feat: cài đặt tính năng AI cho để prompt

app/static/js/services/aiGateway.js

@@ -129,6 +129,32 @@ const AIGateway = (function() {
     ];
   }
 
+  function buildAIPromptContext(dawState) {
+    const tracks = (dawState.tracks || []).map(t => ({
+      id: t.id,
+      name: t.name,
+      type: t.buffer ? 'audio' : 'empty',
+      hasBuffer: !!t.buffer,
+      clipsCount: t.clips ? t.clips.length : (t.buffer ? 1 : 0),
+      muted: t.muted,
+      solo: t.solo,
+      volumeDb: t.volumeDb ?? 0,
+      pan: t.pan ?? 0
+    }));
+    return {
+      tempo: dawState.bpm || 120,
+      timeSignature: '4/4',
+      selectedTrackId: dawState.selectedTrackId || null,
+      playheadPosition: dawState.currentTime || 0,
+      selection: (dawState.selLeft !== null && dawState.selRight !== null && dawState.selRight > dawState.selLeft) ? {
+        start: parseFloat(dawState.selLeft.toFixed(3)),
+        end: parseFloat(dawState.selRight.toFixed(3)),
+        length: parseFloat((dawState.selRight - dawState.selLeft).toFixed(3))
+      } : null,
+      tracks
+    };
+  }
+
   async function executePrompt({ prompt, provider, model, apiKey, baseUrl, dawContext, tools }) {
     const messages = buildUserMessage(prompt, dawContext);
     const toolList = tools || DEFAULT_TOOLS;
@@ -155,12 +181,40 @@ const AIGateway = (function() {
     };
   }
 
+  async function createMidiItem(args) {
+    return fetch('/api/audio_editor', {
+      method: 'POST',
+      headers: { 'Content-Type': 'application/json' },
+      body: JSON.stringify({ action: 'add_midi', ...args })
+    }).then(r => r.json());
+  }
+
+  async function modifyMidiNotes(args) {
+    return fetch('/api/audio_editor', {
+      method: 'POST',
+      headers: { 'Content-Type': 'application/json' },
+      body: JSON.stringify({ action: 'modify_midi_notes', ...args })
+    }).then(r => r.json());
+  }
+
+  async function processAIDSP(args) {
+    return fetch('/api/ai_dsp_engine', {
+      method: 'POST',
+      headers: { 'Content-Type': 'application/json' },
+      body: JSON.stringify({ action: 'process_ai_dsp', ...args })
+    }).then(r => r.json());
+  }
+
   return {
     DEFAULT_TOOLS,
     callLLM,
     extractFunctionCalls,
     buildUserMessage,
-    executePrompt
+    buildAIPromptContext,
+    executePrompt,
+    createMidiItem,
+    modifyMidiNotes,
+    processAIDSP
   };
 })();