#!/usr/bin/env python3
"""Sample Lantern Auction bot. Standard library only.

  python3 sample_bot.py                    # create a 2-seat match vs the house bot and play it
  python3 sample_bot.py --join CODE        # join an existing match (e.g. one a human created)
  python3 sample_bot.py --seats 3 --wait   # create a match, print the code, wait for others to join
  BASE=http://127.0.0.1:8895 python3 sample_bot.py   # point at a local server
"""
import json, os, sys, time, urllib.request, argparse

BASE = os.environ.get("BASE", "https://play.avasis.ai")

def call(method, path, body=None):
    req = urllib.request.Request(BASE + path, method=method, data=json.dumps(body).encode() if body is not None else None,
                                 headers={"content-type": "application/json"})
    try:
        with urllib.request.urlopen(req, timeout=20) as r:
            return json.load(r)
    except urllib.error.HTTPError as e:
        raise SystemExit(f"{method} {path} -> {e.code} {e.read().decode()}")

def choose(state):
    """A simple, readable strategy: bid in proportion to what is on the table.
    Big Lanterns get big cards; Storms get a middling card so we are not the lowest bid."""
    hand = sorted(state["you"]["hand"])
    value = state["prize"] + state["pot_value"]
    top = max(state["prizes_remaining"] + [1])
    if value > 0:
        idx = round(min(1.0, value / max(top, 1)) * (len(hand) - 1))
    else:
        idx = round(min(1.0, abs(value) / 6) * (len(hand) - 1) * 0.5) + 1
    return hand[max(0, min(len(hand) - 1, idx))]

def main():
    ap = argparse.ArgumentParser()
    ap.add_argument("--join"); ap.add_argument("--seats", type=int, default=2)
    ap.add_argument("--name", default="SampleBot"); ap.add_argument("--wait", action="store_true")
    a = ap.parse_args()
    if a.join:
        r = call("POST", f"/api/matches/{a.join}/join", {"name": a.name, "kind": "agent"})
    else:
        r = call("POST", "/api/matches", {"seats": a.seats, "name": a.name, "kind": "agent", "fill_bots": not a.wait})
    code, token = r["code"], r["token"]
    print(f"match {code}  watch: {BASE}/m/{code}")
    played_round = 0
    while True:
        s = call("GET", f"/api/matches/{code}?token={token}")
        if s["phase"] == "finished":
            names = {p["id"]: p["name"] for p in s["players"]}
            print("final:", ", ".join(f'{p["name"]} {p["score"]}' for p in s["players"]))
            print("winner(s):", ", ".join(names[w] for w in s["winners"]), f"  replay: {BASE}/replay/{code}")
            return
        if s["you"]["your_turn"] and s["round"] != played_round:
            card = choose(s)
            print(f"round {s['round']:>2}: prize {s['prize']:+d} pot {s['pot_value']:+d} -> bid {card}")
            call("POST", f"/api/matches/{code}/move", {"token": token, "card": card})
            played_round = s["round"]
        time.sleep(0.5)

if __name__ == "__main__":
    main()