Merge pull request 'Teacher registration' (#8) from teacher-registration into main

Reviewed-on: #8

docker/backend/src/mw/context.cr

@@ -47,30 +47,48 @@ module MW
       true
     end
 
-    def role?(role : Schema::UserRole) : Bool
-      @role == role == case @external
-      when Db::Admin
-        Schema::UserRole::Admin
-      when Db::Teacher
-        Schema::UserRole::Teacher
-      when Db::Student
-        Schema::UserRole::Student
+    def role?(external = true, *roles : Schema::UserRole) : Bool
+      return false unless authenticated?
+
+      roles.each do |role|
+        return true if @role == role && if external
+                         role == case @external
+                         when Db::Admin
+                           Schema::UserRole::Admin
+                         when Db::Teacher
+                           Schema::UserRole::Teacher
+                         when Db::Student
+                           Schema::UserRole::Student
+                         end
+                       else
+                         true
+                       end
       end
+
+      false
     end
 
-    def role!(role : Schema::UserRole) : Bool
-      raise "Invalid permissions" unless role? role
+    def role!(external = true, *roles : Schema::UserRole) : Bool
+      raise "Invalid permissions" unless role? external, *roles
 
       true
     end
 
-    def admin? : Bool
-      role? Schema::UserRole::Admin
+    private macro role_check(*roles)
+      {% for role in roles %}
+        {% name = role.names.last.underscore %}
+
+        def {{ name }}?(external = true) : Bool
+          role? external, {{ role }}
+        end
+
+        def {{ name }}!(external = true) : Bool
+          role! external, {{ role }}
+        end
+      {% end %}
     end
 
-    def admin! : Bool
-      role! Schema::UserRole::Admin
-    end
+    role_check Schema::UserRole::Admin, Schema::UserRole::Teacher, Schema::UserRole::Student
 
     def self.db_eq_role?(external : Granite::Base, role : Schema::UserRole) : Bool
       role == case external

docker/backend/src/mw/schema/mutation.cr

@@ -86,6 +86,15 @@ module MW
         id
       end
 
+      @[GraphQL::Field]
+      def register_teacher(context : Context, input : TeacherInput) : Teacher
+        context.teacher? external: false
+
+        Teacher.new(
+          Db::Teacher.create!(user_id: context.user.not_nil!.id, max_students: input.max_students, skif: input.skif)
+        )
+      end
+
       @[GraphQL::Field]
       def create_student(context : Context, input : StudentCreateInput) : Student
         context.admin!
@@ -109,7 +118,7 @@ module MW
 
       @[GraphQL::Field]
       def create_vote(context : Context, input : VoteCreateInput) : Vote
-        context.role! UserRole::Student
+        context.student!
 
         if input.teacher_ids.any? { |id| Db::Teacher.find(id).nil? }
           raise "Teachers not found"

docker/backend/src/mw/schema/teacher.cr

@@ -14,9 +14,7 @@ module MW
       end
 
       @[GraphQL::Field]
-      def max_students(context : Context) : Int32
-        context.admin!
-
+      def max_students : Int32
         find!.max_students
       end
 

docker/backend/src/mw/schema/user.cr

@@ -2,13 +2,6 @@ require "graphql"
 
 module MW
   module Schema
-    @[GraphQL::Enum]
-    enum UserRole
-      Admin
-      Teacher
-      Student
-    end
-
     @[GraphQL::Object]
     class User < GraphQL::BaseObject
       include Helpers::DbObject

docker/backend/src/mw/schema/user_role.cr

@@ -0,0 +1,12 @@
+require "graphql"
+
+module MW
+  module Schema
+    @[GraphQL::Enum]
+    enum UserRole
+      Admin
+      Teacher
+      Student
+    end
+  end
+end