package tests

import (
	"testing"
	"time"

	"github.com/nkanaev/yarr/src/storage"
	"github.com/nkanaev/yarr/src/storage/model"
)

func TestUpdateFeedState_Full(t *testing.T) {
	dbtest(t, func(t *testing.T, s storage.Storage) {
		f := s.CreateFeed(model.CreateFeedParams{Title: "Test", FeedLink: "http://example.com"})

		now := time.Now().UTC().Truncate(time.Second)
		errMsg := "error"
		lmod := "today"
		etag := "v1"

		ok, err := s.UpdateFeedState(f.Id, model.UpdateFeedStateParams{
			LastRefreshed:    &now,
			LastError:        &errMsg,
			HTTPLastModified: &lmod,
			HTTPEtag:         &etag,
		})
		if err != nil {
			t.Fatal(err)
		}
		if !ok {
			t.Error("expected true")
		}

		state, err := s.GetFeedState(f.Id)
		if err != nil {
			t.Fatal(err)
		}
		if state == nil {
			t.Fatal("expected state, got nil")
		}
		if !state.LastRefreshed.Equal(now) {
			t.Errorf("expected %v, got %v", now, state.LastRefreshed)
		}
		if state.LastError != errMsg {
			t.Errorf("expected %s, got %v", errMsg, state.LastError)
		}
		if state.HTTPLastModified != lmod {
			t.Errorf("expected %s, got %s", lmod, state.HTTPLastModified)
		}
		if state.HTTPEtag != etag {
			t.Errorf("expected %s, got %s", etag, state.HTTPEtag)
		}
	})
}

func TestUpdateFeedState_Partial(t *testing.T) {
	dbtest(t, func(t *testing.T, s storage.Storage) {
		f := s.CreateFeed(model.CreateFeedParams{Title: "Test", FeedLink: "http://example.com"})
		etag := "v1"
		s.UpdateFeedState(f.Id, model.UpdateFeedStateParams{HTTPEtag: &etag})

		newErr := "new error"
		_, err := s.UpdateFeedState(f.Id, model.UpdateFeedStateParams{
			LastError: &newErr,
		})
		if err != nil {
			t.Fatal(err)
		}

		state, err := s.GetFeedState(f.Id)
		if err != nil {
			t.Fatal(err)
		}
		if state.LastError != newErr {
			t.Errorf("expected %s, got %v", newErr, state.LastError)
		}
		if state.HTTPEtag != etag {
			t.Errorf("etag should be unchanged, got %s", state.HTTPEtag)
		}
	})
}

func TestUpdateFeedState_ClearError(t *testing.T) {
	dbtest(t, func(t *testing.T, s storage.Storage) {
		f := s.CreateFeed(model.CreateFeedParams{Title: "Test", FeedLink: "http://example.com"})
		errMsg := "error"
		s.UpdateFeedState(f.Id, model.UpdateFeedStateParams{LastError: &errMsg})

		empty := ""
		_, err := s.UpdateFeedState(f.Id, model.UpdateFeedStateParams{
			LastError: &empty,
		})
		if err != nil {
			t.Fatal(err)
		}

		state, err := s.GetFeedState(f.Id)
		if err != nil {
			t.Fatal(err)
		}
		if state.LastError != "" {
			t.Errorf("expected empty error string, got %v", state.LastError)
		}
	})
}

func TestListFeedStates(t *testing.T) {
	dbtest(t, func(t *testing.T, s storage.Storage) {
		f1 := s.CreateFeed(model.CreateFeedParams{Title: "F1", FeedLink: "L1"})
		f2 := s.CreateFeed(model.CreateFeedParams{Title: "F2", FeedLink: "L2"})

		errMsg := "fail"
		s.UpdateFeedState(f1.Id, model.UpdateFeedStateParams{LastError: &errMsg})
		s.UpdateFeedState(f2.Id, model.UpdateFeedStateParams{HTTPEtag: ptr("e")})

		states, err := s.ListFeedStates()
		if err != nil {
			t.Fatal(err)
		}

		if len(states) != 2 {
			t.Errorf("expected 2 states, got %d", len(states))
		}
	})
}

func ptr[T any](v T) *T {
	return &v
}