feat: Add custom root directory (#134) (#135)

Co-authored-by: Roj <[email protected]>

Author: j-tag

blog.tsx

@@ -180,6 +180,9 @@ export async function configureBlog(
     throw new Error("Cannot run blog from a remote URL.");
   }
 
+  // Override blog directory, if `rootDirectory` is provided
+  directory = settings?.rootDirectory ?? directory;
+
   const state: BlogState = {
     directory,
     ...settings,

blog_test.ts

@@ -364,3 +364,40 @@ Deno.test("Plaintext response", async () => {
   const body = await resp.text();
   assert(body.startsWith("It was popularised in the 1960s"));
 });
+
+Deno.test(
+  "custom root directory",
+  async () => {
+    const blogState = await configureBlog(BLOG_URL, false, {
+      author: "The author",
+      title: "Test blog",
+      description: "This is some description.",
+      lang: "en-GB",
+      rootDirectory: join(TESTDATA_PATH, "./customRootDir"),
+    });
+    const customRootDirectoryBlogHandler = createBlogHandler(blogState);
+    const customRootDirectoryTestHandler = (req: Request) => {
+      return customRootDirectoryBlogHandler(req, CONN_INFO);
+    };
+    const resp = await customRootDirectoryTestHandler(
+      new Request("https://blog.deno.dev/custom"),
+    );
+    assert(resp);
+    assertEquals(resp.status, 200);
+    assertEquals(resp.headers.get("content-type"), "text/html; charset=utf-8");
+    const body = await resp.text();
+    assertStringIncludes(body, `Custom post`);
+    const respStaticFile = await customRootDirectoryTestHandler(
+      new Request("https://blog.deno.dev/cat_custom_path.png"),
+    );
+    assertEquals(respStaticFile.status, 200);
+    assertEquals(respStaticFile.headers.get("content-type"), "image/png");
+    const bytes = new Uint8Array(await respStaticFile.arrayBuffer());
+    assertEquals(
+      bytes,
+      await Deno.readFile(
+        join(TESTDATA_PATH, "./customRootDir/cat_custom_path.png"),
+      ),
+    );
+  },
+);

testdata/customRootDir/cat_custom_path.png

@@ -0,0 +1,9 @@
+---
+title: Custom post
+publish_date: 2022-03-20
+abstract: This is the first post with a custom root directory.
+---
+
+It was popularised in the 1960s with the release of Letraset sheets containing
+Lorem Ipsum passages, and more recently with desktop publishing software like
+Aldus PageMaker including versions of Lorem Ipsum.

testdata/customRootDir/posts/custom.md

@@ -78,6 +78,8 @@ export interface BlogSettings {
   hostname?: string;
   /** Whether to display readtime or not */
   readtime?: boolean;
+  /** The root directory of the blog contents */
+  rootDirectory?: string;
 }
 
 export interface BlogState extends BlogSettings {