first commit

backend/models/Camera.js

@@ -0,0 +1,132 @@
+const { query } = require('../database/db');
+
+class Camera {
+    /**
+     * Get all cameras
+     * @returns {array} - All cameras
+     */
+    static async getAll() {
+        try {
+            const result = await query('SELECT * FROM cameras ORDER BY name', []);
+            return result.rows.map(this.formatRecord);
+        } catch (error) {
+            console.error('Error getting all cameras:', error);
+            throw error;
+        }
+    }
+
+    /**
+     * Get camera by ID
+     * @param {string} id - Camera ID
+     * @returns {object|null} - Camera or null
+     */
+    static async getById(id) {
+        try {
+            const result = await query('SELECT * FROM cameras WHERE id = $1', [id]);
+            if (result.rows.length === 0) return null;
+            return this.formatRecord(result.rows[0]);
+        } catch (error) {
+            console.error('Error getting camera by ID:', error);
+            throw error;
+        }
+    }
+
+    /**
+     * Get cameras by floor
+     * @param {string} floorId - Floor ID
+     * @returns {array} - Cameras on floor
+     */
+    static async getByFloor(floorId) {
+        try {
+            const result = await query('SELECT * FROM cameras WHERE floor_id = $1', [floorId]);
+            return result.rows.map(this.formatRecord);
+        } catch (error) {
+            console.error('Error getting cameras by floor:', error);
+            throw error;
+        }
+    }
+
+    /**
+     * Create a new camera
+     * @param {object} cameraData - Camera data
+     * @returns {object} - Created camera
+     */
+    static async create(cameraData) {
+        try {
+            const { id, name, cameraType, rtspUrl, floorId, model, status } = cameraData;
+            await query(`
+                INSERT INTO cameras (id, name, camera_type, rtsp_url, floor_id, model, status)
+                VALUES ($1, $2, $3, $4, $5, $6, $7)
+            `, [
+                id,
+                name,
+                cameraType,
+                rtspUrl || null,
+                floorId || null,
+                model || null,
+                status || 'offline'
+            ]);
+            return this.getById(id);
+        } catch (error) {
+            console.error('Error creating camera:', error);
+            throw error;
+        }
+    }
+
+    /**
+     * Update camera status
+     * @param {string} id - Camera ID
+     * @param {string} status - New status (online, offline, error)
+     * @returns {object|null} - Updated camera or null
+     */
+    static async updateStatus(id, status) {
+        try {
+            const result = await query(`
+                UPDATE cameras
+                SET status = $1, updated_at = CURRENT_TIMESTAMP
+                WHERE id = $2
+            `, [status, id]);
+            if (result.rowCount === 0) return null;
+            return this.getById(id);
+        } catch (error) {
+            console.error('Error updating camera status:', error);
+            throw error;
+        }
+    }
+
+    /**
+     * Delete a camera
+     * @param {string} id - Camera ID
+     * @returns {boolean} - True if deleted
+     */
+    static async delete(id) {
+        try {
+            const result = await query('DELETE FROM cameras WHERE id = $1', [id]);
+            return result.rowCount > 0;
+        } catch (error) {
+            console.error('Error deleting camera:', error);
+            throw error;
+        }
+    }
+
+    /**
+     * Format database record to camelCase
+     * @param {object} record - Database record
+     * @returns {object} - Formatted record
+     */
+    static formatRecord(record) {
+        return {
+            id: record.id,
+            name: record.name,
+            cameraType: record.camera_type,
+            rtspUrl: record.rtsp_url,
+            floorId: record.floor_id,
+            model: record.model,
+            status: record.status,
+            createdAt: record.created_at,
+            updatedAt: record.updated_at
+        };
+    }
+}
+
+module.exports = Camera;