Merge pull request #4 from KristianJBorgwarth/feat/note-creation

feat(create-note): create note and add tags

core/frontmatter/doc.go

@@ -0,0 +1,2 @@
+// Package frontmatter contains utilities for parsing front matter from documents.
+package frontmatter

core/frontmatter/parser.go

@@ -0,0 +1,55 @@
+package frontmatter
+
+import (
+	"bufio"
+	"bytes"
+	"encoding/json"
+	"errors"
+	"io"
+)
+
+type FrontMatter struct {
+	Title   string
+	Tags    []string
+	Created string
+	Updated string
+	Author  string
+}
+
+func ParseFrontMatter(r io.Reader) (map[string]string, error) {
+	scanner := bufio.NewScanner(r)
+	frontMatter := make(map[string]string)
+
+	for scanner.Scan() {
+		line := scanner.Text()
+		if line == "---" {
+			break
+		}
+		parts := bytes.SplitN([]byte(line), []byte(":"), 2)
+		if len(parts) != 2 {
+			return nil, errors.New("invalid front matter format")
+		}
+		key := string(bytes.TrimSpace(parts[0]))
+		value := string(bytes.TrimSpace(parts[1]))
+		frontMatter[key] = value
+	}
+
+	if err := scanner.Err(); err != nil {
+		return nil, err
+	}
+
+	return frontMatter, nil
+}
+
+func ExtractTags(frontMatter map[string]string) ([]string, error) {
+	tagsStr, ok := frontMatter["tags"]
+	if !ok {
+		return nil, errors.New("tags not found in front matter")
+	}
+	var tags []string
+	err := json.Unmarshal([]byte(tagsStr), &tags)
+	if err != nil {
+		return nil, err
+	}
+	return tags, nil
+}

core/frontmatter/slug.go

@@ -0,0 +1,19 @@
+package frontmatter
+
+import (
+	"bytes"
+)
+
+func Slugify(s string) string {
+	var slug bytes.Buffer
+	for _, r := range s {
+		if (r >= 'a' && r <= 'z') || (r >= '0' && r <= '9') {
+			slug.WriteRune(r)
+		} else if r >= 'A' && r <= 'Z' {
+			slug.WriteRune(r + 32) // Convert to lowercase
+		} else {
+			slug.WriteRune('-')
+		}
+	}
+	return slug.String()
+}

core/handlers/create_note.go

@@ -1,8 +1,11 @@
 package handlers
 
 import (
+	"bytes"
 	"encoding/json"
+	"os"
 
+	"github.com/KristianJBorgwarth/dendrite.daemon/core/frontmatter"
 	"github.com/KristianJBorgwarth/dendrite.daemon/core/rpc"
 	"github.com/KristianJBorgwarth/dendrite.daemon/persistence/repositories"
 )
@@ -14,21 +17,46 @@ type createNoteCommand struct {
 	Vars         map[string]string `json:"vars"`
 }
 
-type CreateNoteHandler struct{
-	repository repositories.NoteRepository
+type CreateNoteHandler struct {
+	noteRepo repositories.NoteRepository
+	tagRepo  repositories.TagRepository
 }
 
-func (h CreateNoteHandler) Handle(params []byte) (any, *rpc.Error) {
+func (h CreateNoteHandler) Handle(params []byte) (*rpc.Response, *rpc.Error) {
 	var cmd createNoteCommand
+
 	if err := json.Unmarshal(params, &cmd); err != nil {
-		return nil, &rpc.Error{Code: -32602, Message: "invalid params"}
+		return nil, h.ReturnError(err)
 	}
 
-	err := h.repository.Upsert(cmd.Title, cmd.Path, cmd.Path)
-
+	data, err := os.ReadFile(cmd.TemplatePath)
 	if err != nil {
-		return nil, &rpc.Error{Code: -1, Message: err.Error()}
+		return nil, h.ReturnError(err)
 	}
 
-	return map[string]any{"status": "ok"}, nil
+	feMatter, err := frontmatter.ParseFrontMatter(bytes.NewReader(data))
+	if err != nil {
+		return nil, h.ReturnError(err)
+	}
+
+	tags, err := frontmatter.ExtractTags(feMatter)
+	if err != nil {
+		return nil, h.ReturnError(err)
+	}
+
+	err = h.tagRepo.Upsert(tags)
+	if err != nil {
+		return nil, h.ReturnError(err)
+	}
+
+	err = h.noteRepo.Upsert(cmd.Title, cmd.Path, frontmatter.Slugify(cmd.Title))
+	if err != nil {
+		return nil, h.ReturnError(err)
+	}
+
+	return &rpc.Response{Jsonrpc: "2.0", Result: cmd.Path}, nil
+}
+
+func (h *CreateNoteHandler) ReturnError(err error) *rpc.Error {
+	return &rpc.Error{Code: -1, Message: err.Error()}
 }

persistence/repositories/tag_repository.go

@@ -1,10 +1,12 @@
-
 package repositories
 
-import "database/sql"
+import (
+	"database/sql"
+	"strings"
+)
 
 type TagRepository interface {
-	Upsert(title string, path string) error
+	Upsert(names []string) error
 }
 
 type tagRepository struct {
@@ -15,14 +17,34 @@ func NewTagRepository(db *sql.DB) TagRepository {
 	return &tagRepository{db: db}
 }
 
-func (r *tagRepository) Upsert(title string, path string) error {
-	query := `
-	INSERT INTO tags (title, path)
-	VALUES ($1, $2)
-	ON CONFLICT (slug) DO UPDATE
-	SET title = EXCLUDED.title,
-	    path = EXCLUDED.path;
-	`
-	_, err := r.db.Exec(query, title, path)
+func (r *tagRepository) Upsert(names []string) error {
+	if len(names) == 0 {
+		return nil
+	}
+
+	tx, err := r.db.Begin()
+	if err != nil {
 		return err
+	}
+	defer tx.Rollback()
+
+	placeholders := make([]string, 0, len(names))
+	args := make([]any, 0, len(names))
+
+	for _, name := range names {
+		placeholders = append(placeholders, "(?)")
+		args = append(args, name)
+	}
+
+	query := "WITH input(name) AS (VALUES " +
+		strings.Join(placeholders, ",") +
+		") INSERT INTO tags(name) " +
+		"SELECT name FROM input " +
+		"ON CONFLICT(name) DO NOTHING;"
+
+	if _, err := tx.Exec(query, args...); err != nil {
+		return err
+	}
+
+	return tx.Commit()
 }

test/frontmatter_test.go

@@ -0,0 +1,56 @@
+package frontmatter_test
+
+import (
+	"strings"
+	"testing"
+
+	"github.com/KristianJBorgwarth/dendrite.daemon/core/frontmatter"
+)
+
+func TestParseFrontMatter(t *testing.T) {
+	input := `title: My Note
+template: default
+tags: ["test", "note"]
+---
+This is the content of the note.`
+
+	expected := map[string]string{
+		"title":    "My Note",
+		"template": "default",
+		"tags":     `["test", "note"]`,
+	}
+
+	result, err := frontmatter.ParseFrontMatter(strings.NewReader(input))
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+
+	for key, expectedValue := range expected {
+		if value, ok := result[key]; !ok || value != expectedValue {
+			t.Errorf("expected %s to be %s, got %s", key, expectedValue, value)
+		}
+	}
+}
+
+func TestExtractTags(t *testing.T) {
+	frontMatter := map[string]string{
+		"tags": `["test", "note"]`,
+	}
+
+	expected := []string{"test", "note"}
+
+	result, err := frontmatter.ExtractTags(frontMatter)
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+
+	if len(result) != len(expected) {
+		t.Fatalf("expected %d tags, got %d", len(expected), len(result))
+	}
+
+	for i, expectedTag := range expected {
+		if result[i] != expectedTag {
+			t.Errorf("expected tag %d to be %s, got %s", i, expectedTag, result[i])
+		}
+	}
+}