package handler

import (
	"testing"
	"time"

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

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")
	}
}