package httpapi_test

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

// changeLogCount 统计某实体某动作的变更记录数。
func changeLogCount(t *testing.T, env *testEnv, entity, action string) int {
	t.Helper()
	var n int
	if err := env.ev.QueryRow(`SELECT COUNT(*) FROM change_log WHERE entity_type = ? AND action = ?`,
		entity, action).Scan(&n); err != nil {
		t.Fatalf("统计 change_log: %v", err)
	}
	return n
}

// 配置写操作必须写 change_log，否则 broadcastChanges 推空、大屏不刷新；
// 同时校验数值范围，浏览器 min/max 只是提示，不能当服务端校验。
func TestSettingsPatchValidationAndChangeLog(t *testing.T) {
	env := newTestEnv(t)
	env.createUser("admin", "admin-pass", "admin")
	client, _ := env.client()
	env.login(client, "admin", "admin-pass")

	for _, tc := range []struct {
		name string
		body map[string]any
	}{
		{"轮播间隔过小", map[string]any{"display": map[string]any{"rotateSeconds": 1}}},
		{"轮播间隔过大", map[string]any{"display": map[string]any{"rotateSeconds": 121}}},
		{"折算系数为 0", map[string]any{"standings": map[string]any{"individualToTeamWeight": 0}}},
		{"折算系数为负", map[string]any{"standings": map[string]any{"individualToTeamWeight": -1}}},
	} {
		status, env2 := env.do(client, http.MethodPut, "/api/settings", tc.body, true)
		if status != http.StatusBadRequest || env2.Error == nil || env2.Error.Code != "VALIDATION_FAILED" {
			t.Fatalf("%s应 400 VALIDATION_FAILED，得到 %d %+v", tc.name, status, env2.Error)
		}
	}

	before := changeLogCount(t, env, "settings", "upsert")
	status, env2 := env.do(client, http.MethodPut, "/api/settings", map[string]any{
		"event":     map[string]any{"name": "秋季运动会", "subtitle": ""},
		"display":   map[string]any{"rotateSeconds": 30},
		"standings": map[string]any{"individualToTeamWeight": 0.5},
	}, true)
	if status != http.StatusOK || !env2.OK {
		t.Fatalf("合法配置应 200，得到 %d %+v", status, env2.Error)
	}
	if got := changeLogCount(t, env, "settings", "upsert"); got != before+1 {
		t.Fatalf("配置写操作应新增 1 条 settings change_log，得到 %d → %d", before, got)
	}

	_, env2 = env.do(client, http.MethodGet, "/api/settings", nil, false)
	settings := decodeData[map[string]any](t, env2)
	event := settings["event"].(map[string]any)
	if event["name"] != "秋季运动会" || event["subtitle"] != nil {
		t.Fatalf("空串应归一为 null、名称应落库: %+v", event)
	}
	display := settings["display"].(map[string]any)
	if display["rotateSeconds"].(float64) != 30 {
		t.Fatalf("轮播间隔应落库为 30: %+v", display)
	}
}

// 破纪录登记必须基于该项目一条已发布且状态正常的成绩，否则 recorder 可凭空加分。
func TestRecordBreakRequiresPublishedResult(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")

	body := map[string]any{"eventId": ids.event, "entryId": ids.entryA, "level": "meet",
		"resultValue": 10.5, "resultText": "10.50"}

	// 没有成绩。
	status, env2 := env.do(client, http.MethodPost, "/api/record-breaks", body, true)
	if status != http.StatusBadRequest {
		t.Fatalf("无成绩时登记破纪录应 400，得到 %d %+v", status, env2.Error)
	}

	// 只有草稿成绩。
	env.exec(t, `INSERT INTO results (event_id, entry_id, rank, result_value, status, state)
	              VALUES (?, ?, 1, 10.5, 'ok', 'draft')`, ids.event, ids.entryA)
	status, env2 = env.do(client, http.MethodPost, "/api/record-breaks", body, true)
	if status != http.StatusBadRequest {
		t.Fatalf("草稿成绩登记破纪录应 400，得到 %d %+v", status, env2.Error)
	}

	// 已发布但小项不可破纪录。
	env.exec(t, `UPDATE results SET state = 'published' WHERE entry_id = ?`, ids.entryA)
	env.exec(t, `UPDATE events SET record_eligible = 0 WHERE id = ?`, ids.event)
	status, env2 = env.do(client, http.MethodPost, "/api/record-breaks", body, true)
	if status != http.StatusBadRequest {
		t.Fatalf("不可破纪录项目应 400，得到 %d %+v", status, env2.Error)
	}

	// 报名项不属于该项目。
	env.exec(t, `UPDATE events SET record_eligible = 1 WHERE id = ?`, ids.event)
	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)
	status, env2 = env.do(client, http.MethodPost, "/api/record-breaks",
		map[string]any{"eventId": otherEvent, "entryId": ids.entryA, "level": "meet",
			"resultValue": 10.5, "resultText": "10.50"}, true)
	if status != http.StatusBadRequest {
		t.Fatalf("跨项目登记破纪录应 400，得到 %d %+v", status, env2.Error)
	}

	// 合法：已发布成绩 + 可破纪录项目。
	status, env2 = env.do(client, http.MethodPost, "/api/record-breaks", body, true)
	if status != http.StatusOK || !env2.OK {
		t.Fatalf("合法登记应 200，得到 %d %+v", status, env2.Error)
	}
}

// 单位积分明细的合计必须与总积分榜同口径：个人流水乘折算系数。
func TestTeamBreakdownAppliesIndividualWeight(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.do(client, http.MethodPut, "/api/results/draft", map[string]any{
		"eventId": ids.event,
		"results": []map[string]any{
			{"entryId": ids.entryA, "resultValue": 11.58, "unit": "s", "status": "ok"},
			{"entryId": ids.entryB, "resultValue": 11.92, "unit": "s", "status": "ok"},
		},
	}, true)
	if status, env2 := env.do(client, http.MethodPost, "/api/results/publish", map[string]any{
		"eventId": ids.event,
	}, true); status != http.StatusOK {
		t.Fatalf("发布应 200，得到 %d %+v", status, env2.Error)
	}
	env.exec(t, `UPDATE settings SET value = '0.5' WHERE key = 'standings.individual_to_team_weight'`)

	status, env2 := env.do(client, http.MethodGet,
		fmt.Sprintf("/api/standings/teams/%d/breakdown", ids.teamA), nil, false)
	if status != http.StatusOK || !env2.OK {
		t.Fatalf("读积分明细应 200，得到 %d %+v", status, env2.Error)
	}
	breakdown := decodeData[map[string]any](t, env2)
	if got := breakdown["totalPoints"].(float64); got != 5 {
		t.Fatalf("合计应按系数折算为 5，得到 %v", got)
	}
	items := breakdown["items"].([]any)
	if len(items) != 1 || items[0].(map[string]any)["points"].(float64) != 5 {
		t.Fatalf("明细行也应按系数折算: %+v", items)
	}

	// 与总积分榜一致。
	_, env2 = env.do(client, http.MethodGet, "/api/standings", nil, false)
	for _, row := range decodeData[[]map[string]any](t, env2) {
		if row["teamCode"] == "A" && row["totalPoints"].(float64) != 5 {
			t.Fatalf("总积分榜与明细合计应一致: %+v", row)
		}
	}
}

// standings.tie_break 必须真正参与排序，否则换规则包后名次仍走硬编码默认序。
func TestStandingsTieBreakFromSettings(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")

	// 让单位编码顺序与名称顺序相反，且两队同分同奖牌。
	env.exec(t, `UPDATE teams SET name = 'zzz' WHERE id = ?`, ids.teamA)
	env.exec(t, `UPDATE teams SET name = 'aaa' WHERE id = ?`, ids.teamB)

	env.do(client, http.MethodPut, "/api/results/draft", map[string]any{
		"eventId": ids.event,
		"results": []map[string]any{
			{"entryId": ids.entryA, "resultValue": 11.58, "unit": "s", "status": "ok"},
			{"entryId": ids.entryB, "resultValue": 11.58, "unit": "s", "status": "ok"},
		},
	}, true)
	if status, env2 := env.do(client, http.MethodPost, "/api/results/publish", map[string]any{
		"eventId": ids.event,
	}, true); status != http.StatusOK {
		t.Fatalf("发布应 200，得到 %d %+v", status, env2.Error)
	}

	first := func() string {
		t.Helper()
		_, env2 := env.do(client, http.MethodGet, "/api/standings", nil, false)
		rows := decodeData[[]map[string]any](t, env2)
		if len(rows) != 2 {
			t.Fatalf("应返回 2 个单位，得到 %d", len(rows))
		}
		return rows[0]["teamCode"].(string)
	}

	if got := first(); got != "A" {
		t.Fatalf("默认按单位编码排序应 A 在前，得到 %s", got)
	}
	env.exec(t, `INSERT INTO settings (key, value, updated_at) VALUES ('standings.tie_break', 'points,name', datetime('now'))
	              ON CONFLICT(key) DO UPDATE SET value = excluded.value`)
	if got := first(); got != "B" {
		t.Fatalf("配置 standings.tie_break=points,name 后应按名称排序（aaa 在前），得到 %s", got)
	}
}