"""CLI: python3 -m game.sim — startable Pitchwell v0 skirmish stub.

Demo path (GAMEPLAY.md Match loop Open→Seed→Break-lite):
  open both factions → Staff seeds Font/Cot/Yard → train Acolytes → attack Host HQ.
"""

from __future__ import annotations

import argparse
import json
import sys

from .catalog import FACTION_HOST, FACTION_STAFF, HZ
from .match import MatchPhase, open_match, seed_v0_path, train_t1_melee


def run_demo(ticks: int | None, hz: int, until_end: bool) -> int:
    m = open_match(hz=hz)
    print("OPEN", json.dumps(m.snapshot(), sort_keys=True))
    notes = seed_v0_path(m, FACTION_STAFF)
    print("SEED", " ".join(notes))

    m.tick_hz(int(50 * hz))
    print("AFTER_SEED", json.dumps(m.snapshot(), sort_keys=True))

    one = train_t1_melee(m, FACTION_STAFF, n=1)
    print("TRAIN_ONE", " ".join(one))
    m.tick_hz(int(10 * hz))
    m.grant_pitch(FACTION_STAFF, 500.0)
    train = train_t1_melee(m, FACTION_STAFF, n=4)
    print("TRAIN_ARMY", " ".join(train))
    m.tick_hz(int(40 * hz))
    ordered = m.order_attack_hq(FACTION_STAFF)
    print(f"ATTACK_HQ ordered={ordered}")

    if until_end:
        # Default --ticks must not cap --until-end (was HZ*5 → false early PASS).
        safety = ticks if ticks is not None else hz * 600
        for _ in range(safety):
            if m.phase == MatchPhase.ENDED:
                break
            m.tick_hz(1)
    else:
        m.tick_hz(max(1, ticks if ticks is not None else hz * 5))

    snap = m.snapshot()
    print("END", json.dumps(snap, sort_keys=True))
    if m.phase == MatchPhase.ENDED and m.winner in (FACTION_STAFF, FACTION_HOST):
        print(f"PASS: {m.winner} wins via HQ kill")
        return 0
    if m.phase == MatchPhase.ENDED and m.winner is None:
        print("PASS: draw (both HQs down)")
        return 0
    staff = snap["sides"][FACTION_STAFF]
    if "pitch_font" in staff["buildings"] and "coven_yard" in staff["buildings"]:
        if any(u == "acolyte" for u in staff["units"]):
            print("PASS: startable foundation (open+seed+T1) without forced end")
            return 0
    print("FAIL: foundation incomplete", file=sys.stderr)
    return 1


def main(argv: list[str] | None = None) -> int:
    p = argparse.ArgumentParser(description="Pitchwell headless match (game.sim)")
    p.add_argument("--hz", type=int, default=HZ)
    p.add_argument(
        "--ticks",
        type=int,
        default=None,
        help="extra ticks after attack (default HZ*5); with --until-end overrides safety cap",
    )
    p.add_argument(
        "--until-end",
        action="store_true",
        help="tick until HQ victory or safety cap (default HZ*600)",
    )
    args = p.parse_args(argv)
    return run_demo(args.ticks, args.hz, args.until_end)


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