initial better auth config

packages/backend/convex/auth.ts

@@ -0,0 +1,53 @@
+import { createClient, type GenericCtx } from "@convex-dev/better-auth";
+import { convex } from "@convex-dev/better-auth/plugins";
+import { components } from "./_generated/api";
+import { type DataModel } from "./_generated/dataModel";
+import { query } from "./_generated/server";
+import { betterAuth } from "better-auth";
+import authSchema from "./betterAuth/schema";
+
+const siteUrl = process.env.SITE_URL!;
+
+// The component client has methods needed for integrating Convex with Better Auth,
+// as well as helper methods for general use.
+export const authComponent = createClient<DataModel, typeof authSchema>(
+  components.betterAuth,
+  {
+    local: {
+      schema: authSchema,
+    },
+  }
+);
+
+export const createAuth = (
+  ctx: GenericCtx<DataModel>,
+  { optionsOnly } = { optionsOnly: false }
+) => {
+  return betterAuth({
+    // disable logging when createAuth is called just to generate options.
+    // this is not required, but there's a lot of noise in logs without it.
+    logger: {
+      disabled: optionsOnly,
+    },
+    baseURL: siteUrl,
+    database: authComponent.adapter(ctx),
+    // Configure simple, non-verified email/password to get started
+    emailAndPassword: {
+      enabled: true,
+      requireEmailVerification: false,
+    },
+    plugins: [
+      // The Convex plugin is required for Convex compatibility
+      convex(),
+    ],
+  });
+};
+
+// Example function for getting the current user
+// Feel free to edit, omit, etc.
+export const getCurrentUser = query({
+  args: {},
+  handler: async (ctx) => {
+    return authComponent.getAuthUser(ctx);
+  },
+});