feat(note/save): setup save note (#17)

* feat(file): added file type

* feat(file_handler): added filehandler with placeholder func

* ref(links): updated link model and table

* feat(links): added link extration on file save

* feat(note_repo): added get by slug query

core/file_handling/file.go

@@ -0,0 +1,82 @@
+package filehandling
+
+import (
+	"bytes"
+	"os"
+	"path/filepath"
+	"regexp"
+	"strings"
+)
+
+type File struct {
+	Title       string
+	Slug        string
+	FrontMatter FrontMatter
+	Content     []string
+	Links       []ExtractedLink
+}
+
+type ExtractedLink struct {
+	Raw        string
+	Display    string
+	TargetSlug string
+	Line       int
+	Col        int
+}
+
+func ReadFile(path string) (*File, error) {
+	body, err := os.ReadFile(path)
+	if err != nil {
+		return nil, err
+	}
+
+	body = bytes.TrimSpace(body)
+
+	fm, err := ParseFrontMatter(body)
+	if err != nil {
+		return nil, err
+	}
+
+	return &File{
+		Title:       fm.Title,
+		Slug:        strings.TrimSuffix(filepath.Base(path), filepath.Ext(path)),
+		FrontMatter: *fm,
+		Content:     strings.Split(string(body), "\n"),
+		Links:       ExtractLinks(body),
+	}, nil
+}
+
+var linkRegex = regexp.MustCompile(`\[\[([^\]|]+)(?:\|([^\]]+))?\]\]`)
+
+func ExtractLinks(body []byte) []ExtractedLink {
+	var links []ExtractedLink
+
+	lineStart := 0
+	lineNum := 1
+
+	for i := 0; i <= len(body); i++ {
+		if i == len(body) || body[i] == '\n' {
+			line := body[lineStart:i]
+			matches := linkRegex.FindAllSubmatchIndex(line, -1)
+			for _, m := range matches {
+				raw := string(line[m[0]:m[1]])
+				slug := string(line[m[2]:m[3]])
+				var display string
+				if m[4] != -1 {
+					display = string(line[m[4]:m[5]])
+				}
+				links = append(links, ExtractedLink{
+					TargetSlug: slug,
+					Raw:        raw,
+					Display:    display,
+					Line:       lineNum,
+					Col:        m[0] + 1,
+				})
+			}
+			lineStart = i + 1
+			lineNum++
+		}
+	}
+
+	return links
+}

core/handlers/note/save_note.go

@@ -4,14 +4,12 @@ import (
 	"context"
 	"encoding/json"
 
+	filehandling "github.com/KristianJBorgwarth/dendrite.daemon/core/file_handling"
 	"github.com/KristianJBorgwarth/dendrite.daemon/persistence/repositories"
 )
 
 type saveNoteCommand struct {
-	Title     string   `json:"title"`
-	Content   string   `json:"content"`
-	Directory string   `json:"directory"`
-	Tags      []string `json:"tags"`
+	Path      string   `json:"path"`
 }
 
 type SaveNoteHandler struct {
@@ -29,5 +27,27 @@ func (h *SaveNoteHandler) Handle(ctx context.Context, raw json.RawMessage) (any,
 		return nil, err
 	}
 
+	file, err := filehandling.ReadFile(cmd.Path)
+	if err != nil {
+		return nil, err
+	}
+
+	tx, err := h.uow.Begin()
+	if err != nil {
+		return nil, err
+	}
+
+	defer h.uow.Rollback()
+	tagRepo := repositories.NewTagRepository(tx)
+	noteRepo := repositories.NewNoteRepository(tx)
+
+	
+	note, err := noteRepo.GetBySlug(ctx, file.Slug)
+	if err != nil {
+		return nil, err
+	}
+
+
+
 	return nil, nil
 }

persistence/repositories/note_repository.go

@@ -30,3 +30,16 @@ func (r *noteRepository) Insert(ctx context.Context, note *models.Note) error {
 	_, err := r.Transaction.ExecContext(ctx, query, note.ID(), note.Title(), note.Path(), note.Slug())
 	return err
 }
+
+func (r *noteRepository) GetBySlug(ctx context.Context, slug string) (*models.Note, error) {
+	query := `SELECT id, title, path, slug, created_at, updated_at FROM notes WHERE slug = ?`
+	row := r.Transaction.QueryRowContext(ctx, query, slug)
+
+	var id, title, path, createdAt, updatedAt string
+	err := row.Scan(&id, &title, &path, &slug, &createdAt, &updatedAt)
+	if err != nil {
+		return nil, err
+	}
+
+	return models.NewNote(id, path, title, slug, createdAt, updatedAt), nil
+}