Fixed errcheck linter complaints

.drone.yml

@@ -14,7 +14,7 @@ steps:
   - pack
   - go build -v
   - curl -sfL https://install.goreleaser.com/github.com/golangci/golangci-lint.sh | sh -s -- -b $(go env GOPATH)/bin v1.16.0
-  - golangci-lint run --disable errcheck
+  - golangci-lint run
   - go test -v -coverprofile=coverage.txt .
   # - go mod download
   # - make tools

arn/Anime.go

@@ -400,7 +400,7 @@ func (anime *Anime) RefreshEpisodes() error {
 	shoboiEpisodes, err := anime.ShoboiEpisodes()
 
 	if err != nil {
-		color.Red(err.Error())
+		return err
 	}
 
 	episodes.Merge(shoboiEpisodes)
@@ -409,7 +409,7 @@ func (anime *Anime) RefreshEpisodes() error {
 	twistEpisodes, err := anime.TwistEpisodes()
 
 	if err != nil {
-		color.Red(err.Error())
+		return err
 	}
 
 	episodes.Merge(twistEpisodes)
@@ -485,7 +485,6 @@ func (anime *Anime) RefreshEpisodes() error {
 	}
 
 	episodes.Save()
-
 	return nil
 }
 

jobs/jobs.go

@@ -41,7 +41,11 @@ func startJobs() {
 	// Log paths
 	logsPath := path.Join(arn.Root, "logs")
 	jobLogsPath := path.Join(arn.Root, "logs", "jobs")
-	os.Mkdir(jobLogsPath, 0777)
+	err := os.Mkdir(jobLogsPath, 0777)
+
+	if err != nil {
+		panic(err)
+	}
 
 	// Scheduler log
 	mainLog := log.New()

jobs/mal-download/mal-download.go

@@ -31,8 +31,17 @@ func main() {
 	defer color.Green("Finished.")
 
 	// Create directories in case they're missing
-	os.Mkdir(animeDirectory, 0777)
-	os.Mkdir(characterDirectory, 0777)
+	err := os.Mkdir(animeDirectory, 0777)
+
+	if err != nil {
+		panic(err)
+	}
+
+	err = os.Mkdir(characterDirectory, 0777)
+
+	if err != nil {
+		panic(err)
+	}
 
 	// Called with arguments?
 	if InvokeShellArgs() {
@@ -128,11 +137,15 @@ func queueAnime(anime *arn.Anime, malCrawler *crawler.Crawler) {
 		return
 	}
 
-	malCrawler.Queue(&crawler.Task{
+	err = malCrawler.Queue(&crawler.Task{
 		URL:         url,
 		Destination: filePath,
 		Raw:         true,
 	})
+
+	if err != nil {
+		panic(err)
+	}
 }
 
 func queueCharacter(character *arn.Character, malCrawler *crawler.Crawler) {
@@ -146,9 +159,13 @@ func queueCharacter(character *arn.Character, malCrawler *crawler.Crawler) {
 		return
 	}
 
-	malCrawler.Queue(&crawler.Task{
+	err = malCrawler.Queue(&crawler.Task{
 		URL:         url,
 		Destination: filePath,
 		Raw:         true,
 	})
+
+	if err != nil {
+		panic(err)
+	}
 }

jobs/mal-parse/mal-parse.go

@@ -35,7 +35,7 @@ func main() {
 func readFiles(root string, onFile func(string) error) {
 	count := 0
 
-	filepath.Walk(root, func(name string, info os.FileInfo, err error) error {
+	err := filepath.Walk(root, func(name string, info os.FileInfo, err error) error {
 		if err != nil {
 			color.Red(err.Error())
 			return err
@@ -61,6 +61,10 @@ func readFiles(root string, onFile func(string) error) {
 		return nil
 	})
 
+	if err != nil {
+		panic(err)
+	}
+
 	// Erase line
 	print("\r\033[2K")
 

jobs/mal-parse/shell.go

@@ -30,7 +30,11 @@ func InvokeShellArgs() bool {
 				panic("No MAL ID")
 			}
 
-			readAnimeFile(path.Join(arn.Root, "jobs", "mal-download", "anime", anime.GetMapping("myanimelist/anime")+".html.gz"))
+			err = readAnimeFile(path.Join(arn.Root, "jobs", "mal-download", "anime", anime.GetMapping("myanimelist/anime")+".html.gz"))
+
+			if err != nil {
+				panic(err)
+			}
 
 		case "character":
 			character, err := arn.GetCharacter(objectID)
@@ -40,7 +44,11 @@ func InvokeShellArgs() bool {
 				panic("No MAL ID")
 			}
 
-			readCharacterFile(path.Join(arn.Root, "jobs", "mal-download", "character", character.GetMapping("myanimelist/character")+".html.gz"))
+			err = readCharacterFile(path.Join(arn.Root, "jobs", "mal-download", "character", character.GetMapping("myanimelist/character")+".html.gz"))
+
+			if err != nil {
+				panic(err)
+			}
 		}
 
 		return true

jobs/twist/twist.go

@@ -46,7 +46,12 @@ func main() {
 		}
 
 		// Refresh
-		anime.RefreshEpisodes()
+		err := anime.RefreshEpisodes()
+
+		if err != nil {
+			color.Red(err.Error())
+			continue
+		}
 
 		// Ok
 		color.Green("Found %d episodes for anime %s (Kitsu: %s)", len(anime.Episodes().Items), anime.ID, kitsuID)

pages/editor/jobs/start.go

@@ -35,7 +35,12 @@ func Start(ctx aero.Context) error {
 		return ctx.Error(http.StatusBadRequest, "Job is currently running!")
 	}
 
-	job.Start()
+	err := job.Start()
+
+	if err != nil {
+		return ctx.Error(http.StatusInternalServerError, "Job could not be started!", err)
+	}
+
 	jobLogs = append(jobLogs, user.Nick+" started "+job.Name+" job ("+arn.DateTimeUTC()+").")
 
 	return nil

pages/shop/buyitem.go

@@ -45,14 +45,20 @@ func BuyItem(ctx aero.Context) error {
 		return ctx.Error(http.StatusBadRequest, "Not enough gems. You need to charge up your balance before you can buy this item.")
 	}
 
-	user.Balance -= totalPrice
-	user.Save()
-
 	// Add item to user inventory
 	inventory := user.Inventory()
-	inventory.AddItem(itemID, uint(quantity))
+	err = inventory.AddItem(itemID, uint(quantity))
+
+	if err != nil {
+		return ctx.Error(http.StatusBadRequest, err)
+	}
+
 	inventory.Save()
 
+	// Deduct balance
+	user.Balance -= totalPrice
+	user.Save()
+
 	// Save purchase
 	purchase := arn.NewPurchase(user.ID, itemID, quantity, int(item.Price), "gem")
 	purchase.Save()

pages/soundtrack/download.go

@@ -23,6 +23,5 @@ func Download(ctx aero.Context) error {
 		return ctx.Error(http.StatusNotFound, "Track not found", err)
 	}
 
-	track.Download()
-	return nil
+	return track.Download()
 }

patches/add-item/add-item.go

@@ -3,6 +3,7 @@ package main
 import (
 	"flag"
 
+	"github.com/akyoto/color"
 	"github.com/animenotifier/notify.moe/arn"
 )
 
@@ -33,17 +34,28 @@ func main() {
 		// Single user
 		user, err := arn.GetUserByNick(nick)
 		arn.PanicOnError(err)
-		addItemToUser(user)
+		err = addItemToUser(user)
+		arn.PanicOnError(err)
 	} else {
 		// All users
 		for user := range arn.StreamUsers() {
-			addItemToUser(user)
+			err = addItemToUser(user)
+
+			if err != nil {
+				color.Red(err.Error())
+			}
 		}
 	}
 }
 
-func addItemToUser(user *arn.User) {
+func addItemToUser(user *arn.User) error {
 	inventory := user.Inventory()
-	inventory.AddItem(itemID, uint(quantity))
+	err := inventory.AddItem(itemID, uint(quantity))
+
+	if err != nil {
+		return err
+	}
+
 	inventory.Save()
+	return nil
 }

patches/kitsu-download-anime-images/kitsu-download-anime-images.go

@@ -47,7 +47,11 @@ func main() {
 
 	for index, anime := range allAnime {
 		fmt.Printf("%d / %d\n", index+1, len(allAnime))
-		work(anime)
+		err := work(anime)
+
+		if err != nil {
+			color.Red(err.Error())
+		}
 	}
 
 	// Give file buffers some time, just to be safe
@@ -63,16 +67,18 @@ func work(anime *arn.Anime) error {
 	response, err := client.Get(kitsuOriginal).End()
 
 	if err != nil {
-		color.Red("%s (%s)", err.Error(), kitsuOriginal)
-		return err
+		return fmt.Errorf("%s (%s)", err.Error(), kitsuOriginal)
 	}
 
 	if response.StatusCode() != http.StatusOK {
-		color.Red("Status %d (%s)", response.StatusCode(), kitsuOriginal)
-		return err
+		return fmt.Errorf("Status %d (%s)", response.StatusCode(), kitsuOriginal)
 	}
 
-	anime.SetImageBytes(response.Bytes())
+	err = anime.SetImageBytes(response.Bytes())
+
+	if err != nil {
+		return err
+	}
 
 	// Try to free up some memory
 	runtime.GC()

patches/optimize-all-webm-files/optimize-all-webm-files.go

@@ -64,7 +64,7 @@ func mkclean(file string) error {
 
 // Read files in a given directory and apply a function on them
 func readFiles(root string, onFile func(string) error) {
-	filepath.Walk(root, func(name string, info os.FileInfo, err error) error {
+	err := filepath.Walk(root, func(name string, info os.FileInfo, err error) error {
 		if err != nil {
 			color.Red(err.Error())
 			return err
@@ -87,4 +87,8 @@ func readFiles(root string, onFile func(string) error) {
 		// Always continue traversing the directory
 		return nil
 	})
+
+	if err != nil {
+		color.Red(err.Error())
+	}
 }

patches/remove-character-borders/remove-character-borders.go

@@ -62,7 +62,13 @@ func process(character *arn.Character) {
 		return
 	}
 
-	character.SetImageBytes(buffer.Bytes())
+	err = character.SetImageBytes(buffer.Bytes())
+
+	if err != nil {
+		color.Red(err.Error())
+		return
+	}
+
 	character.Save()
 }
 

patches/user-references/user-references.go

@@ -33,7 +33,11 @@ func main() {
 		user.ForceSetNick(user.Nick)
 
 		if user.Email != "" {
-			user.SetEmail(user.Email)
+			err := user.SetEmail(user.Email)
+
+			if err != nil {
+				color.Red(err.Error())
+			}
 		}
 
 		if user.Accounts.Google.ID != "" {