/* eslint-disable no-plusplus */
/* eslint-disable no-await-in-loop */
import * as SDK from 'aws-sdk';
import { nanoid } from 'nanoid';

const fs = require('fs');
const core = require('@actions/core');

class AWS {
  static async runBuildJob(buildParameters, baseImage) {
    await this.run(
      buildParameters.awsStackName,
      'alpine/git',
      ['clone', `https://github.com/${process.env.GITHUB_REPOSITORY}.git`, `repo`],
      [
        {
          name: 'GITHUB_SHA',
          value: process.env.GITHUB_SHA,
        },
      ],
    );
    await this.run(
      buildParameters.awsStackName,
      baseImage.toString(),
      ['bin/bash', '-c', 'echo "test"'],
      [],
    );
  }

  static async run(stackName, image, commands, environment) {
    const ECS = new SDK.ECS();
    const CF = new SDK.CloudFormation();

    const taskDefStackName = `${stackName}-taskDef-${image}-${nanoid()}`
      .toString()
      .replace(/[^\da-z]/gi, '');
    core.info('Creating build job resources');
    const taskDefCloudFormation = fs.readFileSync(`${__dirname}/task-def-formation.yml`, 'utf8');
    await CF.createStack({
      StackName: taskDefStackName,
      TemplateBody: taskDefCloudFormation,
      Parameters: [
        {
          ParameterKey: 'ImageUrl',
          ParameterValue: image,
        },
        {
          ParameterKey: 'ServiceName',
          ParameterValue: taskDefStackName,
        },
      ],
    }).promise();
    await CF.waitFor('stackCreateComplete', { StackName: taskDefStackName }).promise();

    const taskDefResources = await CF.describeStackResources({
      StackName: taskDefStackName,
    }).promise();

    const baseResources = await CF.describeStackResources({ StackName: stackName }).promise();

    const clusterName = baseResources.StackResources.find(
      (x) => x.LogicalResourceId === 'ECSCluster',
    ).PhysicalResourceId;
    const task = await ECS.runTask({
      cluster: clusterName,
      taskDefinition: taskDefResources.StackResources.find(
        (x) => x.LogicalResourceId === 'TaskDefinition',
      ).PhysicalResourceId,
      platformVersion: '1.4.0',
      launchType: 'FARGATE',
      overrides: {
        containerOverrides: [
          {
            name: taskDefStackName,
            environment,
            command: commands,
          },
        ],
      },
      networkConfiguration: {
        awsvpcConfiguration: {
          subnets: [
            baseResources.StackResources.find((x) => x.LogicalResourceId === 'PublicSubnetOne')
              .PhysicalResourceId,
            baseResources.StackResources.find((x) => x.LogicalResourceId === 'PublicSubnetTwo')
              .PhysicalResourceId,
          ],
          assignPublicIp: 'ENABLED',
          securityGroups: [
            baseResources.StackResources.find(
              (x) => x.LogicalResourceId === 'ContainerSecurityGroup',
            ).PhysicalResourceId,
          ],
        },
      },
    }).promise();

    core.info('Build job is starting');

    await ECS.waitFor('tasksRunning', {
      cluster: clusterName,
      tasks: [task.tasks[0].taskArn],
    }).promise();

    core.info(`Build job is running`);

    // watching logs
    const kinesis = new SDK.Kinesis();

    const getTaskStatus = async () => {
      const tasks = await ECS.describeTasks({
        cluster: clusterName,
        tasks: [task.tasks[0].taskArn],
      }).promise();
      return tasks.tasks[0].lastStatus;
    };

    const stream = await kinesis
      .describeStream({
        StreamName: taskDefResources.StackResources.find(
          (x) => x.LogicalResourceId === 'KinesisStream',
        ).PhysicalResourceId,
      })
      .promise();

    let iterator = (
      await kinesis
        .getShardIterator({
          ShardIteratorType: 'TRIM_HORIZON',
          StreamName: stream.StreamDescription.StreamName,
          ShardId: stream.StreamDescription.Shards[0].ShardId,
        })
        .promise()
    ).ShardIterator;

    core.info(`Task status is ${await getTaskStatus()}`);

    while ((await getTaskStatus()) === 'RUNNING') {
      const records = await kinesis
        .getRecords({
          ShardIterator: iterator,
        })
        .promise();
      iterator = records.NextShardIterator;
      if (records.Records.length > 0) {
        for (let index = 0; index < records.Records.length; index++) {
          const record = records.Records[index].Data;
          core.info(AWS.ab2str(record));
        }
      }
      await new Promise((resolve) => setTimeout(resolve, 3000));
    }

    await ECS.waitFor('tasksStopped', {
      cluster: clusterName,
      tasks: [task.tasks[0].taskArn],
    }).promise();

    core.info('Build job has ended');

    await CF.deleteStack({
      StackName: taskDefStackName,
    }).promise();

    core.info('Cleanup complete');
  }

  static onlog(batch) {
    batch.forEach((log) => {
      core.info(`log: ${log}`);
    });
  }

  static ab2str(buf) {
    return String.fromCharCode.apply(undefined, new Uint8Array(buf));
  }
}
export default AWS;