const { app, BrowserWindow, ipcMain, shell, systemPreferences } = require('electron');


const axios = require('axios');
const fs = require('fs');
//const http = require('http');
const os = require('os');
const path = require('path');
const process = require('process');
//const request = require('request');
//const url = require('url');
// const usb = require('usb') // Compiled with an old version of Node.js

console.log(os.type());
console.log(process.getSystemVersion());


if (os.type == 'Darwin') {
    if (systemPreferences.getMediaAccessStatus('microphone') != 'granted') {
        systemPreferences.askForMediaAccess('microphone');
    } else {
        console.log(systemPreferences.getMediaAccessStatus('microphone'));
    }

    if (systemPreferences.getMediaAccessStatus('camera') != 'granted') {
        systemPreferences.askForMediaAccess('camera');
    } else {
        console.log(systemPreferences.getMediaAccessStatus('camera'));
    }
}


function createWindow () {
    // Create the browser window.
    win = new BrowserWindow({
        width: 1500, // 1500 1280
        height: 1024, // 1024
        backgroundColor: '#aaa',
        icon: './app/img/favicon.ico',
        webPreferences: {
            contextIsolation: false,
            nodeIntegration: true,
            nodeIntegrationInWorker: true
        }
    })

    // win.setMinimumSize(1024, 768);
    win.setMinimumSize(1280, 768);

    //win.setFullScreenable(false)
    win.FullScreenable = false;

    // win.webContents.session.clearStorageData(['filesystem']); // Does this do anything???

    // and load the index.html of the app.
    win.loadFile('app/index.html');

    // Open the DevTools.
    win.webContents.openDevTools();

    // Emitted when the window is closed.
    win.on('closed', () => {
        // Dereference the window object, usually you would store windows
        // in an array if your app supports multi windows, this is the time
        // when you should delete the corresponding element.
        win = null;
    })

    win.on('minimize', () => {
        //win.restore();
    })
}


// This method will be called when Electron has finished
// initialization and is ready to create browser windows.
// Some APIs can only be used after this event occurs.
app.on('ready', createWindow);


// Quit when all windows are closed.
app.on('window-all-closed', () => {
    // On macOS it is common for applications and their menu bar
    // to stay active until the user quits explicitly with Cmd + Q
    if (process.platform !== 'darwin') {
        app.quit();
    }
})


app.on('activate', () => {
    // On macOS it's common to re-create a window in the app when the
    // dock icon is clicked and there are no other windows open.location_files
    if (win === null) {
        createWindow();
    }
})


// Download file to path
// full_save_path should be the full path that includes the filename
// Updated 2022-03-09
ipcMain.handle('download_file', async (event, api_base_url, api_endpoint, full_save_path) => {
    console.log('*** Electron IPC Main: download_file() ***');
    // console.log('ipcMain on download_file: api_base_url='+api_base_url+' | api_temporary_token='+api_temporary_token);
    console.log('ipcMain on download_file: api_base_url='+api_base_url);
    console.log('ipcMain download and save file: HTTP '+api_endpoint+' -> FILE '+full_save_path);

    let result = await download_file(api_base_url, api_endpoint, full_save_path);

    console.log(result);
    console.log('End: Electron IPC Main: download_file()');
    // return 'Return from Electron IPC Main download_file()';
    return result;
});


// Download file to path
// full_save_path should be the full path that includes the filename
// Updated 2022-03-09
async function download_file(api_base_url, api_endpoint, full_save_path) {
    console.log('*** node.js: download_file() ***');

    axios.defaults.baseURL = api_base_url;
    axios.defaults.headers.common['Access-Control-Allow-Origin'] = '*'; // app_config.access_control_allow_origin;
    axios.defaults.headers.common['content-type'] = 'application/json';
    axios.defaults.headers.common['x-aether-api-key'] = 'dFP6J9DVj9hUgIMn-fNIqg'; // api_secret_key;
    axios.defaults.headers.common['x-account-id'] = '_XY7DXtc9MY'; // account_id;

    const url = api_endpoint;

    let download_result = await axios({
        method: 'get',
        url: url,
        responseType: 'stream' /* responseType must be stream */
    }).then(function (response) {
        console.log('Downloading...');
        // response.data.pipe(fs.createWriteStream(full_save_path));
        // return true;

        // response.data.pipe(fs.createWriteStream(full_save_path));
        // return true;

        const writer = fs.createWriteStream(full_save_path);

        console.log('Write stream created');

        return new Promise((resolve, reject) => {
            response.data.pipe(writer);
            let error = null;
            writer.on('error', err => {
                console.log('Writer error!');
                error = err;
                console.log(error);
                writer.close();
                reject(err);
            });
            writer.on('close', () => {
                console.log('Writer close!');
                if (!error) {
                    resolve(true);
                }
                //no need to call the reject here, as it will have been called in the
                //'error' stream;
            });
        });
    })
    .catch(function (error) {
        console.log(`Error downloading! Endpoint: ${api_endpoint}`);
        // console.log(error);
        // console.log(error.response);
        if (error.response && error.response.status === 404) {
            return null; // Returning null since there were no results
        }
        console.log(`Response Status: ${error.response.status}; Status Text: ${error.response.statusText}`);
        return false; // Returning false since something may have gone wrong. Also more in line with what the API returns.
    });

    console.log(download_result);
    console.log('End: download_file()');
    // return 'Return from download_file()';
    return download_result;
}


ipcMain.handle('open_hash_file_to_temp', async (event, host_file_cache_path, hash, host_file_temp_path, filename) => {
    console.log('*** Electron IPC Main: open_hash_file_to_temp() ***');
    console.log('ipcMain on open_hash_file_to_temp');
    console.log(`ipcMain open hash file from temp directory: ${host_file_cache_path} -> ${host_file_temp_path}/${filename}`);

    let cache_file_path = path.join(process.cwd(), host_file_cache_path);
    console.log(cache_file_path);

    let hash_filename = hash+'.file';
    let full_cache_file_path = path.join(cache_file_path, hash_filename);
    console.log(full_cache_file_path);

    open_temp_file_path = path.join(process.cwd(), host_file_temp_path, filename); // 'temp/'
    console.log(open_temp_file_path);

    if (fs.existsSync(open_temp_file_path)) {
        console.log('A file with the same name already exists in the local temp directory: '+open_temp_file_path);
        // NOTE: Should the file be checked to see if it has changed from the hashed cache version???
        // NOTE: What if they made changes to the file locally in temp? The changed file would be used since a new copy is not being made.
        // NOTE: It might make sense for this to be a configurable option depending on the group. Some do not allow changes. This helps enforce that.
    }

    if (fs.existsSync(full_cache_file_path)) {
        console.log(`Hashed file exists in cache: ${full_cache_file_path}`);
        console.log(`Copying file to temp: ${open_temp_file_path}`);
        try {
            await fs.copyFileSync(full_cache_file_path, open_temp_file_path);
        } catch (error) {
            console.error(error);
            return false;
        }

        // console.log('Creating file link: '+open_temp_file_path);
        // fs.linkSync(full_cache_file_path, open_temp_file_path);
    } else {
        console.log(`Hashed file not found in cache: ${full_cache_file_path}`);
        return false;
    }

    try {
        await shell.openPath(open_temp_file_path);
    } catch (error) {
        console.error(error);
        return false;
    }

    console.log(true);
    console.log('End: Electron IPC Main: open_hash_file_to_temp()');
    // return 'Return from Electron IPC Main open_hash_file_to_temp()';
    return true;
});


ipcMain.handle('open_local_file', async (event, local_file_path, filename, use_cwd=true) => {
    console.log('*** Electron IPC Main: open_local_file() ***');
    console.log('ipcMain on open_local_file');
    console.log(`ipcMain open local file from directory: ${local_file_path}/${filename}`);

    let full_local_file_path = null;

    if (use_cwd) {
        full_local_file_path = path.join(process.cwd(), local_file_path, filename);
        console.log(full_local_file_path);
    } else {
        full_local_file_path = path.join(local_file_path, filename);
        console.log(full_local_file_path);
    }

    if (fs.existsSync(full_local_file_path)) {
        console.log(`Local file exists: ${full_local_file_path}`);
    } else {
        console.log(`Local file not found: ${full_local_file_path}`);
        return false;
    }

    try {
        await shell.openPath(full_local_file_path);
    } catch (error) {
        console.error(error);
        return false;
    }

    console.log('End: Electron IPC Main: open_local_file()');
    return true;
});