"""积分消耗规则配置 (#1895)"""

from __future__ import annotations

import math

# ============ 场景定义 ============
# 每个场景: base_points(基础积分), unit(计费单位), name(显示名称)

POINTS_SCENES: dict[str, dict] = {
    "ai_voice": {
        "base_points": 1,
        "unit": "分钟",
        "name": "AI 配音",
        "description": "AI 配音每分钟消耗 1 积分（免费用户上浮 15%，会员 8~9 折）",
    },
    "ai_video": {
        "base_points": 3,
        "unit": "条",
        "name": "智能混剪",
        "extra_per_30s": 1,
        "description": "智能混剪每条 3 积分起，视频超过 30 秒后每 30 秒加 1 积分；免费用户每日 2 条免费额度",
    },
    "ai_digital_human": {
        "base_points": 15,
        "unit": "分钟",
        "name": "AI 数字人",
        "description": "AI 数字人每分钟消耗 15 积分",
    },
    "voice_clone_train": {
        "base_points": 0,
        "unit": "次",
        "name": "声音克隆训练",
        "description": "声音克隆训练免费（每用户限 1 个声音）",
    },
    "voice_clone_synth": {
        "base_points": 1,
        "unit": "分钟",
        "name": "声音克隆合成",
        "description": "克隆音色合成每分钟消耗 1 积分",
    },
    "douyin_extract": {
        "base_points": 1,
        "unit": "次",
        "name": "抖音链接提取",
        "description": "抖音文案提取每次 1 积分",
    },
    "ai_rewrite": {"base_points": 1, "unit": "次", "name": "AI 改写文案", "description": "AI 改写文案每次 1 积分"},
    "ai_title": {
        "base_points": 1,
        "unit": "次",
        "name": "AI 标题生成",
        "description": "AI 生成标题每次 1 积分（免费用户实际上浮后 2 积分/次）",
    },
    "ai_cover": {"base_points": 1, "unit": "张", "name": "AI 封面生成", "description": "AI 封面生成每张 1 积分"},
}

# 免费用户积分消耗上浮系数
FREE_USER_MULTIPLIER = 1.15

# ============ 积分包定义 ============

POINTS_PACKAGES: dict[str, dict] = {
    "starter_pack": {"name": "体验包", "points": 100, "price_cents": 990},
    "basic_pack": {"name": "基础包", "points": 500, "price_cents": 3900},
    "pro_pack": {"name": "专业包", "points": 2000, "price_cents": 12900},
}

# ============ 会员定价 ============

MEMBERSHIP_PRICES: dict[str, dict] = {
    "monthly": {"name": "月卡", "price_cents": 1990, "duration_days": 30},
    "quarterly": {"name": "季卡", "price_cents": 3990, "duration_days": 90},
    "yearly": {"name": "年卡", "price_cents": 15900, "duration_days": 365},
}

# 会员积分折扣（付费会员按此系数打折）
MEMBER_DISCOUNT: dict[str, float] = {
    "monthly": 0.9,
    "quarterly": 0.87,
    "yearly": 0.8,
}

# 每日免费混剪次数（免费用户）
DAILY_FREE_CLIP_LIMIT = 2


def calculate_points_cost(
    scene_key: str,
    is_member: bool,
    quantity: int = 1,
    duration_minutes: float = 0,
    member_type: str | None = None,
) -> int:
    """计算指定场景的积分消耗。

    Args:
        scene_key: 场景标识，如 "ai_voice"、"ai_video"
        is_member: 是否付费会员
        quantity: 数量（按次计费场景）
        duration_minutes: 时长分钟数（按时长计费场景）
        member_type: 会员类型 (monthly/quarterly/yearly)，用于折扣

    Returns:
        实际消耗积分（已含免费用户 ×1.15 上浮或会员折扣）

    Raises:
        ValueError: 未知场景标识
    """
    scene = POINTS_SCENES.get(scene_key)
    if not scene:
        raise ValueError(f"Unknown points scene: {scene_key}")

    base = scene["base_points"]
    if base == 0:
        return 0

    # —— 计算基础消耗 ——
    unit = scene["unit"]
    if unit == "分钟":
        total_base = base * max(1, math.ceil(duration_minutes))
    elif unit in ("条", "次", "张"):
        total_base = base * quantity
        # 混剪特殊逻辑：视频超过 30s 后每 +30s 额外加 1 积分
        if scene_key == "ai_video" and duration_minutes > 0.5:
            extra_segments = math.ceil((duration_minutes * 60 - 30) / 30)
            if extra_segments > 0:
                total_base += scene.get("extra_per_30s", 1) * extra_segments
    else:
        total_base = base

    # —— 会员折扣 / 免费用户上浮 ——
    if is_member and member_type and member_type in MEMBER_DISCOUNT:
        total_base = max(1, math.floor(total_base * MEMBER_DISCOUNT[member_type]))
    elif not is_member:
        total_base = math.ceil(total_base * FREE_USER_MULTIPLIER)

    return total_base