package playletcache

import "testing"

func TestListHomeThemesByRankRanksEligibleThemes(t *testing.T) {
	cache.lock.Lock()
	previous := cache.themeByID
	cache.themeByID = map[int64]*ThemeItem{}
	for id := int64(1); id <= 10; id++ {
		cache.themeByID[id] = &ThemeItem{Id: id, Rank: id, Status: true, PlayletCount: 1}
	}
	cache.themeByID[11] = &ThemeItem{Id: 11, Rank: 100, Status: false, IsRecommend: true, PlayletCount: 1}
	cache.themeByID[12] = &ThemeItem{Id: 12, Rank: 100, Status: true, PlayletCount: 0}
	cache.themeByID[13] = &ThemeItem{Id: 13, Rank: 100, Status: true, PlayletCount: 0}
	cache.lock.Unlock()
	t.Cleanup(func() {
		cache.lock.Lock()
		cache.themeByID = previous
		cache.lock.Unlock()
	})

	got := ListHomeThemesByRank(8)
	if len(got) != 8 {
		t.Fatalf("got %d themes, want 8", len(got))
	}
	for index, item := range got {
		want := int64(10 - index)
		if item.Id != want {
			t.Fatalf("item %d has id %d, want %d", index, item.Id, want)
		}
	}
}

func TestListHotSearchLimitsAndCopies(t *testing.T) {
	cache.lock.Lock()
	previous := cache.hotSearch
	cache.hotSearch = make([]HotSearchItem, 16)
	for index := range cache.hotSearch {
		cache.hotSearch[index] = HotSearchItem{Keyword: string(rune('A' + index)), Count: int64(16 - index)}
	}
	cache.lock.Unlock()
	t.Cleanup(func() {
		cache.lock.Lock()
		cache.hotSearch = previous
		cache.lock.Unlock()
	})

	home := ListHotSearch(15)
	if len(home) != 15 || home[0].Keyword != "A" || home[14].Keyword != "O" {
		t.Fatalf("home hot search = %+v, want first 15 terms", home)
	}
	if got := ListHotSearch(10); len(got) != 10 {
		t.Fatalf("hot-like has %d terms, want 10", len(got))
	}
	home[0].Keyword = "changed"
	if got := ListHotSearch(1)[0].Keyword; got != "A" {
		t.Fatalf("cache term changed to %q", got)
	}
}