package service

import (
	"testing"
	"time"

	"kefu-cloud/server/internal/model"
)

func TestNormalizeWelcomeSegments(t *testing.T) {
	SetImagePublicBase("http://localhost:9100/kefu")

	_, _, err := NormalizeWelcomeSegments(nil)
	if err == nil {
		t.Fatal("空列表应失败")
	}

	ok, first, err := NormalizeWelcomeSegments([]WelcomeSegment{
		{Type: "text", Content: "  你好  "},
		{Type: "image", Content: "http://localhost:9100/kefu/tenants/1/welcome/a.webp"},
		{Type: "text", Content: "请描述问题"},
	})
	if err != nil {
		t.Fatalf("合法多段应通过: %v", err)
	}
	if len(ok) != 3 || ok[0].Content != "你好" || first != "你好" {
		t.Fatalf("规范化结果异常: %+v first=%s", ok, first)
	}

	_, _, err = NormalizeWelcomeSegments([]WelcomeSegment{
		{Type: "image", Content: "https://evil.example/x.png"},
	})
	if err == nil {
		t.Fatal("非白名单图片 URL 应失败")
	}

	tooMany := make([]WelcomeSegment, MaxWelcomeSegments+1)
	for i := range tooMany {
		tooMany[i] = WelcomeSegment{Type: "text", Content: "x"}
	}
	if _, _, err := NormalizeWelcomeSegments(tooMany); err == nil {
		t.Fatal("超过段数上限应失败")
	}
}

func TestResolveWelcomeSegmentsCompat(t *testing.T) {
	// 仅有旧字段
	s1 := &model.TenantSetting{WelcomeMessage: "旧欢迎语"}
	segs := ResolveWelcomeSegments(s1)
	if len(segs) != 1 || segs[0].Type != "text" || segs[0].Content != "旧欢迎语" {
		t.Fatalf("旧字段兼容失败: %+v", segs)
	}

	// 优先 JSON
	s2 := &model.TenantSetting{
		WelcomeMessage:      "旧",
		WelcomeMessagesJSON: `[{"type":"text","content":"新1"},{"type":"image","content":"http://x/a.webp"}]`,
	}
	segs = ResolveWelcomeSegments(s2)
	if len(segs) != 2 || segs[0].Content != "新1" {
		t.Fatalf("JSON 优先失败: %+v", segs)
	}

	// 空 → 默认
	segs = ResolveWelcomeSegments(&model.TenantSetting{})
	if len(segs) != 1 || segs[0].Content != DefaultWelcomeMessage {
		t.Fatalf("默认欢迎语失败: %+v", segs)
	}
}

func TestNormalizeWorkHourSlot(t *testing.T) {
	cases := []struct {
		in      string
		want    string
		wantErr bool
	}{
		{"", "", false},
		{" 休息 ", "", false},
		{"全天", "全天", false},
		{"09:00-18:00", "09:00-18:00", false},
		{" 9:30 - 18:05 ", "09:30-18:05", false},
		{"22:00-06:00", "22:00-06:00", false},
		{"全天营业", "", true},
		{"09:00", "", true},
		{"25:00-26:00", "", true},
		{"09:00-18:00-extra", "", true},
	}
	for _, tc := range cases {
		got, err := NormalizeWorkHourSlot(tc.in)
		if tc.wantErr {
			if err == nil {
				t.Fatalf("NormalizeWorkHourSlot(%q) 期望错误，got=%q", tc.in, got)
			}
			continue
		}
		if err != nil {
			t.Fatalf("NormalizeWorkHourSlot(%q) 意外错误: %v", tc.in, err)
		}
		if got != tc.want {
			t.Fatalf("NormalizeWorkHourSlot(%q)=%q, want %q", tc.in, got, tc.want)
		}
	}
}

func TestSlotCoversLocal(t *testing.T) {
	loc, err := time.LoadLocation("Asia/Shanghai")
	if err != nil {
		t.Fatal(err)
	}
	// 2026-03-16 周一
	mk := func(h, m int) time.Time {
		return time.Date(2026, 3, 16, h, m, 0, 0, loc)
	}

	if !slotCoversLocal("全天", mk(3, 0), loc) {
		t.Fatal("全天应覆盖任意时刻")
	}
	if slotCoversLocal("", mk(10, 0), loc) {
		t.Fatal("空应视为休息")
	}
	if slotCoversLocal("休息", mk(10, 0), loc) {
		t.Fatal("休息应不覆盖")
	}
	// 09:00-18:00 半开区间 [start, end)
	if !slotCoversLocal("09:00-18:00", mk(9, 0), loc) {
		t.Fatal("09:00 应在工作时间内")
	}
	if !slotCoversLocal("09:00-18:00", mk(17, 59), loc) {
		t.Fatal("17:59 应在工作时间内")
	}
	if slotCoversLocal("09:00-18:00", mk(18, 0), loc) {
		t.Fatal("18:00 不应在工作时间内（半开）")
	}
	if slotCoversLocal("09:00-18:00", mk(8, 59), loc) {
		t.Fatal("08:59 不应在工作时间内")
	}
	// 跨午夜 22:00-06:00
	if !slotCoversLocal("22:00-06:00", mk(23, 0), loc) {
		t.Fatal("23:00 应在跨午夜时段内")
	}
	if !slotCoversLocal("22:00-06:00", mk(5, 0), loc) {
		t.Fatal("05:00 应在跨午夜时段内")
	}
	if slotCoversLocal("22:00-06:00", mk(12, 0), loc) {
		t.Fatal("12:00 不应在跨午夜时段内")
	}
}

func TestIsWithinWorkHoursCustomRange(t *testing.T) {
	setting := &model.TenantSetting{
		Timezone: "Asia/Shanghai",
		WorkHoursJSON: `{
			"monday":"09:30-12:00",
			"tuesday":"全天",
			"wednesday":"",
			"thursday":"22:00-06:00",
			"friday":"全天",
			"saturday":"休息",
			"sunday":""
		}`,
	}
	loc, _ := time.LoadLocation("Asia/Shanghai")

	// 周一 10:00 → 在 09:30-12:00
	mon := time.Date(2026, 3, 16, 10, 0, 0, 0, loc)
	if !IsWithinWorkHours(setting, mon) {
		t.Fatal("周一 10:00 应在自定义时段内")
	}
	// 周一 14:00 → 不在
	monPM := time.Date(2026, 3, 16, 14, 0, 0, 0, loc)
	if IsWithinWorkHours(setting, monPM) {
		t.Fatal("周一 14:00 不应在工作时间")
	}
	// 周三休息
	wed := time.Date(2026, 3, 18, 10, 0, 0, 0, loc)
	if IsWithinWorkHours(setting, wed) {
		t.Fatal("周三应休息")
	}
	// 周四跨午夜 23:00
	thu := time.Date(2026, 3, 19, 23, 0, 0, 0, loc)
	if !IsWithinWorkHours(setting, thu) {
		t.Fatal("周四 23:00 应在跨午夜时段")
	}
}