package gpaste_test

import (
	"bytes"
	"io"
	"testing"

	"git.t-juice.club/torjus/gpaste"
	"github.com/google/uuid"
)

func RunFilestoreTest(s gpaste.FileStore, t *testing.T) {
	t.Run("Basic", func(t *testing.T) {
		// Create
		dataString := "TEST_LOL_OMG"
		id := uuid.Must(uuid.NewRandom()).String()
		bodyBuf := &bytes.Buffer{}
		bodyBuf.Write([]byte(dataString))
		body := io.NopCloser(bodyBuf)
		f := &gpaste.File{
			ID:       id,
			MaxViews: 0,
			Body:     body,
		}

		err := s.Store(f)
		if err != nil {
			t.Fatalf("Unable to store file: %s", err)
		}

		// Retrieve
		retrieved, err := s.Get(id)
		if err != nil {
			t.Fatalf("Unable to retrieve file: %s", err)
		}

		retrievedBuf := &bytes.Buffer{}
		_, err = retrievedBuf.ReadFrom(retrieved.Body)
		if err != nil {
			t.Fatalf("Unable to read retrieved body: %s", err)
		}
		_ = retrieved.Body.Close()
		if err != nil {
			t.Fatalf("Error reading from retrieved file: %s", err)
		}

		if retrievedBuf.String() != dataString {
			t.Fatalf("Data from retrieved body mismatch. Got %s want %s", retrievedBuf.String(), dataString)
		}

		// List
		ids, err := s.List()
		if err != nil {
			t.Fatalf("Error doing list: %s", err)
		}
		if len(ids) != 1 {
			t.Fatalf("List has wrong length: %d", len(ids))
		}
		if ids[0] != id {
			t.Fatalf("ID is wrong. Got %s want %s", ids[0], id)
		}

		// Delete
		if err := s.Delete(id); err != nil {
			t.Fatalf("Error deleting file: %s", err)
		}

		ids, err = s.List()
		if err != nil {
			t.Fatalf("Error listing after delete: %s", err)
		}
		if len(ids) != 0 {
			t.Fatalf("List after delete has wrong length: %d", len(ids))
		}
	})
}