package ui

import (
	"net/http"
	"net/http/httptest"
	"strings"
	"testing"
	"time"

	"github.com/gdamore/tcell/v2"

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

func TestTraktListsInTheSearchView(t *testing.T) {
	traktSrv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		w.Write([]byte(`[
			{"watchers":1234,"movie":{"title":"Dune","year":2021,"ids":{"trakt":1,"tmdb":438631}}},
			{"watchers":900,"movie":{"title":"Unknown To Radarr","year":2020,"ids":{"trakt":2,"tmdb":1}}},
			{"watchers":7,"movie":{"title":"No Ids","year":2019,"ids":{"trakt":3}}},
			{"watchers":5,"movie":{"title":"Heat","year":1995,"ids":{"trakt":4,"tmdb":949}}}]`))
	}))
	defer traktSrv.Close()
	radarrSrv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		switch r.URL.Query().Get("term") {
		case "tmdb:438631":
			w.Write([]byte(`[{"id":5,"title":"Dune","year":2021,"tmdbId":438631}]`))
		case "tmdb:949":
			w.Write([]byte(`[{"title":"Heat","year":1995,"tmdbId":949}]`))
		default:
			w.Write([]byte(`[]`))
		}
	}))
	defer radarrSrv.Close()

	a := newTestApp(t)
	v := a.searches[0]
	// Without a client ID the list says how to get one.
	v.activate()
	if !v.browsing || !strings.Contains(v.placeholder, "Trakt client ID") {
		t.Fatalf("unconfigured: browsing %v, placeholder %q", v.browsing, v.placeholder)
	}

	a.radarr.Reconfigure(radarrSrv.URL, "k")
	a.trakt.Reconfigure("id")
	a.trakt.SetBaseURL(traktSrv.URL)
	d := v.fetchList(v.lists[0])
	if d.err != nil || len(d.results) != 2 {
		t.Fatalf("fetched %d results, err %v", len(d.results), d.err)
	}
	// In the list's order; titles Radarr does not know, or without ids, are left out.
	if d.results[0].title() != "Dune" || d.results[1].title() != "Heat" || !d.results[0].inLibrary() || d.results[1].inLibrary() {
		t.Errorf("results %v %v", d.results[0].title(), d.results[1].title())
	}
	if strings.Join(d.notes, "|") != "1.2k watching|5 watching" {
		t.Errorf("notes %q", d.notes)
	}

	// A fresh list is shown from memory, with its numbers and its name in the title.
	v.discover[0] = d
	v.showList()
	if main, _ := v.list.GetItemText(0); !strings.Contains(main, "Dune") || !strings.Contains(main, "1.2k watching") {
		t.Errorf("first row %q", main)
	}
	if title := v.list.GetTitle(); !strings.Contains(title, "Trending now") {
		t.Errorf("title %q", title)
	}

	// ] and [ switch lists while browsing.
	v.discover[1] = &discovered{at: time.Now()}
	v.list.GetInputCapture()(tcell.NewEventKey(tcell.KeyRune, ']', 0))
	if v.listIdx != 1 || !strings.Contains(v.list.GetTitle(), "Most watched") || v.placeholder != "Nothing on this list right now." {
		t.Errorf("after ]: list %d, title %q, placeholder %q", v.listIdx, v.list.GetTitle(), v.placeholder)
	}
	v.list.GetInputCapture()(tcell.NewEventKey(tcell.KeyRune, '[', 0))
	// From the empty search box too (where the cursor is when the view opens).
	v.input.GetInputCapture()(tcell.NewEventKey(tcell.KeyRune, '[', 0))
	if v.listIdx != len(v.lists)-1 || v.input.GetText() != "" {
		t.Errorf("[ wraps around: list %d, search box %q", v.listIdx, v.input.GetText())
	}

	// Search results replace the list; their rows have no numbers.
	v.setResults(d.results)
	if v.browsing || v.notes != nil || strings.Contains(v.list.GetTitle(), "lists") {
		t.Errorf("search results: browsing %v, title %q", v.browsing, v.list.GetTitle())
	}
	if main, _ := v.list.GetItemText(0); strings.Contains(main, "watching") {
		t.Errorf("search row %q", main)
	}
}

func TestListNumbersAreRightAligned(t *testing.T) {
	sim := tcell.NewSimulationScreen("")
	if err := sim.Init(); err != nil {
		t.Fatal(err)
	}
	defer sim.Fini()
	sim.SetSize(60, 6)

	a := newTestApp(t)
	v := a.searches[0]
	a.trakt.Reconfigure("id")
	v.discover[0] = &discovered{at: time.Now(),
		results: []result{movieResult{Movie: radarr.Movie{Title: "Dune", Year: 2021}}, movieResult{Movie: radarr.Movie{Title: "A Much Longer Title", Year: 2024}}},
		notes:   []string{"1.2k watching", "5 watching"}}
	v.showList()

	ends := func(width int) []int {
		sim.Clear()
		l := notesList{v.list, v}
		l.SetRect(0, 0, width, 6)
		l.Draw(sim)
		var out []int
		for y := 1; y <= 2; y++ {
			row := strings.TrimRight(rowText(sim, y, 0, width), " │")
			out = append(out, len([]rune(row)))
			if !strings.HasSuffix(row, "watching") {
				t.Errorf("row %d does not end with its number: %q", y, row)
			}
		}
		return out
	}
	if e := ends(60); e[0] != e[1] {
		t.Errorf("numbers end in columns %v, want the same", e)
	}
	// After a resize they line up at the new edge.
	if e := ends(44); e[0] != e[1] || e[0] > 44 {
		t.Errorf("after resize: numbers end in columns %v", e)
	}
}