refactor: remove authentication module and integrate Better Auth

- Deleted the `autenticacao.ts` file to streamline the authentication process.
- Updated the `auth.ts` file to include new functions for user management and password updates.
- Modified the schema to enforce the presence of `authId` for users, ensuring integration with Better Auth.
- Refactored the seed process to create users with Better Auth integration, enhancing user management capabilities.
- Cleaned up the `usuarios.ts` file to utilize the new authentication functions and improve code clarity.

packages/backend/convex/auth.ts

@@ -2,8 +2,9 @@ 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 { mutation, MutationCtx, query, QueryCtx } from "./_generated/server";
 import { betterAuth } from "better-auth";
+import { v } from "convex/values";
 
 const siteUrl = process.env.SITE_URL!;
 
@@ -55,3 +56,52 @@ export const getCurrentUser = query({
     return user;
   },
 });
+
+export const getCurrentUserFunction = async (ctx: QueryCtx | MutationCtx) => {
+  const authUser = await authComponent.safeGetAuthUser(ctx as any);
+  if (!authUser) {
+    return;
+  }
+
+  const user = await ctx.db
+    .query("usuarios")
+    .withIndex("authId", (q) => q.eq("authId", authUser._id))
+    .unique();
+  if (!user) {
+    return;
+  }
+  return user;
+};
+
+export const createAuthUser = async (
+  ctx: MutationCtx,
+  args: { nome: string; email: string; password: string }
+) => {
+  const { auth, headers } = await authComponent.getAuth(createAuth, ctx as any);
+
+  const result = await auth.api.signUpEmail({
+    headers,
+    body: {
+      name: args.nome,
+      email: args.email,
+      password: args.password,
+    },
+  });
+
+  return result.user.id;
+};
+
+export const updatePassword = async (
+  ctx: MutationCtx,
+  args: { newPassword: string; currentPassword: string }
+) => {
+  const { auth, headers } = await authComponent.getAuth(createAuth, ctx as any);
+
+  await auth.api.changePassword({
+    headers,
+    body: {
+      currentPassword: args.currentPassword,
+      newPassword: args.newPassword,
+    },
+  });
+};