package httpapi_test

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

// importHeaderHeat 是带批次列的 12 列表头（与 ImportSection 模板一致）。
const importHeaderHeat = "event_code,category,team_code,athlete_name,id_card,gender,age,bib,seed,heat,status,member_names"

// 批量设置批次：成功写库、GET 下发、再传 null 清除；重复提交幂等。
func TestSetEntriesHeatSetsAndClears(t *testing.T) {
	env, ids, client := recorderWithSeed(t)

	status, env2 := env.do(client, http.MethodPut, "/api/entries/heat", map[string]any{
		"entryIds": []int64{ids.entryA, ids.entryB},
		"heat":     2,
	}, true)
	if status != http.StatusOK || !env2.OK {
		t.Fatalf("设置批次应 200，得到 %d %+v", status, env2.Error)
	}
	result := decodeData[map[string]any](t, env2)
	if result["updated"] != float64(2) || result["heat"] != float64(2) {
		t.Fatalf("批量设置结果不对: %+v", result)
	}

	var heat int
	if err := env.ev.QueryRow(`SELECT heat FROM entries WHERE id = ?`, ids.entryA).Scan(&heat); err != nil {
		t.Fatalf("读 entries.heat: %v", err)
	}
	if heat != 2 {
		t.Fatalf("entryA 的批次应为 2，得到 %d", heat)
	}

	// 下发路径也要带上 heat：录入页靠 GET /api/events/{id}/entries 拿批次。
	status, env2 = env.do(client, http.MethodGet, fmt.Sprintf("/api/events/%d/entries", ids.event), nil, false)
	if status != http.StatusOK || !env2.OK {
		t.Fatalf("读报名列表应 200，得到 %d %+v", status, env2.Error)
	}
	items := getEntryBoard(t, env, client, ids.event).Entries
	if len(items) != 2 {
		t.Fatalf("报名列表应有 2 条，得到 %d", len(items))
	}
	for _, item := range items {
		if item["heat"] != float64(2) {
			t.Fatalf("报名列表应下发 heat=2，得到 %+v", item["heat"])
		}
	}

	// 幂等：同一批再设一次批次号，结果一致。
	status, env2 = env.do(client, http.MethodPut, "/api/entries/heat", map[string]any{
		"entryIds": []int64{ids.entryA, ids.entryB},
		"heat":     2,
	}, true)
	if status != http.StatusOK || !env2.OK {
		t.Fatalf("重复设置同一批次应 200，得到 %d %+v", status, env2.Error)
	}
	if again := decodeData[map[string]any](t, env2); again["updated"] != float64(2) {
		t.Fatalf("重复设置应同样更新 2 条，得到 %+v", again)
	}

	// 传 null 清除为「未分批」。
	status, env2 = env.do(client, http.MethodPut, "/api/entries/heat", map[string]any{
		"entryIds": []int64{ids.entryA, ids.entryB},
		"heat":     nil,
	}, true)
	if status != http.StatusOK || !env2.OK {
		t.Fatalf("清除批次应 200，得到 %d %+v", status, env2.Error)
	}
	if cleared := decodeData[map[string]any](t, env2); cleared["heat"] != nil {
		t.Fatalf("清除后 heat 应为 null，得到 %+v", cleared["heat"])
	}
	var nullHeat any
	if err := env.ev.QueryRow(`SELECT heat FROM entries WHERE id = ?`, ids.entryA).Scan(&nullHeat); err != nil {
		t.Fatalf("读 entries.heat: %v", err)
	}
	if nullHeat != nil {
		t.Fatalf("清除后 entries.heat 应为 NULL，得到 %v", nullHeat)
	}
}

// 跨小项批量设置一定是选错行：必须拒绝，且一条都不能改。
func TestSetEntriesHeatRejectsCrossEvent(t *testing.T) {
	env, ids, client := recorderWithSeed(t)

	otherEvent := env.insert(t,
		`INSERT INTO events (sport_id, code, name, event_type, result_mode, result_type, compare, scored, multiplier, status)
		 VALUES (?, 'M200', '200米跑', 'individual', 'auto', 'time', 'asc', 1, 1, 'ongoing')`, ids.sport)
	otherCategory := env.insert(t,
		`INSERT INTO event_categories (event_id, name, multiplier, sort_order) VALUES (?, '男子', 1, 0)`, otherEvent)
	otherEntry := env.insert(t,
		`INSERT INTO entries (event_id, category_id, team_id, athlete_id, status) VALUES (?, ?, ?, ?, 'registered')`,
		otherEvent, otherCategory, ids.teamB, ids.athB)

	status, env2 := env.do(client, http.MethodPut, "/api/entries/heat", map[string]any{
		"entryIds": []int64{ids.entryA, otherEntry},
		"heat":     1,
	}, true)
	if status != http.StatusBadRequest {
		t.Fatalf("跨小项设置批次应 400，得到 %d %+v", status, env2.Error)
	}
	assertNoHeat(t, env, ids.entryA)
	assertNoHeat(t, env, otherEntry)
}

// entryIds 为空 / 全部非法、以及 heat 越界都必须被拒。
func TestSetEntriesHeatValidatesInput(t *testing.T) {
	env, ids, client := recorderWithSeed(t)

	cases := []struct {
		name string
		body map[string]any
	}{
		{"entryIds 为空", map[string]any{"entryIds": []int64{}, "heat": 1}},
		{"entryIds 缺失", map[string]any{"heat": 1}},
		{"entryIds 全是非法 id", map[string]any{"entryIds": []int64{0, -3}, "heat": 1}},
		{"heat 为 0", map[string]any{"entryIds": []int64{ids.entryA}, "heat": 0}},
		{"heat 为负", map[string]any{"entryIds": []int64{ids.entryA}, "heat": -1}},
		{"heat 超上限", map[string]any{"entryIds": []int64{ids.entryA}, "heat": 100000}},
		{"报名项不存在", map[string]any{"entryIds": []int64{ids.entryA, 999999}, "heat": 1}},
	}
	for _, tc := range cases {
		status, env2 := env.do(client, http.MethodPut, "/api/entries/heat", tc.body, true)
		if status != http.StatusBadRequest {
			t.Errorf("%s 应 400，得到 %d %+v", tc.name, status, env2.Error)
			continue
		}
		if env2.Error == nil || env2.Error.Code != "VALIDATION_FAILED" {
			t.Errorf("%s 应返回 VALIDATION_FAILED，得到 %+v", tc.name, env2.Error)
		}
	}
	assertNoHeat(t, env, ids.entryA)
}

// 权限：guest 未登录 401；recorder 放行；批次写操作进审计。
func TestSetEntriesHeatPermissionAndAudit(t *testing.T) {
	env, ids, _ := recorderWithSeed(t)

	guest, _ := env.client()
	status, env2 := env.do(guest, http.MethodPut, "/api/entries/heat", map[string]any{
		"entryIds": []int64{ids.entryA}, "heat": 1,
	}, false)
	if status != http.StatusUnauthorized || env2.Error == nil || env2.Error.Code != "AUTH_REQUIRED" {
		t.Fatalf("guest 设置批次应 401 AUTH_REQUIRED，得到 %d %+v", status, env2.Error)
	}
	assertNoHeat(t, env, ids.entryA)

	recorder, _ := env.client()
	env.login(recorder, "recorder", "recorder-pass")
	status, env2 = env.do(recorder, http.MethodPut, "/api/entries/heat", map[string]any{
		"entryIds": []int64{ids.entryA}, "heat": 3,
	}, true)
	if status != http.StatusOK || !env2.OK {
		t.Fatalf("recorder 设置批次应 200，得到 %d %+v", status, env2.Error)
	}

	var (
		action, after string
	)
	if err := env.ev.QueryRow(
		`SELECT action, after_json FROM audit_logs WHERE action = 'entry.heat' ORDER BY id DESC LIMIT 1`).
		Scan(&action, &after); err != nil {
		t.Fatalf("查批次审计: %v", err)
	}
	if !strings.Contains(after, `"heat":3`) {
		t.Fatalf("审计里应记下批次号 3，得到 %s", after)
	}
}

func assertNoHeat(t *testing.T, env *testEnv, entryID int64) {
	t.Helper()
	var heat any
	if err := env.ev.QueryRow(`SELECT heat FROM entries WHERE id = ?`, entryID).Scan(&heat); err != nil {
		t.Fatalf("读 entries.heat: %v", err)
	}
	if heat != nil {
		t.Fatalf("entry %d 的批次应保持未分批，得到 %v", entryID, heat)
	}
}

// 导入带 heat 列：正常值入库、留空 = 未分批、非法值走行级拦截且其余行照常导入。
func TestImportEntriesWithHeatColumn(t *testing.T) {
	env, _, client := recorderWithSeed(t)

	body := importHeaderHeat + "\n" +
		"M100,男子,A,张三,110101199001011234,男,,,,1,registered,\n" +
		"M100,男子,A,李强,110101199001011235,男,,,,2,registered,\n" +
		"M100,男子,B,王芳,110101199001011236,女,,,,3,registered,\n" +
		"M100,男子,A,赵六,110101199001011237,男,,,,abc,registered,\n" +
		"M100,男子,B,孙七,110101199001011238,男,,,,0,registered,\n"
	status, env2 := env.postImport(t, client, "/api/entries/import", body, "")
	if status != http.StatusOK || !env2.OK {
		t.Fatalf("导入应 200，得到 %d %+v", status, env2.Error)
	}
	result := decodeData[map[string]any](t, env2)
	if result["created"] != float64(3) || result["skipped"] != float64(2) {
		t.Fatalf("应新建 3 条、跳过 2 条，得到 %+v", result)
	}
	errs, _ := result["errors"].([]any)
	if len(errs) != 2 {
		t.Fatalf("应有 2 条行级错误，得到 %+v", errs)
	}
	for _, raw := range errs {
		text, _ := raw.(string)
		if !strings.Contains(text, "heat") {
			t.Errorf("行级错误应说明 heat 非法，得到 %q", text)
		}
	}

	// 正常值入库；heat 非法的两行被拦，不影响同一份表里的其余行。
	for idCard, want := range map[string]int64{
		"110101199001011234": 1,
		"110101199001011235": 2,
		"110101199001011236": 3,
	} {
		var heat int64
		if err := env.ev.QueryRow(
			`SELECT e.heat FROM entries e JOIN athletes a ON a.id = e.athlete_id WHERE a.id_card = ?`, idCard).
			Scan(&heat); err != nil {
			t.Fatalf("读 %s 的报名批次: %v", idCard, err)
		}
		if heat != want {
			t.Errorf("%s 的批次应为 %d，得到 %d", idCard, want, heat)
		}
	}
	// 非法值的两行没有落库。
	assertCount(t, env, `SELECT COUNT(*) FROM athletes WHERE id_card IN ('110101199001011237','110101199001011238')`, 0)
	// 表头没有 heat 列时（老模板）照常导入，批次为未分批。
	status, env2 = env.postImport(t, client, "/api/entries/import", importHeader+
		"\nM100,男子,A,周八,110101199001011239,男,,,,registered,\n", "")
	if status != http.StatusOK || !env2.OK {
		t.Fatalf("无 heat 列的老模板应照常导入，得到 %d %+v", status, env2.Error)
	}
	var heat any
	if err := env.ev.QueryRow(
		`SELECT e.heat FROM entries e JOIN athletes a ON a.id = e.athlete_id WHERE a.id_card = '110101199001011239'`).
		Scan(&heat); err != nil {
		t.Fatalf("读老模板导入的报名批次: %v", err)
	}
	if heat != nil {
		t.Fatalf("无 heat 列时应为未分批，得到 %v", heat)
	}
}

// 导入留空 = 未分批：显式带 heat 列但留空，写入 NULL。
func TestImportEntriesHeatBlankMeansUnbatched(t *testing.T) {
	env, _, client := recorderWithSeed(t)

	body := importHeaderHeat + "\nM100,男子,A,张三,110101199001011234,男,,,,,registered,\n"
	status, env2 := env.postImport(t, client, "/api/entries/import", body, "")
	if status != http.StatusOK || !env2.OK {
		t.Fatalf("导入应 200，得到 %d %+v", status, env2.Error)
	}
	if result := decodeData[map[string]any](t, env2); result["created"] != float64(1) {
		t.Fatalf("应新建 1 条，得到 %+v", result)
	}
	var heat any
	if err := env.ev.QueryRow(
		`SELECT e.heat FROM entries e JOIN athletes a ON a.id = e.athlete_id WHERE a.id_card = '110101199001011234'`).
		Scan(&heat); err != nil {
		t.Fatalf("读报名批次: %v", err)
	}
	if heat != nil {
		t.Fatalf("留空应为未分批（NULL），得到 %v", heat)
	}
}