"""
Portable Build Script for WhisperVoice.
=======================================

Creates a single-file portable .exe using PyInstaller.
All data (settings, models) will be stored next to the .exe at runtime.
"""

import os
import shutil
import PyInstaller.__main__
from pathlib import Path

def build_portable():
    # 1. Setup Paths
    project_root = Path(__file__).parent.absolute()
    dist_path = project_root / "dist"
    build_path = project_root / "build"
    
    # 2. Define Assets to bundle (into the .exe)
    # Format: (Source, Destination relative to bundle root)
    data_files = [
        # QML files
        ("src/ui/qml/*.qml", "src/ui/qml"),
        ("src/ui/qml/*.svg", "src/ui/qml"),
        ("src/ui/qml/*.qsb", "src/ui/qml"),
        ("src/ui/qml/fonts/ttf/*.ttf", "src/ui/qml/fonts/ttf"),
        # Subprocess worker script (CRITICAL for transcription)
        ("src/core/transcribe_worker.py", "src/core"),
    ]
    
    # Convert to PyInstaller format "--add-data source;dest" (Windows uses ';')
    add_data_args = []
    for src, dst in data_files:
        add_data_args.extend(["--add-data", f"{src}{os.pathsep}{dst}"])

    # 3. Run PyInstaller
    print("🚀 Starting Portable Build...")
    print("⏳ This may take 5-10 minutes...")
    
    PyInstaller.__main__.run([
        "bootstrapper.py",               # Entry point (Tiny Installer)
        "--name=WhisperVoice",           # EXE name
        "--onefile",                     # Single EXE
        "--noconsole",                   # No terminal window
        "--clean",                       # Clean cache
        
        # Bundle the app source to be extracted by bootstrapper
        # The bootstrapper expects 'app_source' folder in bundled resources
        "--add-data", f"src{os.pathsep}app_source/src",
        "--add-data", f"main.py{os.pathsep}app_source",
        "--add-data", f"requirements.txt{os.pathsep}app_source",
        
        # Add assets
        "--add-data", f"src/ui/qml{os.pathsep}app_source/src/ui/qml",
        "--add-data", f"assets{os.pathsep}app_source/assets",
        
        # No heavy collections! 
        # The bootstrapper uses internal pip to install everything.
        
        # Exclude heavy modules to ensure this exe stays tiny
        "--exclude-module", "faster_whisper",
        "--exclude-module", "torch",
        "--exclude-module", "PySide6",
        "--exclude-module", "llama_cpp",

        
        # Icon
        # "--icon=icon.ico",
    ])


    print("\n" + "="*60)
    print("✅ BUILD COMPLETE!")
    print("="*60)
    print(f"\n📍 Output: {dist_path / 'WhisperVoice.exe'}")
    print("\n📋 First run instructions:")
    print("   1. Place WhisperVoice.exe in a folder (e.g., C:\\WhisperVoice\\)")
    print("   2. Run it - it will create 'models' and 'settings.json' folders")
    print("   3. The app will download the Whisper model on first transcription\n")
    print("💡 TIP: Keep the .exe with its generated files for true portability!")

if __name__ == "__main__":
    # Ensure we are in project root
    os.chdir(Path(__file__).parent)
    build_portable()