Feat/navigate to signup if email does not exist (#540)

* Add userExists route

* Fix demo mode for login

* Improve sign in/up flow

* Remove redundant password length constraint

* Fix test

server/src/core/auth/dto/challenge.input.ts

@@ -1,12 +1,5 @@
 import { ArgsType, Field } from '@nestjs/graphql';
-import {
-  IsEmail,
-  IsNotEmpty,
-  IsString,
-  Matches,
-  MinLength,
-} from 'class-validator';
-import { PASSWORD_REGEX } from '../auth.util';
+import { IsEmail, IsNotEmpty, IsString, MinLength } from 'class-validator';
 
 @ArgsType()
 export class ChallengeInput {
@@ -18,7 +11,5 @@ export class ChallengeInput {
   @Field(() => String)
   @IsNotEmpty()
   @IsString()
-  @MinLength(8)
-  @Matches(PASSWORD_REGEX, { message: 'password too weak' })
   password: string;
 }

server/src/core/auth/dto/user-exists.entity.ts

@@ -0,0 +1,7 @@
+import { Field, ObjectType } from '@nestjs/graphql';
+
+@ObjectType()
+export class UserExists {
+  @Field(() => Boolean)
+  exists: boolean;
+}

server/src/core/auth/dto/user-exists.input.ts

@@ -0,0 +1,10 @@
+import { ArgsType, Field } from '@nestjs/graphql';
+import { IsNotEmpty, IsString } from 'class-validator';
+
+@ArgsType()
+export class CheckUserExistsInput {
+  @Field(() => String)
+  @IsString()
+  @IsNotEmpty()
+  email: string;
+}