/*
 * decaffeinate suggestions:
 * DS102: Remove unnecessary code created because of implicit returns
 * Full docs: https://github.com/decaffeinate/decaffeinate/blob/master/docs/suggestions.md
 */
const SandboxedModule = require('sandboxed-module');
const sinon = require('sinon');
require('chai').should();
const modulePath = require('path').join(__dirname, '../../../app/js/OutputFileFinder');
const path = require("path");
const { expect } = require("chai");
const { EventEmitter } = require("events");

describe("OutputFileFinder", function() {
	beforeEach(function() {
		this.OutputFileFinder = SandboxedModule.require(modulePath, { requires: {
			"fs": (this.fs = {}),
			"child_process": { spawn: (this.spawn = sinon.stub())
		},
			"logger-sharelatex": { log: sinon.stub(), warn: sinon.stub() }
		}
	});
		this.directory = "/test/dir";
		return this.callback = sinon.stub();
	});

	describe("findOutputFiles", function() {
		beforeEach(function() {
			this.resource_path = "resource/path.tex";
			this.output_paths   = ["output.pdf", "extra/file.tex"];
			this.all_paths = this.output_paths.concat([this.resource_path]);
			this.resources = [
				{path: (this.resource_path = "resource/path.tex")}
			];
			this.OutputFileFinder._getAllFiles = sinon.stub().callsArgWith(1, null, this.all_paths);
			return this.OutputFileFinder.findOutputFiles(this.resources, this.directory, (error, outputFiles) => {
				this.outputFiles = outputFiles;
				
		});
		});

		return it("should only return the output files, not directories or resource paths", function() {
			return expect(this.outputFiles).to.deep.equal([{
				path: "output.pdf",
				type: "pdf"
			}, {
				path: "extra/file.tex",
				type: "tex"
			}]);
	});
});
			
	return describe("_getAllFiles", function() {
		beforeEach(function() {
			this.proc = new EventEmitter();
			this.proc.stdout = new EventEmitter();
			this.spawn.returns(this.proc);
			this.directory = "/base/dir";
			return this.OutputFileFinder._getAllFiles(this.directory, this.callback);
		});
			
		describe("successfully", function() {
			beforeEach(function() {
				this.proc.stdout.emit(
					"data",
					["/base/dir/main.tex", "/base/dir/chapters/chapter1.tex"].join("\n") + "\n"
				);
				return this.proc.emit("close", 0);
			});
				
			return it("should call the callback with the relative file paths", function() {
				return this.callback.calledWith(
					null,
					["main.tex", "chapters/chapter1.tex"]
				).should.equal(true);
			});
		});

		return describe("when the directory doesn't exist", function() {
			beforeEach(function() {
				return this.proc.emit("close", 1);
			});
				
			return it("should call the callback with a blank array", function() {
				return this.callback.calledWith(
					null,
					[]
				).should.equal(true);
			});
		});
	});
});