package httpapi_test

import (
	"fmt"
	"net/http"
	"testing"
)

// breakdownItems 读某单位的积分明细行。
func breakdownItems(t *testing.T, env *testEnv, client *http.Client, teamID int64) []map[string]any {
	t.Helper()
	status, env2 := env.do(client, http.MethodGet,
		fmt.Sprintf("/api/standings/teams/%d/breakdown", teamID), nil, false)
	if status != http.StatusOK || !env2.OK {
		t.Fatalf("读积分明细应 200，得到 %d %+v", status, env2.Error)
	}
	rows := decodeData[map[string]any](t, env2)["items"].([]any)
	out := make([]map[string]any, 0, len(rows))
	for _, row := range rows {
		item, ok := row.(map[string]any)
		if !ok {
			t.Fatalf("明细行不是对象: %+v", row)
		}
		out = append(out, item)
	}
	return out
}

// publishTrailResults 走真实的草稿 + 发布接口发布一批成绩（每次换一个 requestId，不走幂等缓存）。
func publishTrailResults(t *testing.T, env *testEnv, client *http.Client, eventID int64, tag string,
	rows ...map[string]any) {
	t.Helper()
	if status, env2 := env.do(client, http.MethodPut, "/api/results/draft", map[string]any{
		"eventId": eventID, "requestId": tag + "-draft", "results": rows,
	}, true); status != http.StatusOK {
		t.Fatalf("存草稿应 200，得到 %d %+v", status, env2.Error)
	}
	if status, env2 := env.do(client, http.MethodPost, "/api/results/publish",
		map[string]any{"eventId": eventID, "requestId": tag + "-publish"}, true); status != http.StatusOK {
		t.Fatalf("发布应 200，得到 %d %+v", status, env2.Error)
	}
}

// 「发布 → 裁判发现点错、退回草稿改一遍 → 重新发布」之后，明细要能说清这条成绩被改过、
// 最后一次因为什么改、什么时候 —— 现场观众看到的分要是解释得清的。
//
// 同时钉住「重新发布会产生新流水行」这件事：修订痕迹跟着 (小项, 报名项) 这条线走，
// 换了流水 id 照样追得到。
func TestBreakdownCarriesRevisionTrailAfterRepublish(t *testing.T) {
	env := newTestEnv(t)
	ids := env.seed(t)
	env.createUser("recorder", "recorder-pass", "recorder")
	client, _ := env.client()
	env.login(client, "recorder", "recorder-pass")

	publishTrailResults(t, env, client, ids.event, "trail-1",
		map[string]any{"entryId": ids.entryA, "resultValue": 11.58, "resultText": "11.58", "unit": "s", "status": "ok"})
	items := breakdownItems(t, env, client, ids.teamA)
	if len(items) != 1 {
		t.Fatalf("明细行数 = %d，期望 1", len(items))
	}
	firstLedger := items[0]["ledgerId"]
	if got := items[0]["revisionCount"]; got != float64(0) {
		t.Fatalf("刚发布、没人改过的成绩 revisionCount 应为 0，得到 %v", got)
	}
	if items[0]["lastRevisionAt"] != nil || items[0]["lastRevisionReason"] != nil {
		t.Fatalf("没改过的成绩不该有修订时间 / 原因: %+v", items[0])
	}

	// 裁判发现成绩录错：退回草稿（写理由）→ 改成正确值 → 重新发布。
	var resultID int64
	if err := env.ev.QueryRow(`SELECT id FROM results WHERE entry_id = ?`, ids.entryA).Scan(&resultID); err != nil {
		t.Fatalf("读成绩 id: %v", err)
	}
	if status, env2 := env.do(client, http.MethodPost, fmt.Sprintf("/api/results/%d/reopen", resultID),
		map[string]any{"reason": "成绩录入笔误"}, true); status != http.StatusOK {
		t.Fatalf("退回草稿应 200，得到 %d %+v", status, env2.Error)
	}
	publishTrailResults(t, env, client, ids.event, "trail-2",
		map[string]any{"entryId": ids.entryA, "resultValue": 11.42, "resultText": "11.42", "unit": "s",
			"status": "ok", "note": "成绩录入笔误"})

	items = breakdownItems(t, env, client, ids.teamA)
	if len(items) != 1 {
		t.Fatalf("明细行数 = %d，期望 1", len(items))
	}
	item := items[0]
	if item["ledgerId"] == firstLedger {
		t.Fatalf("重新发布应作废旧流水、写一条新流水（旧 id %v），得到 %v", firstLedger, item["ledgerId"])
	}
	if got := item["revisionCount"]; got != float64(1) {
		t.Fatalf("改过一次的成绩 revisionCount 应为 1，得到 %v（%+v）", got, item)
	}
	if got := item["lastRevisionReason"]; got != "成绩录入笔误" {
		t.Fatalf("最后一次修订原因 = %v，期望 成绩录入笔误", got)
	}
	if at, ok := item["lastRevisionAt"].(string); !ok || at == "" {
		t.Fatalf("最后一次修订时间应下发，得到 %v", item["lastRevisionAt"])
	}
	if got := item["lastRevisedBy"]; got != "recorder" {
		t.Fatalf("最后一次修订的操作人 = %v，期望 recorder", got)
	}

	// 未登录访客（大屏读的就是这个接口）拿得到「被改过、什么时候、为什么」，
	// 但拿不到「是谁点错的」—— 那是裁判自己看的账，与 /api/revisions 只对 recorder 开放同一口径。
	guest, _ := env.client()
	items = breakdownItems(t, env, guest, ids.teamA)
	if got := items[0]["revisionCount"]; got != float64(1) {
		t.Fatalf("访客也该看到修订次数，得到 %v", got)
	}
	if got := items[0]["lastRevisionReason"]; got != "成绩录入笔误" {
		t.Fatalf("访客也该看到修订原因，得到 %v", got)
	}
	if got := items[0]["lastRevisedBy"]; got != nil {
		t.Fatalf("访客不该拿到操作人姓名，得到 %v", got)
	}
}

// 一次都没改过的成绩不能标成「已修订」——这是最要防的误报。
//
// 两次发布之间引擎会重算名次、把 state / verified_at 重写一遍，同小项别人的成绩也在变；
// 这些都不该让一条没动过的成绩挂上角标。
func TestBreakdownKeepsUnchangedResultUnrevised(t *testing.T) {
	env := newTestEnv(t)
	ids := env.seed(t)
	env.createUser("recorder", "recorder-pass", "recorder")
	client, _ := env.client()
	env.login(client, "recorder", "recorder-pass")

	publishTrailResults(t, env, client, ids.event, "trail-1",
		map[string]any{"entryId": ids.entryA, "resultValue": 11.58, "resultText": "11.58", "unit": "s", "status": "ok"},
		map[string]any{"entryId": ids.entryB, "resultValue": 11.92, "resultText": "11.92", "unit": "s", "status": "ok"})
	// A 单位这条成绩一个字没改，只是把别人的成绩改了一次再发布（名次会跟着重算）。
	var resultID int64
	if err := env.ev.QueryRow(`SELECT id FROM results WHERE entry_id = ?`, ids.entryB).Scan(&resultID); err != nil {
		t.Fatalf("读成绩 id: %v", err)
	}
	if status, env2 := env.do(client, http.MethodPost, fmt.Sprintf("/api/results/%d/reopen", resultID),
		map[string]any{"reason": "计时有误"}, true); status != http.StatusOK {
		t.Fatalf("退回草稿应 200，得到 %d %+v", status, env2.Error)
	}
	publishTrailResults(t, env, client, ids.event, "trail-2",
		map[string]any{"entryId": ids.entryB, "resultValue": 11.60, "resultText": "11.60", "unit": "s", "status": "ok"})

	items := breakdownItems(t, env, client, ids.teamA)
	if len(items) != 1 {
		t.Fatalf("明细行数 = %d，期望 1", len(items))
	}
	for field, want := range map[string]any{
		"revisionCount":      float64(0),
		"lastRevisionAt":     nil,
		"lastRevisionReason": nil,
		"lastRevisedBy":      nil,
	} {
		if got := items[0][field]; got != want {
			t.Fatalf("没改过的成绩 %s 应为 %v，得到 %v（%+v）", field, want, got, items[0])
		}
	}
}

// 破纪录加分这张流水是站在成绩旁边的另一笔分：它不继承成绩的修订痕迹。
// 挂上去等于对外说「那笔加分被改过」，而现场改的是成绩 —— 那是误报。
func TestBreakdownRecordBonusDoesNotInheritTrail(t *testing.T) {
	env := newTestEnv(t)
	ids := env.seed(t)
	env.createUser("recorder", "recorder-pass", "recorder")
	client, _ := env.client()
	env.login(client, "recorder", "recorder-pass")

	publishTrailResults(t, env, client, ids.event, "trail-1",
		map[string]any{"entryId": ids.entryA, "resultValue": 11.58, "resultText": "11.58", "unit": "s", "status": "ok"})
	var resultID int64
	if err := env.ev.QueryRow(`SELECT id FROM results WHERE entry_id = ?`, ids.entryA).Scan(&resultID); err != nil {
		t.Fatalf("读成绩 id: %v", err)
	}
	if status, env2 := env.do(client, http.MethodPost, fmt.Sprintf("/api/results/%d/reopen", resultID),
		map[string]any{"reason": "成绩录入笔误"}, true); status != http.StatusOK {
		t.Fatalf("退回草稿应 200，得到 %d %+v", status, env2.Error)
	}
	publishTrailResults(t, env, client, ids.event, "trail-2",
		map[string]any{"entryId": ids.entryA, "resultValue": 11.42, "resultText": "11.42", "unit": "s", "status": "ok"})

	// 同一报名项再挂一条破纪录加分流水（与 writeLedgerTx 产出的形态一致：带 entry_id / result_id）。
	env.exec(t, `INSERT INTO score_ledger (team_id, athlete_id, event_id, entry_id, result_id,
	                                     source_type, source_id, points, count_to_team)
	              VALUES (?, ?, ?, ?, ?, 'record_bonus', 1, 3, 1)`,
		ids.teamA, ids.athleteA, ids.event, ids.entryA, resultID)

	items := breakdownItems(t, env, client, ids.teamA)
	if len(items) != 2 {
		t.Fatalf("明细行数 = %d，期望 2（成绩 + 破纪录加分）", len(items))
	}
	for _, item := range items {
		switch item["sourceType"] {
		case "result":
			if got := item["revisionCount"]; got != float64(1) {
				t.Fatalf("被改过的成绩应报 1 次修订，得到 %v（%+v）", got, item)
			}
		case "record_bonus":
			if got := item["revisionCount"]; got != nil {
				t.Fatalf("破纪录加分不继承成绩的修订痕迹，得到 %v（%+v）", got, item)
			}
		default:
			t.Fatalf("意外的来源类型: %+v", item)
		}
	}
}

// 聚合流水（按队内平均）与人工调整没有「一条成绩」可追：整组字段留空，不许猜一个数字出来。
func TestBreakdownAggregateAndAdjustmentHaveNoTrail(t *testing.T) {
	env := newTestEnv(t)
	ids := env.seed(t)
	env.createUser("recorder", "recorder-pass", "recorder")
	client, _ := env.client()
	env.login(client, "recorder", "recorder-pass")

	env.exec(t, `INSERT INTO score_ledger (team_id, athlete_id, event_id, entry_id, result_id,
	                                     source_type, source_id, points, count_to_team)
	              VALUES (?, NULL, ?, NULL, NULL, 'result', 99, 15, 1)`, ids.teamA, ids.event)
	env.exec(t, `INSERT INTO score_ledger (team_id, athlete_id, event_id, entry_id, result_id,
	                                     source_type, source_id, points, count_to_team)
	              VALUES (?, NULL, NULL, NULL, NULL, 'adjustment', 1, 5, 1)`, ids.teamA)

	items := breakdownItems(t, env, client, ids.teamA)
	if len(items) != 2 {
		t.Fatalf("明细行数 = %d，期望 2", len(items))
	}
	for _, item := range items {
		if got := item["revisionCount"]; got != nil {
			t.Fatalf("追不出来源的流水 revisionCount 应为 null，得到 %v（%+v）", got, item)
		}
	}
}