// Copyright (c) Microsoft Corporation. All rights reserved.
// Licensed under the MIT license. See LICENSE file in the project root for details.

import * as path from "path";
import { homedir } from "os";
import { ApplePlatformDebugModeManager } from "../applePlatformDebugModeManager";
import { PlistBuddy } from "../ios/plistBuddy";
import { FileSystem } from "../../common/node/fileSystem";
import { PlatformType } from "../launchArgs";
import { DefaultsHelper } from "./defaultsHelper";

export class MacOSDebugModeManager extends ApplePlatformDebugModeManager {
    protected static REMOTE_DEBUGGING_FLAG_NAME = "isDebuggingRemotely";

    private scheme?: string;
    private nodeFileSystem: FileSystem;
    private plistBuddy: PlistBuddy;
    private defaultsHelper: DefaultsHelper;

    constructor(
        macosProjectRoot: string,
        projectRoot: string,
        scheme?: string,
        { nodeFileSystem = new FileSystem(), plistBuddy = undefined } = {},
    ) {
        super(macosProjectRoot, projectRoot);
        this.scheme = scheme;
        this.nodeFileSystem = nodeFileSystem;
        this.plistBuddy = plistBuddy || new PlistBuddy();
        this.defaultsHelper = new DefaultsHelper();
    }

    public async setAppRemoteDebuggingSetting(
        enable: boolean,
        configuration?: string,
        productName?: string,
    ): Promise<void> {
        // Find the plistFile with the configuration setting
        // There is a race here between us checking for the plist file, and the application starting up.
        const plistFile = await this.findPListFileWithRetry(configuration, productName);
        // Set the "isDebuggingRemotely" flag to "true", so on the next startup the application will default into debug mode
        // This is approximately equivalent to clicking the "Debug in Chrome" button
        return await this.defaultsHelper.setPlistBooleanProperty(
            plistFile,
            MacOSDebugModeManager.REMOTE_DEBUGGING_FLAG_NAME,
            enable,
        );
    }

    public async getAppRemoteDebuggingSetting(
        configuration?: string,
        productName?: string,
    ): Promise<boolean> {
        const plistFile = await this.findPListFileWithRetry(configuration, productName);
        try {
            // Attempt to read from the file, but if the property is not defined then return the empty string
            const remoteDebugEnabled = await this.plistBuddy.readPlistProperty(
                plistFile,
                MacOSDebugModeManager.REMOTE_DEBUGGING_SETTING_NAME,
            );
            return remoteDebugEnabled === "true";
        } catch (e) {
            return false;
        }
    }

    protected async tryOneAttemptToFindPListFile(
        configuration?: string,
        productName?: string,
    ): Promise<string> {
        try {
            return await this.findPlistFile(configuration, productName);
        } catch (reason) {
            this.logger.debug(`Failed one attempt to find plist file: ${String(reason)}`);
            return "";
        }
    }

    private async findPlistFile(configuration?: string, productName?: string): Promise<string> {
        const bundleId = await this.plistBuddy.getBundleId(
            this.platformProjectRoot,
            this.projectRoot,
            PlatformType.macOS,
            false,
            configuration,
            productName,
            this.scheme,
        ); // Find the name of the application
        const plistFilePath = path.join(homedir(), "Library", "Preferences", `${bundleId}.plist`);
        const exist = await this.nodeFileSystem.exists(plistFilePath);
        if (!exist) {
            throw new Error(`Unable to find plist file for ${bundleId}`);
        } else {
            return plistFilePath;
        }
    }
}