"""荒謬商品拍賣會：使用虛擬幣，所有資料只留在本次執行。"""

PRODUCT = "永遠慢一天的作業提醒手錶"
BUDGET = 100
START = 10
STEP = 5
PLAYERS = ["甲", "乙", "丙"]
BOTS = [("模擬買家甲", 30), ("模擬買家乙", 45), ("模擬買家丙", 60)]


def ask_bid(name, minimum, sealed=False):
    if minimum > BUDGET:
        return 0
    while True:
        prompt = "秘密出價" if sealed else "出價"
        raw = input(f"{name}，{prompt} {minimum}～{BUDGET} 幣，0 放棄：").strip()
        try:
            bid = int(raw)
        except ValueError:
            print("請輸入整數。")
            continue
        if bid == 0 or minimum <= bid <= BUDGET:
            return bid
        print(f"出價需在 {minimum}～{BUDGET} 幣之間。")


def open_round(players, solo=False):
    """每次新出價都公開；全員一整輪沒有加價即開標。"""
    winner, price = "", 0
    while True:
        changed = False
        for name in players:
            if name == winner:
                continue
            minimum = price + STEP if winner else START
            bid = ask_bid(name, minimum)
            if bid:
                winner, price, changed = name, bid, True
                print(f"目前最高：{winner}｜{price} 幣")
            if solo:
                for bot, cap in BOTS:
                    minimum = price + STEP if winner else START
                    if bot != winner and minimum <= min(cap, BUDGET):
                        winner, price, changed = bot, minimum, True
                        print(f"{bot} 公開出價：{price} 幣")
        if not changed or price >= BUDGET:
            return winner, price


def sealed_round(players, solo=False):
    """每人一次；同價依收件順序。現場以紙條先寫好再輸入。"""
    offers = []
    print("先各自寫好出價，再由主持人輸入；開標前不要讓其他人看 Console。")
    for name in players:
        bid = ask_bid(name, START, sealed=True)
        if bid:
            offers.append((name, bid))
    if solo:
        offers.extend((name, cap) for name, cap in BOTS if START <= cap <= BUDGET)
    return max(offers, key=lambda offer: offer[1], default=("", 0))


def announce(result):
    winner, price = result
    if not winner:
        print("流標：沒有符合條件的出價。")
        return
    print(f"{winner} 得標｜成交 {price} 幣｜剩餘 {BUDGET - price} 幣")


def compare(sealed, opened):
    print("\n成交價比較（共同尺度：每格 5 幣，數字是實際價格）")
    for label, (winner, price) in [("秘密出價", sealed), ("公開出價", opened)]:
        print(f"{label}｜{'█' * (price // 5)} {price} 幣" if winner else f"{label}｜流標")
    print("想一想：看到別人出價時，你有改變原本的決定嗎？")


def main():
    if not 1 <= START <= BUDGET or STEP < 1:
        print("請設定 1 ≤ 起標價 ≤ 預算，最低加價至少 1 幣。")
        return
    print(f"\n荒謬商品拍賣會｜{PRODUCT}")
    print(f"每人 {BUDGET} 枚虛擬幣｜起標 {START}｜公開加價至少 {STEP} 幣")
    print("所有人都可以放棄。相同價格的秘密出價，以先收到的為準。")
    sealed = sealed_round(PLAYERS)
    announce(sealed)
    print("\n公開出價開始：每位買家的預算重新計算。")
    opened = open_round(PLAYERS)
    announce(opened)
    compare(sealed, opened)


if __name__ == "__main__":
    main()