feat: implement comprehensive Firebase Functions backend for equipment management and migrate core repository services

em2rp/functions/generateTTS.js

@@ -4,9 +4,9 @@
  * Avec système de cache dans Firebase Storage
  */
 
-const textToSpeech = require('@google-cloud/text-to-speech');
-const crypto = require('crypto');
-const logger = require('firebase-functions/logger');
+const textToSpeech = require("@google-cloud/text-to-speech");
+const crypto = require("crypto");
+const logger = require("firebase-functions/logger");
 
 /**
  * Génère un hash MD5 pour le texte (utilisé comme clé de cache)
@@ -16,10 +16,10 @@ const logger = require('firebase-functions/logger');
 function generateCacheKey(text, voiceConfig = {}) {
   const cacheString = JSON.stringify({
     text,
-    lang: voiceConfig.languageCode || 'fr-FR',
-    voice: voiceConfig.name || 'fr-FR-Standard-B',
+    lang: voiceConfig.languageCode || "fr-FR",
+    voice: voiceConfig.name || "fr-FR-Standard-B",
   });
-  return crypto.createHash('md5').update(cacheString).digest('hex');
+  return crypto.createHash("md5").update(cacheString).digest("hex");
 }
 
 /**
@@ -34,21 +34,21 @@ async function generateTTS(text, storage, bucket, voiceConfig = {}) {
   try {
     // Validation du texte
     if (!text || text.trim().length === 0) {
-      throw new Error('Text cannot be empty');
+      throw new Error("Text cannot be empty");
     }
 
     if (text.length > 5000) {
-      throw new Error('Text too long (max 5000 characters)');
+      throw new Error("Text too long (max 5000 characters)");
     }
 
     // Configuration par défaut de la voix
     const defaultVoiceConfig = {
-      languageCode: 'fr-FR',
-      name: 'fr-FR-Standard-B', // Voix masculine française (Standard = gratuit)
-      ssmlGender: 'MALE',
+      languageCode: "fr-FR",
+      name: "fr-FR-Standard-B", // Voix masculine française (Standard = gratuit)
+      ssmlGender: "MALE",
     };
 
-    const finalVoiceConfig = { ...defaultVoiceConfig, ...voiceConfig };
+    const finalVoiceConfig = {...defaultVoiceConfig, ...voiceConfig};
 
     // Générer la clé de cache
     const cacheKey = generateCacheKey(text, finalVoiceConfig);
@@ -59,11 +59,11 @@ async function generateTTS(text, storage, bucket, voiceConfig = {}) {
     const [exists] = await file.exists();
 
     if (exists) {
-      logger.info('[generateTTS] ✓ Cache HIT', { cacheKey, text: text.substring(0, 50) });
+      logger.info("[generateTTS] ✓ Cache HIT", {cacheKey, text: text.substring(0, 50)});
 
       // Générer une URL signée valide 7 jours
       const [url] = await file.getSignedUrl({
-        action: 'read',
+        action: "read",
         expires: Date.now() + 7 * 24 * 60 * 60 * 1000, // 7 jours
       });
 
@@ -74,7 +74,7 @@ async function generateTTS(text, storage, bucket, voiceConfig = {}) {
       };
     }
 
-    logger.info('[generateTTS] ○ Cache MISS - Generating audio', {
+    logger.info("[generateTTS] ○ Cache MISS - Generating audio", {
       cacheKey,
       text: text.substring(0, 50),
       voice: finalVoiceConfig.name,
@@ -85,10 +85,10 @@ async function generateTTS(text, storage, bucket, voiceConfig = {}) {
 
     // Configuration de la requête
     const request = {
-      input: { text: text },
+      input: {text: text},
       voice: finalVoiceConfig,
       audioConfig: {
-        audioEncoding: 'MP3',
+        audioEncoding: "MP3",
         speakingRate: 0.9, // Légèrement plus lent pour meilleure compréhension
         pitch: -2.0, // Voix un peu plus grave
         volumeGainDb: 0.0,
@@ -99,17 +99,17 @@ async function generateTTS(text, storage, bucket, voiceConfig = {}) {
     const [response] = await client.synthesizeSpeech(request);
 
     if (!response.audioContent) {
-      throw new Error('No audio content returned from TTS API');
+      throw new Error("No audio content returned from TTS API");
     }
 
-    logger.info('[generateTTS] ✓ Audio generated', {
+    logger.info("[generateTTS] ✓ Audio generated", {
       size: response.audioContent.length,
     });
 
     // Sauvegarder dans Firebase Storage
     await file.save(response.audioContent, {
       metadata: {
-        contentType: 'audio/mpeg',
+        contentType: "audio/mpeg",
         metadata: {
           text: text.substring(0, 100), // Premier 100 caractères pour debug
           voice: finalVoiceConfig.name,
@@ -118,11 +118,11 @@ async function generateTTS(text, storage, bucket, voiceConfig = {}) {
       },
     });
 
-    logger.info('[generateTTS] ✓ Audio cached', { fileName });
+    logger.info("[generateTTS] ✓ Audio cached", {fileName});
 
     // Générer une URL signée
     const [url] = await file.getSignedUrl({
-      action: 'read',
+      action: "read",
       expires: Date.now() + 7 * 24 * 60 * 60 * 1000, // 7 jours
     });
 
@@ -132,7 +132,7 @@ async function generateTTS(text, storage, bucket, voiceConfig = {}) {
       cacheKey,
     };
   } catch (error) {
-    logger.error('[generateTTS] ✗ Error', {
+    logger.error("[generateTTS] ✗ Error", {
       error: error.message,
       code: error.code,
       text: text?.substring(0, 50),
@@ -142,5 +142,5 @@ async function generateTTS(text, storage, bucket, voiceConfig = {}) {
   }
 }
 
-module.exports = { generateTTS, generateCacheKey };
+module.exports = {generateTTS, generateCacheKey};