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193 lines
4.5 KiB
Go
193 lines
4.5 KiB
Go
package main
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import (
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"flag"
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"fmt"
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"io/fs"
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"io/ioutil"
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"os"
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"path/filepath"
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"regexp"
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"strings"
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"go.uber.org/zap"
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)
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func NewAttachmentMover() *AttachmentMover {
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var am AttachmentMover
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l, _ := zap.NewProduction()
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am.L = l
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am.Attachments = make(map[string]bool)
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am.Posts = make([]string, 0)
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return &am
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}
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type AttachmentMover struct {
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Source, Target string
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Attachments map[string]bool
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Notes, Posts []string
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L *zap.Logger
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BlogDir, AttachmentsDir string
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}
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func (am *AttachmentMover) Walk() error {
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notesRoot := os.DirFS(am.Source)
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blogRoot := os.DirFS(am.Target)
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err := fs.WalkDir(notesRoot, ".", am.findAttachments)
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if err != nil {
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return fmt.Errorf("error scanning for attachments: %q", err)
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}
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err = fs.WalkDir(notesRoot, ".", am.findNotes)
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if err != nil {
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return fmt.Errorf("error scanning vault for posts: %q", err)
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}
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err = fs.WalkDir(blogRoot, ".", am.findPosts)
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if err != nil {
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return fmt.Errorf("error scanning blog for posts: %q", err)
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}
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return nil
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}
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func (am *AttachmentMover) findNotes(path string, d fs.DirEntry, err error) error {
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if err != nil {
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return err
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}
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if d.IsDir() {
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return nil
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}
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walkLogger := am.L.Named("FindNotes")
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if strings.HasSuffix(path, ".md") && strings.Contains(path, am.BlogDir) {
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walkLogger.Info("found blog post to publish, adding to index", zap.String("path", path))
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am.Notes = append(am.Notes, path)
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}
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return nil
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}
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func (am *AttachmentMover) findAttachments(path string, d fs.DirEntry, err error) error {
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if err != nil {
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return err
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}
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if d.IsDir() {
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return nil
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}
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walkLogger := am.L.Named("FindAttachments")
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if strings.Contains(path, am.AttachmentsDir) {
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walkLogger.Info("found attachment file, adding to index", zap.String("path", path))
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am.Attachments[path] = true
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}
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return nil
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}
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func (am *AttachmentMover) findPosts(path string, d fs.DirEntry, err error) error {
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if err != nil {
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return err
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}
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if d.IsDir() {
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return nil
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}
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walkLogger := am.L.Named("FindPosts")
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if strings.HasSuffix(path, "index.md") {
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walkLogger.Info("found index.md, adding to index", zap.String("path", path))
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am.Posts = append(am.Posts, path)
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}
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return nil
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}
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func (am *AttachmentMover) Move() error {
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moveLogger := am.L.Named("Move")
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moveLogger.Info("scanning posts", zap.Strings("posts", am.Posts))
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for _, post := range am.Notes {
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// log.Printf("scanning %q for attachment links", post)
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linkedAttachments, err := extractAttachments(filepath.Join(am.Source, post), am.L.Named("extractAttachments"))
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if err != nil {
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return fmt.Errorf("could not extract attachment links from %q: %w", post, err)
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}
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for _, attachment := range linkedAttachments {
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moveAttachment(post, attachment, am.L.Named("moveAttachment"))
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}
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}
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return nil
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}
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func moveAttachment(post, attachment string, l *zap.Logger) error {
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l.Info("moving attachment",
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zap.String("post", post),
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zap.String("attachment", attachment),
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)
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return nil
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}
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func extractAttachments(post string, l *zap.Logger) ([]string, error) {
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l.Info("extracting attachment",
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zap.String("post", post),
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)
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pat := regexp.MustCompile(`\[\[Resources\/attachments\/(.*)?\]\]`)
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attachments := make([]string, 0)
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postBody, err := ioutil.ReadFile(post)
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if err != nil {
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return attachments, fmt.Errorf("error opening post to scan for attachment links: %q", err)
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}
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for _, att := range pat.FindAll(postBody, -1) {
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l.Info("found attachment", zap.String("filename", string(att)))
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}
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return attachments, nil
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}
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func main() {
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am := NewAttachmentMover()
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defer am.L.Sync()
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flag.StringVar(&am.Source, "source", "", "source directory containing your vault")
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flag.StringVar(&am.Target, "target", "", "target directory containing your hugo site")
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flag.StringVar(&am.AttachmentsDir, "attachments", "", "directory containing your vault's attachments")
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flag.StringVar(&am.BlogDir, "blog", "", "vault directory containing blog posts to-be-published")
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flag.Parse()
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switch {
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case am.Source == "":
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am.L.Fatal("please provide -source")
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fallthrough
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case am.Target == "":
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am.L.Fatal("please provide -target")
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fallthrough
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case am.AttachmentsDir == "":
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am.L.Fatal("please provide -attachments")
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fallthrough
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case am.BlogDir == "":
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am.L.Fatal("please provide -blog")
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}
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if am.Source == "" || am.Target == "" {
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am.L.Fatal("flags not provided")
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}
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err := am.Walk()
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if err != nil {
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am.L.Fatal("error walking blog or notes dir to gather file names", zap.Error(err))
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}
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err = am.Move()
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if err != nil {
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am.L.Fatal("error moving notes", zap.Error(err))
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}
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}
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