fix(indexer): panic on size check via api (#239)

* fix(indexer): panic on size check via api

* feat(indexer): add mock api

internal/mock/indexer_api.go

@@ -0,0 +1,46 @@
+package mock
+
+import (
+	"fmt"
+
+	"github.com/autobrr/autobrr/internal/domain"
+)
+
+type IndexerApiClient interface {
+	GetTorrentByID(torrentID string) (*domain.TorrentBasic, error)
+	TestAPI() (bool, error)
+}
+
+type IndexerClient struct {
+	URL    string
+	APIKey string
+}
+
+func NewMockClient(url string, apiKey string) IndexerApiClient {
+	c := &IndexerClient{
+		URL:    url,
+		APIKey: apiKey,
+	}
+
+	return c
+}
+
+func (c *IndexerClient) GetTorrentByID(torrentID string) (*domain.TorrentBasic, error) {
+	if torrentID == "" {
+		return nil, fmt.Errorf("mock client: must have torrentID")
+	}
+
+	r := &domain.TorrentBasic{
+		Id:       torrentID,
+		InfoHash: "",
+		Size:     "10GB",
+	}
+
+	return r, nil
+
+}
+
+// TestAPI try api access against torrents page
+func (c *IndexerClient) TestAPI() (bool, error) {
+	return true, nil
+}