package deezer

import (
	"context"
	"encoding/hex"
	"encoding/json"
	"net/http"
	"net/http/httptest"
	"strings"
	"testing"

	"streamrip-go/internal/config"
)

func TestSearchTrack(t *testing.T) {
	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		if r.URL.Path == "/search/track" {
			_ = json.NewEncoder(w).Encode(map[string]any{"data": []any{map[string]any{"id": 1, "title": "Dreams", "artist": map[string]any{"name": "Fleetwood Mac"}}}})
			return
		}
		w.WriteHeader(http.StatusNotFound)
	}))
	defer ts.Close()

	cfgData := config.DefaultConfigData()
	c := New(&config.Config{File: cfgData, Session: cfgData})
	c.loggedIn = true

	origBase := baseURL
	baseURL = ts.URL
	defer func() { baseURL = origBase }()

	pages, err := c.Search(context.Background(), "track", "dreams", 5)
	if err != nil {
		t.Fatalf("Search() error = %v", err)
	}
	if len(pages) != 1 {
		t.Fatalf("pages len = %d, want 1", len(pages))
	}
}

func TestGetDownloadableNativeCipher(t *testing.T) {
	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		switch r.URL.Path {
		case "/track/42":
			_ = json.NewEncoder(w).Encode(map[string]any{"id": 42, "title": "X", "track_token": "tt"})
		case "/media":
			_ = json.NewEncoder(w).Encode(map[string]any{"data": []any{map[string]any{"errors": []any{}, "media": []any{map[string]any{"cipher": map[string]any{"type": "BF_CBC_STRIPE"}, "format": "FLAC", "sources": []any{map[string]any{"url": "https://cdn.example/file"}}}}}}})
		default:
			w.WriteHeader(http.StatusNotFound)
		}
	}))
	defer ts.Close()

	cfgData := config.DefaultConfigData()
	cfgData.Deezer.ARL = "arl"
	c := New(&config.Config{File: cfgData, Session: cfgData})
	c.loggedIn = true
	c.arl = "arl"
	c.license = "license"
	c.jwt = "jwt"

	origBase := baseURL
	origMedia := mediaURL
	origPipe := pipeURL
	baseURL = ts.URL
	mediaURL = ts.URL + "/media"
	pipeURL = ts.URL + "/pipe"
	defer func() {
		baseURL = origBase
		mediaURL = origMedia
		pipeURL = origPipe
	}()

	d, err := c.GetDownloadable(context.Background(), "42", 2)
	if err != nil {
		t.Fatalf("GetDownloadable() error = %v", err)
	}
	if d.Cipher != "BF_CBC_STRIPE" || d.Extension != "flac" || d.TrackID != "42" {
		t.Fatalf("unexpected downloadable: %+v", d)
	}
}

func TestGetDownloadableRequiresARL(t *testing.T) {
	cfgData := config.DefaultConfigData()
	cfgData.Deezer.ARL = ""
	c := New(&config.Config{File: cfgData, Session: cfgData})
	c.loggedIn = true
	_, err := c.GetDownloadable(context.Background(), "42", 2)
	if err == nil || !strings.Contains(strings.ToLower(err.Error()), "arl") {
		t.Fatalf("expected arl requirement error, got %v", err)
	}
}

func TestGetDownloadableDRMError(t *testing.T) {
	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		switch r.URL.Path {
		case "/track/42":
			_ = json.NewEncoder(w).Encode(map[string]any{"id": 42, "title": "X", "track_token": "tt"})
		case "/media":
			_ = json.NewEncoder(w).Encode(map[string]any{"data": []any{map[string]any{"errors": []any{map[string]any{"code": 403, "message": "DRM required"}}, "media": []any{}}}})
		default:
			w.WriteHeader(http.StatusNotFound)
		}
	}))
	defer ts.Close()

	cfgData := config.DefaultConfigData()
	cfgData.Deezer.ARL = "arl"
	c := New(&config.Config{File: cfgData, Session: cfgData})
	c.loggedIn = true
	c.arl = "arl"
	c.license = "license"
	c.jwt = "jwt"

	origBase := baseURL
	origMedia := mediaURL
	origPipe := pipeURL
	baseURL = ts.URL
	mediaURL = ts.URL + "/media"
	pipeURL = ts.URL + "/pipe"
	defer func() {
		baseURL = origBase
		mediaURL = origMedia
		pipeURL = origPipe
	}()

	_, err := c.GetDownloadable(context.Background(), "42", 2)
	if err == nil || !strings.Contains(strings.ToLower(err.Error()), "drm") {
		t.Fatalf("expected drm error, got %v", err)
	}
}

func TestGetMetadataAddsLyricsFromPipe(t *testing.T) {
	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		switch r.URL.Path {
		case "/track/1141668":
			_ = json.NewEncoder(w).Encode(map[string]any{"id": 1141668, "title": "In Da Club", "artist": map[string]any{"name": "50 Cent"}})
		case "/pipe":
			_ = json.NewEncoder(w).Encode(map[string]any{"data": map[string]any{"track": map[string]any{"lyrics": map[string]any{"text": "Go, go, go\nGo shawty", "synchronizedLines": []any{map[string]any{"line": "Go, go, go", "milliseconds": 0}, map[string]any{"line": "Go shawty", "milliseconds": 4280}}}}}})
		default:
			w.WriteHeader(http.StatusNotFound)
		}
	}))
	defer ts.Close()

	cfgData := config.DefaultConfigData()
	c := New(&config.Config{File: cfgData, Session: cfgData})
	c.loggedIn = true
	c.jwt = "jwt"

	origBase := baseURL
	origPipe := pipeURL
	baseURL = ts.URL
	pipeURL = ts.URL + "/pipe"
	defer func() {
		baseURL = origBase
		pipeURL = origPipe
	}()

	meta, err := c.GetMetadata(context.Background(), "1141668", "track")
	if err != nil {
		t.Fatalf("GetMetadata() error = %v", err)
	}
	if !strings.Contains(stringFromAny(meta["lyrics"]), "Go shawty") {
		t.Fatalf("expected lyrics text, got %q", stringFromAny(meta["lyrics"]))
	}
	if !strings.Contains(stringFromAny(meta["lyrics_synced"]), "[00:00.00]Go, go, go") {
		t.Fatalf("expected synced lyrics, got %q", stringFromAny(meta["lyrics_synced"]))
	}
}

func TestLoginWithCredentials(t *testing.T) {
	mobileToken := testMobileToken(t)
	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		if r.URL.Path != "/gateway" {
			w.WriteHeader(http.StatusNotFound)
			return
		}
		switch r.URL.Query().Get("method") {
		case "mobile_auth":
			_ = json.NewEncoder(w).Encode(map[string]any{"results": map[string]any{"TOKEN": mobileToken}})
		case "api_checkToken":
			_ = json.NewEncoder(w).Encode(map[string]any{"results": "sid123"})
		case "mobile_userAuth":
			var payload map[string]any
			_ = json.NewDecoder(r.Body).Decode(&payload)
			if strings.TrimSpace(stringFromAny(payload["mail"])) == "" || strings.TrimSpace(stringFromAny(payload["password"])) == "" {
				w.WriteHeader(http.StatusBadRequest)
				_ = json.NewEncoder(w).Encode(map[string]any{"error": map[string]any{"message": "missing creds"}})
				return
			}
			_ = json.NewEncoder(w).Encode(map[string]any{"results": map[string]any{"ARL": "arl-token", "JWT": "jwt-token", "refresh_token": "refresh-token", "license_token": "license-token", "USER_ID": "42"}})
		default:
			w.WriteHeader(http.StatusNotFound)
		}
	}))
	defer ts.Close()

	cfgData := config.DefaultConfigData()
	cfgData.Deezer.Email = "tidal1@alpin.sbs"
	cfgData.Deezer.Password = "tidal1@alpin.sbs"
	c := New(&config.Config{File: cfgData, Session: cfgData})

	origGateway := gatewayURL
	gatewayURL = ts.URL + "/gateway"
	defer func() { gatewayURL = origGateway }()

	if err := c.Login(context.Background()); err != nil {
		t.Fatalf("Login() error = %v", err)
	}
	if !c.loggedIn {
		t.Fatalf("expected logged in client")
	}
	if c.arl != "arl-token" {
		t.Fatalf("arl = %q, want arl-token", c.arl)
	}
	if c.jwt != "jwt-token" {
		t.Fatalf("jwt = %q, want jwt-token", c.jwt)
	}
	if c.refresh != "refresh-token" {
		t.Fatalf("refresh = %q, want refresh-token", c.refresh)
	}
	if c.license != "license-token" {
		t.Fatalf("license = %q, want license-token", c.license)
	}
	if c.cfg.Session.Deezer.RefreshToken != "refresh-token" {
		t.Fatalf("session refresh token = %q", c.cfg.Session.Deezer.RefreshToken)
	}
	if c.cfg.File.Deezer.RefreshToken != "refresh-token" {
		t.Fatalf("file refresh token = %q", c.cfg.File.Deezer.RefreshToken)
	}
}

func testMobileToken(t *testing.T) string {
	t.Helper()
	plain := []byte(strings.Repeat("A", 64) + strings.Repeat("B", 16) + strings.Repeat("C", 16))
	enc, err := aesECBEncrypt([]byte(gatewayDec), plain)
	if err != nil {
		t.Fatalf("aesECBEncrypt() error = %v", err)
	}
	return hex.EncodeToString(enc)
}

func TestLoginWithRefreshToken(t *testing.T) {
	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		switch r.URL.Path {
		case "/renew":
			_ = json.NewEncoder(w).Encode(map[string]any{"jwt": "jwt-token", "refresh_token": "refresh-token-2"})
		case "/pipe":
			_ = json.NewEncoder(w).Encode(map[string]any{"data": map[string]any{"tokens": map[string]any{"mediaServiceLicenseToken": map[string]any{"token": "license-token"}}}})
		default:
			w.WriteHeader(http.StatusNotFound)
		}
	}))
	defer ts.Close()

	cfgData := config.DefaultConfigData()
	cfgData.Deezer.RefreshToken = "refresh-token"
	c := New(&config.Config{File: cfgData, Session: cfgData})

	origAuth := authURL
	origPipe := pipeURL
	authURL = ts.URL + "/renew"
	pipeURL = ts.URL + "/pipe"
	defer func() {
		authURL = origAuth
		pipeURL = origPipe
	}()

	if err := c.Login(context.Background()); err != nil {
		t.Fatalf("Login() error = %v", err)
	}
	if !c.loggedIn {
		t.Fatalf("expected logged in client")
	}
	if c.jwt != "jwt-token" || c.license != "license-token" {
		t.Fatalf("unexpected jwt/license: jwt=%q license=%q", c.jwt, c.license)
	}
	if c.cfg.Session.Deezer.RefreshToken != "refresh-token-2" {
		t.Fatalf("session refresh token = %q", c.cfg.Session.Deezer.RefreshToken)
	}
}