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src/Message/message.schema.ts

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+import { Inject, Injectable } from '@nestjs/common';
+import {
+  Pothos,
+  PothosRef,
+  PothosSchema,
+  SchemaBuilderToken,
+} from '@smatch-corp/nestjs-pothos';
+import { Builder } from '../Graphql/graphql.builder';
+import { PrismaService } from '../Prisma/prisma.service';
+
+@Injectable()
+export class MessageSchema extends PothosSchema {
+  constructor(
+    @Inject(SchemaBuilderToken) private readonly builder: Builder,
+    private readonly prisma: PrismaService,
+  ) {
+    super();
+  }
+
+  @PothosRef()
+  message() {
+    return this.builder.prismaObject('Message', {
+      fields: (t) => ({
+        id: t.exposeID('id'),
+        senderId: t.exposeID('senderId'),
+        chatRoomId: t.exposeID('chatRoomId'),
+        message: t.expose('message', { type: 'Json' as any }),
+        sentAt: t.expose('sentAt', { type: 'DateTime' }),
+        sender: t.relation('sender'),
+        chatRoom: t.relation('chatRoom'),
+      }),
+    });
+  }
+
+  @Pothos()
+  init(): void {
+    this.builder.queryFields((t) => ({
+      message: t.prismaField({
+        type: this.message(),
+        args: this.builder.generator.findUniqueArgs('Message'),
+        resolve: async (query, root, args, ctx, info) => {
+          return await this.prisma.message.findUnique({
+            ...query,
+            where: args.where,
+          });
+        },
+      }),
+      messages: t.prismaField({
+        type: [this.message()],
+        args: this.builder.generator.findManyArgs('Message'),
+        resolve: async (query, root, args, ctx, info) => {
+          return await this.prisma.message.findMany({
+            ...query,
+            skip: args.skip ?? 0,
+            take: args.take ?? 10,
+            orderBy: args.orderBy ?? undefined,
+            where: args.filter ?? undefined,
+          });
+        },
+      }),
+    }));
+  }
+}