"""Build Ameba Control Panel executable with PyInstaller."""
from __future__ import annotations

import argparse
import os
import sys
from pathlib import Path


def _add_data(src: Path, dest: str) -> str:
    sep = ";" if os.name == "nt" else ":"
    return f"{src}{sep}{dest}"


def _write_version_file(root: Path, version: str) -> Path:
    parts = (version.split(".") + ["0", "0", "0"])[:4]
    csv = ", ".join(parts)
    dot = ".".join(parts)
    out = root / "build" / "version_info.txt"
    out.parent.mkdir(parents=True, exist_ok=True)
    out.write_text(f"""\
VSVersionInfo(
  ffi=FixedFileInfo(filevers=({csv}), prodvers=({csv})),
  kids=[
    StringFileInfo([StringTable('040904B0', [
      StringStruct('CompanyName', 'Realtek'),
      StringStruct('FileDescription', 'Ameba Control Panel'),
      StringStruct('FileVersion', '{dot}'),
      StringStruct('ProductName', 'Ameba Control Panel'),
      StringStruct('ProductVersion', '{dot}'),
    ])]),
    VarFileInfo([VarStruct('Translation', [0x0409, 0x04B0])])
  ]
)
""", encoding="utf-8")
    return out


_EXCLUDES = [
    "tkinter",
    "matplotlib",
    "numpy",
    "scipy",
    "pandas",
    "PIL",
    "PySide6.QtWebEngine",
    "PySide6.QtWebEngineCore",
    "PySide6.QtWebEngineWidgets",
    "PySide6.Qt3DCore",
    "PySide6.Qt3DRender",
    "PySide6.Qt3DInput",
    "PySide6.Qt3DAnimation",
    "PySide6.Qt3DExtras",
    "PySide6.Qt3DLogic",
    "PySide6.QtCharts",
    "PySide6.QtDataVisualization",
    "PySide6.QtMultimedia",
    "PySide6.QtMultimediaWidgets",
    "PySide6.QtQuick",
    "PySide6.QtQuick3D",
    "PySide6.QtQuickWidgets",
    "PySide6.QtQml",
    "PySide6.QtRemoteObjects",
    "PySide6.QtSensors",
    "PySide6.QtSerialBus",
    "PySide6.QtBluetooth",
    "PySide6.QtNfc",
    "PySide6.QtPositioning",
    "PySide6.QtLocation",
    "PySide6.QtTest",
    "PySide6.QtPdf",
    "PySide6.QtPdfWidgets",
    "PySide6.QtSvgWidgets",
    "PySide6.QtNetworkAuth",
    "PySide6.QtDesigner",
    "PySide6.QtHelp",
    "PySide6.QtOpenGL",
    "PySide6.QtOpenGLWidgets",
    "PySide6.QtSpatialAudio",
    "PySide6.QtStateMachine",
    "PySide6.QtTextToSpeech",
    "PySide6.QtHttpServer",
    "PySide6.QtGraphs",
]


def build(*, onefile: bool, icon: str | None = None, splash: str | None = None) -> None:
    root = Path(__file__).resolve().parent.parent
    entry = root / "script" / "auto_run.py"
    flash_dir = root / "Flash"

    if not entry.exists():
        sys.exit(f"Entry script missing: {entry}")
    if not flash_dir.exists():
        sys.exit(f"Flash folder missing: {flash_dir}")

    os.chdir(root)

    try:
        import PyInstaller.__main__ as pyinstaller
    except ImportError:
        sys.exit("PyInstaller is not installed. Run: pip install PyInstaller")

    sys.path.insert(0, str(root))
    from ameba_control_panel.config import APP_VERSION
    version_file = _write_version_file(root, APP_VERSION)

    args = [
        "--noconfirm",
        "--clean",
        "--windowed",
        "--onefile" if onefile else "--onedir",
        f"--name=AmebaControlPanel",
        f"--distpath={root / 'dist'}",
        f"--workpath={root / 'build'}",
        f"--specpath={root}",
        f"--version-file={version_file}",
        "--paths", str(root),
        "--collect-all", "PySide6",
        "--hidden-import=serial",
        "--hidden-import=serial.tools.list_ports",
        "--hidden-import=pyDes",
        "--hidden-import=colorama",
        "--add-data", _add_data(flash_dir, "Flash"),
    ]

    for mod in _EXCLUDES:
        args.extend(["--exclude-module", mod])

    if icon:
        icon_path = Path(icon)
        if icon_path.exists():
            args.extend(["--icon", str(icon_path)])
        else:
            print(f"Warning: icon not found: {icon_path}", file=sys.stderr)

    if splash:
        splash_path = Path(splash)
        if splash_path.exists():
            args.extend(["--splash", str(splash_path)])
        else:
            print(f"Warning: splash image not found: {splash_path}", file=sys.stderr)

    args.append(str(entry))
    pyinstaller.run(args)


if __name__ == "__main__":
    parser = argparse.ArgumentParser(description="Build Ameba Control Panel EXE")
    parser.add_argument("--onefile", action="store_true", help="Create single-file exe (slower startup)")
    parser.add_argument("--icon", help="Path to .ico file")
    parser.add_argument("--splash", help="Path to splash screen image (.png)")
    opts = parser.parse_args()
    # Default to --onedir for fast startup
    build(onefile=opts.onefile, icon=opts.icon, splash=opts.splash)