feat(templates): add helper for template source URL

src/lib/helpers/templateSource.ts

@@ -0,0 +1,32 @@
+export type Template = {
+  key?: string; // template slug, e.g. "magic-portfolio"
+  frameworks?: Array<{ 
+    key?: string;
+    providerRootDirectory?: string;
+  }>; // e.g. [{ key: "nextjs", providerRootDirectory: "./nextjs/magic-portfolio" }]
+  providerOwner?: string; // e.g. "appwrite"
+  providerRepositoryId?: string; // e.g. "templates-for-sites" or "template-for-store"
+  repository?: string; // if API already returns full URL, use it
+  repoUrl?: string;    // alias some builds may use
+  source?: string;     // alias some builds may use
+};
+
+export function getTemplateSourceUrl(template: Template): string | null {
+  // 1) Prefer a direct URL if the API already provides it
+  const direct = template.repository || template.repoUrl || template.source;
+  if (direct) return direct;
+
+  // 2) Ensure we have the parts to build the GitHub URL
+  const owner = template.providerOwner || "appwrite";
+  const repo = template.providerRepositoryId || "templates-for-sites";
+  const rootDir = template.frameworks?.[0]?.providerRootDirectory ?? "./";
+
+  // strip leading "./"
+  const cleanDir = rootDir.startsWith("./") ? rootDir.slice(2) : rootDir;
+
+  if (!cleanDir || cleanDir === "") {
+    return `https://github.com/${owner}/${repo}/tree/main`;
+  }
+
+  return `https://github.com/${owner}/${repo}/tree/main/${cleanDir}`;
+}