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import os
import shutil
import subprocess
import json
import time
import requests
from fastapi import FastAPI, BackgroundTasks, HTTPException, Request
from fastapi.middleware.cors import CORSMiddleware
from pydantic import BaseModel
from playwright.sync_api import sync_playwright

app = FastAPI()

app.add_middleware(
    CORSMiddleware,
    allow_origins=["*"],
    allow_credentials=True,
    allow_methods=["*"],
    allow_headers=["*"],
)

# --- KONFIGURASI ---
UNITY_PATH = "/opt/unity/Editor/Unity"
PROJECT_PATH = "/app/UnityProject"
TEMP_DIR = "/tmp/zepeto_work"
os.makedirs(TEMP_DIR, exist_ok=True)

# --- MODEL DATA (Sesuai dengan kiriman Cloudflare + Cloudinary) ---
class ConversionRequest(BaseModel):
    file_url: str        # URL dari Cloudinary
    filename: str        # Nama file (contoh: baju_keren.fbx)
    zepeto_id: str
    zepeto_password: str

# --- FUNGSI: LOGIN & UPLOAD KE ZEPETO STUDIO ---
def upload_to_zepeto(file_path, z_id, z_pw):
    print(f"🔐 [Zepeto] Mencoba login untuk: {z_id}")
    try:
        with sync_playwright() as p:
            browser = p.chromium.launch(headless=True, args=['--no-sandbox'])
            context = browser.new_context(user_agent="Mozilla/5.0...")
            page = context.new_page()

            # Login Process
            page.goto("https://account.zepeto.me/signin?sm=1")
            page.fill('input[name="userId"]', z_id)
            page.fill('input[type="password"]', z_pw)
            page.click('button[type="submit"]')
            
            # Tunggu Token/Cookie
            page.wait_for_url(lambda u: "signin" not in u, timeout=15000)
            cookies = context.cookies()
            jwt_token = next((c['value'] for c in cookies if c['name'] == 'token'), None)
            browser.close()

            if not jwt_token:
                return False, "Gagal mendapatkan JWT Token"

            # API Upload Zepeto Studio
            print("🚀 [Zepeto] Mengirim file ke Studio API...")
            upload_url = "https://cf-api-studio.zepeto.me/api/items"
            headers = {"Authorization": f"Bearer {jwt_token}"}
            
            with open(file_path, "rb") as f:
                files = {"file": (os.path.basename(file_path), f, "application/octet-stream")}
                res = requests.post(upload_url, headers=headers, files=files)
            
            if res.status_code in [200, 201]:
                return True, "Sukses Upload"
            else:
                return False, f"API Error: {res.text}"
    except Exception as e:
        return False, str(e)

# --- FUNGSI UTAMA: DOWNLOAD -> UNITY -> UPLOAD ---
def process_pipeline(req: ConversionRequest):
    local_fbx = os.path.join(PROJECT_PATH, "Assets", req.filename)
    output_filename = req.filename.replace(".fbx", ".zepeto")
    local_zepeto = os.path.join(PROJECT_PATH, "output", output_filename)

    try:
        # 1. DOWNLOAD DARI CLOUDINARY
        print(f"📥 [Cloudinary] Downloading: {req.filename}")
        r = requests.get(req.file_url, stream=True)
        with open(local_fbx, 'wb') as f:
            for chunk in r.iter_content(chunk_size=8192):
                f.write(chunk)

        # 2. JALANKAN UNITY (Konversi & Optimasi Poligon)
        print("⚙️ [Unity] Memulai konversi & optimasi...")
        # Perhatikan: Method C# harus menangani decimation/polygon reduction
        cmd = [
            UNITY_PATH, "-batchmode", "-nographics",
            "-projectPath", PROJECT_PATH,
            "-executeMethod", "TestBuilder.ManualConvert",
            "-inputFile", req.filename,
            "-quit", "-logFile", "-"
        ]
        result = subprocess.run(cmd, capture_output=True, text=True)
        
        if not os.path.exists(local_zepeto):
            print(f"❌ [Unity] Gagal. Log: {result.stdout}")
            return

        # 3. UPLOAD KE ZEPETO STUDIO
        success, msg = upload_to_zepeto(local_zepeto, req.z_id, req.z_pw)
        
        if success:
            print(f"✅ [FINAL] {req.filename} Berhasil dikirim ke Zepeto!")
        else:
            print(f"❌ [FINAL] Gagal upload ke Zepeto Studio: {msg}")

    except Exception as e:
        print(f"❌ [CRITICAL] Pipeline Error: {e}")
    finally:
        # Cleanup
        if os.path.exists(local_fbx): os.remove(local_fbx)

@app.post("/convert")
async def api_convert(req: ConversionRequest, background_tasks: BackgroundTasks):
    background_tasks.add_task(process_pipeline, req)
    return {"status": "success", "message": "Proses konversi dan upload Zepeto dimulai di background"}