package domain

import "testing"

// ---------- 通用构造 ----------

func ptr(f float64) *float64 { return &f }

func boolPtr(b bool) *bool { return &b }

// individualTop6 是规则包里的个人项目前六名：10/8/6/3/2/1。
func individualTop6() ScoringProfile {
	return ScoringProfile{
		ID: 1, Code: "individual_top6", Name: "个人项目前六名",
		AwardRanks: 6, LastPlaceZero: false, TieMode: TieSkip,
		Rules: []ScoringRule{{1, 10}, {2, 8}, {3, 6}, {4, 3}, {5, 2}, {6, 1}},
	}
}

// teamTop6 是规则包里的团体项目前六名：15/10/8/4/2/1。
func teamTop6() ScoringProfile {
	return ScoringProfile{
		ID: 2, Code: "team_top6", Name: "团体项目前六名",
		AwardRanks: 6, LastPlaceZero: false, TieMode: TieSkip,
		Rules: []ScoringRule{{1, 15}, {2, 10}, {3, 8}, {4, 4}, {5, 2}, {6, 1}},
	}
}

// nineProfile 是测试矩阵 case 1..6 使用的八名表：9/7/6/5/4/3/2/1。
func nineProfile(tie TieMode) ScoringProfile {
	return ScoringProfile{
		ID: 3, Code: "nine", Name: "八名表",
		AwardRanks: 8, LastPlaceZero: false, TieMode: tie,
		Rules: []ScoringRule{{1, 9}, {2, 7}, {3, 6}, {4, 5}, {5, 4}, {6, 3}, {7, 2}, {8, 1}},
	}
}

func testCategory() EventCategory {
	return EventCategory{ID: 1, EventID: 1, Name: "男子组", Multiplier: 1}
}

func individualEvent(multiplier float64) Event {
	return Event{
		ID: 1, Code: "E1", Name: "100米跑", EventType: EventTypeIndividual,
		Compare: CompareAsc, RecordEligible: true, Scored: true, AwardMedals: true,
		Multiplier: multiplier, Status: EventStatusPublished,
	}
}

func teamEvent(multiplier float64) Event {
	e := individualEvent(multiplier)
	e.EventType = EventTypeTeam
	e.Code = "E2"
	return e
}

func athleteResultChannel(profileID int64) ScoreChannel {
	return ScoreChannel{ID: 1, EventID: 1, Scope: ScopeAthlete, Basis: BasisResult, ProfileID: profileID}
}

func athleteManualChannel(profileID int64) ScoreChannel {
	return ScoreChannel{ID: 1, EventID: 1, Scope: ScopeAthlete, Basis: BasisManual, ProfileID: profileID}
}

func teamManualChannel(profileID int64) ScoreChannel {
	return ScoreChannel{ID: 2, EventID: 1, Scope: ScopeTeam, Basis: BasisManual, ProfileID: profileID}
}

func teamAggregateChannel(profileID int64) ScoreChannel {
	return ScoreChannel{ID: 3, EventID: 1, Scope: ScopeTeam, Basis: BasisAggregate, ProfileID: profileID}
}

// participant 是构造「报名项 + 成绩」的最小描述。
type participant struct {
	entryID     int64
	athleteID   int64
	teamID      int64
	name        string
	value       float64
	noValue     bool // true 表示这条成绩没有可比数值（如直接录名次的项目）
	rank        int
	status      ResultStatus
	entryStatus EntryStatus
	state       ResultState
}

func fixture(ps []participant) ([]Entry, []Result) {
	entries := make([]Entry, 0, len(ps))
	results := make([]Result, 0, len(ps))
	for _, p := range ps {
		entries = append(entries, Entry{
			ID: p.entryID, EventID: 1, CategoryID: 1, TeamID: p.teamID,
			AthleteID: p.athleteID, AthleteName: p.name,
			Status: p.entryStatus,
		})
		state := p.state
		if state == "" {
			state = ResultStatePublished
		}
		var value *float64
		if !p.noValue {
			value = ptr(p.value)
		}
		results = append(results, Result{
			ID: p.entryID * 100, EventID: 1, EntryID: p.entryID,
			Rank: p.rank, ResultValue: value, Status: p.status, State: state,
		})
	}
	return entries, results
}

// lineup 生成 n 个参赛者：成绩 1..n，entryID 1..n。
func lineup(n int) []participant {
	ps := make([]participant, 0, n)
	for i := 1; i <= n; i++ {
		ps = append(ps, participant{
			entryID: int64(i), athleteID: int64(100 + i), teamID: int64(1000 + i),
			name: "选手" + string(rune('A'+i-1)), value: float64(i),
		})
	}
	return ps
}

// lineupValues 生成 n 个参赛者并指定成绩值，用于构造并列。
func lineupValues(values ...float64) []participant {
	ps := make([]participant, 0, len(values))
	for i, v := range values {
		ps = append(ps, participant{
			entryID: int64(i + 1), athleteID: int64(100 + i + 1), teamID: int64(1000 + i + 1),
			name: "选手" + string(rune('A'+i)), value: v,
		})
	}
	return ps
}

func mustScore(t *testing.T, in EventScoreInput) EventScore {
	t.Helper()
	es, err := ScoreEvent(in)
	if err != nil {
		t.Fatalf("ScoreEvent 返回错误: %v", err)
	}
	return es
}

func pointsByEntry(ledger []LedgerEntry) map[int64]float64 {
	out := make(map[int64]float64)
	for _, e := range ledger {
		if e.Voided {
			continue
		}
		out[e.EntryID] += e.Points
	}
	return out
}

func rankByEntry(ranked []RankedResult) map[int64]int {
	out := make(map[int64]int, len(ranked))
	for _, r := range ranked {
		out[r.EntryID] = r.Rank
	}
	return out
}

func pointsByTeam(ledger []LedgerEntry) map[int64]float64 {
	out := make(map[int64]float64)
	for _, e := range ledger {
		if e.Voided {
			continue
		}
		out[e.TeamID] += e.Points
	}
	return out
}

// assertEntryPoints 断言 entryID 1..len(want) 的积分依次等于 want；缺键按 0 处理。
func assertEntryPoints(t *testing.T, got map[int64]float64, want []float64) {
	t.Helper()
	for i, w := range want {
		id := int64(i + 1)
		if !nearlyEqual(got[id], w) {
			t.Errorf("entry %d 积分 = %v，期望 %v", id, got[id], w)
		}
	}
}

func testTeams(ids ...int64) []Team {
	out := make([]Team, 0, len(ids))
	for i, id := range ids {
		out = append(out, Team{
			ID: id, Code: string(rune('A' + i)), Name: "单位" + string(rune('A'+i)), Active: true,
		})
	}
	return out
}

func ledgerFor(teamID int64, points float64) LedgerEntry {
	return LedgerEntry{TeamID: teamID, SourceType: SourceResult, SourceID: teamID, Points: points, CountToTeam: true}
}

func ledgerForAthlete(teamID, athleteID int64, points float64) LedgerEntry {
	return LedgerEntry{TeamID: teamID, AthleteID: athleteID, SourceType: SourceResult, SourceID: athleteID, Points: points, CountToTeam: true}
}

// ledgerForPersonal 是「不计入单位总分」的流水：只记在个人头上（如「个人+团体」项目的个人通道）。
func ledgerForPersonal(teamID, athleteID int64, points float64) LedgerEntry {
	e := ledgerForAthlete(teamID, athleteID, points)
	e.CountToTeam = false
	return e
}