recruitment task

lib/constatnts.ts

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+/** @format */
+
+export const MEMBERS_ON_PAGE = 8;
+export const PATHS_TO_FILES = ["crew.json", "crew.yaml"];

lib/crew.ts

@@ -1,4 +1,21 @@
 /**
+ * @format
  * @todo Prepare a method to return a list of crew members
  * @description The list should only include crew members aged 30 to 40
  */
+
+import { CrewMember } from "@/models/CrewMembers";
+import { MEMBERS_ON_PAGE, PATHS_TO_FILES } from "./constatnts";
+import { getLocalData } from "./getMockData";
+
+export const getCrewMembers = (page: number) =>
+	getLocalData(PATHS_TO_FILES).then((data) => {
+		const filteredMembers = data.filter((item: CrewMember) => item.age >= 30 && item.age <= 40);
+
+		const membersOnPage = filteredMembers.slice(
+			(page - 1) * MEMBERS_ON_PAGE,
+			page * MEMBERS_ON_PAGE
+		);
+
+		return { membersOnPage, countMembers: filteredMembers.length };
+	});

lib/getMockData.ts

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+/** @format */
+
+import fs from "fs";
+import yaml from "js-yaml";
+import { sortAlphabeticOrder } from "./sortAlphabeticOrder";
+import { CrewMember, JsonFileType, YamlFileType } from "@/models/CrewMembers";
+
+export async function getLocalData(paths: string[]): Promise<CrewMember[]> {
+	let objectData: CrewMember[] = [];
+
+	paths.forEach((filePath) => {
+		const extension = filePath.split(".").pop();
+
+		const file = fs.readFileSync(`./${filePath}`, "utf8");
+
+		let parsedData = [];
+		let transformedObject: CrewMember[] = [];
+
+		switch (extension) {
+			case "json":
+				parsedData = JSON.parse(file) as JsonFileType[];
+
+				transformedObject = parsedData.map(
+					({ firstName, lastName, nationality, age, profession }) => ({
+						fullName: `${firstName} ${lastName}`,
+						nationality,
+						age,
+						profession,
+					})
+				);
+
+				objectData = [...objectData, ...transformedObject];
+
+				break;
+
+			case "yaml":
+				parsedData = yaml.load(file) as YamlFileType[];
+
+				transformedObject = parsedData.map(({ name, nationality, years_old, occupation }) => ({
+					fullName: name,
+					nationality,
+					age: years_old,
+					profession: occupation,
+				}));
+
+				objectData = [...objectData, ...transformedObject];
+
+				break;
+			default:
+				throw new Error("Unsupported file extension");
+		}
+	});
+	return sortAlphabeticOrder(objectData);
+}

lib/sortAlphabeticOrder.ts

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+/** @format */
+
+import { CrewMember } from "@/models/CrewMembers";
+
+export const sortAlphabeticOrder = (objectData: CrewMember[]) =>
+	objectData.sort(function (a, b) {
+		if (a.fullName < b.fullName) {
+			return -1;
+		}
+		if (a.fullName > b.fullName) {
+			return 1;
+		}
+		return 0;
+	});

models/CrewMembers.ts

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+/** @format */
+
+export type JsonFileType = {
+	firstName: string;
+	lastName: string;
+	nationality: string;
+	age: number;
+	profession: string;
+};
+
+export type YamlFileType = {
+	name: string;
+	nationality: string;
+	years_old: number;
+	occupation: string;
+};
+
+export type FileType = JsonFileType | YamlFileType;
+
+export type CrewMember = {
+	fullName: string;
+	nationality: string;
+	age: number;
+	profession: string;
+};
+
+export interface SchemaCrewMembers {
+	members: CrewMember[] | [];
+	countMembers: number;
+}