#!/usr/bin/env python3
"""Generate a Ludusavi secondary manifest for the PC hacks served by RomM.

Pokémon Essentials (v18+) writes saves to:
    %USERPROFILE%/Saved Games/<Game.ini Title>/Game.rxdata
The exact subfolder is the `Title=` field of each game's Game.ini, so we read it
straight out of the placed archive instead of guessing. Older Essentials (<=v17)
saved into the game folder itself — covered by the commented `<base>` fallback.

Point Ludusavi at the emitted YAML as a secondary/custom manifest, then pair its
backup target with Syncthing to replicate saves across Windows / Steam Deck.

Run on valhalla after romhack-pc-migrate.py --apply:
    python3 gen-ludusavi-manifest.py > ludusavi/pokemon-pc-hacks.yaml
"""
import os, sys, zipfile, configparser, io

WIN = "/storage1/Emulation/roms/windows"


def sq(s):
    """YAML single-quoted scalar: an embedded apostrophe must be doubled."""
    return "'" + str(s).replace("'", "''") + "'"


def game_title(zip_path):
    """Pull Title= from the first */Game.ini inside the archive, if present."""
    try:
        with zipfile.ZipFile(zip_path) as z:
            ini = next((n for n in z.namelist() if n.lower().endswith("game.ini")), None)
            if not ini:
                return None
            raw = z.read(ini).decode("utf-8", "ignore")
        cp = configparser.ConfigParser(strict=False, interpolation=None)
        cp.read_string(raw if raw.lstrip().startswith("[") else "[Game]\n" + raw)
        for sect in cp.sections():
            if cp.has_option(sect, "Title"):
                return cp.get(sect, "Title").strip()
    except Exception as e:
        print(f"# WARN {os.path.basename(zip_path)}: {e}", file=sys.stderr)
    return None


def main():
    print("# Ludusavi secondary manifest — Pokémon PC hacks (generated)")
    print("# Add via Ludusavi > Settings > Manifests, or merge into a custom manifest.")
    print("# Save path = ~/Saved Games/<Game.ini Title> (Essentials v18+).")
    print("# Verify each on first save; for Essentials <=v17 uncomment the <base> line.\n")
    zips = sorted(f for f in os.listdir(WIN) if f.lower().endswith(".zip"))
    for f in zips:
        name = os.path.splitext(f)[0]               # "Pokemon - <Hack> (Hack)"
        title = game_title(os.path.join(WIN, f))
        print(f"{sq(name)}:")
        print("  files:")
        if title:
            print(f"    {sq('<home>/Saved Games/' + title)}:")
            print("      tags: [save]")
        else:
            print(f"    # TODO no Game.ini Title found — set save path manually")
            print(f"    {sq('<home>/Saved Games/' + name)}:")
            print("      tags: [save]")
        print("    # '<base>':            # older Essentials saved in the game folder")
        print("    #   tags: [save]")


if __name__ == "__main__":
    main()