Finish migration to mysqlite

downloader.go

@@ -16,7 +16,7 @@ import (
 	"time"
 )
 
-func DownloadAllVideos(db *mysqlite.Db) error {
+func DownloadAllVideos(db *mysqlite.Db) (rerr error) {
 	// Ensure no partial videos exist
 	tempDir := os.Getenv("VIVAPLUS_DOWNLOAD")
 	if tempDir == "" {
@@ -43,116 +43,120 @@ func DownloadAllVideos(db *mysqlite.Db) error {
 
 	log.Printf("Starting downloads...")
 	for {
-		// Fetch the next record from the database
-		var id, episode int
-		var href, cast, title, description, uploadDateStr, thumbnailUrl string
-		err = db.Query("select id, url, `cast`, title, description, upload_date, thumbnail, episode from videos where state = 'pending' and episode is not null order by year, episode limit 1").
-			ScanSingle(&id, &href, &cast, &title, &description, &uploadDateStr, &thumbnailUrl, &episode)
-		if errors.Is(err, sql.ErrNoRows) {
-			log.Printf("No videos found for downloading")
-			return nil
-		}
+		err = downloadVideo(db, downloadDir, tempDir)
 		if err != nil {
-			return fmt.Errorf("error fetching record: %w", err)
+			return err
 		}
-		uploadDate, err := time.Parse(time.DateOnly, uploadDateStr)
-		if err != nil {
-			return fmt.Errorf("error parsing upload date '%s': %w", uploadDateStr, err)
-		}
-
-		// Download the actual video
-		baseFileName := fmt.Sprintf("/S%dE%03d", uploadDate.Year(), episode)
-		log.Printf("Downloading %s", href)
-		cmd := exec.Command("yt-dlp", cast, "-o", filepath.Join(tempDir, baseFileName+".%(ext)s"))
-		cmd.Stderr = os.Stderr
-		cmd.Stdout = os.Stdout
-		err = cmd.Run()
-		if err != nil {
-			return fmt.Errorf("error downloading video: %w", err)
-		}
-
-		// Move it into the destination directory
-		destinationDir := filepath.Join(downloadDir, fmt.Sprintf("Season %d", uploadDate.Year()))
-		err = os.MkdirAll(destinationDir, 0750)
-		if err != nil {
-			return fmt.Errorf("error creating target directory: %w", err)
-		}
-		files, err := os.ReadDir(tempDir)
-		if err != nil {
-			return fmt.Errorf("error retrieving downloaded files: %w", err)
-		}
-
-		for _, file := range files {
-			srcPath := filepath.Join(tempDir, file.Name())
-			destPath := filepath.Join(destinationDir, file.Name())
-			log.Printf("Moving %s to %s", srcPath, destPath)
-			err = os.Rename(srcPath, destPath)
-			if err != nil {
-				return fmt.Errorf("error moving file: %w", err)
-			}
-		}
-
-		// Write XML sidecar
-		nfo := NFO{}
-		nfo.Plot = description
-		nfo.Title = title
-		nfo.Year = uploadDate.Year()
-		nfo.Aired = uploadDate.Format(time.DateOnly)
-		nfoData, err := xml.MarshalIndent(nfo, "", "    ")
-		if err != nil {
-			return fmt.Errorf("error marshalling NFO data: %w", err)
-		}
-		nfoString := xml.Header + string(nfoData)
-		nfoFile, err := os.Create(filepath.Join(destinationDir, baseFileName+".nfo"))
-		defer nfoFile.Close()
-		_, err = nfoFile.WriteString(nfoString)
-		if err != nil {
-			return fmt.Errorf("error writing NFO file: %w", err)
-		}
-
-		// Write thumbnail
-		parsedThumbnailUrl, err := url.Parse(thumbnailUrl)
-		if err != nil {
-			return fmt.Errorf("error parsing thumbnail url: %w", err)
-		}
-		thumbnailExt := filepath.Ext(parsedThumbnailUrl.Path)
-		thumbnailFile, err := os.Create(filepath.Join(destinationDir, baseFileName+"-thumb"+thumbnailExt))
-		if err != nil {
-			return fmt.Errorf("error creating thumbnail: %w", err)
-		}
-		defer thumbnailFile.Close()
-		thumbnailResp, err := http.Get(thumbnailUrl)
-		if err != nil {
-			return fmt.Errorf("error fetching thumbnail: %w", err)
-		}
-		defer thumbnailResp.Body.Close()
-		_, err = io.Copy(thumbnailFile, thumbnailResp.Body)
-		if err != nil {
-			return fmt.Errorf("error writing thumbnail: %w", err)
-		}
-
-		// Set the database state to done
-		tx, err := db.Begin()
-		if err != nil {
-			return fmt.Errorf("error starting transaction: %w", err)
-		}
-		defer tx.Rollback()
-		result, err := tx.Exec("update videos set state = 'done' where id = ?", id)
-		if err != nil {
-			return fmt.Errorf("error updating database: %w", err)
-		}
-		count, err := result.RowsAffected()
-		if err != nil {
-			return fmt.Errorf("error getting number of rows affected: %d", err)
-		}
-		if count != 1 {
-			return fmt.Errorf("unexpected number of rows changed (expected exactly 1): %d", count)
-		}
-		err = tx.Commit()
-		if err != nil {
-			return fmt.Errorf("error commiting transaction: %w", err)
-		}
-
-		log.Printf("Finished downloading file")
 	}
 }
+
+func downloadVideo(db *mysqlite.Db, downloadDir string, tempDir string) (rerr error) {
+	// Fetch the next record from the database
+	var id, episode int
+	var href, cast, title, description, uploadDateStr, thumbnailUrl string
+	err := db.Query("select id, url, `cast`, title, description, upload_date, thumbnail, episode from videos where state = 'pending' and episode is not null order by year, episode limit 1").
+		ScanSingle(&id, &href, &cast, &title, &description, &uploadDateStr, &thumbnailUrl, &episode)
+	if errors.Is(err, sql.ErrNoRows) {
+		log.Printf("No videos found for downloading")
+		return nil
+	}
+	if err != nil {
+		return fmt.Errorf("error fetching record: %w", err)
+	}
+	uploadDate, err := time.Parse(time.DateOnly, uploadDateStr)
+	if err != nil {
+		return fmt.Errorf("error parsing upload date '%s': %w", uploadDateStr, err)
+	}
+
+	// Download the actual video
+	baseFileName := fmt.Sprintf("/S%dE%03d", uploadDate.Year(), episode)
+	log.Printf("Downloading %s", href)
+	cmd := exec.Command("yt-dlp", cast, "-o", filepath.Join(tempDir, baseFileName+".%(ext)s"))
+	cmd.Stderr = os.Stderr
+	cmd.Stdout = os.Stdout
+	err = cmd.Run()
+	if err != nil {
+		return fmt.Errorf("error downloading video: %w", err)
+	}
+
+	// Move it into the destination directory
+	destinationDir := filepath.Join(downloadDir, fmt.Sprintf("Season %d", uploadDate.Year()))
+	err = os.MkdirAll(destinationDir, 0750)
+	if err != nil {
+		return fmt.Errorf("error creating target directory: %w", err)
+	}
+	files, err := os.ReadDir(tempDir)
+	if err != nil {
+		return fmt.Errorf("error retrieving downloaded files: %w", err)
+	}
+
+	for _, file := range files {
+		srcPath := filepath.Join(tempDir, file.Name())
+		destPath := filepath.Join(destinationDir, file.Name())
+		log.Printf("Moving %s to %s", srcPath, destPath)
+		err = os.Rename(srcPath, destPath)
+		if err != nil {
+			return fmt.Errorf("error moving file: %w", err)
+		}
+	}
+
+	// Write XML sidecar
+	nfo := NFO{}
+	nfo.Plot = description
+	nfo.Title = title
+	nfo.Year = uploadDate.Year()
+	nfo.Aired = uploadDate.Format(time.DateOnly)
+	nfoData, err := xml.MarshalIndent(nfo, "", "    ")
+	if err != nil {
+		return fmt.Errorf("error marshalling NFO data: %w", err)
+	}
+	nfoString := xml.Header + string(nfoData)
+	nfoFile, err := os.Create(filepath.Join(destinationDir, baseFileName+".nfo"))
+	if err != nil {
+		return fmt.Errorf("error creating NFO file: %w", err)
+	}
+	defer forwardError(nfoFile.Close(), &rerr)
+	_, err = nfoFile.WriteString(nfoString)
+	if err != nil {
+		return fmt.Errorf("error writing NFO file: %w", err)
+	}
+
+	// Write thumbnail
+	parsedThumbnailUrl, err := url.Parse(thumbnailUrl)
+	if err != nil {
+		return fmt.Errorf("error parsing thumbnail url: %w", err)
+	}
+	thumbnailExt := filepath.Ext(parsedThumbnailUrl.Path)
+	thumbnailFile, err := os.Create(filepath.Join(destinationDir, baseFileName+"-thumb"+thumbnailExt))
+	if err != nil {
+		return fmt.Errorf("error creating thumbnail: %w", err)
+	}
+	defer forwardError(thumbnailFile.Close(), &rerr)
+	thumbnailResp, err := http.Get(thumbnailUrl)
+	if err != nil {
+		return fmt.Errorf("error fetching thumbnail: %w", err)
+	}
+	defer forwardError(thumbnailResp.Body.Close(), &rerr)
+	_, err = io.Copy(thumbnailFile, thumbnailResp.Body)
+	if err != nil {
+		return fmt.Errorf("error writing thumbnail: %w", err)
+	}
+
+	// Set the database state to done
+	tx, err := db.Begin()
+	if err != nil {
+		return fmt.Errorf("error starting transaction: %w", err)
+	}
+	defer forwardError(tx.Rollback(), &rerr)
+	err = tx.Query("update videos set state = 'done' where id = ?").Bind(id).Exec()
+	if err != nil {
+		return fmt.Errorf("error updating database: %w", err)
+	}
+	err = tx.Commit()
+	if err != nil {
+		return fmt.Errorf("error commiting transaction: %w", err)
+	}
+
+	log.Printf("Finished downloading file")
+	return nil
+}

util.go

@@ -0,0 +1,7 @@
+package main
+
+func forwardError(err error, to *error) {
+	if err != nil {
+		*to = err
+	}
+}