From 47bc224d3e06aaa3220d5b8354794d9db7698f7a Mon Sep 17 00:00:00 2001
From: NIXIDE <dominik.pushkarev@gmail.com>
Date: Wed, 18 Sep 2024 01:34:28 +0300
Subject: [PATCH] fix: error handling

---
 cmd/itunes-cover-scraper/main.go | 62 ++++++++++++++++----------------
 pkg/itunes/itunes.go             |  8 ++++-
 2 files changed, 38 insertions(+), 32 deletions(-)

diff --git a/cmd/itunes-cover-scraper/main.go b/cmd/itunes-cover-scraper/main.go
index 67d25e8..2430821 100644
--- a/cmd/itunes-cover-scraper/main.go
+++ b/cmd/itunes-cover-scraper/main.go
@@ -28,44 +28,44 @@ func main() {
 	search, err := itunes.Search(query)
 	if err != nil {
 		fmt.Println("Search:", err)
-	}
-
-	if search.ResultCount > 0 {
-		rawUrl := search.Results[0].ArtworkUrl100
-		originalUrl := itunes.OriginalUrl(rawUrl)
+	} else {
+		if search.ResultCount > 0 {
+			rawUrl := search.Results[0].ArtworkUrl100
+			originalUrl := itunes.OriginalUrl(rawUrl)
 
-		var coverUrl string
-		if originalUrl != "" {
-			coverUrl = originalUrl
-		} else {
-			coverUrl = strings.Replace(rawUrl, "100x100bb.jpg", "3000x3000bb.jpg", 1)
-		}
+			var coverUrl string
+			if originalUrl != "" {
+				coverUrl = originalUrl
+			} else {
+				coverUrl = strings.Replace(rawUrl, "100x100bb.jpg", "3000x3000bb.jpg", 1)
+			}
 
-		fmt.Println("Downloading...")
-		err := DownloadFile(coverUrl, coverFilename)
-		if err != nil {
-			fmt.Println("Error downloading cover:", err)
-		}
+			fmt.Println("Downloading...")
+			err := DownloadFile(coverUrl, coverFilename)
+			if err != nil {
+				fmt.Println("Error downloading cover:", err)
+			}
 
-		fmt.Println("Removing metadata...")
-		data, err := os.ReadFile(coverFilename)
-		if err != nil {
-			fmt.Println("Error reading cover:", err)
-		}
+			fmt.Println("Removing metadata...")
+			data, err := os.ReadFile(coverFilename)
+			if err != nil {
+				fmt.Println("Error reading cover:", err)
+			}
 
-		filtered, err := StripExif(data)
-		if err != nil {
-			if !errors.Is(err, ErrExifMarkerNotFound) {
-				fmt.Println("Error removing EXIF metadata:", err)
+			filtered, err := StripExif(data)
+			if err != nil {
+				if !errors.Is(err, ErrExifMarkerNotFound) {
+					fmt.Println("Error removing EXIF metadata:", err)
+				}
+			} else {
+				if err := os.WriteFile(coverFilename, filtered, 0644); err != nil {
+					fmt.Println("Error saving cover file:", err)
+				}
 			}
+
 		} else {
-			if err := os.WriteFile(coverFilename, filtered, 0644); err != nil {
-				fmt.Println("Error saving cover file:", err)
-			}
+			fmt.Println("No results found")
 		}
-
-	} else {
-		fmt.Println("No results found")
 	}
 
 	fmt.Println("Press enter to exit")
diff --git a/pkg/itunes/itunes.go b/pkg/itunes/itunes.go
index f697734..62eef63 100644
--- a/pkg/itunes/itunes.go
+++ b/pkg/itunes/itunes.go
@@ -2,6 +2,7 @@ package itunes
 
 import (
 	"encoding/json"
+	"errors"
 	"fmt"
 	"io"
 	"net/http"
@@ -51,6 +52,10 @@ func PrepareQuery(query string) string {
 	return query
 }
 
+var (
+	ErrInvalidJsonp = errors.New("invalid jsonp")
+)
+
 func Search(query string) (*SearchResponse, error) {
 	endpoint := fmt.Sprintf(
 		"https://itunes.apple.com/search?callback=jQuery20309382196007363668_1726162953706&entity=song,album&media=music&entity=song&term=%s&country=nz&limit=1",
@@ -72,7 +77,8 @@ func Search(query string) (*SearchResponse, error) {
 	start := strings.Index(bodyStr, "(")
 	end := strings.LastIndex(bodyStr, ")")
 	if start == -1 || end == -1 || start >= end {
-		return nil, fmt.Errorf("jsonp parse error: %w", err)
+		fmt.Println(bodyStr)
+		return nil, ErrInvalidJsonp
 	}
 	jsonData := bodyStr[start+1 : end]