1 files changed, 89 insertions, 0 deletions
diff --git a/nuldoc-src/components/page_layout.ts b/nuldoc-src/components/page_layout.ts
new file mode 100644
index 0000000..d76e3b2
--- /dev/null
+++ b/nuldoc-src/components/page_layout.ts
@@ -0,0 +1,89 @@
+import { crypto, toHashString } from "std/crypto/mod.ts";
+import { join } from "std/path/mod.ts";
+import { Config } from "../config.ts";
+import { el, Element, text } from "../dom.ts";
+
+type Params = {
+  metaCopyrightYear: number;
+  metaDescription: string;
+  metaKeywords: string[];
+  metaTitle: string;
+  requiresSyntaxHighlight: boolean;
+};
+
+export async function pageLayout(
+  {
+    metaCopyrightYear,
+    metaDescription,
+    metaKeywords,
+    metaTitle,
+    requiresSyntaxHighlight,
+  }: Params,
+  body: Element,
+  config: Config,
+): Promise<Element> {
+  const head = el(
+    "head",
+    [],
+    metaElement([["charset", "UTF-8"]]),
+    metaElement([["name", "viewport"], [
+      "content",
+      "width=device-width, initial-scale=1.0",
+    ]]),
+    metaElement([["name", "author"], ["content", config.blog.author]]),
+    metaElement([["name", "copyright"], [
+      "content",
+      `&copy; ${metaCopyrightYear} ${config.blog.author}`,
+    ]]),
+    metaElement([["name", "description"], [
+      "content",
+      metaDescription,
+    ]]),
+    ...(metaKeywords.length === 0 ? [] : [
+      metaElement([["name", "keywords"], [
+        "content",
+        metaKeywords.join(","),
+      ]]),
+    ]),
+    linkElement("icon", "/favicon.svg", "image/svg+xml"),
+    el("title", [], text(`${metaTitle} | ${config.blog.siteName}`)),
+    await stylesheetLinkElement("/style.css", config),
+    ...(
+      requiresSyntaxHighlight
+        ? [await stylesheetLinkElement("/hl.css", config)]
+        : []
+    ),
+  );
+  return el(
+    "html",
+    [["lang", "ja-JP"]],
+    head,
+    body,
+  );
+}
+
+async function stylesheetLinkElement(
+  fileName: string,
+  config: Config,
+): Promise<Element> {
+  const filePath = join(Deno.cwd(), config.locations.staticDir, fileName);
+  const content = (await Deno.readFile(filePath)).buffer;
+  const hash = toHashString(await crypto.subtle.digest("MD5", content), "hex");
+  return el("link", [["rel", "stylesheet"], ["href", `${fileName}?h=${hash}`]]);
+}
+
+function metaElement(attrs: [string, string][]): Element {
+  return el("meta", attrs);
+}
+
+function linkElement(
+  rel: string,
+  href: string,
+  type: string | null,
+): Element {
+  const attrs: [string, string][] = [["rel", rel], ["href", href]];
+  if (type !== null) {
+    attrs.push(["type", type]);
+  }
+  return el("link", attrs);
+}