX_DELAY);
+        uuid_cache[ev.uuid] = {
+            UUIDState::RETRY,
+            millis()};
+
+        xSemaphoreGive(uuid_mtx);
+
+        http.end();
+        continue;
+      }
+
      bool valid = (code == 200);

      http.end();
@@ -110,8 +128,8 @@ void mqttTask(void *)
  {
    while (!mqtt.connected())
    {
-      Serial.printf("MQTT Disconnected. Connecting to %s:%d\n", MQTT_HOST, MQTT_PORT);
-      if (mqtt.connect(DEV_NAME, MQTT_USER, MQTT_PASS))
+      // Serial.printf("MQTT Disconnected. Connecting to %s:%d\n", config.mqtt.host.c_str(), config.mqtt.port);
+      if (mqtt.connect(config.dev_name.c_str(), config.mqtt.username.c_str(), config.mqtt.password.c_str()))
        Serial.println("MQTT connected.");
      vTaskDelay(pdMS_TO_TICKS(1000));
    }
@@ -121,11 +139,11 @@ void mqttTask(void *)
      char payload[128];

      snprintf(payload, sizeof(payload),
-               "{\"uuid\":\"%s\",\"rssi\":%.2f}",
+               "{\"tagID\":\"%s\",\"rssi\":%.2f}",
               ev.uuid,
               ev.ema);

-      bool ok = mqtt.publish(MQTT_PUB_TOPIC, payload);
+      bool ok = mqtt.publish(MQTT_PUB_TOPIC.c_str(), payload);

      if (!ok)
        Serial.println("Failed to publish on MQTT.");
@@ -143,7 +161,7 @@ void processEvent(const BleEvent &event)

  uint32_t now = millis();

-  if (it == uuid_cache.end())
+  if (it == uuid_cache.end() || (it->second.state == UUIDState::RETRY))
  {
    uuid_cache[event.uuid] = {UUIDState::PENDING, now};

@@ -158,7 +176,7 @@ void processEvent(const BleEvent &event)
  }

  if (it->second.state == UUIDState::INVALID &&
-      now - it->second.last_check > UUID_CACHE_RETRY_TIMEOUT)
+      now - it->second.last_check > config.interval.uuid_cache_retry_timeout)
  {
    it->second.state = UUIDState::PENDING;
    it->second.last_check = now;
@@ -202,9 +220,9 @@ void CB::onResult(const NimBLEAdvertisedDevice *d)
    return;

  NimBLEUUID uuid = d->getServiceUUID(0);
-  const std::string &name = d->getName();
+  const String name(d->getName().c_str());

-  if ((uuid.bitSize() != 128) || (name != TAG_NAME))
+  if ((uuid.bitSize() != 128) || (name != config.tag_name))
    return;

  BleEvent event;
@@ -215,23 +233,179 @@ void CB::onResult(const NimBLEAdvertisedDevice *d)
  xQueueSend(ble_queue, &event, pdMS_TO_TICKS(5));
 }

+void saveConfig()
+{
+  prefs.begin("config", false);
+
+  prefs.putUInt(CLEANUP_INTERVAL_CONFIG_KEY, config.interval.cleanup);
+  prefs.putUInt(TAG_TIMEOUT_CONFIG_KEY, config.interval.tag_timeout);
+  prefs.putUInt(UUID_CACHE_RETRY_TIMEOUT_CONFIG_KEY, config.interval.uuid_cache_retry_timeout);
+  prefs.putUInt(UUID_CACHE_CLEAN_TIMEOUT_CONFIG_KEY, config.interval.uuid_cache_clean_timeout);
+
+  prefs.putString(API_URL_CONFIG_KEY, config.api.url);
+  prefs.putString(UUID_CHECK_ENDPOINT_CONFIG_KEY, config.api.uuid_check_endpoint);
+
+  prefs.putString(MQTT_HOST_CONFIG_KEY, config.mqtt.host);
+  prefs.putUShort(MQTT_PORT_CONFIG_KEY, config.mqtt.port);
+  prefs.putString(MQTT_USER_CONFIG_KEY, config.mqtt.username);
+  prefs.putString(MQTT_PASS_CONFIG_KEY, config.mqtt.password);
+  prefs.putString(MQTT_TOPIC_CONFIG_KEY, config.mqtt.topic);
+
+  prefs.putString(WIFI_SSID_CONFIG_KEY, config.wifi.ssid);
+  prefs.putString(WIFI_PASS_CONFIG_KEY, config.wifi.password);
+
+  prefs.putString(DEV_NAME_CONFIG_KEY, config.dev_name);
+  prefs.putString(TAG_NAME_CONFIG_KEY, config.tag_name);
+
+  prefs.end();
+}
+
+void loadConfig()
+{
+  prefs.begin("config", true);
+
+  config.interval.cleanup = prefs.getUInt(CLEANUP_INTERVAL_CONFIG_KEY, CLEANUP_INTERVAL);
+  config.interval.tag_timeout = prefs.getUInt(TAG_TIMEOUT_CONFIG_KEY, TAG_TIMEOUT);
+  config.interval.uuid_cache_retry_timeout = prefs.getUInt(UUID_CACHE_RETRY_TIMEOUT_CONFIG_KEY, UUID_CACHE_RETRY_TIMEOUT);
+  config.interval.uuid_cache_clean_timeout = prefs.getUInt(UUID_CACHE_CLEAN_TIMEOUT_CONFIG_KEY, UUID_CACHE_CLEAN_TIMEOUT);
+
+  config.api.url = prefs.getString(API_URL_CONFIG_KEY, API_URL);
+  config.api.uuid_check_endpoint = prefs.getString(UUID_CHECK_ENDPOINT_CONFIG_KEY, UUID_CHECK_ENDPOINT);
+
+  config.mqtt.host = prefs.getString(MQTT_HOST_CONFIG_KEY, MQTT_HOST);
+  config.mqtt.port = prefs.getUShort(MQTT_PORT_CONFIG_KEY, MQTT_PORT);
+  config.mqtt.username = prefs.getString(MQTT_USER_CONFIG_KEY, MQTT_USER);
+  config.mqtt.password = prefs.getString(MQTT_PASS_CONFIG_KEY, MQTT_PASS);
+  config.mqtt.topic = prefs.getString(MQTT_TOPIC_CONFIG_KEY, MQTT_TOPIC);
+
+  config.wifi.ssid = prefs.getString(WIFI_SSID_CONFIG_KEY, WIFI_SSID);
+  config.wifi.password = prefs.getString(WIFI_PASS_CONFIG_KEY, WIFI_PASS);
+
+  config.dev_name = prefs.getString(DEV_NAME_CONFIG_KEY, DEV_NAME);
+  config.tag_name = prefs.getString(TAG_NAME_CONFIG_KEY, TAG_NAME);
+
+  prefs.end();
+}
+
+void handleCommand(String line)
+{
+  if (line.startsWith("set "))
+  {
+    int p1 = line.indexOf(' ', 4);
+    String key = line.substring(4, p1);
+    String value = line.substring(p1 + 1);
+
+    if (key.length() == 0 || value.length() == 0)
+      return;
+
+    if (key == CLEANUP_INTERVAL_CONFIG_KEY)
+      config.interval.cleanup = (uint32_t)value.toInt();
+    else if (key == TAG_TIMEOUT_CONFIG_KEY)
+      config.interval.tag_timeout = (uint32_t)value.toInt();
+    else if (key == UUID_CACHE_RETRY_TIMEOUT_CONFIG_KEY)
+      config.interval.uuid_cache_retry_timeout = (uint32_t)value.toInt();
+    else if (key == UUID_CACHE_CLEAN_TIMEOUT_CONFIG_KEY)
+      config.interval.uuid_cache_clean_timeout = (uint32_t)value.toInt();
+    else if (key == API_URL_CONFIG_KEY)
+      config.api.url = value;
+    else if (key == UUID_CHECK_ENDPOINT_CONFIG_KEY)
+      config.api.uuid_check_endpoint = value;
+    else if (key == MQTT_HOST_CONFIG_KEY)
+      config.mqtt.host = value;
+    else if (key == MQTT_PORT_CONFIG_KEY)
+      config.mqtt.port = value.toInt();
+    else if (key == MQTT_USER_CONFIG_KEY)
+      config.mqtt.username = value;
+    else if (key == MQTT_PASS_CONFIG_KEY)
+      config.mqtt.password = value;
+    else if (key == MQTT_TOPIC_CONFIG_KEY)
+      config.mqtt.topic = value;
+    else if (key == WIFI_SSID_CONFIG_KEY)
+      config.wifi.ssid = value;
+    else if (key == WIFI_PASS_CONFIG_KEY)
+      config.wifi.password = value;
+    else if (key == DEV_NAME_CONFIG_KEY)
+      config.dev_name = value;
+    else if (key == TAG_NAME_CONFIG_KEY)
+      config.tag_name = value;
+  }
+  else if (line == "save")
+    saveConfig();
+  else if (line.startsWith("show "))
+  {
+    String key = line.substring(5);
+
+    if (key.length() == 0)
+      return;
+
+    if (key == CLEANUP_INTERVAL_CONFIG_KEY)
+      Serial.println(config.interval.cleanup);
+    else if (key == TAG_TIMEOUT_CONFIG_KEY)
+      Serial.println(config.interval.tag_timeout);
+    else if (key == UUID_CACHE_RETRY_TIMEOUT_CONFIG_KEY)
+      Serial.println(config.interval.uuid_cache_retry_timeout);
+    else if (key == UUID_CACHE_CLEAN_TIMEOUT_CONFIG_KEY)
+      Serial.println(config.interval.uuid_cache_clean_timeout);
+    else if (key == API_URL_CONFIG_KEY)
+      Serial.println(config.api.url);
+    else if (key == UUID_CHECK_ENDPOINT_CONFIG_KEY)
+      Serial.println(config.api.uuid_check_endpoint);
+    else if (key == MQTT_HOST_CONFIG_KEY)
+      Serial.println(config.mqtt.host);
+    else if (key == MQTT_PORT_CONFIG_KEY)
+      Serial.println(config.mqtt.port);
+    else if (key == MQTT_USER_CONFIG_KEY)
+      Serial.println(config.mqtt.username);
+    else if (key == MQTT_PASS_CONFIG_KEY)
+      Serial.println(config.mqtt.password);
+    else if (key == MQTT_TOPIC_CONFIG_KEY)
+      Serial.println(config.mqtt.topic);
+    else if (key == WIFI_SSID_CONFIG_KEY)
+      Serial.println(config.wifi.ssid);
+    else if (key == WIFI_PASS_CONFIG_KEY)
+      Serial.println(config.wifi.password);
+    else if (key == DEV_NAME_CONFIG_KEY)
+      Serial.println(config.dev_name);
+    else if (key == TAG_NAME_CONFIG_KEY)
+      Serial.println(config.tag_name);
+  }
+  else if (line == "reset")
+  {
+    prefs.begin("config", false);
+    prefs.clear();
+    prefs.end();
+
+    esp_restart();
+  }
+  else if (line == "reboot")
+  {
+    Serial.println("Rebooting...");
+    Serial.flush();
+    esp_restart();
+  }
+  else if (line == "help")
+  {
+    Serial.println("Commands:");
+    Serial.println("  set <key> <value>   - Set a configuration value");
+    Serial.println("  show <key>          - Show a configuration value");
+    Serial.println("  save                - Save configuration to non-volatile storage");
+    Serial.println("  reset               - Reset configuration to defaults");
+    Serial.println("  reboot              - Reboot the device");
+    Serial.println("  help                - Show this help message");
+  }
+}
+
 void setup()
 {
  Serial.begin(115200);

-  WiFi.begin(WIFI_SSID, WIFI_PASS);
+  loadConfig();

-  while (WiFi.status() != WL_CONNECTED)
-  {
-    delay(500);
-    Serial.print(".");
-  }
+  WiFi.begin(config.wifi.ssid.c_str(), config.wifi.password.c_str());

-  Serial.println("\nWiFi connected");
+  MQTT_PUB_TOPIC = config.mqtt.topic + config.dev_name;

-  snprintf(MQTT_PUB_TOPIC, sizeof(MQTT_PUB_TOPIC), "%s%s", MQTT_TOPIC, DEV_NAME);
-
-  mqtt.setServer(MQTT_HOST, MQTT_PORT);
+  mqtt.setServer(config.mqtt.host.c_str(), config.mqtt.port);
  mqtt.setKeepAlive(60);
  mqtt.setSocketTimeout(5);

@@ -244,7 +418,7 @@ void setup()
  xTaskCreatePinnedToCore(mqttTask, "mqtt", 4096, NULL, 1, NULL, 1);
  xTaskCreatePinnedToCore(httpTask, "http", 4096, NULL, 1, NULL, 1);

-  NimBLEDevice::init(DEV_NAME);
+  NimBLEDevice::init(config.dev_name.c_str());

  NimBLEScan *scan = NimBLEDevice::getScan();

@@ -264,10 +438,45 @@ void loop()

  static uint32_t last_cleanup = 0;

-  if (millis() - last_cleanup >= CLEANUP_INTERVAL)
+  if (millis() - last_cleanup >= config.interval.cleanup)
  {
    cleanupTags();
    cleanupCache();
    last_cleanup = millis();
  }
+
+  while (Serial.available())
+  {
+    char c = Serial.read();
+
+    if (c == '\r')
+      continue;
+
+    if (c == '\n')
+    {
+      Serial.print(c);
+      serial_buffer.trim();
+
+      if (serial_buffer.length() > 0)
+        handleCommand(serial_buffer);
+
+      serial_buffer = "";
+
+      Serial.printf("%s> ", config.dev_name.c_str());
+    }
+    else if (c == '\b')
+    {
+      if (serial_buffer.length() > 0)
+      {
+        serial_buffer.remove(serial_buffer.length() - 1);
+
+        Serial.print("\b \b");
+      }
+    }
+    else
+    {
+      Serial.print(c);
+      serial_buffer += c;
+    }
+  }
 }
@@ -5,12 +5,29 @@
 #include <NimBLEDevice.h>
 #include <string>

-#define CLEANUP_INTERVAL 5 * 1000 // ms
-#define TAG_TIMEOUT 60 * 1000 // ms
-#define UUID_CACHE_RETRY_TIMEOUT 5 * 60 * 1000 // ms
+#define CLEANUP_INTERVAL_CONFIG_KEY "int.cln"
+#define TAG_TIMEOUT_CONFIG_KEY "int.tagto"
+#define UUID_CACHE_RETRY_TIMEOUT_CONFIG_KEY "int.urtry"
+#define UUID_CACHE_CLEAN_TIMEOUT_CONFIG_KEY "int.ucclean"
+#define API_URL_CONFIG_KEY "api.url"
+#define UUID_CHECK_ENDPOINT_CONFIG_KEY "api.uuidchk"
+#define MQTT_HOST_CONFIG_KEY "mq.host"
+#define MQTT_PORT_CONFIG_KEY "mq.port"
+#define MQTT_USER_CONFIG_KEY "mq.user"
+#define MQTT_PASS_CONFIG_KEY "mq.pass"
+#define MQTT_TOPIC_CONFIG_KEY "mq.topic"
+#define WIFI_SSID_CONFIG_KEY "wf.ssid"
+#define WIFI_PASS_CONFIG_KEY "wf.pass"
+#define DEV_NAME_CONFIG_KEY "dev.name"
+#define TAG_NAME_CONFIG_KEY "tag.name"
+
+#define CLEANUP_INTERVAL 5 * 1000               // ms
+#define TAG_TIMEOUT 60 * 1000                   // ms
+#define UUID_CACHE_RETRY_TIMEOUT 5 * 60 * 1000  // ms
 #define UUID_CACHE_CLEAN_TIMEOUT 60 * 60 * 1000 // ms
+#define API_URL "http://192.168.1.2"
+#define UUID_CHECK_ENDPOINT "/check"
 #define TAG_NAME "X6TAG"
-#define UUID_CHECK_ENDPOINT "http://192.168.1.2/check/"
 #define MQTT_HOST "192.168.1.2"
 #define MQTT_PORT 1883
 #define MQTT_USER "user"
@@ -18,7 +35,42 @@
 #define MQTT_TOPIC "scanners/"
 #define WIFI_SSID "COSMOTE-489882"
 #define WIFI_PASS "x32hbh54673ngccdsfa9"
-#define DEV_NAME "Scanner_Room_A"
+#define DEV_NAME "572b29cb-6a93-480e-adf0-c5c44e9a58df"
+
+struct Config
+{
+    struct Interval
+    {
+        uint32_t cleanup;
+        uint32_t tag_timeout;
+        uint32_t uuid_cache_retry_timeout;
+        uint32_t uuid_cache_clean_timeout;
+    } interval;
+
+    struct API
+    {
+        String url;
+        String uuid_check_endpoint;
+    } api;
+
+    struct MQTT
+    {
+        String host;
+        uint16_t port;
+        String username;
+        String password;
+        String topic;
+    } mqtt;
+
+    struct WiFi
+    {
+        String ssid;
+        String password;
+    } wifi;
+
+    String dev_name;
+    String tag_name;
+};

 struct BleEvent
 {
@@ -40,6 +92,7 @@ struct HttpEvent
 enum class UUIDState
 {
    PENDING,
+    RETRY,
    VALID,
    INVALID
 };
@@ -1,21 +1,13 @@
 #include <stdio.h>
 #include <string.h>
 #include "nvs_flash.h"
-
 #include "nimble/nimble_port.h"
 #include "nimble/nimble_port_freertos.h"
-
-#include "host/ble_hs.h"
 #include "services/gap/ble_svc_gap.h"
+#include "driver/usb_serial_jtag.h"
+#include "main.h"

-static const char *TAG = "BLE";
-
-static const ble_uuid128_t service_uuid =
-    BLE_UUID128_INIT(
-        0xF0, 0xDE, 0xBC, 0x9A,
-        0x78, 0x56, 0x34, 0x12,
-        0xF0, 0xDE, 0xBC, 0x9A,
-        0x78, 0x56, 0x34, 0x12);
+static config_t config;

 static void start_adv(void)
 {
@@ -24,19 +16,18 @@ static void start_adv(void)

    fields.flags = BLE_HS_ADV_F_DISC_GEN | BLE_HS_ADV_F_BREDR_UNSUP;

-    fields.uuids128 = (ble_uuid128_t *)&service_uuid;
+    fields.name = (uint8_t *)config.name;
+    fields.name_len = strlen(config.name);
+    fields.name_is_complete = 1;
+
+    fields.uuids128 = (ble_uuid128_t *)&config.uuid;
    fields.num_uuids128 = 1;
    fields.uuids128_is_complete = 1;

-    uint8_t mfg_data[5] = {0x34, 0x34, 0x34, 0x34, 0x34};
-
-    fields.mfg_data = mfg_data;
-    fields.mfg_data_len = sizeof(mfg_data);
-
    int rc = ble_gap_adv_set_fields(&fields);
    if (rc != 0)
    {
-        ESP_LOGE(TAG, "adv set fields failed: %d", rc);
+        ESP_LOGE(config.name, "adv set fields failed: %d", rc);
        return;
    }

@@ -58,17 +49,17 @@ static void start_adv(void)

    if (rc != 0)
    {
-        ESP_LOGE(TAG, "adv start failed: %d", rc);
+        ESP_LOGE(config.name, "adv start failed: %d", rc);
    }
    else
    {
-        ESP_LOGI(TAG, "advertising started");
+        ESP_LOGI(config.name, "advertising started");
    }
 }

 static void on_sync(void)
 {
-    ESP_LOGI(TAG, "BLE synced");
+    ESP_LOGI(config.name, "BLE synced");

    start_adv();
 }
@@ -78,15 +69,251 @@ static void host_task(void *param)
    nimble_port_run();
 }

+static bool uuid_from_string(const char *str, ble_uuid128_t *uuid)
+{
+    unsigned int b[16];
+
+    int rc = sscanf(str,
+                    "%02x%02x%02x%02x-"
+                    "%02x%02x-"
+                    "%02x%02x-"
+                    "%02x%02x-"
+                    "%02x%02x%02x%02x%02x%02x",
+
+                    &b[15], &b[14], &b[13], &b[12],
+                    &b[11], &b[10],
+                    &b[9], &b[8],
+                    &b[7], &b[6],
+                    &b[5], &b[4], &b[3],
+                    &b[2], &b[1], &b[0]);
+
+    if (rc != 16)
+        return false;
+
+    uuid->u.type = BLE_UUID_TYPE_128;
+
+    for (int i = 0; i < 16; i++)
+        uuid->value[i] = (uint8_t)b[i];
+
+    return true;
+}
+
+static esp_err_t reset_config()
+{
+    nvs_handle_t nvs;
+
+    esp_err_t err = nvs_open("config", NVS_READWRITE, &nvs);
+
+    if (err != ESP_OK)
+        return err;
+
+    err = nvs_erase_all(nvs);
+
+    if (err != ESP_OK)
+        goto exit;
+
+    err = nvs_commit(nvs);
+
+exit:
+    nvs_close(nvs);
+
+    return err;
+}
+
+static esp_err_t save_config()
+{
+    nvs_handle_t nvs;
+
+    esp_err_t err = nvs_open("config", NVS_READWRITE, &nvs);
+
+    if (err != ESP_OK)
+        return err;
+
+    err = nvs_set_str(nvs, "uuid", config.uuid_str);
+
+    if (err != ESP_OK)
+        goto exit;
+
+    err = nvs_set_str(nvs, "name", config.name);
+
+    if (err != ESP_OK)
+        goto exit;
+
+    err = nvs_set_u32(nvs, "adv_int", config.adv_interval);
+
+    if (err != ESP_OK)
+        goto exit;
+
+    err = nvs_commit(nvs);
+
+exit:
+    nvs_close(nvs);
+
+    return err;
+}
+
+static esp_err_t load_config()
+{
+    nvs_handle_t nvs;
+
+    esp_err_t err = nvs_open("config", NVS_READONLY, &nvs);
+
+    strcpy(config.uuid_str, DEFAULT_UUID);
+    strcpy(config.name, DEFAULT_NAME);
+    config.adv_interval = DEFAULT_ADV_INTERVAL;
+
+    uuid_from_string(config.uuid_str, &config.uuid);
+
+    if (err != ESP_OK)
+        return err;
+
+    size_t len;
+
+    len = sizeof(config.uuid_str);
+
+    nvs_get_str(nvs, "uuid", config.uuid_str, &len);
+
+    len = sizeof(config.name);
+
+    nvs_get_str(nvs, "name", config.name, &len);
+
+    nvs_get_u32(nvs, "adv_int", &config.adv_interval);
+
+    nvs_close(nvs);
+
+    uuid_from_string(config.uuid_str, &config.uuid);
+
+    return ESP_OK;
+}
+
+void serial_task(void *arg)
+{
+    char line[128];
+    char buf[64];
+    int pos = 0;
+
+    while (1)
+    {
+        uint8_t ch;
+
+        int len = usb_serial_jtag_read_bytes(&ch, 1, portMAX_DELAY);
+
+        if (len > 0)
+        {
+            if (ch == '\n' || ch == '\r')
+            {
+                usb_serial_jtag_write_bytes("\n", 1, 20 / portTICK_PERIOD_MS);
+                line[pos] = '\0';
+
+                if (pos > 0)
+                {
+                    if (strncmp(line, "set uuid ", 9) == 0)
+                    {
+                        if (uuid_from_string(line + 9, &config.uuid))
+                            strcpy(config.uuid_str, line + 9);
+                    }
+                    else if (strncmp(line, "set name ", 9) == 0)
+                    {
+                        strncpy(config.name, line + 9, sizeof(config.name) - 1);
+                        config.name[sizeof(config.name) - 1] = '\0';
+                    }
+                    else if (strncmp(line, "set adv_interval ", 17) == 0)
+                    {
+                        uint32_t interval = atoi(line + 17);
+                        if (interval > 0)
+                            config.adv_interval = interval;
+                    }
+                    else if (strcmp(line, "show uuid") == 0)
+                    {
+                        usb_serial_jtag_write_bytes(config.uuid_str, strlen(config.uuid_str), 20 / portTICK_PERIOD_MS);
+                        usb_serial_jtag_write_bytes("\n", 1, 20 / portTICK_PERIOD_MS);
+                    }
+                    else if (strcmp(line, "show name") == 0)
+                    {
+                        usb_serial_jtag_write_bytes(config.name, strlen(config.name), 20 / portTICK_PERIOD_MS);
+                        usb_serial_jtag_write_bytes("\n", 1, 20 / portTICK_PERIOD_MS);
+                    }
+                    else if (strcmp(line, "show adv_interval") == 0)
+                    {
+                        int len = snprintf(buf, sizeof(buf), "%lu\n", (unsigned long)config.adv_interval);
+                        usb_serial_jtag_write_bytes(buf, len, 20 / portTICK_PERIOD_MS);
+                    }
+                    else if (strcmp(line, "save") == 0)
+                        save_config();
+                    else if (strcmp(line, "reset") == 0)
+                    {
+                        reset_config();
+                        esp_restart();
+                    }
+                    else if (strcmp(line, "reboot") == 0)
+                    {
+                        usb_serial_jtag_write_bytes("Rebooting...\n", 13, 20 / portTICK_PERIOD_MS);
+                        esp_restart();
+                    }
+                    else if (strcmp(line, "help") == 0)
+                    {
+                        usb_serial_jtag_write_bytes("Commands:\n"
+                                                    "  set uuid <uuid>\n"
+                                                    "  set name <name>\n"
+                                                    "  set adv_interval <ms>\n"
+                                                    "  show uuid\n"
+                                                    "  show name\n"
+                                                    "  show adv_interval\n"
+                                                    "  save\n"
+                                                    "  reset\n"
+                                                    "  reboot\n"
+                                                    "  help\n",
+                                                    145, 20 / portTICK_PERIOD_MS);
+                    }
+                }
+
+                pos = 0;
+                int len = snprintf(buf, sizeof(buf), "%s> ", config.name);
+                usb_serial_jtag_write_bytes(buf, len, 20 / portTICK_PERIOD_MS);
+            }
+            else if (ch == 0x08)
+            {
+                if (pos > 0)
+                {
+                    pos--;
+                    usb_serial_jtag_write_bytes("\b \b", 3, 20 / portTICK_PERIOD_MS);
+                }
+            }
+            else
+            {
+                if (pos < sizeof(line) - 1)
+                {
+                    line[pos++] = ch;
+                    usb_serial_jtag_write_bytes((char *)&ch, 1, 20 / portTICK_PERIOD_MS);
+                }
+            }
+        }
+    }
+}
+
 void app_main(void)
 {
    ESP_ERROR_CHECK(nvs_flash_init());
+
+    usb_serial_jtag_driver_config_t cfg = USB_SERIAL_JTAG_DRIVER_CONFIG_DEFAULT();
+    usb_serial_jtag_driver_install(&cfg);
+
+    load_config();
+
    nimble_port_init();

    ble_svc_gap_init();
-    ble_svc_gap_device_name_set("XIAO_C6");
+    ble_svc_gap_device_name_set("X6TAG");

    ble_hs_cfg.sync_cb = on_sync;

+    xTaskCreate(
+        serial_task,
+        "serial_task",
+        4096,
+        NULL,
+        5,
+        NULL);
+
    nimble_port_freertos_init(host_task);
 }
@@ -0,0 +1,18 @@
+#ifndef MAIN_H
+#define MAIN_H
+
+#include "host/ble_hs.h"
+
+#define DEFAULT_UUID "12345678-9abc-def0-1234-56789abcdef0"
+#define DEFAULT_NAME "X6TAG"
+#define DEFAULT_ADV_INTERVAL 0x80
+
+typedef struct
+{
+    ble_uuid128_t uuid;
+    char uuid_str[37];
+    char name[32];
+    uint32_t adv_interval;
+} config_t;
+
+#endif
Author	SHA1	Message	Date
Kostas Drakontidis	92b3c72e3e	nodered flow upload	2026-05-25 06:01:47 +03:00
Kostas DrakontidisandGitHub	41cf0ad7ca	Merge pull request #15 from dkwstas/public_api Public api	2026-05-25 05:58:36 +03:00
Kostas Drakontidis	80ff81b1e0	room occupancy impl & race cond fix & local user roomID and psuedoID storage for cleanup and indexing	2026-05-25 05:57:35 +03:00
Kostas Drakontidis	46016d966d	ngsi-ld public api code	2026-05-25 05:55:43 +03:00
Kostas Drakontidis	c2b947a197	flush redis on startup and init subredis	2026-05-25 05:55:04 +03:00
Kostas Drakontidis	66ab3fa6ca	added debug prefix	2026-05-25 05:54:37 +03:00
Kostas Drakontidis	c8da529ce3	whitespace	2026-05-25 05:54:25 +03:00
Kostas Drakontidis	93c65a948b	added routes	2026-05-25 05:54:17 +03:00
Kostas Drakontidis	124ef542b0	moved redis & added subredis for expire notifications	2026-05-25 05:53:53 +03:00
Kostas DrakontidisandGitHub	31f8dc2f98	Update progress.md with Week 4 details	2026-05-24 00:25:38 +03:00
Kostas DrakontidisandGitHub	77f53435fe	Merge pull request #14 from dkwstas/core_dev Core dev	2026-05-24 00:21:14 +03:00
Kostas Drakontidis	565900c9d4	init fully working core code	2026-05-24 00:19:09 +03:00
Kostas Drakontidis	a3d28e8cd5	prisma migrations	2026-05-24 00:18:31 +03:00
Kostas Drakontidis	9d024de5a6	get data from tag table instead of user	2026-05-24 00:04:43 +03:00
Kostas Drakontidis	18932a3f4d	add room entity	2026-05-24 00:03:59 +03:00
Kostas Drakontidis	e4868f6fdc	install mqtt & redis packages	2026-05-24 00:03:51 +03:00
Kostas Drakontidis	d4cf7f5b48	mqtt topic and msg small change	2026-05-23 23:43:28 +03:00
Kostas Drakontidis	c8f07e22d9	Add reset command scanner	2026-05-22 13:03:47 +03:00
Kostas DrakontidisandGitHub	22f4d777a4	Merge pull request #13 from dkwstas/persistent_config Closes #11	2026-05-20 17:46:57 +03:00
admin	3977e8d17b	Tag config management code	2026-05-20 17:44:46 +03:00
Kostas DrakontidisandGitHub	a50c48a92d	Merge pull request #12 from dkwstas/main Change tag name & remove mfg data	2026-05-19 23:29:19 +03:00
admin	96233d2ae5	Scanner config management code	2026-05-19 23:02:09 +03:00
Kostas Drakontidis	86cc46ea9b	Change tag name & remove mfg data	2026-05-15 17:32:45 +03:00
Kostas DrakontidisandGitHub	d5738d460c	Add equipment functionality testing to completed section	2026-05-15 14:34:07 +03:00
Kostas DrakontidisandGitHub	80f7c89852	Update weekly progress log with new entries	2026-05-14 23:48:10 +03:00
Kostas DrakontidisandGitHub	744d145ec2	Enhance architecture documentation for OfficeSense system Expanded the architecture document to include detailed descriptions of the OfficeSense system, its components, data flow, design decisions, and validation plan.	2026-05-14 23:34:14 +03:00
Kostas DrakontidisandGitHub	a775109b36	Merge pull request #7 from dkwstas/pi_code_init Initial Pi code for public lookup api	2026-05-13 23:28:48 +03:00
Kostas DrakontidisandGitHub	e349ef92b7	Merge pull request #5 from dkwstas/ble_scanner_init Initial scanner code	2026-05-13 18:18:31 +03:00
Kostas DrakontidisandGitHub	095da18f73	Merge pull request #2 from dkwstas/ble_tag_init Initial tag code	2026-05-07 00:08:13 +03:00