/* eslint-disable
    camelcase,
    no-return-assign,
    no-unused-vars,
*/
// TODO: This file was created by bulk-decaffeinate.
// Fix any style issues and re-enable lint.
/*
 * decaffeinate suggestions:
 * DS101: Remove unnecessary use of Array.from
 * DS102: Remove unnecessary code created because of implicit returns
 * Full docs: https://github.com/decaffeinate/decaffeinate/blob/master/docs/suggestions.md
 */
const sinon = require('sinon');
const chai = require('chai');
const should = chai.should();
const { expect } = chai;
const modulePath = "../../../../app/js/RedisManager.js";
const SandboxedModule = require('sandboxed-module');

describe("RedisManager", function() {
	beforeEach(function() {
		this.RedisManager = SandboxedModule.require(modulePath, { requires: {
			"redis-sharelatex" : { 
				createClient: () => { return this.rclient = {
					auth: sinon.stub(),
					multi: () => this.rclient
				}; }
			},
			"settings-sharelatex": {
				redis: {
					history: {
						key_schema: {
							uncompressedHistoryOps({doc_id}) { return `UncompressedHistoryOps:${doc_id}`; },
							docsWithHistoryOps({project_id}) { return `DocsWithHistoryOps:${project_id}`; }
						}
					}
				}
			}
		}
	}
		);
		this.doc_id = "doc-id-123";
		this.project_id = "project-id-123";
		this.batchSize = 100;
		return this.callback = sinon.stub();
	});

	describe("getOldestDocUpdates", function() {
		beforeEach(function() {
			this.rawUpdates = [ {v: 42, op: "mock-op-42"}, { v: 45, op: "mock-op-45" }];
			this.jsonUpdates = (Array.from(this.rawUpdates).map((update) => JSON.stringify(update)));
			this.rclient.lrange = sinon.stub().callsArgWith(3, null, this.jsonUpdates);
			return this.RedisManager.getOldestDocUpdates(this.doc_id, this.batchSize, this.callback);
		});

		it("should read the updates from redis", function() {
			return this.rclient.lrange
				.calledWith(`UncompressedHistoryOps:${this.doc_id}`, 0, this.batchSize - 1)
				.should.equal(true);
		});

		it("should call the callback with the unparsed ops", function() {
			return this.callback.calledWith(null, this.jsonUpdates).should.equal(true);
		});


		describe("expandDocUpdates", function() {
			beforeEach(function() {
				return this.RedisManager.expandDocUpdates(this.jsonUpdates, this.callback);
			});

			return it("should call the callback with the parsed ops", function() {
				return this.callback.calledWith(null, this.rawUpdates).should.equal(true);
			});
		});


		return describe("deleteAppliedDocUpdates", function() {
			beforeEach(function() {
				this.rclient.lrem = sinon.stub();
				this.rclient.srem = sinon.stub();
				this.rclient.exec = sinon.stub().callsArgWith(0);
				return this.RedisManager.deleteAppliedDocUpdates(this.project_id, this.doc_id, this.jsonUpdates, this.callback);
			});

			it("should delete the first update from redis", function() {
				return this.rclient.lrem
					.calledWith(`UncompressedHistoryOps:${this.doc_id}`, 1, this.jsonUpdates[0])
					.should.equal(true);
			});

			it("should delete the second update from redis", function() {
				return this.rclient.lrem
					.calledWith(`UncompressedHistoryOps:${this.doc_id}`, 1, this.jsonUpdates[1])
					.should.equal(true);
			});

			it("should delete the doc from the set of docs with history ops", function() {
				return this.rclient.srem
					.calledWith(`DocsWithHistoryOps:${this.project_id}`, this.doc_id)
					.should.equal(true);
			});

			return it("should call the callback ", function() {
				return this.callback.called.should.equal(true);
			});
		});
	});

	return describe("getDocIdsWithHistoryOps", function() {
		beforeEach(function() {
			this.doc_ids = ["mock-id-1", "mock-id-2"];
			this.rclient.smembers = sinon.stub().callsArgWith(1, null, this.doc_ids);
			return this.RedisManager.getDocIdsWithHistoryOps(this.project_id, this.callback);
		});

		it("should read the doc_ids from redis", function() {
			return this.rclient.smembers
				.calledWith(`DocsWithHistoryOps:${this.project_id}`)
				.should.equal(true);
		});

		return it("should call the callback with the doc_ids", function() {
			return this.callback.calledWith(null, this.doc_ids).should.equal(true);
		});
	});
});