👔 Created simple static use case implementation

internal/static/usecase/static_ucase.go

@@ -0,0 +1,37 @@
+package usecase
+
+import (
+	"context"
+	"fmt"
+	"io/fs"
+	"path"
+	"strings"
+
+	"source.toby3d.me/toby3d/home/internal/domain"
+	"source.toby3d.me/toby3d/home/internal/static"
+)
+
+type staticUseCase struct {
+	statics static.Repository
+}
+
+func NewStaticUseCase(statics static.Repository) static.UseCase {
+	return &staticUseCase{
+		statics: statics,
+	}
+}
+
+func (ucase *staticUseCase) Do(ctx context.Context, p string) (*domain.File, error) {
+	p = strings.TrimPrefix(path.Clean(p), "/")
+
+	if ext := path.Ext(p); ext == ".html" || ext == ".md" {
+		return nil, fs.ErrNotExist
+	}
+
+	f, err := ucase.statics.Get(ctx, p)
+	if err != nil {
+		return nil, fmt.Errorf("cannot get static file: %w", err)
+	}
+
+	return f, nil
+}