import os, uuid, json, tempfile from fastapi import APIRouter, HTTPException, Depends, UploadFile, File, BackgroundTasks from fastapi.responses import FileResponse from pydantic import BaseModel from typing import Optional, Any from app.config import settings from app.core.vst_engine import PluginManager, HAS_PEDALBOARD, HAS_PYFLUIDSYNTH from app.core.render_engine import PythonRenderEngine from app.core.soundfont_inspector import SoundFontInspector from app.core.soundfont_converter import SoundFontConverter from app.core.soundfont_scanner import SoundFontAutoScanner from app.api.v1.auth import get_current_user router = APIRouter() UPLOAD_SF_DIR = os.path.join(settings.STORAGE_DIR, "soundfonts") os.makedirs(UPLOAD_SF_DIR, exist_ok=True) SYSTEM_SF_DIR = "/opt/daw_engine/soundfonts" _inspector = None _scanner = None def get_inspector(): global _inspector if _inspector is None: _inspector = SoundFontInspector(system_sf_dir=SYSTEM_SF_DIR, upload_sf_dir=UPLOAD_SF_DIR) return _inspector def get_scanner(): global _scanner if _scanner is None: _scanner = SoundFontAutoScanner(system_sf_dir=SYSTEM_SF_DIR, upload_sf_dir=UPLOAD_SF_DIR) _scanner.scan_once() return _scanner @router.get("/available") async def list_plugins(current_user: dict = Depends(get_current_user)): pm = PluginManager(upload_sf_dir=UPLOAD_SF_DIR) return pm.list_available() @router.get("/default-soundfonts") async def list_default_soundfonts(): static_sf_dir = os.path.join(os.path.dirname(os.path.dirname(os.path.dirname(__file__))), "static", "soundfonts") result = [] if os.path.isdir(static_sf_dir): for f in os.listdir(static_sf_dir): if f.endswith(".sf2") or f.endswith(".sf3"): result.append({ "id": os.path.splitext(f)[0], "name": f, "file": f, "url": f"/soundfonts/{f}" }) return result @router.get("/soundfonts/catalog") async def soundfont_catalog(current_user: dict = Depends(get_current_user)): scanner = get_scanner() full_catalog = scanner.get_catalog() inspector = get_inspector() condensed_catalog = inspector.get_condensed_catalog_summary(full_catalog) return {"full_catalog": full_catalog, "condensed_catalog": condensed_catalog} @router.get("/soundfont-instruments/{sf_id}") async def list_soundfont_instruments(sf_id: str, current_user: dict = Depends(get_current_user)): pm = PluginManager(upload_sf_dir=UPLOAD_SF_DIR) presets = pm.list_soundfont_instruments(sf_id) return {"presets": presets, "count": len(presets)} @router.post("/upload-soundfont") async def upload_soundfont( file: UploadFile = File(...), background_tasks: BackgroundTasks = None, current_user: dict = Depends(get_current_user) ): if not (file.filename and (file.filename.endswith(".sf2") or file.filename.endswith(".sf3"))): raise HTTPException(status_code=400, detail="Only .sf2 / .sf3 files are allowed") contents = await file.read() if not PluginManager.validate_sf2_header(contents): raise HTTPException(status_code=400, detail="Invalid SoundFont file: missing RIFF/sfbk header") file_ext = os.path.splitext(file.filename)[1] file_uuid = str(uuid.uuid4()) # Store original name in a sidecar file base_name = os.path.splitext(file.filename)[0].replace('/', '_').replace('\\', '_') file_id = file_uuid + file_ext dest_path = os.path.join(UPLOAD_SF_DIR, file_id) with open(dest_path, "wb") as f: f.write(contents) # Save metadata with original name meta_path = os.path.join(UPLOAD_SF_DIR, file_uuid + ".meta") with open(meta_path, "w", encoding="utf-8") as f: import json json.dump({"original_name": file.filename, "uuid": file_uuid, "file": file_id}, f) scanner = get_scanner() if background_tasks: background_tasks.add_task(scanner.scan_once) else: scanner.scan_once() return {"id": file_id, "name": file.filename, "path": dest_path, "size_bytes": len(contents)} @router.delete("/soundfont/{sf_id}") async def delete_soundfont(sf_id: str, current_user: dict = Depends(get_current_user)): base_id = sf_id.replace("sf_", "") deleted = False for d in [UPLOAD_SF_DIR, os.path.join(os.path.dirname(os.path.dirname(os.path.dirname(__file__))), "static", "soundfonts"), SYSTEM_SF_DIR]: if not os.path.isdir(d): continue for f in os.listdir(d): if os.path.splitext(f)[0] == base_id: # Skip system dir — only allow deleting uploads if d == SYSTEM_SF_DIR: raise HTTPException(status_code=403, detail="System soundfonts cannot be deleted via this endpoint") path = os.path.join(d, f) os.remove(path) meta_path = os.path.join(d, os.path.splitext(f)[0] + ".meta") if os.path.isfile(meta_path): os.remove(meta_path) deleted = True break if deleted: break if not deleted: raise HTTPException(status_code=404, detail="SoundFont not found") get_scanner().scan_once() return {"deleted": True, "sf_id": sf_id} @router.get("/soundfonts/download/{sf_id}") async def download_soundfont_asset(sf_id: str): clean_id = sf_id.replace("sf_", "") if sf_id.startswith("sf_") else sf_id for base_dir in [UPLOAD_SF_DIR, SYSTEM_SF_DIR]: if not os.path.isdir(base_dir): continue for ext in [".sf2", ".sf3"]: for fname in os.listdir(base_dir): fbase, fext = os.path.splitext(fname) if fext.lower() == ext and fbase.lower() == clean_id.lower(): full = os.path.join(base_dir, fname) return FileResponse(full, media_type="application/octet-stream", filename=f"soundfont{ext}") raise HTTPException(status_code=404, detail="SoundFont asset not found") class RenderRequest(BaseModel): project_json: dict output_filename: Optional[str] = "render_output.wav" @router.post("/render") async def render_project( req: RenderRequest, current_user: dict = Depends(get_current_user) ): engine = PythonRenderEngine() output_path = os.path.join(settings.PROCESSED_DIR, req.output_filename or "render_output.wav") try: result_path = engine.render_project(req.project_json, output_path) return {"url": f"/static/audio/processed/{os.path.basename(result_path)}", "path": result_path} except Exception as e: raise HTTPException(status_code=500, detail=f"Render failed: {str(e)}")