Delete app.py

app.py

@@ -1,161 +0,0 @@
-from fastapi import FastAPI, UploadFile, File, Form
-from fastapi.responses import FileResponse
-from fastapi.middleware.cors import CORSMiddleware
-
-import librosa
-import numpy as np
-from pydub import AudioSegment, effects
-import uuid, os, json
-
-# =====================================================
-# APP
-# =====================================================
-
-app = FastAPI(title="MONX DJ API")
-
-app.add_middleware(
-    CORSMiddleware,
-    allow_origins=["*"],
-    allow_methods=["*"],
-    allow_headers=["*"],
-)
-
-# =====================================================
-# PATHS
-# =====================================================
-
-STATE_PATH = "monx_dj_state.json"
-UPLOAD_DIR = "uploads"
-OUTPUT_DIR = "outputs"
-
-os.makedirs(UPLOAD_DIR, exist_ok=True)
-os.makedirs(OUTPUT_DIR, exist_ok=True)
-
-# =====================================================
-# STATE
-# =====================================================
-
-DEFAULT_STATE = {
-    "weights": {
-        "bpm": 0.35,
-        "energy": 0.30,
-        "smooth": 0.20,
-        "drop_penalty": 0.15
-    },
-    "avg_score": 0.5,
-    "runs": 0
-}
-
-def load_state():
-    if os.path.exists(STATE_PATH):
-        with open(STATE_PATH, "r") as f:
-            return json.load(f)
-    return DEFAULT_STATE.copy()
-
-def save_state(state):
-    with open(STATE_PATH, "w") as f:
-        json.dump(state, f, indent=2)
-
-state = load_state()
-weights = state["weights"]
-
-# =====================================================
-# AUDIO ANALYSIS
-# =====================================================
-
-def analyze_audio(path):
-    y, sr = librosa.load(path, mono=True)
-    onset_env = librosa.onset.onset_strength(y=y, sr=sr)
-
-    try:
-        tempo = float(librosa.beat.tempo(onset_envelope=onset_env, sr=sr)[0])
-    except:
-        tempo = 120.0
-
-    rms = librosa.feature.rms(y=y)[0]
-    rms = librosa.util.normalize(rms)
-
-    drops = [
-        i for i in range(10, len(rms) - 10)
-        if rms[i] > np.mean(rms[i-10:i-1]) * 1.4
-    ]
-
-    return {"tempo": tempo, "energy": rms, "drops": drops}
-
-# =====================================================
-# CORE LOGIC
-# =====================================================
-
-def score_transition(a, b, t):
-    bpm_sim = max(0, 1 - abs(a["tempo"] - b["tempo"]) / 35)
-    energy_sim = max(0, 1 - abs(a["energy"][t] - b["energy"][0]))
-    drop_penalty = 1 if t in a["drops"] else 0
-
-    return (
-        weights["bpm"] * bpm_sim +
-        weights["energy"] * energy_sim +
-        weights["smooth"] * ((bpm_sim + energy_sim) / 2) -
-        weights["drop_penalty"] * drop_penalty
-    )
-
-def bpm_adjust(segment, from_bpm, to_bpm):
-    ratio = from_bpm / to_bpm if from_bpm > 0 and to_bpm > 0 else 1
-    if abs(1 - ratio) > 0.20:
-        return segment
-    new_rate = int(segment.frame_rate * ratio)
-    return segment._spawn(
-        segment.raw_data,
-        overrides={"frame_rate": new_rate}
-    ).set_frame_rate(segment.frame_rate)
-
-# =====================================================
-# API ENDPOINT
-# =====================================================
-
-@app.post("/mix")
-async def mix(
-    files: list[UploadFile] = File(...),
-    durations: str = Form("90,90"),
-    crossfade_sec: int = Form(12)
-):
-    durs = [float(x.strip()) for x in durations.split(",")]
-    tracks, analyses = [], []
-
-    for f in files:
-        path = os.path.join(UPLOAD_DIR, f"{uuid.uuid4().hex}_{f.filename}")
-        with open(path, "wb") as out:
-            out.write(await f.read())
-
-        audio = effects.normalize(AudioSegment.from_file(path))
-        tracks.append(audio)
-        analyses.append(analyze_audio(path))
-
-    mix = AudioSegment.silent(0)
-
-    for i in range(len(tracks)):
-        segment = tracks[i][:int(durs[i] * 1000)]
-        if i == 0:
-            mix = segment
-            continue
-
-        prev, curr = analyses[i - 1], analyses[i]
-        best_t = max(
-            range(5, min(len(prev["energy"]) - 1, 50)),
-            key=lambda t: score_transition(prev, curr, t)
-        )
-
-        mix = mix.append(segment, crossfade=int(crossfade_sec * 1000))
-
-    out_path = os.path.join(
-        OUTPUT_DIR, f"monx_mix_{uuid.uuid4().hex}.m4a"
-    )
-    mix.export(out_path, format="ipod", codec="aac", bitrate="192k")
-
-    state["runs"] += 1
-    save_state(state)
-
-    return FileResponse(
-        out_path,
-        media_type="audio/mp4",
-        filename="monx_mix.m4a"
-    )