Name card almost done

wwwroot/core/welcome/nameCardCreator.js

@@ -29,13 +29,19 @@ export class NameCardCreator {
 
             const template = this.loadTemplate();
 
-            const avatar = await this.handleAvatar(avatarPath);
-            const messageBuffer = await this.getMessageBuffer(`Hello ${name}!`);
+            const avatarSize = 450;
+            const avatar = await this.handleAvatar(avatarPath, avatarSize);
+            const avatarPos = { x : 1500-(avatarSize/2), y : 100}
+
+            const messageWidth = 1500;
+            const messageHeight = 200;
+            const messageBuffer = await this.getMessageBuffer(`Hello ${name}!`, messageWidth, messageHeight);
+            const messagePos = { x : 1500-(messageWidth/2), y : avatarPos.y + 550}
 
             const result = await template
                 .composite([
-                    { input: avatar, top: 215, left: 275 },
-                    { input: messageBuffer, top: 400, left: 1300 }
+                    { input: avatar, top: avatarPos.y, left: avatarPos.x },
+                    { input: messageBuffer, top: messagePos.y, left: messagePos.x }
                 ])
                 .toFile("namecard.png")
 
@@ -50,69 +56,71 @@ export class NameCardCreator {
     /**
      *
      * @param avatarPath
+     * @param outputSize
      * @returns {Promise<Buffer<ArrayBufferLike>>}
      */
-    async handleAvatar(avatarPath) {
-        const avatarSize = 670;
+    async handleAvatar(avatarPath, outputSize) {
+        const avatarSize = outputSize;
         const borderSize = 8;
-        const radius = avatarSize / 2;
         const totalSize = avatarSize + borderSize * 2;
+        const avatarRadius = avatarSize / 2;
+
+        const maskBuffer = Buffer.from(`
+            <svg width="${avatarSize}" height="${avatarSize}" xmlns="http://www.w3.org/2000/svg">
+              <circle cx="${avatarRadius}" cy="${avatarRadius}" r="${avatarRadius}" fill="white"/>
+            </svg>
+          `);
 
         const avatarBuffer = await sharp(avatarPath)
             .resize(avatarSize, avatarSize, { fit: "cover" })
             .png()
             .toBuffer();
 
-        const maskSvg = Buffer.from(`
-            <svg width="${avatarSize}" height="${avatarSize}" xmlns="http://www.w3.org/2000/svg">
-              <circle cx="${radius}" cy="${radius}" r="${radius}" fill="white"/>
-            </svg>
-        `);
-
-        const roundedAvatar = await sharp(avatarBuffer)
-            .composite([{ input: maskSvg, blend: "dest-in" }])
+        const roundedAvatarBuffer = await sharp(avatarBuffer)
+            .composite([{ input: maskBuffer, blend: "dest-in" }])
             .png()
             .toBuffer();
 
-        const roundedBorder = Buffer.from(`
+        const backgroundBuffer = Buffer.from(`
             <svg width="${totalSize}" height="${totalSize}" xmlns="http://www.w3.org/2000/svg">
               <circle 
                 cx="${totalSize / 2}" 
                 cy="${totalSize / 2}" 
-              r="${radius + borderSize / 2}"
+                r="${avatarRadius}" 
                 stroke="#ffffff"
                 stroke-width="${borderSize}"
-              fill="none"
-            />
+                fill="white"/>
             </svg>
-        `)
+          `);
 
         return await sharp({
             create: {
                 width: totalSize,
                 height: totalSize,
                 channels: 4,
-                background: "#0000"
-            }
-        }).composite([
-                { input: roundedAvatar, top: 0, left: 0 },
-                { input: roundedBorder, top: borderSize, left: borderSize }
+                background: "#0000",
+            }})
+            .composite([
+                { input: backgroundBuffer, top: 0, left: 0 },
+                { input: roundedAvatarBuffer, top: borderSize, left: borderSize }
             ])
             .png()
             .toBuffer();
     }
 
-    async getMessageBuffer(message){
-        const messageSvg = this.getMessageSvg(message);
+    async getMessageBuffer(message, outputWidth, outputHeight){
+        const messageSvg = this.getMessageSvg(message, outputWidth, outputHeight);
         return Buffer.from(messageSvg, "utf-8");
     }
 
     /**
      *
      * @param message {string}
+     * @param outputWidth
+     * @param outputHeight
      * @returns {string}
      */
-    getMessageSvg(message) {
+    getMessageSvg(message, outputWidth, outputHeight) {
         const safeMessage =
             message
             .replace(/&/g, "&amp;")
@@ -120,7 +128,7 @@ export class NameCardCreator {
             .replace(/>/g, "&gt;");
 
         return `
-          <svg width="1500" height="200" xmlns="http://www.w3.org/2000/svg">
+          <svg width="${outputWidth}" height="${outputHeight}" xmlns="http://www.w3.org/2000/svg">
             <style>
               @font-face {
                 font-family: 'Fredoka';
@@ -129,7 +137,7 @@ export class NameCardCreator {
               .title {
                 font-family: 'Fredoka', sans-serif;
                 fill: #ede6e6;
-                font-size: 80px;
+                font-size: ${outputHeight/2}px;
                 font-weight: bold;
                 dominant-baseline: middle;
               }