search added

internal/handlers/handlers.go

@@ -547,3 +547,104 @@ func (h *Handlers) TreeAPIHandler(c *gin.Context) {
 
 	c.JSON(http.StatusOK, notesTree)
 }
+
+// SearchHandler performs a simple full-text search across markdown and allowed text files
+// within the notes directory, honoring skipped directories.
+// GET /api/search?q=term
+func (h *Handlers) SearchHandler(c *gin.Context) {
+	query := strings.TrimSpace(c.Query("q"))
+	if query == "" {
+		c.JSON(http.StatusBadRequest, gin.H{"error": "missing query"})
+		return
+	}
+
+	// Case-insensitive search
+	qLower := strings.ToLower(query)
+
+	type Snippet struct {
+		Line    int    `json:"line"`
+		Preview string `json:"preview"`
+	}
+	type Result struct {
+		Path     string    `json:"path"`
+		Type     string    `json:"type"` // "md" or "text"
+		Snippets []Snippet `json:"snippets"`
+	}
+
+	results := make([]Result, 0, 32)
+
+	// Walk the notes directory
+	err := filepath.Walk(h.config.NotesDir, func(path string, info os.FileInfo, err error) error {
+		if err != nil {
+			return nil // skip on error
+		}
+		if info.IsDir() {
+			// Compute relative dir path to check skip list
+			rel, _ := filepath.Rel(h.config.NotesDir, path)
+			rel = filepath.ToSlash(rel)
+			if rel == "." {
+				rel = ""
+			}
+			if utils.IsPathInSkippedDirs(rel, h.config.NotesDirSkip) {
+				return filepath.SkipDir
+			}
+			return nil
+		}
+
+		// Compute relative file path
+		relPath, _ := filepath.Rel(h.config.NotesDir, path)
+		relPath = filepath.ToSlash(relPath)
+
+		// Skip disallowed files
+		ext := strings.ToLower(filepath.Ext(relPath))
+		isMD := ext == ".md"
+		if !isMD && !models.IsAllowedFile(relPath, h.config.AllowedFileExtensions) {
+			return nil
+		}
+
+		// Read file content (limit size to prevent huge memory usage)
+		data, readErr := os.ReadFile(path)
+		if readErr != nil {
+			return nil
+		}
+		content := string(data)
+		contentLower := strings.ToLower(content)
+		if !strings.Contains(contentLower, qLower) {
+			return nil
+		}
+
+		// Build snippets: show up to 3 matches with 2 lines of context
+		lines := strings.Split(content, "\n")
+		linesLower := strings.Split(contentLower, "\n")
+		snippets := make([]Snippet, 0, 3)
+		for i := 0; i < len(linesLower) && len(snippets) < 3; i++ {
+			if strings.Contains(linesLower[i], qLower) {
+				start := i - 2
+				if start < 0 {
+					start = 0
+				}
+				end := i + 2
+				if end >= len(lines) {
+					end = len(lines) - 1
+				}
+				// Join preview lines
+				preview := strings.Join(lines[start:end+1], "\n")
+				snippets = append(snippets, Snippet{Line: i + 1, Preview: preview})
+			}
+		}
+
+		rtype := "text"
+		if isMD {
+			rtype = "md"
+		}
+		results = append(results, Result{Path: relPath, Type: rtype, Snippets: snippets})
+		return nil
+	})
+
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
+		return
+	}
+
+	c.JSON(http.StatusOK, gin.H{"query": query, "results": results})
+}