✨feature: Wire up blog section
This commit is contained in:
Keith Solomon
225
main.go
225
main.go
@@ -1,6 +1,7 @@
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package main
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import (
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"bytes"
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"fmt"
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"html/template"
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"io/ioutil"
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@@ -10,102 +11,222 @@ import (
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"time"
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"github.com/russross/blackfriday/v2"
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"gopkg.in/yaml.v3"
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)
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// NavItem represents a link in the navigation menu
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// NavItem represents a navigation link
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type NavItem struct {
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Title string
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URL string
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}
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// PageMeta holds front matter metadata
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type PageMeta struct {
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Title string `yaml:"title"`
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Description string `yaml:"description"`
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Date string `yaml:"date"`
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Slug string // we'll set this ourselves from filename
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}
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func main() {
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contentDir := "./content"
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outputDir := "./public"
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templateFile := "./templates/layout.html"
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tpl, err := parseTemplate(templateFile)
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tpl, err := template.ParseFiles(templateFile)
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if err != nil {
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fmt.Printf("Template parsing error: %v\n", err)
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return
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}
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files, err := readContentFiles(contentDir)
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files, err := ioutil.ReadDir(contentDir)
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if err != nil {
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fmt.Printf("Failed to read content directory: %v\n", err)
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return
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}
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nav := buildNavigation(files)
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// Collect nav info early
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var nav []NavItem
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for _, file := range files {
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if filepath.Ext(file.Name()) == ".md" {
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err := generateHTML(file, contentDir, outputDir, tpl, nav)
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if err != nil {
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fmt.Printf("Error generating HTML for %s: %v\n", file.Name(), err)
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name := strings.TrimSuffix(file.Name(), filepath.Ext(file.Name()))
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url := "/"
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if name != "index" {
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url = "/" + name + "/"
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}
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nav = append(nav, NavItem{
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Title: strings.Title(name),
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URL: url,
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})
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}
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}
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// Add blog to the main nav
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nav = append(nav, NavItem{
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Title: "Blog",
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URL: "/blog/",
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})
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// Generate index.html for each static page markdown file
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for _, file := range files {
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if filepath.Ext(file.Name()) != ".md" {
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continue
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}
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name := strings.TrimSuffix(file.Name(), filepath.Ext(file.Name()))
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mdPath := filepath.Join(contentDir, file.Name())
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rawContent, err := ioutil.ReadFile(mdPath)
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if err != nil {
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fmt.Printf("Failed to read %s: %v\n", file.Name(), err)
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continue
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}
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meta, content := parseFrontMatter(rawContent)
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htmlContent := blackfriday.Run(content)
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// Determine output path
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var outPath string
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if name == "index" {
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outPath = filepath.Join(outputDir, "index.html")
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} else {
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subDir := filepath.Join(outputDir, name)
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os.MkdirAll(subDir, os.ModePerm)
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outPath = filepath.Join(subDir, "index.html")
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}
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outFile, err := os.Create(outPath)
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if err != nil {
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fmt.Printf("Failed to create %s: %v\n", outPath, err)
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continue
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}
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// Fall back to filename for title if none provided
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if meta.Title == "" {
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meta.Title = strings.Title(name)
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}
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data := map[string]interface{}{
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"Title": meta.Title,
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"Description": meta.Description,
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"Date": meta.Date,
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"Content": template.HTML(htmlContent),
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"Nav": nav,
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"Year": time.Now().Year(),
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}
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err = tpl.Execute(outFile, data)
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if err != nil {
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fmt.Printf("Template execution failed for %s: %v\n", file.Name(), err)
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continue
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}
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fmt.Printf("Generated: %s\n", outPath)
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}
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// Generate blog index
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var blogPosts []PageMeta
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blogDir := filepath.Join(contentDir, "blog")
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blogFiles, _ := ioutil.ReadDir(blogDir)
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for _, file := range blogFiles {
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if filepath.Ext(file.Name()) != ".md" {
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continue
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}
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slug := strings.TrimSuffix(file.Name(), filepath.Ext(file.Name()))
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blogPath := filepath.Join(blogDir, file.Name())
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rawContent, err := ioutil.ReadFile(blogPath)
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if err != nil {
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fmt.Printf("Failed to read blog post %s: %v\n", file.Name(), err)
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continue
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}
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meta, content := parseFrontMatter(rawContent)
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html := blackfriday.Run(content)
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meta.Slug = slug
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if meta.Title == "" {
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meta.Title = strings.Title(slug)
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}
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outPath := filepath.Join(outputDir, "blog", slug, "index.html")
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os.MkdirAll(filepath.Dir(outPath), os.ModePerm)
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outFile, err := os.Create(outPath)
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if err != nil {
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fmt.Printf("Failed to create blog file %s: %v\n", outPath, err)
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continue
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}
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err = tpl.Execute(outFile, map[string]interface{}{
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"Title": meta.Title,
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"Description": meta.Description,
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"Date": meta.Date,
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"Content": template.HTML(html),
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"Nav": nav,
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"Year": time.Now().Year(),
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})
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if err != nil {
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fmt.Printf("Template error for blog post %s: %v\n", file.Name(), err)
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continue
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}
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blogPosts = append(blogPosts, meta)
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}
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err = buildBlogIndex(blogPosts, tpl, outputDir, nav)
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if err != nil {
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fmt.Println("Failed to build blog index:", err)
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}
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fmt.Println("✅ Site generation complete.")
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}
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func parseTemplate(templateFile string) (*template.Template, error) {
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return template.ParseFiles(templateFile)
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}
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// parseFrontMatter splits raw markdown into meta + content
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func parseFrontMatter(raw []byte) (PageMeta, []byte) {
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var meta PageMeta
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func readContentFiles(contentDir string) ([]os.FileInfo, error) {
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return ioutil.ReadDir(contentDir)
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}
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// Normalize line endings
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raw = bytes.ReplaceAll(raw, []byte("\r\n"), []byte("\n"))
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func buildNavigation(files []os.FileInfo) []NavItem {
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var nav []NavItem
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for _, file := range files {
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if filepath.Ext(file.Name()) == ".md" {
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name := strings.TrimSuffix(file.Name(), filepath.Ext(file.Name()))
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title := strings.Title(name)
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url := "/"
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if name != "index" {
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url = "/" + name + "/"
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// Only try to parse if the file starts with "---\n"
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if bytes.HasPrefix(raw, []byte("---\n")) {
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// Split after the first two "---\n" lines
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parts := bytes.SplitN(raw, []byte("---\n"), 3)
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if len(parts) >= 3 {
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// parts[0] = empty (before first ---)
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// parts[1] = YAML content
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// parts[2] = remaining markdown content
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err := yaml.Unmarshal(parts[1], &meta)
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if err != nil {
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fmt.Printf("⚠️ Failed to parse front matter: %v\n", err)
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}
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nav = append(nav, NavItem{Title: title, URL: url})
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return meta, parts[2]
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}
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}
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return nav
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// If there's no front matter, return raw as-is
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return meta, raw
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}
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func generateHTML(file os.FileInfo, contentDir, outputDir string, tpl *template.Template, nav []NavItem) error {
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name := strings.TrimSuffix(file.Name(), filepath.Ext(file.Name()))
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title := strings.Title(name)
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mdPath := filepath.Join(contentDir, file.Name())
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mdContent, err := ioutil.ReadFile(mdPath)
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if err != nil {
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return fmt.Errorf("failed to read %s: %w", file.Name(), err)
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}
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htmlContent := blackfriday.Run(mdContent)
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var outPath string
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if name == "index" {
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outPath = filepath.Join(outputDir, "index.html")
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} else {
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subDir := filepath.Join(outputDir, name)
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os.MkdirAll(subDir, os.ModePerm)
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outPath = filepath.Join(subDir, "index.html")
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}
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// buildBlogIndex generates the blog index page
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func buildBlogIndex(posts []PageMeta, tpl *template.Template, outputDir string, nav []NavItem) error {
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outPath := filepath.Join(outputDir, "blog", "index.html")
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os.MkdirAll(filepath.Dir(outPath), os.ModePerm)
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outFile, err := os.Create(outPath)
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if err != nil {
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return fmt.Errorf("failed to create %s: %w", outPath, err)
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return err
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}
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defer outFile.Close()
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data := map[string]interface{}{
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"Content": template.HTML(htmlContent),
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"Title": title,
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"Nav": nav,
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"Year": time.Now().Year(),
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"Date": time.Now().Format("January 2, 2006"),
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"Title": "Go SSG - Blog",
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"Posts": posts,
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"Nav": nav,
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"Year": time.Now().Year(),
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}
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return tpl.Execute(outFile, data)
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