Add query service

Author: suzukalight

src/backend/src/repository/typeorm/todo/queryService/Todo.ts

@@ -0,0 +1,37 @@
+import { Connection, Repository } from 'typeorm';
+import {
+  TodoQueryService,
+  DeadlineNearingTodosQuery,
+  DeadlineNearingTodosQueryResult,
+  AllTodosQuery,
+} from 'domain-model';
+
+import { Todo as OrmTodo, OrmTodoFactory } from '../entity/Todo';
+
+export class GqlTodoQueryService implements TodoQueryService {
+  private dbConnection: Connection;
+  private repository: Repository<OrmTodo>;
+
+  constructor(dbConnection: Connection) {
+    this.dbConnection = dbConnection;
+    this.repository = this.dbConnection.getRepository(OrmTodo);
+  }
+
+  public async all(_query: AllTodosQuery) {
+    // FIXME
+    return { todos: null };
+  }
+
+  public async allDeadlineNearingTodos(_query: DeadlineNearingTodosQuery) {
+    // TODO: queryを検査
+
+    // FIXME: conditionを正しく設定
+    const result = await this.repository.find({});
+    if (!result) return { todos: null };
+
+    const res: DeadlineNearingTodosQueryResult = {
+      todos: result.map((todo) => OrmTodoFactory.toDto(todo)),
+    };
+    return res;
+  }
+}