package domain

import "testing"

func bonusConfig(mode RecordBonusMode) RecordBonusConfig {
	return RecordBonusConfig{
		Enabled: true, Mode: mode,
		Levels: []RecordLevel{
			{Code: "meet", Name: "赛会纪录", Points: 2},
			{Code: "city", Name: "市级纪录", Points: 5},
			{Code: "province", Name: "省级纪录", Points: 8},
		},
	}
}

func TestRecordBonusDisabled(t *testing.T) {
	cfg := bonusConfig(RecordBonusMax)
	cfg.Enabled = false
	got := RecordBonusPoints(cfg, []RecordBreak{{EntryID: 1, Level: "meet", State: RecordBreakApproved}})
	if got != nil {
		t.Fatalf("未启用时 = %+v，期望 nil", got)
	}
}

func TestRecordBonusStateFilter(t *testing.T) {
	cases := []struct {
		name  string
		state RecordBreakState
		want  float64
	}{
		{"已通过计入", RecordBreakApproved, 2},
		{"待审核不计入", RecordBreakPending, 0},
		{"已驳回不计入", RecordBreakRejected, 0},
		{"状态空值不计入", "", 0},
	}
	for _, tc := range cases {
		t.Run(tc.name, func(t *testing.T) {
			got := RecordBonusPoints(bonusConfig(RecordBonusMax), []RecordBreak{{EntryID: 1, Level: "meet", State: tc.state}})
			if tc.want == 0 {
				if len(got) != 0 {
					t.Fatalf("结果 = %+v，期望空", got)
				}
				return
			}
			if len(got) != 1 || !nearlyEqual(got[0].Points, tc.want) {
				t.Fatalf("结果 = %+v，期望 %v 分", got, tc.want)
			}
		})
	}
}

func TestRecordBonusUnknownLevel(t *testing.T) {
	got := RecordBonusPoints(bonusConfig(RecordBonusMax), []RecordBreak{{EntryID: 1, Level: "galaxy", State: RecordBreakApproved}})
	if len(got) != 0 {
		t.Fatalf("未配置档位 = %+v，期望空（不能凭空加分）", got)
	}
}

func TestRecordBonusModes(t *testing.T) {
	breaks := []RecordBreak{
		{ID: 1, EntryID: 1, Level: "meet", State: RecordBreakApproved},
		{ID: 2, EntryID: 1, Level: "city", State: RecordBreakApproved},
		{ID: 3, EntryID: 1, Level: "province", State: RecordBreakApproved},
	}
	cases := []struct {
		name string
		mode RecordBonusMode
		want float64
	}{
		{"max 取最高档", RecordBonusMax, 8},
		{"sum 累加", RecordBonusSum, 15},
		{"模式空值按 max", "", 8},
	}
	for _, tc := range cases {
		t.Run(tc.name, func(t *testing.T) {
			got := RecordBonusPoints(bonusConfig(tc.mode), breaks)
			if len(got) != 1 || !nearlyEqual(got[0].Points, tc.want) {
				t.Fatalf("结果 = %+v，期望 %v", got, tc.want)
			}
		})
	}
}

func TestRecordBonusGroupsByEntry(t *testing.T) {
	breaks := []RecordBreak{
		{ID: 1, EntryID: 2, Level: "meet", State: RecordBreakApproved},
		{ID: 2, EntryID: 1, Level: "city", State: RecordBreakApproved},
		{ID: 3, EntryID: 1, Level: "meet", State: RecordBreakApproved},
	}
	got := RecordBonusPoints(bonusConfig(RecordBonusMax), breaks)
	if len(got) != 2 {
		t.Fatalf("条数 = %d，期望 2（按报名项分组）", len(got))
	}
	if got[0].EntryID != 1 || got[1].EntryID != 2 {
		t.Fatalf("顺序 = %+v，期望按 EntryID 升序", got)
	}
	if !nearlyEqual(got[0].Points, 5) || !nearlyEqual(got[1].Points, 2) {
		t.Fatalf("分值 = %v/%v，期望 5/2", got[0].Points, got[1].Points)
	}
}

func TestRecordBonusDedupLevel(t *testing.T) {
	breaks := []RecordBreak{
		{ID: 1, EntryID: 1, Level: "meet", State: RecordBreakApproved},
		{ID: 2, EntryID: 1, Level: "meet", State: RecordBreakApproved},
	}
	got := RecordBonusPoints(bonusConfig(RecordBonusSum), breaks)
	if len(got) != 1 || !nearlyEqual(got[0].Points, 2) {
		t.Fatalf("重复档位 = %+v，期望只计一次 2 分", got)
	}
	if len(got[0].Levels) != 1 {
		t.Fatalf("档位列表 = %v，期望去重", got[0].Levels)
	}
}

func TestRecordBonusNoBreaks(t *testing.T) {
	if got := RecordBonusPoints(bonusConfig(RecordBonusMax), nil); got != nil {
		t.Fatalf("无破纪录登记 = %+v，期望 nil", got)
	}
}

func TestRecordBonusLedger(t *testing.T) {
	entries, results := fixture(lineup(2))
	base := EventScoreInput{
		Event: individualEvent(1), Category: testCategory(),
		Channels: []ScoreChannel{athleteResultChannel(1)},
		Profiles: map[int64]ScoringProfile{1: individualTop6()},
		Entries:  entries, Results: results,
		RecordBreaks: []RecordBreak{{
			ID: 1, EventID: 1, EntryID: 1, AthleteID: 101, TeamID: 1001,
			Level: "meet", State: RecordBreakApproved,
		}},
	}

	t.Run("未启用不产生加分流水", func(t *testing.T) {
		cfg := bonusConfig(RecordBonusMax)
		cfg.Enabled = false
		base.RecordBonus = &cfg
		es := mustScore(t, base)
		for _, e := range es.Ledger {
			if e.SourceType == SourceRecordBonus {
				t.Fatalf("不应有加分流水: %+v", e)
			}
		}
	})

	t.Run("启用后归属到人", func(t *testing.T) {
		cfg := bonusConfig(RecordBonusMax)
		base.RecordBonus = &cfg
		es := mustScore(t, base)
		var found bool
		for _, e := range es.Ledger {
			if e.SourceType != SourceRecordBonus {
				continue
			}
			found = true
			if e.TeamID != 1001 || e.AthleteID != 101 || !nearlyEqual(e.Points, 2) {
				t.Fatalf("加分流水 = %+v，期望 1001/101 记 2 分", e)
			}
		}
		if !found {
			t.Fatal("未产生加分流水")
		}
	})

	t.Run("联队按份额拆分加分", func(t *testing.T) {
		ps := []participant{{
			entryID: 1, athleteID: 101, teamID: 1001, value: 1,
			shares: []TeamShare{{TeamID: 1001, Weight: 3}, {TeamID: 1002, Weight: 2}},
		}}
		e2, r2 := fixture(ps)
		cfg := bonusConfig(RecordBonusMax)
		es := mustScore(t, EventScoreInput{
			Event: individualEvent(1), Category: testCategory(),
			Channels: []ScoreChannel{athleteResultChannel(1)},
			Profiles: map[int64]ScoringProfile{1: individualTop6()},
			Entries:  e2, Results: r2,
			RecordBonus: &cfg,
			RecordBreaks: []RecordBreak{{
				ID: 1, EventID: 1, EntryID: 1, AthleteID: 101, TeamID: 1001,
				Level: "meet", State: RecordBreakApproved,
			}},
			Options: ScoreOptions{UnionAttribution: UnionSplit},
		})
		var bonus float64
		for _, e := range es.Ledger {
			if e.SourceType == SourceRecordBonus && e.TeamID == 1002 {
				bonus += e.Points
			}
		}
		if !nearlyEqual(bonus, 0.8) {
			t.Fatalf("单位1002 的加分 = %v，期望 2 × 0.4 = 0.8", bonus)
		}
	})
}

// TestRecordBonusLedgerFiltersByCategory 验证按「小项+组别」过滤：
// 上层逐组别调用 ScoreEvent，别的组别的破纪录登记不能在本组别重复记一次加分。
func TestRecordBonusLedgerFiltersByCategory(t *testing.T) {
	entries, results := fixture(lineup(2))
	entries[1].CategoryID = 2 // entry2 属于另一个组别
	cfg := bonusConfig(RecordBonusMax)
	es := mustScore(t, EventScoreInput{
		Event: individualEvent(1), Category: testCategory(),
		Channels: []ScoreChannel{athleteResultChannel(1)},
		Profiles: map[int64]ScoringProfile{1: individualTop6()},
		Entries:  entries, Results: results,
		RecordBonus: &cfg,
		RecordBreaks: []RecordBreak{
			{ID: 1, EventID: 1, EntryID: 1, AthleteID: 101, TeamID: 1001, Level: "meet", State: RecordBreakApproved},
			{ID: 2, EventID: 1, EntryID: 2, AthleteID: 102, TeamID: 1002, Level: "meet", State: RecordBreakApproved},
		},
	})

	var thisCategory, otherCategory int
	for _, e := range es.Ledger {
		if e.SourceType != SourceRecordBonus {
			continue
		}
		switch e.EntryID {
		case 1:
			thisCategory++
		case 2:
			otherCategory++
		}
	}
	if thisCategory != 1 {
		t.Fatalf("本组别加分流水 = %d 条，期望 1", thisCategory)
	}
	if otherCategory != 0 {
		t.Fatalf("别的组别的加分不应记入本组别，实际 %d 条", otherCategory)
	}
}