package web

import (
	"testing"
	"time"

	"gitea.kazu634.com/kazu634/tver/internal/store"
)

func TestSortJobsNaturally(t *testing.T) {
	base := time.Date(2026, 10, 10, 0, 0, 0, 0, time.UTC)
	jobs := []store.Job{
		{ID: 8, Title: "第10話", FinishedAt: timePointer(base)},
		{ID: 7, Title: "第２話", FinishedAt: timePointer(base)},
		{ID: 6, Title: "#10", FinishedAt: timePointer(base)},
		{ID: 5, Title: "#9", FinishedAt: timePointer(base)},
		{ID: 4, Title: "第2話", FinishedAt: timePointer(base.Add(time.Hour))},
		{ID: 3, Title: "第２話", FinishedAt: timePointer(base.Add(-time.Hour))},
		{ID: 2, Title: "第02話", FinishedAt: timePointer(base.Add(-time.Hour))},
		{ID: 1, Title: "おまけ", FinishedAt: timePointer(base)},
	}
	sortJobsNaturally(jobs)
	got := make([]int64, len(jobs))
	for i := range jobs {
		got[i] = jobs[i].ID
	}
	want := []int64{5, 6, 1, 2, 3, 7, 4, 8}
	for i := range want {
		if got[i] != want[i] {
			t.Fatalf("自然順=%v want=%v", got, want)
		}
	}
}

func TestNaturalOrderUsesIDAfterEqualTitleAndFinishedAt(t *testing.T) {
	finished := time.Date(2026, 10, 10, 0, 0, 0, 0, time.UTC)
	jobs := []store.Job{
		{ID: 20, Title: "#９", FinishedAt: &finished},
		{ID: 10, Title: "#9", FinishedAt: &finished},
	}
	sortJobsNaturally(jobs)
	if jobs[0].ID != 10 || jobs[1].ID != 20 {
		t.Fatalf("同順位のID順: %+v", jobs)
	}
}

func TestNaturalOrderTreatsLeadingZerosAsTheSameNumber(t *testing.T) {
	base := time.Date(2026, 10, 10, 0, 0, 0, 0, time.UTC)
	jobs := []store.Job{
		{ID: 30, Title: "数字なし", FinishedAt: timePointer(base.Add(-time.Hour))},
		{ID: 20, Title: "#09", FinishedAt: timePointer(base)},
		{ID: 10, Title: "#9", FinishedAt: timePointer(base.Add(time.Hour))},
	}
	sortJobsNaturally(jobs)
	if jobs[0].ID != 20 || jobs[1].ID != 10 || jobs[2].ID != 30 {
		t.Fatalf("先頭ゼロと数字なしの自然順: %+v", jobs)
	}
}

func timePointer(value time.Time) *time.Time { return &value }