package api

import (
	"encoding/json"
	"net/http"
	"net/http/httptest"
	"os"
	"testing"

	"github.com/go-chi/chi/v5"

	"git.fabledsword.com/bvandeusen/minstrel/internal/auth"
)

func newForYouRefreshRouter(h *handlers) chi.Router {
	r := chi.NewRouter()
	r.Route("/api", func(api chi.Router) {
		api.Use(auth.RequireUser(h.pool))
		api.Post("/playlists/system/for-you/refresh", h.handleForYouRefresh)
	})
	return r
}

func TestForYouRefresh_AuthenticatedUser_Returns200(t *testing.T) {
	if os.Getenv("MINSTREL_TEST_DATABASE_URL") == "" {
		t.Skip("MINSTREL_TEST_DATABASE_URL not set")
	}
	h, pool := testHandlers(t)
	user := seedUser(t, pool, "foryourefresh", "pw", false)

	req := httptest.NewRequest(http.MethodPost, "/api/playlists/system/for-you/refresh", nil)
	req = withUser(req, user)
	rec := httptest.NewRecorder()
	newForYouRefreshRouter(h).ServeHTTP(rec, req)

	if rec.Code != http.StatusOK {
		t.Fatalf("status = %d, want 200; body=%s", rec.Code, rec.Body.String())
	}
	var resp foryouRefreshResp
	if err := json.Unmarshal(rec.Body.Bytes(), &resp); err != nil {
		t.Fatalf("decode: %v", err)
	}
	if resp.TrackIDs == nil {
		t.Errorf("track_ids = nil, want []string (empty array, not null)")
	}
	if int(resp.TrackCount) != len(resp.TrackIDs) {
		// Acceptable mismatch only when some tracks were removed from
		// the library between build and response. For a fresh test
		// user the counts should match.
		t.Errorf("track_count=%d, len(track_ids)=%d — mismatch", resp.TrackCount, len(resp.TrackIDs))
	}
}

func TestForYouRefresh_NoAuth_Returns401(t *testing.T) {
	if os.Getenv("MINSTREL_TEST_DATABASE_URL") == "" {
		t.Skip("MINSTREL_TEST_DATABASE_URL not set")
	}
	h, _ := testHandlers(t)

	req := httptest.NewRequest(http.MethodPost, "/api/playlists/system/for-you/refresh", nil)
	rec := httptest.NewRecorder()
	newForYouRefreshRouter(h).ServeHTTP(rec, req)

	if rec.Code != http.StatusUnauthorized {
		t.Errorf("status = %d, want 401", rec.Code)
	}
}