Add Better Auth admin authentication

convex/betterAuth/auth.ts

@@ -0,0 +1,59 @@
+import { createClient } from "@convex-dev/better-auth";
+import { convex } from "@convex-dev/better-auth/plugins";
+import type { GenericCtx } from "@convex-dev/better-auth";
+import { betterAuth, type BetterAuthOptions } from "better-auth/minimal";
+import type { FunctionReference } from "convex/server";
+
+import { components } from "../_generated/api";
+import type { DataModel } from "../_generated/dataModel";
+import authConfig from "../auth.config";
+import { getBetterAuthServerConfig } from "./env";
+import schema from "./schema";
+
+type BetterAuthComponentApi = {
+  adapter: {
+    create: FunctionReference<"mutation", "internal">;
+    findOne: FunctionReference<"query", "internal">;
+    findMany: FunctionReference<"query", "internal">;
+    updateOne: FunctionReference<"mutation", "internal">;
+    updateMany: FunctionReference<"mutation", "internal">;
+    deleteOne: FunctionReference<"mutation", "internal">;
+    deleteMany: FunctionReference<"mutation", "internal">;
+  };
+};
+
+const componentsWithAuth = components as {
+  betterAuth: BetterAuthComponentApi;
+};
+
+export const authComponent = createClient<DataModel, typeof schema>(
+  componentsWithAuth.betterAuth,
+  {
+    local: { schema },
+    verbose: false,
+  },
+);
+
+export const createAuthOptions = (
+  ctx: GenericCtx<DataModel>,
+  options: { allowMissingSecret?: boolean } = {},
+) => {
+  const { appUrl, secret } = getBetterAuthServerConfig(process.env, options);
+
+  return {
+    appName: "WebDev Pipeline",
+    baseURL: appUrl,
+    secret,
+    database: authComponent.adapter(ctx),
+    emailAndPassword: {
+      enabled: true,
+      disableSignUp: true,
+      requireEmailVerification: false,
+    },
+    plugins: [convex({ authConfig })],
+  } satisfies BetterAuthOptions;
+};
+
+export const createAuth = (ctx: GenericCtx<DataModel>) => {
+  return betterAuth(createAuthOptions(ctx));
+};