@giancosta86/omnicourse-core/dist/taxonomy/Subject.js

Core model for OmniCourse

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.Subject = void 0;
const Work_1 = require("./Work");
const SubjectSet_1 = require("./SubjectSet");
const WorkSet_1 = require("./WorkSet");
class Subject {
    static create(locale, name, items) {
        const firstItem = items[Symbol.iterator]().next();
        if (firstItem.done) {
            throw new Error(`No items for subject '${name}'`);
        }
        const hasSubjects = firstItem.value instanceof Subject;
        const itemSet = hasSubjects
            ? SubjectSet_1.SubjectSet.createSorted(locale, items).assumeNonEmpty()
            : WorkSet_1.WorkSet.createSorted(locale, items).assumeNonEmpty();
        return new Subject(name, itemSet);
    }
    static equals(left, right) {
        const basicEquality = left.name === right.name &&
            left.containsSubjects === right.containsSubjects &&
            left.totalMinutes === right.totalMinutes;
        if (!basicEquality) {
            return false;
        }
        return left.containsSubjects
            ? left.items
                .stream()
                .equals(right.items, Subject.equals)
            : left.items
                .stream()
                .equals(right.items, Work_1.Work.equals);
    }
    constructor(name, items) {
        this.name = name;
        this.items = items;
        if (!name) {
            throw new Error("Empty subject name");
        }
        this.totalMinutes = items
            .stream()
            .fold(0, (cumulatedMinutes, item) => cumulatedMinutes + item.totalMinutes);
        this.containsSubjects = items.getAtIndex(0) instanceof Subject;
    }
}
exports.Subject = Subject;
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