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package api
import (
"bufio"
"context"
"fmt"
"os"
"path/filepath"
"regexp"
"sort"
"strings"
"time"
"task-dashboard/internal/models"
)
// ObsidianClient handles reading notes from an Obsidian vault
type ObsidianClient struct {
vaultPath string
}
// NewObsidianClient creates a new Obsidian vault reader
func NewObsidianClient(vaultPath string) *ObsidianClient {
return &ObsidianClient{
vaultPath: vaultPath,
}
}
// fileInfo holds file metadata for sorting
type fileInfo struct {
path string
modTime time.Time
}
// GetNotes reads and returns the most recently modified notes from the vault
func (c *ObsidianClient) GetNotes(ctx context.Context, limit int) ([]models.Note, error) {
if c.vaultPath == "" {
return nil, fmt.Errorf("obsidian vault path not configured")
}
// Check if vault path exists
if _, err := os.Stat(c.vaultPath); os.IsNotExist(err) {
return nil, fmt.Errorf("vault path does not exist: %s", c.vaultPath)
}
// Collect all markdown files with their modification times
var files []fileInfo
err := filepath.Walk(c.vaultPath, func(path string, info os.FileInfo, err error) error {
if err != nil {
return nil // Skip files we can't access
}
// Skip symbolic links to prevent path traversal
if info.Mode()&os.ModeSymlink != 0 {
return nil
}
// Skip directories and non-markdown files
if info.IsDir() || !strings.HasSuffix(info.Name(), ".md") {
return nil
}
// Skip hidden files and directories
if strings.HasPrefix(info.Name(), ".") {
return nil
}
files = append(files, fileInfo{
path: path,
modTime: info.ModTime(),
})
return nil
})
if err != nil {
return nil, fmt.Errorf("failed to walk vault directory: %w", err)
}
// Sort by modification time (most recent first)
sort.Slice(files, func(i, j int) bool {
return files[i].modTime.After(files[j].modTime)
})
// Limit the number of files to process
if limit > 0 && len(files) > limit {
files = files[:limit]
}
// Parse each file
notes := make([]models.Note, 0, len(files))
for _, file := range files {
note, err := c.parseMarkdownFile(file.path, file.modTime)
if err != nil {
// Skip files that fail to parse
continue
}
notes = append(notes, *note)
}
return notes, nil
}
// parseMarkdownFile reads and parses a markdown file
func (c *ObsidianClient) parseMarkdownFile(path string, modTime time.Time) (*models.Note, error) {
file, err := os.Open(path)
if err != nil {
return nil, err
}
defer file.Close()
scanner := bufio.NewScanner(file)
var content strings.Builder
var tags []string
inFrontmatter := false
lineCount := 0
// Parse file
for scanner.Scan() {
line := scanner.Text()
lineCount++
// Check for YAML frontmatter
if lineCount == 1 && line == "---" {
inFrontmatter = true
continue
}
if inFrontmatter {
if line == "---" {
inFrontmatter = false
continue
}
// Extract tags from frontmatter
if strings.HasPrefix(line, "tags:") {
tagsStr := strings.TrimPrefix(line, "tags:")
tagsStr = strings.Trim(tagsStr, " []")
if tagsStr != "" {
tags = strings.Split(tagsStr, ",")
for i, tag := range tags {
tags[i] = strings.TrimSpace(tag)
}
}
}
continue
}
// Add to content (limit to preview)
if content.Len() < 500 { // Limit to ~500 chars
content.WriteString(line)
content.WriteString("\n")
}
}
if err := scanner.Err(); err != nil {
return nil, err
}
// Extract inline tags (e.g., #tag)
inlineTags := extractInlineTags(content.String())
tags = append(tags, inlineTags...)
tags = uniqueStrings(tags)
// Get filename and title
filename := filepath.Base(path)
title := strings.TrimSuffix(filename, ".md")
// Try to extract title from first H1 heading
contentStr := content.String()
h1Regex := regexp.MustCompile(`^#\s+(.+)$`)
lines := strings.Split(contentStr, "\n")
for _, line := range lines {
if matches := h1Regex.FindStringSubmatch(line); len(matches) > 1 {
title = matches[1]
break
}
}
note := &models.Note{
Filename: filename,
Title: title,
Content: strings.TrimSpace(contentStr),
Modified: modTime,
Path: path,
Tags: tags,
}
return note, nil
}
// extractInlineTags finds all #tags in the content
func extractInlineTags(content string) []string {
tagRegex := regexp.MustCompile(`#([a-zA-Z0-9_-]+)`)
matches := tagRegex.FindAllStringSubmatch(content, -1)
tags := make([]string, 0, len(matches))
for _, match := range matches {
if len(match) > 1 {
tags = append(tags, match[1])
}
}
return tags
}
// uniqueStrings returns a slice with duplicate strings removed
func uniqueStrings(slice []string) []string {
seen := make(map[string]bool)
result := make([]string, 0, len(slice))
for _, item := range slice {
if !seen[item] && item != "" {
seen[item] = true
result = append(result, item)
}
}
return result
}
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