commit 47e4fb6ddb6cfbd0febc10c0fcbe8f567c84ba07
Author: Nhân <hi@imnhan.com>
Date:   Sun Jul 9 16:00:30 2023 +0700

    implement -new

diff --git a/main.go b/main.go
index 7b8f9ad..909c968 100644
--- a/main.go
+++ b/main.go
@@ -6,6 +6,7 @@
 	"fmt"
 	"html/template"
 	"io/fs"
+	"log"
 	"net/http"
 	"path/filepath"
 	"sort"
@@ -24,11 +25,21 @@
 const FEED_PATH = "feed.xml"
 
 func main() {
-	var port, folder string
+	var port, folder, new string
+	flag.StringVar(&new, "new", "", "Path for new site to make")
 	flag.StringVar(&port, "port", "3338", "Port for local preview server")
 	flag.StringVar(&folder, "folder", "www", "Web folder")
 	flag.Parse()
 
+	if new != "" {
+		fmt.Println("Making new site at", new)
+		err := makeSite(new, newSiteMetadata())
+		if err != nil {
+			log.Fatal(err)
+		}
+		return
+	}
+
 	absolutePath, err := filepath.Abs(folder)
 	if err != nil {
 		panic(err)
@@ -62,9 +73,17 @@ func main() {
 
 func regenerate(fsys writablefs.FS) {
 	defer timer("Took %s")()
+
 	site := readSiteMetadata(fsys)
 	articles := findArticles(fsys)
 
+	if len(articles) == 0 {
+		fmt.Println("No articles found.")
+		fsys.RemoveAll("index.html")
+		fsys.RemoveAll(FEED_PATH)
+		return
+	}
+
 	// Sort articles, newest first
 	sort.Slice(articles, func(i int, j int) bool {
 		return articles[i].PostedAt.Compare(articles[j].PostedAt) > 0
@@ -121,12 +140,16 @@ type SiteMetadata struct {
 	}
 }
 
-func readSiteMetadata(fsys writablefs.FS) SiteMetadata {
-	sm := SiteMetadata{
+func newSiteMetadata() SiteMetadata {
+	return SiteMetadata{
 		HomePath:     "/",
 		ShowFooter:   true,
 		GenerateHome: true,
 	}
+}
+
+func readSiteMetadata(fsys writablefs.FS) SiteMetadata {
+	sm := newSiteMetadata()
 	_, err := toml.DecodeFS(fsys, SITE_FILENAME, &sm)
 	if err != nil {
 		panic(err)
diff --git a/makesite.go b/makesite.go
new file mode 100644
index 0000000..ac9b60d
--- /dev/null
+++ b/makesite.go
@@ -0,0 +1,65 @@
+package main
+
+import (
+	"embed"
+	_ "embed"
+	"fmt"
+	"io/fs"
+	"io/ioutil"
+	"os"
+	"path/filepath"
+
+	"github.com/BurntSushi/toml"
+)
+
+//go:embed theme
+var defaultTheme embed.FS
+
+func makeSite(path string, meta SiteMetadata) error {
+	err := os.MkdirAll(path, 0755)
+	if err != nil {
+		return fmt.Errorf("make site: %w", err)
+	}
+
+	metaFilePath := filepath.Join(path, SITE_FILENAME)
+	metaFile, err := os.Create(metaFilePath)
+	if err != nil {
+		return fmt.Errorf("create site metadata: %w", err)
+	}
+	defer metaFile.Close()
+
+	metaEncoder := toml.NewEncoder(metaFile)
+	err = metaEncoder.Encode(meta)
+	if err != nil {
+		return fmt.Errorf("write site metadata: %w", err)
+	}
+
+	copyTheme(defaultTheme, path)
+	return nil
+}
+
+func copyTheme(src fs.FS, dst string) error {
+	fs.WalkDir(src, ".", func(path string, d fs.DirEntry, err error) error {
+		dstPath := filepath.Join(dst, path)
+
+		if d.IsDir() {
+			os.MkdirAll(dstPath, 0755)
+			return nil
+		}
+
+		content, err := fs.ReadFile(src, path)
+		if err != nil {
+			return fmt.Errorf("read source file: %w", err)
+		}
+
+		err = ioutil.WriteFile(dstPath, content, 0644)
+		if err != nil {
+			return fmt.Errorf("write dest file: %w", err)
+		}
+
+		return nil
+	})
+
+	os.Rename(filepath.Join(dst, "theme"), filepath.Join(dst, "_theme"))
+	return nil
+}
diff --git a/www/_theme/base.css b/theme/base.css
similarity index 100%
rename from www/_theme/base.css
rename to theme/base.css
diff --git a/www/_theme/base.tmpl b/theme/base.tmpl
similarity index 100%
rename from www/_theme/base.tmpl
rename to theme/base.tmpl
diff --git a/www/_theme/feed.svg b/theme/feed.svg
similarity index 100%
rename from www/_theme/feed.svg
rename to theme/feed.svg
diff --git a/www/_theme/home.tmpl b/theme/home.tmpl
similarity index 100%
rename from www/_theme/home.tmpl
rename to theme/home.tmpl
diff --git a/www/_theme/post.css b/theme/post.css
similarity index 100%
rename from www/_theme/post.css
rename to theme/post.css
diff --git a/www/_theme/post.tmpl b/theme/post.tmpl
similarity index 100%
rename from www/_theme/post.tmpl
rename to theme/post.tmpl
diff --git a/watcher.go b/watcher.go
index fe68698..0e2baf8 100644
--- a/watcher.go
+++ b/watcher.go
@@ -26,7 +26,7 @@ func WatchLocalFS(fsys writablefs.FS, callback func()) (Close func() error) {
 	}
 
 	fs.WalkDir(fsys, ".", func(path string, d fs.DirEntry, err error) error {
-		if !d.IsDir() || shouldIgnore(path) {
+		if !d.IsDir() || (shouldIgnore(path) && path != ".") {
 			return nil
 		}
 
diff --git a/writablefs/writablefs.go b/writablefs/writablefs.go
index 2451f8a..d99a1f6 100644
--- a/writablefs/writablefs.go
+++ b/writablefs/writablefs.go
@@ -9,6 +9,7 @@
 type FS interface {
 	fs.FS
 	WriteFile(path string, content []byte) error
+	RemoveAll(path string) error
 	Path() string
 }
 
@@ -22,6 +23,10 @@ func WriteDirFS(path string) FS {
 func (w writeDirFS) Open(name string) (fs.File, error) {
 	return os.DirFS(string(w)).Open(name)
 }
+func (w writeDirFS) RemoveAll(path string) error {
+	fullPath := filepath.Join(string(w), path)
+	return os.RemoveAll(fullPath)
+}
 
 func (w writeDirFS) WriteFile(path string, content []byte) error {
 	fullPath := filepath.Join(string(w), path)
diff --git a/www/_theme b/www/_theme
new file mode 120000
index 0000000..1c50727
--- /dev/null
+++ b/www/_theme
@@ -0,0 +1 @@
+../theme
\ No newline at end of file