#!/usr/bin/env node

'use strict';

var JawsError = require('../lib/jaws-error'),
    Jaws = require('../lib/index.js'),
    program = require('commander'),
    utils = require('../lib/utils'),
    Promise = require('bluebird'),
    rawDebug = require('debug'),
    execute = utils.execute;

Promise.onPossiblyUnhandledRejection(function(error) {
  throw error;
});

var JAWS = new Jaws();

program
    .option('-v, --verbose')
    .version(JAWS._meta.version);

/**
 * New
 * - Create a new project|stage|region
 */
program
    .command('new <cmd> [params]')
    .description('new project, stage and region commands\n\nValid <cmd>\'s:' +
        '\n\nproject: create new JAWS project in CWD.' +
        '\n\t Ex: jaws new project' +
        '\n\nstage: create new stage in existing region' +
        '\n\t Ex: jaws new stage dev' +
        '\n\nregion: create new region for given stage' +
        '\n\t Ex: jaws new region dev'
    )
    .option('-d, --dont-exe-cf', 'Don\'t execute CloudFormation, just generate it.')
    .option('-r, --region <name>', 'name of aws region to use')
    .option('-b, --s3-bucket <name>', '[project,region] only: JAWS S3 bucket name.  Will be created if DNE in "project" cmd. Must exist for "region" cmd.')
    .option('-n, --proj-name <name>', '[project] only: name for new project')
    .option('-s, --stage <name>', '[project] only: same of stage for new project')
    .option('-e, --email <email>', '[project] only: notification email to use in CloudFormation')
    .option('-p, --aws-profile <profileName>', '[project] only: Admin AWS profile as defined in ~/.aws/credentials to use')
    .action(function(cmd, params, options) {

      if (cmd == 'project') {
        var CmdNewProject = require('../lib/commands/new_project');
        execute(CmdNewProject.run(
            options.projName,
            options.stage ? options.stage.toLowerCase() : null,
            options.s3Bucket,
            options.region,
            options.email,
            options.awsProfile,
            options.dontExeCf
        ));

      } else if (cmd == 'region' || cmd == 'stage') {
        var theParams = process.argv.slice(3);

        if (!theParams) {
          throw new JawsError('Missing params', JawsError.errorCodes.UNKNOWN);
        }

        if (theParams[0][0] == '-') { //TODO: how do we get around this commander shortcoming?
          throw new JawsError('Specify options after cmd', JawsError.errorCodes.UNKNOWN);
        }

        //TODO: iterate thru cmds to see how many are before -
        if (theParams.length < 2) {
          throw new JawsError('must specify stage name', JawsError.errorCodes.UNKNOWN);
        }

        var CmdNewStageRegion = require('../lib/commands/new_stage_region'),
            stageName = theParams[1];

        execute(CmdNewStageRegion.run(
            JAWS,
            cmd,
            stageName,
            options.region,
            options.s3Bucket,
            options.dontExeCf
        ));
      } else {
        console.error('Unsupported cmd ' + cmd + '. Must be project|stage|region');
        process.exit(1);
      }
    });

program
    .command('run')
    .description('Run the lambda in CWD locally')
    .action(function() {
      var runner = require('../lib/commands/run');
      execute(runner.run(JAWS));
    });

program
    .command('module <cmd> [params]')
    .description('aws-module commands\n\nValid <cmd>\'s:' +
        '\n\ninstall: install aws-module.' +
        '\n\t Ex: jaws module install <url>' +
        '\n\nupdate: update aws-module' +
        '\n\t Ex: jaws module update <url>' +
        '\n\ncreate: create aws-module action. Module will be created if DNE. create <module resource> <action>' +
        '\n\t Ex: jaws module create users list'
    )
    .option('-n, --no-save', '[install,update]: DONT merge awsm\'s CloudFormation extensions to your project')
    .option('-d, --dont-install-dependencies', '[install,update]: DONT install awsm\'s depdencies automatically')
    .option('-l, --lambda', '[create]: create lambda. Default is create lambda and endpoint.')
    .option('-e, --endpoint', '[create]: create API Gateway endpoint. Default is create lambda and endpoint.')
    .option('-r, --runtime <name>', '[create]: lambda runtime. Default nodejs')
    .action(function(cmd, params, options) {
      var theParams = process.argv.slice(3);
      if (!theParams) {
        throw new JawsError('Missing params', JawsError.errorCodes.UNKNOWN);
      }
      if (theParams[0][0] == '-') { //TODO: how do we get around this commander shortcoming?
        throw new JawsError('Specify options after cmd', JawsError.errorCodes.UNKNOWN);
      }

      if (cmd == 'install' || cmd == 'update') {
        //TODO: iterate thru cmds to see how many are before -
        if (theParams.length < 2) {
          throw new JawsError('Please specify awsm url', JawsError.errorCodes.UNKNOWN);
        }
        var url = theParams[1],
            theCmd = require('../lib/commands/module_install');

        execute(theCmd[cmd](JAWS, url, options.save, options.dontInstallDependencies));
      } else if (cmd == 'create') {
        if (theParams.length < 3) {
          throw new JawsError('Please specify awsm resource and action name');
        }

        var theCmd = require('../lib/commands/module_create');
        var module = {
          name: theParams[1],
          action: theParams[2],
          runtime: options.runtime || 'nodejs'
        };

        if (options.lambda) {
          module.type = 'lambda';
        } else if (options.endpoint) {
          module.type = 'endpoint';
        } else {
          module.type = 'both';
        }

        execute(theCmd.run(JAWS, module));
      } else {
        console.error('Unsupported cmd ' + cmd + '. Must be install|update|create');
        process.exit(1);
      }
    });

/**
 * Tag
 * - Tag a lambda or endpoint for deployment
 */

program
    .command('tag <type>')
    .description('Tag lambda function, api gateway resource (endpoint), or both for deployment ' +
        'the next time deploy command is run.')
    .option('-u, --untag', 'un-tag lambda|endpoint|both')
    .option('-a, --tag-all', 'tag all lambda|endpoint|both in project')
    .option('-l, --list-all', 'list all tagged lambda|endpoint|both in project')
    .option('-n, --untag-all', 'un-tag all lambda|endpoint|both in project')
    .action(function(type, options) {
      type = type.toLowerCase();

      if (-1 == ['endpoint', 'lambda', 'both'].indexOf(type)) {
        console.error('Unsupported type ' + type + '. Must be endpoint|lambda|both');
        process.exit(1);
      }

      var CmdTag = require('../lib/commands/tag');
      if (options.listAll) {
        execute(CmdTag.listAll(JAWS, type).then(function(relPaths) {
          console.log(relPaths);
        }));
      } else if (options.tagAll || options.untagAll) {
        var untag = (options.untagAll) ? true : false;
        execute(CmdTag.tagAll(JAWS, type, untag));
      } else {
        // If not tagging all, you have to be tagging whats in your CWD (null 1st param)
        execute(CmdTag.tag(type, null, options.untag));
      }
    });

/**
 * Deploy
 * - Deploy Lambda or Endpoint
 */

program
    .command('deploy <type> [stage] [region]')
    .description('Deploy a lambda function (type lambda), a REST API (endpoint), or provision AWS resources (resources) for the specified stage.' +
        ' By default will tag and deploy type at cwd')
    .option('-t, --tags', 'Deploy all lambdas tagged as deployable in their jaws.json. Default is to just deploy cwd')
    .option('-d, --dont-exe-cf', 'Don\'t execute the lambda cloudformation, just generate it. Zips will be uploaded to s3')
    .action(function(type, stage, region, options) {

      type = type.toLowerCase();
      switch (type) {
        case 'endpoint':
          var allTagged = (options.tags) ? true : false;
          var theCmd = require('../lib/commands/deploy_endpoint');
          execute(theCmd.run(JAWS, stage, region, allTagged));
          break;
        case 'lambda':
          var allTagged = (options.tags) ? true : false;
          var theCmd = require('../lib/commands/deploy_lambda');
          execute(theCmd.run(JAWS, stage, region, allTagged, options.dontExeCf));
          break;
        case 'resources':
          var theCmd = require('../lib/commands/deploy_resources');
          execute(theCmd.run(JAWS, stage, region));
          break;
        default:
          console.error('Unsupported type ' + type + '. Must be endpoint|lambda|resources');
          process.exit(1);
          break;
      }
    });

/**
 * Env
 * - Manage ENV variables for a stage
 */

program
    .command('env <cmd> <stage> <region> [key] [val]')
    .description('Manage env vars for stage & region. <region> can be "all" <stage> can be "local"' +
        '\n\nValid <cmd>\'s:' +
        '\n\nlist: vars for stage and region. jaws env list <stage> <region>' +
        '\n\t Ex: jaws env list prod all' +

        '\n\nget: var value for stage and region. jaws env get <stage> <region> <key>' +
        '\n\t Ex: jaws env get prod all JAWS_STAGE' +

        '\n\nset: var value for stage and region. jaws set env <stage> <region> <key> <val>' +
        '\n\t Ex: jaws env set prod us-east-1 TABLE_NAME users' +

        '\n\nunset: var value for stage and region. jaws env unset <stage> <region> <key>' +
        '\n\t Ex: jaws unset prod us-east-1 TABLE_NAME'
    )
    .action(function(cmd, stage, region, key, val) {
      var CmdEnv = require('../lib/commands/env');

      cmd = cmd.toLowerCase();
      switch (cmd) {
        case 'list':
          execute(CmdEnv.listEnv(JAWS, stage, region, true));
          break;
        case 'get':
          if (!key) {
            console.error('Must specify key to set');
            process.exit(1);
          }

          execute(CmdEnv.getEnvKey(JAWS, stage, region, key));
          break;
        case 'set':
          if (!key || typeof val == 'undefined') {
            console.error('Must specify key and value');
            process.exit(1);
          }

          execute(CmdEnv.setEnvKey(JAWS, stage, region, key, val));
          break;
        case 'unset':
          if (!key) {
            console.error('Must specify key to unset');
            process.exit(1);
          }

          if (val) {
            console.error('Do not specify val for unset');
            process.exit(1);
          }

          execute(CmdEnv.setEnvKey(JAWS, stage, region, key));
          break;
        default:
          console.error('Unsupported cmd "' + cmd + '". Must be list|get|set|unset');
          process.exit(1);
          break;
      }
    });

/**
 * Dash
 */

program
    .command('dash')
    .description('View a project summary and select resources to deploy.')
    .action(function() {
      var CmdDash = require('../lib/commands/dash');
      execute(CmdDash.run(JAWS));
    });

if (process.argv.length == 2) {
  program.outputHelp();
} else {
  program.parse(process.argv);
  if (program.verbose) {
    rawDebug.enable('jaws:*');
  }
}