From 8a9c78d4317c9fe42b2cecf0948051a758c20f94 Mon Sep 17 00:00:00 2001
From: Maxim Lebedev <git@toby3d.me>
Date: Wed, 14 Feb 2024 23:43:17 +0600
Subject: [PATCH] :building_construction: Created resource HTTP delivery

---
 .../resource/delivery/http/resource_http.go   | 48 +++++++++++++++++++
 1 file changed, 48 insertions(+)
 create mode 100644 internal/resource/delivery/http/resource_http.go

diff --git a/internal/resource/delivery/http/resource_http.go b/internal/resource/delivery/http/resource_http.go
new file mode 100644
index 0000000..42faba3
--- /dev/null
+++ b/internal/resource/delivery/http/resource_http.go
@@ -0,0 +1,48 @@
+package http
+
+import (
+	"bytes"
+	"context"
+	"fmt"
+	"io"
+	"io/fs"
+	"net/http"
+
+	"source.toby3d.me/toby3d/home/internal/domain"
+	"source.toby3d.me/toby3d/home/internal/resource"
+)
+
+type Handler struct {
+	contentDir fs.FS
+	resources  resource.UseCase
+}
+
+func NewHandler(resources resource.UseCase, contentDir fs.FS) *Handler {
+	return &Handler{
+		contentDir: contentDir,
+		resources:  resources,
+	}
+}
+
+func (h *Handler) Handle(ctx context.Context, path string) (http.Handler, error) {
+	res, err := h.resources.Do(ctx, path)
+	if err != nil {
+		return nil, err
+	}
+
+	file, err := h.contentDir.Open(res.File.Filename())
+	if err != nil {
+		return nil, fmt.Errorf("cannot open resource: %w", err)
+	}
+	defer file.Close()
+
+	resBytes, err := io.ReadAll(file)
+	if err != nil {
+		return nil, fmt.Errorf("cannot read resource: %w", err)
+	}
+
+	// TODO(toby3d): ugly workaround, refactor that.
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		http.ServeContent(w, r, res.Name(), domain.ResourceModTime(res), bytes.NewReader(resBytes))
+	}), nil
+}