"""积分消耗规则单元测试 (#1895) — v1.6.2: 仅保留 voice_clone 相关"""

from __future__ import annotations

import math

import pytest

from packages.domain.points_rules import (
    FREE_USER_MULTIPLIER,
    MEMBER_DISCOUNT,
    MEMBERSHIP_PRICES,
    POINTS_PACKAGES,
    POINTS_SCENES,
    calculate_points_cost,
)


class TestPointsScenesConfig:
    """场景配置完整性"""

    def test_voice_clone_scenes_defined(self):
        # 仅保留声音克隆两个场景
        assert set(POINTS_SCENES.keys()) == {"voice_clone_train", "voice_clone_synth"}

    def test_required_keys_present(self):
        for key, scene in POINTS_SCENES.items():
            assert "base_points" in scene, f"{key} missing base_points"
            assert "unit" in scene, f"{key} missing unit"
            assert "name" in scene, f"{key} missing name"

    def test_voice_clone_train_is_free(self):
        assert POINTS_SCENES["voice_clone_train"]["base_points"] == 0

    def test_voice_clone_synth_is_per_minute(self):
        assert POINTS_SCENES["voice_clone_synth"]["base_points"] == 1
        assert POINTS_SCENES["voice_clone_synth"]["unit"] == "分钟"


class TestPointsPackages:
    def test_three_packages(self):
        assert len(POINTS_PACKAGES) == 3
        assert POINTS_PACKAGES["starter_pack"]["points"] == 100
        assert POINTS_PACKAGES["basic_pack"]["points"] == 500
        assert POINTS_PACKAGES["pro_pack"]["points"] == 2000


class TestMembershipPrices:
    def test_three_plans(self):
        assert len(MEMBERSHIP_PRICES) == 3
        assert MEMBERSHIP_PRICES["monthly"]["price_cents"] == 1990
        assert MEMBERSHIP_PRICES["quarterly"]["duration_days"] == 90
        assert MEMBERSHIP_PRICES["yearly"]["price_cents"] == 15900


class TestCalculatePointsCost:
    """核心计费逻辑"""

    # ── 声音克隆合成（按时长计费） ──

    def test_voice_clone_synth_base(self):
        cost = calculate_points_cost("voice_clone_synth", is_member=False, duration_minutes=3)
        assert cost == math.ceil(3 * FREE_USER_MULTIPLIER)

    def test_voice_clone_synth_rounds_up(self):
        cost = calculate_points_cost("voice_clone_synth", is_member=False, duration_minutes=2.3)
        assert cost == math.ceil(3 * FREE_USER_MULTIPLIER)

    def test_voice_clone_synth_minimum_1_minute(self):
        cost = calculate_points_cost("voice_clone_synth", is_member=False, duration_minutes=0.1)
        assert cost == math.ceil(1 * FREE_USER_MULTIPLIER)

    # ── 免费场景 ──

    def test_voice_clone_train_free(self):
        cost = calculate_points_cost("voice_clone_train", is_member=False)
        assert cost == 0

    def test_voice_clone_train_free_for_member(self):
        cost = calculate_points_cost("voice_clone_train", is_member=True)
        assert cost == 0

    # ── 会员折扣 ──

    def test_monthly_member_discount(self):
        cost = calculate_points_cost("voice_clone_synth", is_member=True, duration_minutes=1, member_type="monthly")
        assert cost == max(1, math.floor(1 * MEMBER_DISCOUNT["monthly"]))

    def test_yearly_member_deep_discount(self):
        cost = calculate_points_cost(
            "voice_clone_synth",
            is_member=True,
            duration_minutes=2,
            member_type="yearly",
        )
        assert cost == max(1, math.floor(2 * MEMBER_DISCOUNT["yearly"]))

    def test_member_without_type_no_discount(self):
        cost = calculate_points_cost("voice_clone_synth", is_member=True, duration_minutes=1)
        assert cost == 1

    # ── 已下线/未知场景（向后兼容：返回 0） ──

    @pytest.mark.parametrize(
        "scene",
        [
            "ai_voice",
            "ai_video",
            "ai_digital_human",
            "ai_rewrite",
            "ai_cover",
            "ai_title",
            "douyin_extract",
            "nonexistent",
        ],
    )
    def test_retired_scenes_return_zero(self, scene):
        assert calculate_points_cost(scene, is_member=False) == 0
        assert calculate_points_cost(scene, is_member=True, duration_minutes=10) == 0