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|
package worker
import (
"context"
"crypto/md5"
"encoding/hex"
"io/fs"
"mime"
"path/filepath"
"strings"
"git.sr.ht/~gabrielgio/img/pkg/database/repository"
)
type (
FileScanner struct {
root string
repository repository.MediaRepository
}
)
var _ ChanProcessor[string] = &FileScanner{}
func NewFileScanner(root string, repository repository.MediaRepository) *FileScanner {
return &FileScanner{
root: root,
repository: repository,
}
}
func (f *FileScanner) Query(ctx context.Context) (<-chan string, error) {
c := make(chan string)
go func() {
defer close(c)
_ = filepath.Walk(f.root, func(path string, info fs.FileInfo, err error) error {
select {
case <-ctx.Done():
return filepath.SkipAll
default:
}
if info == nil {
return nil
}
if info.IsDir() && filepath.Base(info.Name())[0] == '.' {
return filepath.SkipDir
}
if info.IsDir() {
return nil
}
c <- path
return nil
})
}()
return c, nil
}
func (f *FileScanner) Process(ctx context.Context, path string) error {
m := mime.TypeByExtension(filepath.Ext(path))
if !strings.HasPrefix(m, "video") && !strings.HasPrefix(m, "image") {
return nil
}
hash := md5.Sum([]byte(path))
str := hex.EncodeToString(hash[:])
name := filepath.Base(path)
exists, errResp := f.repository.Exists(ctx, str)
if errResp != nil {
return errResp
}
if exists {
return nil
}
return f.repository.Create(ctx, &repository.CreateMedia{
Name: name,
Path: path,
PathHash: str,
MIMEType: m,
})
}
|
