✨ feat: Add api (#112)

Add the api route -> https://nexus.nestri.workers.dev/

packages/api/src/utils/create-avatar.tsx

@@ -0,0 +1,33 @@
+export const createAvatarSvg = (size: number, gradient: { fromColor: string, toColor: string }, fileType?: string, text?: string) => (
+    <svg
+        width={size}
+        height={size}
+        viewBox={`0 0 ${size} ${size}`}
+        version="1.1"
+        xmlns="http://www.w3.org/2000/svg"
+    >
+        <g>
+            <defs>
+                <linearGradient id="gradient" x1="0" y1="0" x2="1" y2="1">
+                    <stop offset="0%" stopColor={gradient.fromColor} />
+                    <stop offset="100%" stopColor={gradient.toColor} />
+                </linearGradient>
+            </defs>
+            <rect fill="url(#gradient)" x="0" y="0" width={size} height={size} />
+            {fileType === "svg" && text && (
+                <text
+                    x="50%"
+                    y="50%"
+                    alignmentBaseline="central"
+                    dominantBaseline="central"
+                    textAnchor="middle"
+                    fill="#fff"
+                    fontFamily="sans-serif"
+                    fontSize={(size * 0.9) / text.length}
+                >
+                    {text}
+                </text>
+            )}
+        </g>
+    </svg>
+);

packages/api/src/utils/gradient.ts

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+import color from "tinycolor2";
+
+function fnv1a(str: string) {
+    let hash = 0x811c9dc5;
+    for (let i = 0; i < str.length; i++) {
+        hash ^= str.charCodeAt(i);
+        hash += (hash << 1) + (hash << 4) + (hash << 7) + (hash << 8) + (hash << 24);
+    }
+    return hash >>> 0;
+}
+
+export function generateGradient(username: string) {
+    const hash = fnv1a(username);
+    const hue1 = hash % 360;
+    const hue2 = (hash >> 16) % 360;
+
+    const c1 = color({ h: hue1, s: 0.8, l: 0.6 });
+    const c2 = color({ h: hue2, s: 0.8, l: 0.5 });
+
+    return {
+        fromColor: c1.toHexString(),
+        toColor: c2.toHexString(),
+    };
+}

packages/api/src/utils/index.ts

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+export * from './gradient'
+export * from './create-avatar'