🎨 优化扩展模块，完成ai接入和对话功能

data/st-core-scripts/scripts/extensions/tts/pollinations.js

@@ -0,0 +1,151 @@
+import { getRequestHeaders } from '../../../script.js';
+import { splitRecursive } from '../../utils.js';
+import { getPreviewString, saveTtsProviderSettings } from './index.js';
+
+export class PollinationsTtsProvider {
+    settings;
+    voices = [];
+    separator = ' . ';
+    audioElement = document.createElement('audio');
+
+    defaultSettings = {
+        // TODO: Make this configurable
+        model: 'openai-audio',
+        voiceMap: {},
+    };
+
+    get settingsHtml() {
+        return '';
+    }
+
+    onSettingsChange() {
+        this.voices = [];
+        saveTtsProviderSettings();
+    }
+
+    async loadSettings(settings) {
+        // Populate Provider UI given input settings
+        if (Object.keys(settings).length == 0) {
+            console.info('Using default TTS Provider settings');
+        }
+
+        // Only accept keys defined in defaultSettings
+        this.settings = this.defaultSettings;
+
+        for (const key in settings) {
+            if (key in this.settings) {
+                this.settings[key] = settings[key];
+            } else {
+                throw `Invalid setting passed to TTS Provider: ${key}`;
+            }
+        }
+
+        try {
+            await this.checkReady();
+            console.debug('Pollinations TTS: Settings loaded');
+        } catch {
+            console.debug('Pollinations TTS: Settings loaded, but not ready');
+        }
+    }
+
+    // Perform a simple readiness check by trying to fetch voiceIds
+    async checkReady() {
+        await this.fetchTtsVoiceObjects();
+    }
+
+    async onRefreshClick() {
+        await this.checkReady();
+    }
+
+    //#################//
+    //  TTS Interfaces //
+    //#################//
+
+    async getVoice(voiceName) {
+        if (this.voices.length == 0) {
+            this.voices = await this.fetchTtsVoiceObjects();
+        }
+        const match = this.voices.filter(
+            voice => voice.name == voiceName || voice.voice_id == voiceName,
+        )[0];
+        if (!match) {
+            throw `TTS Voice name ${voiceName} not found`;
+        }
+        return match;
+    }
+
+    /**
+     * Generate TTS audio for the given text using the specified voice.
+     * @param {string} text Text to generate
+     * @param {string} voiceId Voice ID
+     * @returns {AsyncGenerator<Response>} Audio response generator
+     */
+    generateTts(text, voiceId) {
+        return this.fetchTtsGeneration(text, voiceId);
+    }
+
+    //###########//
+    // API CALLS //
+    //###########//
+    async fetchTtsVoiceObjects() {
+        const response = await fetch('/api/speech/pollinations/voices', {
+            method: 'POST',
+            headers: getRequestHeaders(),
+            body: JSON.stringify({ model: this.settings.model }),
+        });
+
+        if (!response.ok) {
+            throw new Error(`HTTP ${response.status}: ${await response.text()}`);
+        }
+        const responseJson = await response.json();
+        return responseJson
+            .sort()
+            .map(x => ({ name: x, voice_id: x, preview_url: false, lang: 'en-US' }));
+    }
+
+    /**
+     * Preview TTS for a given voice ID.
+     * @param {string} id Voice ID
+     */
+    async previewTtsVoice(id) {
+        this.audioElement.pause();
+        this.audioElement.currentTime = 0;
+        const voice = await this.getVoice(id);
+        const text = getPreviewString(voice.lang);
+        for await (const response of this.generateTts(text, id)) {
+            const audio = await response.blob();
+            const url = URL.createObjectURL(audio);
+            await new Promise(resolve => {
+                const audioElement = new Audio();
+                audioElement.src = url;
+                audioElement.play();
+                audioElement.onended = () => resolve();
+            });
+            URL.revokeObjectURL(url);
+        }
+    }
+
+    async* fetchTtsGeneration(text, voiceId) {
+        const MAX_LENGTH = 1000;
+        console.info(`Generating new TTS for voice_id ${voiceId}`);
+        const chunks = splitRecursive(text, MAX_LENGTH);
+        for (const chunk of chunks) {
+            const response = await fetch('/api/speech/pollinations/generate', {
+                method: 'POST',
+                headers: getRequestHeaders(),
+                body: JSON.stringify({
+                    model: this.settings.model,
+                    text: 'Say exactly this and nothing else:' + '\n' + chunk,
+                    voice: voiceId,
+                }),
+            });
+
+            if (!response.ok) {
+                toastr.error(response.statusText, 'TTS Generation Failed');
+                throw new Error(`HTTP ${response.status}: ${await response.text()}`);
+            }
+
+            yield response;
+        }
+    }
+}