"""PyInstaller entry shim.

Wrapped in a top-level try/except so any startup failure is written to
%LOCALAPPDATA%\\sephiria_inv\\startup.log and surfaced to the user via a
Tk messagebox when possible. Without this wrapper, --noconsole builds
exit silently on import-time errors and the user sees "nothing happens".
"""

from __future__ import annotations

import os
import sys
import traceback
from datetime import datetime


def _log_path() -> str:
    base = os.environ.get("LOCALAPPDATA") or os.path.expanduser("~")
    folder = os.path.join(base, "sephiria_inv")
    try:
        os.makedirs(folder, exist_ok=True)
    except OSError:
        folder = os.path.dirname(os.path.abspath(sys.argv[0])) or "."
    return os.path.join(folder, "startup.log")


def _write_log(msg: str) -> str:
    path = _log_path()
    try:
        with open(path, "a", encoding="utf-8") as fh:
            fh.write(f"\n=== {datetime.now().isoformat()} ===\n{msg}\n")
    except OSError:
        pass
    return path


def _show_error(title: str, body: str) -> None:
    try:
        import tkinter as tk
        from tkinter import scrolledtext
        root = tk.Tk()
        root.title(title)
        root.geometry("760x420")
        txt = scrolledtext.ScrolledText(root, wrap="word")
        txt.pack(fill="both", expand=True)
        txt.insert("1.0", body)
        tk.Button(root, text="Close", command=root.destroy).pack(pady=4)
        root.mainloop()
    except Exception:
        # Tk itself is broken; nothing we can show.
        pass


def _main() -> int:
    try:
        from sephiria_inv.__main__ import main
    except BaseException:
        tb = traceback.format_exc()
        log = _write_log("IMPORT FAIL\n" + tb)
        _show_error(
            "sephiria_inv: import failed",
            f"Failed to import sephiria_inv.__main__\n\nLog: {log}\n\n{tb}",
        )
        return 11
    try:
        return int(main() or 0)
    except SystemExit:
        raise
    except BaseException:
        tb = traceback.format_exc()
        log = _write_log("RUNTIME FAIL\n" + tb)
        _show_error(
            "sephiria_inv: runtime error",
            f"Crashed during main()\n\nLog: {log}\n\n{tb}",
        )
        return 12


if __name__ == "__main__":
    raise SystemExit(_main())