package ui

import (
	"context"
	"net/http"
	"net/http/httptest"
	"sync/atomic"
	"testing"

	"git.stinnesbeck.com/nils/arr-tui/internal/radarr"
	"git.stinnesbeck.com/nils/arr-tui/internal/trakt"
)

func TestListLookupsKeptOnDisk(t *testing.T) {
	var lookups, libraryAsks atomic.Int32
	inLibrary := false
	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		switch r.URL.Path {
		case "/api/v3/movie":
			libraryAsks.Add(1)
			if inLibrary && r.URL.Query().Get("tmdbId") == "949" {
				w.Write([]byte(`[{"id":7,"title":"Heat","year":1995,"tmdbId":949}]`))
				return
			}
			w.Write([]byte(`[{"id":3,"title":"Other","tmdbId":1}]`)) // ignores the filter
		case "/api/v3/movie/lookup":
			lookups.Add(1)
			w.Write([]byte(`[{"title":"Heat","year":1995,"tmdbId":949,"overview":"Cops and robbers."}]`))
		}
	}))
	defer srv.Close()
	disk := &diskCache{dir: t.TempDir()}
	entry := trakt.Entry{Title: "Heat", IDs: trakt.IDs{TMDB: 949}}
	resolve := func() result {
		t.Helper()
		store := newLookupStore(disk) // a new run
		b := radarrBackend{radarr.NewClient(srv.URL, "k"), store}
		r, err := b.resolve(context.Background(), entry)
		if err != nil || r == nil {
			t.Fatalf("resolve: %v %v", r, err)
		}
		if err := store.save(); err != nil {
			t.Fatal(err)
		}
		return r
	}

	if r := resolve(); r.inLibrary() || lookups.Load() != 1 {
		t.Fatalf("first run: in library %v, %d lookups", r.inLibrary(), lookups.Load())
	}
	r := resolve()
	if lookups.Load() != 1 || r.details().plot != "Cops and robbers." {
		t.Errorf("second run: %d lookups, plot %q", lookups.Load(), r.details().plot)
	}
	// Added meanwhile (elsewhere): the library answer wins over the stored lookup.
	inLibrary = true
	if r := resolve(); !r.inLibrary() || lookups.Load() != 1 {
		t.Errorf("after adding: in library %v, %d lookups", r.inLibrary(), lookups.Load())
	}
	if libraryAsks.Load() != 3 {
		t.Errorf("library asked %d times", libraryAsks.Load())
	}
}