73 lines
1.6 KiB
Go
73 lines
1.6 KiB
Go
package fs
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import (
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"fmt"
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"io"
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"os"
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"path/filepath"
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"git.solsynth.dev/hypernet/paperclip/pkg/internal/database"
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"git.solsynth.dev/hypernet/paperclip/pkg/internal/models"
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"github.com/spf13/viper"
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)
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func MergeFileChunks(meta models.AttachmentFragment, arrange []string) (models.Attachment, error) {
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attachment := meta.ToAttachment()
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// Fetch destination from config
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destMap := viper.GetStringMapString("destinations.0")
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var dest models.LocalDestination
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dest.Path = destMap["path"]
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// Create the destination file
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destPath := filepath.Join(dest.Path, meta.Uuid)
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destFile, err := os.Create(destPath)
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if err != nil {
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return attachment, err
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}
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defer destFile.Close()
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// 32KB buffer
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buf := make([]byte, 32*1024)
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// Merge the chunks into the destination file
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for _, chunk := range arrange {
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chunkPath := filepath.Join(dest.Path, fmt.Sprintf("%s.part%s", meta.Uuid, chunk))
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chunkFile, err := os.Open(chunkPath)
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if err != nil {
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return attachment, err
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}
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defer chunkFile.Close() // Ensure the file is closed after reading
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for {
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n, err := chunkFile.Read(buf)
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if err != nil && err != io.EOF {
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return attachment, err
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}
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if n == 0 {
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break
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}
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if _, err := destFile.Write(buf[:n]); err != nil {
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return attachment, err
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}
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}
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}
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// Clean up: remove chunk files
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go DeleteFragment(meta)
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for _, chunk := range arrange {
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chunkPath := filepath.Join(dest.Path, fmt.Sprintf("%s.part%s", meta.Uuid, chunk))
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if err := os.Remove(chunkPath); err != nil {
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return attachment, err
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}
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}
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// Clean up: remove fragment record
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database.C.Delete(&meta)
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return attachment, nil
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}
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