refactor(blogo): move default plugins to their own file

blogo/blogo.go

@@ -21,6 +21,7 @@ import (
 	"io/fs"
 	"log/slog"
 	"net/http"
+	"strings"
 )
 
 type Options struct {
@@ -28,8 +29,9 @@ type Options struct {
 }
 
 type Blogo struct {
-	files   fs.FS
-	sources []SourcerPlugin
+	files fs.FS
+
+	sources   []SourcerPlugin
 
 	log   *slog.Logger
 	panic bool
@@ -55,6 +57,15 @@ func New(opts ...Options) *Blogo {
 	}
 }
 
+func (b *Blogo) Use(p Plugin) {
+	log := b.log.With(slog.String("plugin", p.Name()))
+
+	if p, ok := p.(SourcerPlugin); ok {
+		log.Debug("Added plugin", slog.String("type", "SourcerPlugin"))
+		b.sources = append(b.sources, p)
+	}
+}
+
 func (b *Blogo) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 	log := b.log.With(slog.String("path", r.URL.Path))
 
@@ -120,17 +131,15 @@ func (b *Blogo) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 	b.log.Debug("Finished responding file")
 }
 
-func (b *Blogo) Use(p Plugin) {
-	if p, ok := p.(SourcerPlugin); ok {
-		b.log.Debug("Added sourcer plugin", slog.String("plugin", p.Name()))
-		b.sources = append(b.sources, p)
-	}
-}
-
 func (b *Blogo) Init() error {
 	b.log.Debug("Initializing blogo")
 
-	fs, err := b.sourceFiles()
+	if len(b.sources) == 0 {
+		b.log.Debug("No SourcerPlugin found, using default one")
+		b.Use(&defaultSourcer{})
+	}
+
+	fs, err := b.sources[0].Source() // TOOD: Support for multiple sources (via another plugin or built-in, with prefixes or not)
 	if err != nil {
 		return errors.Join(errors.New("failed to source files"), err)
 	}
@@ -138,17 +147,3 @@ func (b *Blogo) Init() error {
 
 	return nil
 }
-
-type emptyFS struct{}
-
-func (f emptyFS) Open(name string) (fs.File, error) {
-	return nil, fs.ErrNotExist
-}
-
-func (b *Blogo) sourceFiles() (fs.FS, error) {
-	if len(b.sources) == 0 {
-		return emptyFS{}, nil
-	}
-
-	return b.sources[0].Source() // TODO: Support for multiple sources (with or without preffixes, first-read, etc etc)
-}

blogo/defaults.go

@@ -0,0 +1,23 @@
+package blogo
+
+import (
+	"io"
+	"io/fs"
+)
+
+type defaultSourcer struct{}
+
+func (p *defaultSourcer) Name() string {
+	return "blogo-defaults-sourcer"
+}
+
+func (p *defaultSourcer) Source() (fs.FS, error) {
+	return emptyFS{}, nil
+}
+
+type emptyFS struct{}
+
+func (f emptyFS) Open(name string) (fs.File, error) {
+	return nil, fs.ErrNotExist
+}
+