[GraphQL] Add dossierEnvoyerMessage mutation

app/graphql/mutations/dossier_envoyer_message.rb

@@ -0,0 +1,27 @@
+module Mutations
+  class DossierEnvoyerMessage < Mutations::BaseMutation
+    description "Envoyer un message à l'usager du dossier."
+
+    argument :dossier_id, ID, required: true, loads: Types::DossierType
+    argument :instructeur_id, ID, required: true, loads: Types::ProfileType
+    argument :body, String, required: true
+    argument :attachment, ID, required: false
+
+    field :message, Types::MessageType, null: true
+    field :errors, [Types::ValidationErrorType], null: true
+
+    def resolve(dossier:, instructeur:, body:, attachment: nil)
+      message = CommentaireService.build(instructeur, dossier, body: body, piece_jointe: attachment)
+
+      if message.save
+        { message: message }
+      else
+        { errors: message.errors.full_messages }
+      end
+    end
+
+    def authorized?(dossier:, instructeur:, body:)
+      instructeur.is_a?(Instructeur) && instructeur.dossiers.exists?(id: dossier.id)
+    end
+  end
+end

app/graphql/schema.graphql

@@ -352,6 +352,33 @@ type DossierEdge {
   node: Dossier
 }
 
+"""
+Autogenerated input type of DossierEnvoyerMessage
+"""
+input DossierEnvoyerMessageInput {
+  attachment: ID
+  body: String!
+
+  """
+  A unique identifier for the client performing the mutation.
+  """
+  clientMutationId: String
+  dossierId: ID!
+  instructeurId: ID!
+}
+
+"""
+Autogenerated return type of DossierEnvoyerMessage
+"""
+type DossierEnvoyerMessagePayload {
+  """
+  A unique identifier for the client performing the mutation.
+  """
+  clientMutationId: String
+  errors: [ValidationError!]
+  message: Message
+}
+
 type DossierLinkChamp implements Champ {
   dossier: Dossier
   id: ID!
@@ -495,6 +522,11 @@ type Mutation {
   File information required to prepare a direct upload
   """
   createDirectUpload(input: CreateDirectUploadInput!): CreateDirectUploadPayload
+
+  """
+  Envoyer un message à l'usager du dossier.
+  """
+  dossierEnvoyerMessage(input: DossierEnvoyerMessageInput!): DossierEnvoyerMessagePayload
 }
 
 enum Order {
@@ -806,4 +838,14 @@ enum TypeDeChamp {
 """
 A valid URL, transported as a string
 """
-scalar URL
+scalar URL
+
+"""
+Éreur de validation
+"""
+type ValidationError {
+  """
+  A description of the error
+  """
+  message: String!
+}

app/graphql/types/mutation_type.rb

@@ -1,5 +1,7 @@
 module Types
   class MutationType < Types::BaseObject
     field :create_direct_upload, mutation: Mutations::CreateDirectUpload
+
+    field :dossier_envoyer_message, mutation: Mutations::DossierEnvoyerMessage
   end
 end