"use strict";

/**
 * Высчитывает количество задач по каждому статусу для каждого проекта.
 *
 * @param projects {Array}
 * @param statuses {Array}
 * @param tasks {Array}
 *
 * @returns {Array}
 */
function getReport(projects, statuses, tasks) {
    function index(array) {
        return array.reduce(function (acc, item) {
            acc[item.id] = item.title;

            return acc;
        }, {});
    }

    var indexedProjects = index(projects);
    var indexedStatuses = index(statuses);

    function createInitialValue(projectId) {
        return statuses.reduce(function (statusesAcc, status) {
            statusesAcc[status.title] = 0;

            return statusesAcc;
        }, {title: indexedProjects[projectId]});
    }

    var result = tasks.reduce(function (acc, task) {
        if (acc[task.project_id] === undefined) {
            acc[task.project_id] = createInitialValue(task.project_id);
        }

        var statusTitle = indexedStatuses[task.status_id];

        acc[task.project_id][statusTitle] += 1;

        return acc;
    }, {});

    return Object.values(result);
}

var validResult = [
    {
        "title": "Canape CRM",
        "Площадка разворачивается": 0,
        "Площадка обновляется": 13,
        "Выполняется резервное копирование": 2,
        "ОК": 0,
        "Ошибка": 1
    },
    {
        "title": "Мастер",
        "Площадка разворачивается": 1,
        "Площадка обновляется": 6,
        "Выполняется резервное копирование": 2,
        "ОК": 0,
        "Ошибка": 0
    },
    {
        "title": "Canape CMS",
        "Площадка разворачивается": 13,
        "Площадка обновляется": 23,
        "Выполняется резервное копирование": 12,
        "ОК": 2,
        "Ошибка": 5
    }
];

var result = getReport(
    [
        {"id": 2, "title": "Canape CRM"},
        {"id": 3, "title": "Мастер"},
        {"id": 1, "title": "Canape CMS"}
    ],
    [
        {"id": 7, "title": "Площадка разворачивается"},
        {"id": 1, "title": "Площадка обновляется"},
        {"id": 2, "title": "Выполняется резервное копирование"},
        {"id": 3, "title": "ОК"},
        {"id": 6, "title": "Ошибка"}
    ],
    [{"project_id": 2, "status_id": 2}, {"project_id": 2, "status_id": 1}, {"project_id": 2, "status_id": 1}, {"project_id": 1, "status_id": 1}, {"project_id": 2, "status_id": 1}, {"project_id": 1, "status_id": 2}, {"project_id": 1, "status_id": 1}, {"project_id": 1, "status_id": 7}, {"project_id": 1, "status_id": 2}, {"project_id": 1, "status_id": 1}, {"project_id": 1, "status_id": 1}, {"project_id": 1, "status_id": 1}, {"project_id": 3, "status_id": 1}, {"project_id": 1, "status_id": 7}, {"project_id": 1, "status_id": 1}, {"project_id": 1, "status_id": 6}, {"project_id": 1, "status_id": 3}, {"project_id": 2, "status_id": 2}, {"project_id": 1, "status_id": 7}, {"project_id": 1, "status_id": 2}, {"project_id": 1, "status_id": 2}, {"project_id": 1, "status_id": 7}, {"project_id": 1, "status_id": 7}, {"project_id": 1, "status_id": 7}, {"project_id": 1, "status_id": 7}, {"project_id": 3, "status_id": 7}, {"project_id": 1, "status_id": 2}, {"project_id": 3, "status_id": 1}, {"project_id": 2, "status_id": 1}, {"project_id": 1, "status_id": 2}, {"project_id": 1, "status_id": 1}, {"project_id": 3, "status_id": 1}, {"project_id": 3, "status_id": 2}, {"project_id": 1, "status_id": 1}, {"project_id": 1, "status_id": 1}, {"project_id": 1, "status_id": 1}, {"project_id": 2, "status_id": 1}, {"project_id": 1, "status_id": 1}, {"project_id": 1, "status_id": 1}, {"project_id": 3, "status_id": 1}, {"project_id": 1, "status_id": 2}, {"project_id": 1, "status_id": 1}, {"project_id": 3, "status_id": 1}, {"project_id": 1, "status_id": 6}, {"project_id": 1, "status_id": 3}, {"project_id": 1, "status_id": 1}, {"project_id": 1, "status_id": 1}, {"project_id": 1, "status_id": 7}, {"project_id": 1, "status_id": 6}, {"project_id": 3, "status_id": 1}, {"project_id": 1, "status_id": 1}, {"project_id": 1, "status_id": 2}, {"project_id": 1, "status_id": 7}, {"project_id": 3, "status_id": 2}, {"project_id": 1, "status_id": 1}, {"project_id": 1, "status_id": 6}, {"project_id": 1, "status_id": 6}, {"project_id": 2, "status_id": 1}, {"project_id": 1, "status_id": 2}, {"project_id": 1, "status_id": 1}, {"project_id": 1, "status_id": 1}, {"project_id": 2, "status_id": 1}, {"project_id": 1, "status_id": 1}, {"project_id": 2, "status_id": 1}, {"project_id": 1, "status_id": 7}, {"project_id": 1, "status_id": 1}, {"project_id": 2, "status_id": 1}, {"project_id": 1, "status_id": 7}, {"project_id": 1, "status_id": 1}, {"project_id": 1, "status_id": 2}, {"project_id": 2, "status_id": 1}, {"project_id": 2, "status_id": 6}, {"project_id": 2, "status_id": 1}, {"project_id": 1, "status_id": 7}, {"project_id": 1, "status_id": 1}, {"project_id": 2, "status_id": 1}, {"project_id": 1, "status_id": 2}, {"project_id": 1, "status_id": 2}, {"project_id": 2, "status_id": 1}, {"project_id": 1, "status_id": 7}]
);

console.log(validResult, result);