// Copyright (c) Microsoft Corporation. All rights reserved.
// Licensed under the MIT license. See LICENSE file in the project root for details.
import * as fs from "fs";
import * as path from "path";
import * as cp from "child_process";
import * as utilities from "./utilities";
import * as vscodeTest from "vscode-test";
import * as rimraf from "rimraf";
import {
    Application,
    Quality,
    ApplicationOptions,
    MultiLogger,
    Logger,
    ConsoleLogger,
} from "../../../automation";
import { SmokeTestsConstants } from "./smokeTestsConstants";
import { SmokeTestLogger } from "./smokeTestLogger";
import { AppiumHelper } from "./appiumHelper";

export class VsCodeManager {
    private cacheDirectory: string;

    private vsCodeClientDirectory: string;
    private resourcesDirectory: string;
    private extensionDirectory: string;
    private vsCodeClientAppFileDirectory: string;
    private vsCodeClientCmdDirectory: string;
    private vsixDirectory: string;
    private vsCodeUserDataDirectory: string;
    private artifactDirectory: string;

    private appiumLogDir: string;
    private setupEnvironmentLogDir: string;
    private currentSessionLogsDir?: string;

    private clientIsInstalled: boolean = false;
    private clientVersion: string;
    private taskKillCommands: string[] = [];
    private downloadPlatform =
        process.platform === "darwin"
            ? "darwin"
            : process.platform === "win32"
            ? "win32-x64-archive"
            : "linux-x64";

    private static VS_CODE_CLIENT_NOT_INSTALLED_ERROR = "VS Code client was not installed";
    private static CURRENT_SESSION_LOGS_DIR_ERROR = "Сurrent session logs directory is not defined";

    constructor(
        vscodeTestDirectory: string,
        resourcesDirectory: string,
        cacheDirectory: string,
        projectRoot: string,
    ) {
        this.cacheDirectory = cacheDirectory;
        this.resourcesDirectory = resourcesDirectory;
        this.clientVersion = process.env.CODE_VERSION ? process.env.CODE_VERSION : "stable";

        this.artifactDirectory = path.join(projectRoot, SmokeTestsConstants.artifactsDir);
        this.vsCodeUserDataDirectory = path.join(
            projectRoot,
            SmokeTestsConstants.VSCodeUserDataDir,
        );
        this.vsCodeClientDirectory = path.join(
            vscodeTestDirectory,
            `vscode-${this.downloadPlatform}-${this.clientVersion}`,
        );
        this.extensionDirectory = path.join(this.vsCodeClientDirectory, "extension");
        this.vsixDirectory = path.join(this.resourcesDirectory, "drop-win");

        this.appiumLogDir = path.join(this.artifactDirectory, "appium.log");
        this.setupEnvironmentLogDir = path.join(
            this.artifactDirectory,
            "SetupEnvironmentCommandsLogs.log",
        );

        this.vsCodeClientAppFileDirectory = this.downloadDirToExecutablePath();
        this.vsCodeClientCmdDirectory = vscodeTest.resolveCliPathFromVSCodeExecutablePath(
            this.vsCodeClientAppFileDirectory,
        );

        if (this.checkIfRequirePathsExists()) {
            this.clientIsInstalled = true;
        }
    }

    public getAppiumLogDir(): string {
        return this.appiumLogDir;
    }

    public getSetupEnvironmentLogDir(): string {
        return this.setupEnvironmentLogDir;
    }

    public async downloadVSCodeExecutable(): Promise<any> {
        SmokeTestLogger.projectInstallLog("*** Downloading VS Code executable...");

        if (!fs.existsSync(this.cacheDirectory)) {
            SmokeTestLogger.projectInstallLog(
                `*** Creating smoke tests cache directory: ${this.cacheDirectory}`,
            );
            fs.mkdirSync(this.cacheDirectory);
        }
        if (!fs.existsSync(this.vsCodeUserDataDirectory)) {
            SmokeTestLogger.projectInstallLog(
                `*** Creating VS Code user data directory: ${this.vsCodeUserDataDirectory}`,
            );
            fs.mkdirSync(this.vsCodeUserDataDirectory);
        }
        if (!fs.existsSync(this.artifactDirectory)) {
            SmokeTestLogger.projectInstallLog(
                `*** Creating artifact directory: ${this.artifactDirectory}`,
            );
            fs.mkdirSync(this.artifactDirectory);
        }

        this.vsCodeClientAppFileDirectory = await vscodeTest.downloadAndUnzipVSCode(
            this.clientVersion,
            this.downloadPlatform,
        );
        this.vsCodeClientCmdDirectory = vscodeTest.resolveCliPathFromVSCodeExecutablePath(
            this.vsCodeClientAppFileDirectory,
        );
        this.clientIsInstalled = true;
        this.taskKillCommands = this.collectTaskKillCommands();
    }

    public cleanUp(): void {
        SmokeTestLogger.info("\n*** Clean up...");
        if (fs.existsSync(this.vsCodeClientDirectory)) {
            SmokeTestLogger.info(
                `*** Deleting test VS Code directory: ${this.vsCodeClientDirectory}`,
            );
            rimraf.sync(this.vsCodeClientDirectory);
        }
        if (fs.existsSync(this.vsCodeUserDataDirectory)) {
            SmokeTestLogger.info(
                `*** Deleting VS Code temporary user data dir: ${this.vsCodeUserDataDirectory}`,
            );
            rimraf.sync(this.vsCodeUserDataDirectory);
        }
        if (fs.existsSync(this.artifactDirectory)) {
            SmokeTestLogger.info(`*** Deleting test logs directory: ${this.artifactDirectory}`);
            rimraf.sync(this.artifactDirectory);
        }

        this.clientIsInstalled = false;
    }

    public installExtensionFromVSIX(deleteVSIX: boolean = false): void {
        if (this.clientIsInstalled) {
            let args: string[] = [];
            args.push(`--extensions-dir=${this.extensionDirectory}`);
            let extensionFile = utilities.findFile(this.vsixDirectory, /.*\.(vsix)/);
            if (!extensionFile) {
                throw new Error(
                    `React Native extension .vsix is not found in ${this.resourcesDirectory}`,
                );
            }

            extensionFile = path.join(this.vsixDirectory, extensionFile);
            args.push(`--install-extension=${extensionFile}`);
            SmokeTestLogger.projectPatchingLog(
                `*** Installing extension to VS Code using command: ${
                    this.vsCodeClientCmdDirectory
                } ${args.join(" ")}`,
            );
            utilities.spawnSync(this.vsCodeClientCmdDirectory, args, { stdio: "inherit" });

            if (deleteVSIX) {
                SmokeTestLogger.info(`*** Deleting ${extensionFile} after installation`);
                rimraf.sync(extensionFile);
            } else {
                SmokeTestLogger.info(
                    "*** --dont-delete-vsix parameter is set, skipping deleting of VSIX",
                );
            }
        } else {
            throw new Error(VsCodeManager.VS_CODE_CLIENT_NOT_INSTALLED_ERROR);
        }
    }

    public killWinCodeProcesses(): void {
        if (process.platform !== "win32") {
            return;
        }
        try {
            SmokeTestLogger.info("*** Killing any running Code.exe instances");
            this.taskKillCommands.forEach(cmd => {
                SmokeTestLogger.info(`*** Running ${cmd}`);
                const result = utilities.execSync(cmd, undefined, this.setupEnvironmentLogDir);
                SmokeTestLogger.info(result.toString());
            });
        } catch (e) {
            // Do not throw error, just print it to avoid any build failures
            // Sometimes taskkill process throws error but tasks are already killed so error is pointless
            SmokeTestLogger.error(`${e.toString()}`);
        }
    }

    public async runVSCode(
        workspaceOrFolder: string,
        sessionName?: string,
        locale?: string,
    ): Promise<Application> {
        if (this.clientIsInstalled) {
            if (!sessionName) {
                sessionName = "UnknownTest";
            }

            process.env.REACT_NATIVE_TOOLS_LAZY_LOGS = "false";
            const dirName = sessionName;
            if (this.artifactDirectory) {
                const extensionLogsDir = path.join(
                    this.artifactDirectory,
                    dirName,
                    "extensionLogs",
                );
                process.env.REACT_NATIVE_TOOLS_LOGS_DIR = extensionLogsDir;
                this.currentSessionLogsDir = extensionLogsDir;
                const webdriverIOLogsDir = path.join(
                    this.artifactDirectory,
                    dirName,
                    "webdriverIOLogs",
                );
                AppiumHelper.createWebdriverIOLogDir(webdriverIOLogsDir);
                process.env.WEBDRIVER_IO_LOGS_DIR = webdriverIOLogsDir;
            }
            let quality: Quality;
            if (this.clientVersion === "insiders") {
                quality = Quality.Insiders;
            } else {
                quality = Quality.Stable;
            }
            const options = this.createOptions(
                quality,
                workspaceOrFolder,
                dirName,
                locale ? ["--locale", locale] : [],
            );
            const app = new Application(options);
            SmokeTestLogger.info(`Options for run ${dirName}: ${JSON.stringify(options, null, 2)}`);
            await app.start();
            return app;
        } else {
            throw new Error(VsCodeManager.VS_CODE_CLIENT_NOT_INSTALLED_ERROR);
        }
    }

    private createOptions(
        quality: Quality,
        workspaceOrFolder: string,
        dataDirFolderName: string,
        extraArgs?: string[],
    ): ApplicationOptions {
        if (this.clientIsInstalled) {
            let logsDir = "";
            if (this.currentSessionLogsDir) {
                logsDir = this.currentSessionLogsDir;
            } else {
                throw new Error(VsCodeManager.CURRENT_SESSION_LOGS_DIR_ERROR);
            }
            const loggers: Logger[] = [];
            loggers.push(new ConsoleLogger());

            SmokeTestLogger.info(`*** Executing ${this.vsCodeClientAppFileDirectory}`);

            return {
                quality,
                codePath: this.getElectronExecutablePath(),
                workspacePath: workspaceOrFolder,
                userDataDir: path.join(this.vsCodeUserDataDirectory, dataDirFolderName),
                extensionsPath: this.extensionDirectory,
                waitTime: SmokeTestsConstants.elementResponseTimeout,
                logger: new MultiLogger(loggers),
                verbose: true,
                screenshotsPath: path.join(logsDir, "screenshots"),
                extraArgs: extraArgs,
            };
        } else {
            throw new Error(VsCodeManager.VS_CODE_CLIENT_NOT_INSTALLED_ERROR);
        }
    }

    private collectTaskKillCommands(): string[] {
        if (process.platform !== "win32") {
            return [];
        }

        if (this.clientIsInstalled) {
            let commands: string[] = [];

            const userName = cp.execSync("whoami").toString().trim();

            commands.push(
                `taskkill /f /t /fi "WINDOWTITLE eq ${this.vsCodeClientAppFileDirectory}" /fi "USERNAME eq ${userName}"`,
            );
            // Code.exe (or Code - Insiders.exe) windows
            commands.push(
                `taskkill /f /t /fi "IMAGENAME eq ${this.vsCodeClientAppFileDirectory}" /fi "USERNAME eq ${userName}`,
            );
            // CodeHelper.exe window
            commands.push(
                `taskkill /f /t /fi "IMAGENAME eq CodeHelper.exe" /fi "USERNAME eq ${userName}`,
            );
            return commands;
        } else {
            throw new Error(VsCodeManager.VS_CODE_CLIENT_NOT_INSTALLED_ERROR);
        }
    }

    private getElectronExecutablePath() {
        const isInsiders = this.clientVersion === "insiders";

        switch (process.platform) {
            case "darwin":
                return isInsiders
                    ? path.resolve(this.vsCodeClientDirectory, "Visual Studio Code - Insiders.app")
                    : path.resolve(this.vsCodeClientDirectory, "Visual Studio Code.app");
            case "win32":
                return this.vsCodeClientDirectory;
            case "linux":
                return path.resolve(this.vsCodeClientDirectory, "VSCode-linux-x64");
            default:
                throw new Error(`Platform ${process.platform} isn't supported`);
        }
    }

    private downloadDirToExecutablePath() {
        const isInsiders = this.clientVersion === "insiders";

        switch (process.platform) {
            case "darwin":
                return isInsiders
                    ? path.resolve(
                          this.vsCodeClientDirectory,
                          "Visual Studio Code - Insiders.app/Contents/MacOS/Electron",
                      )
                    : path.resolve(
                          this.vsCodeClientDirectory,
                          "Visual Studio Code.app/Contents/MacOS/Electron",
                      );
            case "win32":
                return isInsiders
                    ? path.resolve(this.vsCodeClientDirectory, "Code - Insiders.exe")
                    : path.resolve(this.vsCodeClientDirectory, "Code.exe");
            case "linux":
                return isInsiders
                    ? path.resolve(this.vsCodeClientDirectory, "VSCode-linux-x64/code-insiders")
                    : path.resolve(this.vsCodeClientDirectory, "VSCode-linux-x64/code");
            default:
                throw new Error(`Platform ${process.platform} isn't supported`);
        }
    }

    public findStringInLogs(string: string, logFile: string): boolean {
        if (this.currentSessionLogsDir) {
            SmokeTestLogger.info(`*** Searching for \"${string}\" string in output file`);
            return utilities.findStringInFile(
                path.join(this.currentSessionLogsDir, logFile),
                string,
            );
        } else {
            throw new Error(VsCodeManager.CURRENT_SESSION_LOGS_DIR_ERROR);
        }
    }

    public findPatternInLogs(reg: RegExp, logFile: string): string[] | null {
        if (this.currentSessionLogsDir) {
            let content = fs
                .readFileSync(path.join(this.currentSessionLogsDir, logFile))
                .toString()
                .trim();
            const match = content.match(reg);
            if (!match) return null;
            return match;
        } else {
            throw new Error(VsCodeManager.CURRENT_SESSION_LOGS_DIR_ERROR);
        }
    }

    private checkIfRequirePathsExists(): boolean {
        return (
            fs.existsSync(this.vsCodeClientDirectory) &&
            fs.existsSync(this.vsCodeClientAppFileDirectory) &&
            fs.existsSync(this.vsCodeClientCmdDirectory) &&
            fs.existsSync(this.vsCodeUserDataDirectory) &&
            fs.existsSync(this.artifactDirectory)
        );
    }
}
