/*
 * decaffeinate suggestions:
 * DS102: Remove unnecessary code created because of implicit returns
 * DS207: Consider shorter variations of null checks
 * Full docs: https://github.com/decaffeinate/decaffeinate/blob/master/docs/suggestions.md
 */
const sinon = require("sinon");
const chai = require("chai");
chai.should();
const { expect } = chai;
const mongojs = require("../../../app/js/mongojs");
const { db } = mongojs;
const { ObjectId } = mongojs;
const Settings = require("settings-sharelatex");

const TrackChangesApp = require("./helpers/TrackChangesApp");
const TrackChangesClient = require("./helpers/TrackChangesClient");
const MockDocUpdaterApi = require("./helpers/MockDocUpdaterApi");
const MockWebApi = require("./helpers/MockWebApi");

describe("Restoring a version", function() {
	before(function(done) {
		sinon.spy(MockDocUpdaterApi, "setDoc");

		this.now = Date.now();
		this.user_id = ObjectId().toString();
		this.doc_id = ObjectId().toString();
		this.project_id = ObjectId().toString();
		MockWebApi.projects[this.project_id] = {features: {versioning: true}};
		
		const minutes = 60 * 1000;

		this.updates = [{
			op: [{ i: "one ", p: 0 }],
			meta: { ts: this.now - (6 * minutes), user_id: this.user_id },
			v: 3
		}, {
			op: [{ i: "two ", p: 4 }],
			meta: { ts: this.now - (4 * minutes), user_id: this.user_id },
			v: 4
		}, {
			op: [{ i: "three ", p: 8 }],
			meta: { ts: this.now - (2 * minutes), user_id: this.user_id },
			v: 5
		}, {
			op: [{ i: "four", p: 14 }],
			meta: { ts: this.now, user_id: this.user_id },
			v: 6
		}];
		this.lines = ["one two three four"];
		this.restored_lines = ["one two "];
		this.beforeVersion = 5;

		MockWebApi.users[this.user_id] = (this.user = {
			email: "user@sharelatex.com",
			first_name: "Leo",
			last_name: "Lion",
			id: this.user_id
		});

		MockDocUpdaterApi.docs[this.doc_id] = {
			lines: this.lines,
			version: 7
		};

		TrackChangesApp.ensureRunning(() => {
			return TrackChangesClient.pushRawUpdates(this.project_id, this.doc_id, this.updates, error => {
				if (error != null) { throw error; }
				return TrackChangesClient.restoreDoc(this.project_id, this.doc_id, this.beforeVersion, this.user_id, error => {
					if (error != null) { throw error; }
					return done();
				});
			});
		});
		return null;
	});

	after(function() {
		MockDocUpdaterApi.setDoc.restore();
		return null;
	});

	return it("should set the doc in the doc updater", function() {
		MockDocUpdaterApi.setDoc
			.calledWith(this.project_id, this.doc_id, this.restored_lines, this.user_id, true)
			.should.equal(true);
		return null;
	});
});