Implement CLI mode and Markdown parsing

- Add CLI mode distinction (gocv vs gocv serve)
- Add goldmark dependency for Markdown parsing
- Create content reading logic from ./content directory
- Implement Markdown to HTML conversion
- Add sample content/index.md for testing
- Update .gitignore for build artifacts

Co-Authored-By: Claude (glm-5) <noreply@anthropic.com>

.gitignore

@@ -3,3 +3,7 @@
 data
 config.yaml
 *.sql
+
+# Build artifacts
+gocv
+output/

PLAN.md

@@ -1,28 +1,33 @@
 # Implementation Plan
 
 ## Project Constraints
-- [ ] Pure Go binary (no external system dependencies for PDF).
-- [ ] Config via `config.yaml` only (no CLI flags).
-- [ ] Hardcoded paths: `./content` (input), `./output` (build artifacts).
-- [ ] Modes: `gocv` (CLI), `gocv serve` (Daemon).
+- [x] Pure Go binary (no external system dependencies for PDF).
+- [x] Config via `config.yaml` only (no CLI flags).
+- [x] Hardcoded paths: `./content` (input), `./output` (build artifacts).
+- [x] Modes: `gocv` (CLI), `gocv serve` (Daemon).
 - [ ] Commit at every loop iteration. Do not push. Do not tag.
 
 ## Current Status
 - [x] Project backbone exists (HTTP server, graceful shutdown, config reading).
-- [ ] Markdown parsing logic implemented.
+- [x] Markdown parsing logic implemented (using goldmark).
 - [ ] HTML Template engine integrated (Hugo-like theme selection).
 - [ ] PDF Generation implemented (Pure Go library selected and integrated).
-- [ ] CLI Mode (`gocv`) generates static files to `./output` and exits.
+- [x] CLI Mode (`gocv`) generates static files to `./output` and exits.
 - [ ] Serve Mode (`gocv serve`) hosts HTML and serves PDF on demand.
 - [ ] File Watcher implemented for live reload in Serve Mode.
 - [ ] Dockerfile created for multi-stage build.
 
 ## Active Task
-- [ ] Analyze existing backbone code and integrate Markdown parsing.
+- [x] Analyze existing backbone code and integrate Markdown parsing.
+- [ ] Integrate HTML template engine with theme selection.
 
 ## Known Issues / Blockers
 - [ ] Identify best Pure Go PDF library that supports HTML/CSS (or define CSS subset).
+- [ ] Current output is raw HTML fragments without full HTML document structure.
 
 ## Completed Log
 - [x] Initial project structure defined.
 - [x] Basic HTTP server and signal handling implemented.
+- [x] CLI mode vs Serve mode distinction implemented (checks os.Args[1] for "serve").
+- [x] Content reading from `./content` directory implemented.
+- [x] Markdown to HTML conversion using goldmark library.

content.go

@@ -0,0 +1,108 @@
+package main
+
+import (
+	"bytes"
+	"fmt"
+	"os"
+	"path/filepath"
+	"strings"
+
+	"github.com/yuin/goldmark"
+)
+
+// ContentFile represents a parsed content file
+type ContentFile struct {
+	SourcePath string // Original .md file path
+	Name       string // File name without extension
+	Content    string // Raw markdown content
+	HTML       string // Converted HTML
+}
+
+// generateOutput reads content from ./content, processes it, and writes to ./output
+func generateOutput() error {
+	// Ensure content directory exists
+	if _, err := os.Stat(contentPath); os.IsNotExist(err) {
+		return fmt.Errorf("content directory does not exist: %s", contentPath)
+	}
+
+	// Ensure output directory exists
+	if err := os.MkdirAll(outputPath, 0755); err != nil {
+		return fmt.Errorf("failed to create output directory: %w", err)
+	}
+
+	// Read all markdown files from content directory
+	files, err := readContentFiles()
+	if err != nil {
+		return fmt.Errorf("failed to read content files: %w", err)
+	}
+
+	if len(files) == 0 {
+		fmt.Println("Warning: No markdown files found in content directory")
+		return nil
+	}
+
+	// Process each file
+	for _, file := range files {
+		fmt.Printf("Processing: %s\n", file.SourcePath)
+
+		// Convert markdown to HTML
+		html, err := markdownToHTML(file.Content)
+		if err != nil {
+			return fmt.Errorf("failed to convert %s: %w", file.SourcePath, err)
+		}
+		file.HTML = html
+
+		// Write output
+		outputFile := filepath.Join(outputPath, file.Name+".html")
+		if err := os.WriteFile(outputFile, []byte(html), 0644); err != nil {
+			return fmt.Errorf("failed to write %s: %w", outputFile, err)
+		}
+		fmt.Printf("  -> Written: %s\n", outputPath)
+	}
+
+	return nil
+}
+
+// readContentFiles reads all .md files from the content directory
+func readContentFiles() ([]ContentFile, error) {
+	var files []ContentFile
+
+	entries, err := os.ReadDir(contentPath)
+	if err != nil {
+		return nil, err
+	}
+
+	for _, entry := range entries {
+		if entry.IsDir() {
+			continue
+		}
+
+		name := entry.Name()
+		if !strings.HasSuffix(name, ".md") {
+			continue
+		}
+
+		fullPath := filepath.Join(contentPath, name)
+		content, err := os.ReadFile(fullPath)
+		if err != nil {
+			return nil, fmt.Errorf("failed to read %s: %w", fullPath, err)
+		}
+
+		files = append(files, ContentFile{
+			SourcePath: fullPath,
+			Name:       strings.TrimSuffix(name, ".md"),
+			Content:    string(content),
+		})
+	}
+
+	return files, nil
+}
+
+// markdownToHTML converts markdown content to HTML using goldmark
+func markdownToHTML(markdown string) (string, error) {
+	var buf bytes.Buffer
+	if err := goldmark.Convert([]byte(markdown), &buf); err != nil {
+		return "", err
+	}
+	return buf.String(), nil
+}

content/index.md

@@ -0,0 +1,13 @@
+# Welcome to Go-CV
+
+This is a sample markdown file for testing the Go-CV static site generator.
+
+## Features
+
+- Pure Go implementation
+- Markdown to HTML conversion
+- No external dependencies for PDF generation
+
+## About
+
+This project generates static HTML from markdown files in the `./content` directory.

go.mod

@@ -6,3 +6,5 @@ require (
 	github.com/gorilla/mux v1.8.1
 	gopkg.in/yaml.v2 v2.4.0
 )
+
+require github.com/yuin/goldmark v1.7.16 // indirect

go.sum

@@ -1,5 +1,7 @@
 github.com/gorilla/mux v1.8.1 h1:TuBL49tXwgrFYWhqrNgrUNEY92u81SPhu7sTdzQEiWY=
 github.com/gorilla/mux v1.8.1/go.mod h1:AKf9I4AEqPTmMytcMc0KkNouC66V3BtZ4qD5fmWSiMQ=
+github.com/yuin/goldmark v1.7.16 h1:n+CJdUxaFMiDUNnWC3dMWCIQJSkxH4uz3ZwQBkAlVNE=
+github.com/yuin/goldmark v1.7.16/go.mod h1:ip/1k0VRfGynBgxOz0yCqHrbZXhcjxyuS66Brc7iBKg=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY=

main.go

@@ -13,15 +13,49 @@ var APP_VERSION string = "latest"
 var COMMIT_ID string = "undefined"
 var ws *WebServer
 
-func main() {
-	// Create a channel to receive the OS signals
-	sc := make(chan os.Signal, 1)
-	signal.Notify(sc, syscall.SIGINT, syscall.SIGTERM)
+const (
+	contentPath = "./content"
+	outputPath  = "./output"
+)
 
+func main() {
 	// Initialize the WebService structure
 	ws = new(WebServer)
 	ws.Initialize()
 
+	// Determine mode based on command line argument
+	// No CLI flags - just check os.Args
+	if len(os.Args) > 1 && os.Args[1] == "serve" {
+		// Serve mode: Start HTTP server with file watching
+		runServeMode()
+	} else {
+		// CLI mode: Generate static files and exit
+		runCLIMode()
+	}
+}
+
+func runCLIMode() {
+	fmt.Println("Running in CLI mode...")
+	fmt.Printf("Reading content from: %s\n", contentPath)
+	fmt.Printf("Writing output to: %s\n", outputPath)
+
+	// Read content and generate output
+	err := generateOutput()
+	if err != nil {
+		fmt.Printf("Error generating output: %s\n", err)
+		os.Exit(1)
+	}
+
+	fmt.Println("Generation complete.")
+}
+
+func runServeMode() {
+	fmt.Println("Running in Serve mode...")
+
+	// Create a channel to receive the OS signals
+	sc := make(chan os.Signal, 1)
+	signal.Notify(sc, syscall.SIGINT, syscall.SIGTERM)
+
 	// Start the WebService in a separate goroutine
 	go ws.Start()