import fs from 'fs';
import request from 'request';
import prompts from 'prompts';
import aws4 from 'aws4';
import https from 'https';
import { parseString } from 'xml2js';

import { accounts } from './accounts.json'; 
import { HEADERS, SERVER_URL } from './config';

export default class Avatar {
  constructor() {
    this.logger = null;
    this.playersReturned = 0;
  }

  async run() {
    console.log(`You have ${accounts.length} players available!\n`);
		
		const getChoice = async () => {
      const response = await prompts([
        {
          type: 'text',
          name: 'count',
          message: 'Number of Players to Change Avatar:',
        },
      ]);
    
      return response;
    };

    const response = await getChoice();
		const { count } = response;
		
		const players = accounts.sort(() => Math.round(Math.random()) - 0.5);
		
		for (let i = 0; i < parseInt(count); i++) {
			this.changeAvatar(players[i]);
		}

    const getSummary = setInterval(() => {
      if (this.playersReturned === parseInt(count)) {
				clearInterval(getSummary);
				fs.writeFile('accounts.json', JSON.stringify({accounts:players}, null, 2), 'utf8', (err, data) => {
          if (err) {
            console.log('Error saving accounts: ', err);
					}
					console.log('Done!');
        });
      }
    }, 1000);
  }

  changeAvatar(player) {
		const { username } = player;
		console.log(`Attempting to change ${username}'s avatar...`);

    request({
      url: `https://${SERVER_URL}/credentials/s3`,
      headers: {
        ...HEADERS,
        authorization: `Bearer ${player.accessToken}`,
      }
    }, async (error, response, body) => {
      try {
        const result = JSON.parse(body);
        const { error, accessKeyId, secretKey, sessionToken, expiration } = result;

				if (error) {
					console.log(`Error: ${error}`);
					return;
				}
				
				this.uploadAvatar({ ...result, player });
      } catch (error) {
        console.log('Error\n', error.toString('utf8'));
      }
    });
	}
	
	uploadAvatar({ accessKeyId, secretKey, sessionToken, expiration, player }) {
		const filename = `${player.username}.jpg`;

		request({
			uri: 'https://mailaton.com/avagen/',
			encoding: null
		}, (error, response, body) => {
			let options = {
				method: 'PUT',
				service: 's3',
				region: 'us-east-1',
				host: 'hypespace-quiz.s3.amazonaws.com',
				path: `/avatars/${filename}`,
				signQuery: true,
				headers: {
					'Content-Type': 'image/jpeg',
				},
			};
	
			aws4.sign(options, {
				accessKeyId,
				secretAccessKey: secretKey,
				sessionToken,
			});

			options.headers = {
				...options.headers,
				'Content-Length': new Buffer(body).length,
			};

			const req = https.request(options, response => {
				if (response.statusCode === 200) {
					this.setAvatar(player);
				} else {
					console.log('response', response);
					console.log(`Error uploading avatar. Got Status Code ${response.statusCode}!`);
				}
			});

			req.on('error', err => {
				console.log('Error uploading avatar:', err);
			});

			req.write(body);

			req.end();
		});
	}

	setAvatar(player) {
		const filename = `${player.username}.jpg`;

		const options = {
			headers: {
        ...HEADERS,
        authorization: `Bearer ${player.accessToken}`,
			},
			body: JSON.stringify({avatarUrl: filename}),
		};

		request.put(`https://${SERVER_URL}/users/me/avatarUrl`, options)
			.on('error', error => console.log('Error:', error))
			.on('response', response => {
				response.on('data', data => {
					try {
						const { error, avatarUrl } = JSON.parse(data);
						if (error) {
							console.log(`Error setting avatar for ${player.username}: ${error}`);
						} else {
							console.log(`${player.username}'s avatar successfully changed!`, avatarUrl);
							player.avatarUrl = avatarUrl;
						}
					} catch (error) {
						console.log(`Error setting avatar for ${player.username}: ${error}`);
					}
					this.playersReturned++;
				});
			});
	}
}