62 lines
1.4 KiB
Go
62 lines
1.4 KiB
Go
package server
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import (
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"context"
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"crypto/md5"
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"fmt"
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"io"
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"log/slog"
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"os"
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"path/filepath"
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"slices"
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"git.lastassault.de/speatzle/morffix/constants"
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)
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func hashFile(ctx context.Context, id uint) error {
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slog.InfoContext(ctx, "Hashing File", "id", id)
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var filePath string
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var libraryPath string
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var oldHash []byte
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err := db.QueryRow(ctx, "SELECT f.path, l.path, md5 FROM files f INNER JOIN libraries l ON l.id = f.library_id WHERE f.id = $1", id).Scan(&filePath, &libraryPath, &oldHash)
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if err != nil {
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return fmt.Errorf("Get File: %w", err)
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}
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fullPath := filepath.Join(libraryPath, filePath)
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file, err := os.Open(fullPath)
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if err != nil {
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return fmt.Errorf("Opening File: %w", err)
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}
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hash := md5.New()
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if _, err := io.Copy(hash, file); err != nil {
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return fmt.Errorf("Reading File: %w", err)
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}
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newHash := hash.Sum(nil)
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if slices.Compare[[]byte](newHash, oldHash) != 0 {
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// File has changed
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// TODO Queue healthcheck / transcode if enabled
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}
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tx, err := db.Begin(ctx)
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if err != nil {
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return fmt.Errorf("Begin Transaction: %w", err)
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}
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defer tx.Rollback(ctx)
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_, err = tx.Exec(ctx, "UPDATE files SET status = $2, md5 = $3 WHERE id = $1", id, constants.FILE_STATUS_EXISTS, newHash)
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if err != nil {
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return fmt.Errorf("Updating File in DB: %w", err)
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}
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err = tx.Commit(ctx)
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if err != nil {
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return fmt.Errorf("Committing Changes: %w", err)
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}
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slog.InfoContext(ctx, "Hashing File Done", "id", id)
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return nil
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}
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