fix: update auto-gen OG images to allow special char usage in title

Update the implementation of og image generation code to allow special character usage in title. fix #103, fix #88
2026-08-14 11:29:33 +08:00 · 2023-09-15 22:18:02 +06:30
parent 6b8bba1612
commit 1933a6beae
4 changed files with 43 additions and 30 deletions
@@ -0,0 +1,177 @@
+import satori, { type SatoriOptions } from "satori";
+import { SITE } from "@config";
+import { writeFile } from "node:fs/promises";
+import { Resvg } from "@resvg/resvg-js";
+import { getCollection } from "astro:content";
+
+const fetchFonts = async () => {
+  // Regular Font
+  const fontFileRegular = await fetch(
+    "https://www.1001fonts.com/download/font/ibm-plex-mono.regular.ttf"
+  );
+  const fontRegular: ArrayBuffer = await fontFileRegular.arrayBuffer();
+
+  // Bold Font
+  const fontFileBold = await fetch(
+    "https://www.1001fonts.com/download/font/ibm-plex-mono.bold.ttf"
+  );
+  const fontBold: ArrayBuffer = await fontFileBold.arrayBuffer();
+
+  return { fontRegular, fontBold };
+};
+
+const { fontRegular, fontBold } = await fetchFonts();
+
+const ogImage = (text: string) => {
+  return (
+    <div
+      style={{
+        background: "#fefbfb",
+        width: "100%",
+        height: "100%",
+        display: "flex",
+        alignItems: "center",
+        justifyContent: "center",
+      }}
+    >
+      <div
+        style={{
+          position: "absolute",
+          top: "-1px",
+          right: "-1px",
+          border: "4px solid #000",
+          background: "#ecebeb",
+          opacity: "0.9",
+          borderRadius: "4px",
+          display: "flex",
+          justifyContent: "center",
+          margin: "2.5rem",
+          width: "88%",
+          height: "80%",
+        }}
+      />
+
+      <div
+        style={{
+          border: "4px solid #000",
+          background: "#fefbfb",
+          borderRadius: "4px",
+          display: "flex",
+          justifyContent: "center",
+          margin: "2rem",
+          width: "88%",
+          height: "80%",
+        }}
+      >
+        <div
+          style={{
+            display: "flex",
+            flexDirection: "column",
+            justifyContent: "space-between",
+            margin: "20px",
+            width: "90%",
+            height: "90%",
+          }}
+        >
+          <p
+            style={{
+              fontSize: 72,
+              fontWeight: "bold",
+              maxHeight: "84%",
+              overflow: "hidden",
+            }}
+          >
+            {text}
+          </p>
+          <div
+            style={{
+              display: "flex",
+              justifyContent: "space-between",
+              width: "100%",
+              marginBottom: "8px",
+              fontSize: 28,
+            }}
+          >
+            <span>
+              by{" "}
+              <span
+                style={{
+                  color: "transparent",
+                }}
+              >
+                "
+              </span>
+              <span style={{ overflow: "hidden", fontWeight: "bold" }}>
+                {SITE.author}
+              </span>
+            </span>
+
+            <span style={{ overflow: "hidden", fontWeight: "bold" }}>
+              {SITE.title}
+            </span>
+          </div>
+        </div>
+      </div>
+    </div>
+  );
+};
+
+const options: SatoriOptions = {
+  width: 1200,
+  height: 630,
+  embedFont: true,
+  fonts: [
+    {
+      name: "IBM Plex Mono",
+      data: fontRegular,
+      weight: 400,
+      style: "normal",
+    },
+    {
+      name: "IBM Plex Mono",
+      data: fontBold,
+      weight: 600,
+      style: "normal",
+    },
+  ],
+};
+
+const generateOgImages = async () => {
+  const postImportResult = await getCollection(
+    "blog",
+    ({ data }) => !data.draft
+  );
+  const posts = Object.values(postImportResult).filter(
+    ({ data }) => !data.ogImage
+  );
+
+  const imageGenerationPromises = posts.map(async post => {
+    const svg = await satori(ogImage(post.data.title), options);
+
+    // render png in production mode
+    if (import.meta.env.MODE === "production") {
+      const resvg = new Resvg(svg);
+      const pngData = resvg.render();
+      const pngBuffer = pngData.asPng();
+
+      const outputImage = `${post.slug}.png`;
+
+      const LIGHT_BLUE = "\x1b[94m";
+      const DARK_GRAY = "\x1b[30m";
+      const RESET = "\x1b[0m";
+      console.info(
+        `  ${LIGHT_BLUE}└─${RESET} output png image:`,
+        `${DARK_GRAY}/${outputImage}${RESET}`
+      );
+
+      await writeFile(`./dist/${outputImage}`, pngBuffer);
+    }
+  });
+
+  // Wait for all image generation operations to complete
+  await Promise.all(imageGenerationPromises);
+
+  return null;
+};
+
+export default generateOgImages;