#!/usr/bin/env node

'use strict';

var JawsError = require('../lib/jaws-error'),
    Jaws = require('../lib/index.js'),
    JawsCLI = require('../lib/utils/cli.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);

/**
 * Project
 * - Create a new JAWS Project
 */

program
    .command('project <cmd>')
    .description(`Work with JAWS Project. Valid <cmd>'s: create`)
    .option('-d, --dont-exe-cf', `Don't execute CloudFormation, just generate it`)
    .option('-s, --stage <name>', 'Name for the stage to create')
    .option('-r, --region <name>', 'Name of AWS region to use')
    .option('-u, --domain <name>', 'domain ex: myapp.com')
    .option('-n, --proj-name <name>', 'Name for the new project')
    .option('-e, --email <email>', 'Notification email to use in CloudFormation')
    .option('-p, --aws-profile <profileName>', 'Admin AWS profile as defined in ~/.aws/credentials to use')
    .action(function(cmd, options) {

      if (!JawsCLI.validateCmd(cmd, ['create'])) process.exit(1);

      switch (cmd) {
        case 'create':
          let theCmd = require('../lib/commands/ProjectCreate');
          execute(theCmd.run(
              options.projName,
              options.stage ? options.stage.toLowerCase() : null,
              options.region,
              options.domain,
              options.email,
              options.awsProfile,
              options.dontExeCf
          ));
          break;
        default:
          console.error('Something went very wrong. :O');
          process.exit(1);
      }

    });

/**
 * Region
 * - Create a new JAWS Region in the Current Project
 */

program
    .command('region <cmd>')
    .description(`Work with AWS Regions. Valid <cmd>'s: create`)
    .option('-d, --dont-exe-cf', `Don't execute CloudFormation, just generate it`)
    .option('-s, --stage <name>', 'Name for the stage to be created in the region')
    .option('-r, --region <name>', 'Name of AWS region to use')
    .option('-p, --aws-profile <profileName>', 'Admin AWS profile as defined in ~/.aws/credentials to use')
    .action(function(cmd, options) {

      if (!JawsCLI.validateCmd(cmd, ['create'])) process.exit(1);

      switch (cmd) {
        case 'create':
          let theCmd = require('../lib/commands/StageRegion');
          execute(theCmd.create(
              JAWS,
              'region',
              options.stage,
              options.region,
              options.dontExeCf
          ));
          break;
        default:
          console.error('Something went very wrong. :O');
          process.exit(1);
      }
    });

/**
 * Stage
 * - Create a new JAWS Stage in the Current Project
 */

program
    .command('stage <cmd>')
    .description(`Work with JAWS stages in a region. Valid <cmd>'s: create`)
    .option('-d, --dont-exe-cf', `Don't execute CloudFormation, just generate it`)
    .option('-s, --stage <name>', 'Name for the stage create')
    .option('-r, --region <name>', 'Name of aws region to use')
    .option('-p, --aws-profile <profileName>', 'Admin AWS profile as defined in ~/.aws/credentials to use')
    .action(function(cmd, options) {

      if (!JawsCLI.validateCmd(cmd, ['create'])) process.exit(1);

      switch (cmd) {
        case 'create':
          let theCmd = require('../lib/commands/StageRegion');
          execute(theCmd.create(
              JAWS,
              'stage',
              options.stage,
              options.region,
              options.dontExeCf
          ));
          break;
        default:
          console.error('Something went very wrong. :O');
          process.exit(1);
      }
    });

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

program
    .command('module <cmd> [params]')
    .description(`aws-module commands\n\nValid <cmd>'s: create

create: create aws-module action. Module will be created if DNE. create <module resource> <action>
\t Ex: jaws module create users list`
    )
    .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', '[create]: lambda runtime. Valid: nodejs')
    .option('-p, --package-manager <pm>', '[create]: Select package manager used when creating awsm for publishing. Valid options: npm')
    .action(function(cmd, params, options) {

      let 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 == 'create') {
        if (theParams.length < 3) {
          throw new JawsError('Please specify awsm resource and action name');
        }

        let theCmd = require('../lib/commands/ModuleCreate'),
            name = theParams[1],
            action = theParams[2],
            runtime = options.runtime || 'nodejs',
            pkgMgr = options.packageManager || false,
            modType = 'both';

        if (options.lambda) {
          modType = 'lambda';
        } else if (options.endpoint) {
          modType = 'endpoint';
        }

        execute(theCmd.run(JAWS, name, action, runtime, pkgMgr, modType));
      } 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 or api gateway resource (endpoint) for deployment ' +
        'the next time deploy command is run. Type "lambda" is the default.')
    .option('-u, --untag', 'un-tag lambda|endpoint')
    .option('-a, --tag-all', 'tag all lambda|endpoint functions in project')
    .option('-l, --list-all', 'list all tagged lambda|endpoint functions in project')
    .option('-n, --untag-all', 'un-tag all lambda|endpoint functions in project')
    .action(function(type, options) {
      type = type || 'lambda';
      type = type.toLowerCase();

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

      let Tag = require('../lib/commands/Tag'),
          CmdTag = new Tag(JAWS, type);

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

      let allTagged = (options.tags) ? true : false,
          theCmd;

      type = type.toLowerCase();
      switch (type) {
        case 'endpoint':
          theCmd = require('../lib/commands/DeployEndpoint');
          execute(theCmd.run(JAWS, stage, region, allTagged));
          break;
        case 'lambda':
          theCmd = require('../lib/commands/DeployLambda');
          execute(theCmd.run(JAWS, stage, region, allTagged, options.dontExeCf));
          break;
        case 'resources':
          theCmd = require('../lib/commands/DeployResources');
          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"

Valid <cmd>'s:

list: vars for stage and region. jaws env list <stage> <region>

\t Ex: jaws env list prod all

get: var value for stage and region. jaws env get <stage> <region> <key>
\t Ex: jaws env get prod all JAWS_STAGE

set: var value for stage and region. jaws set env <stage> <region> <key> <val>
\t Ex: jaws env set prod us-east-1 TABLE_NAME users

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

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

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

          execute(CmdEnv.setEnvKey(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(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() {
      let CmdDash = require('../lib/commands/dash');
      execute(CmdDash.run(JAWS));
    });

/**
 * Postinstall
 * - Kept separate from "module" commands because the options for this may likely grow
 */

program
    .command('postinstall <module_name> <package_manager>')
    .description('Performs automation when an aws-module is installed via a package manager')
    .action(function(moduleName, packageManager) {
      let CmdPostInstall = require('../lib/commands/Postinstall');
      execute(CmdPostInstall.run(JAWS, moduleName, packageManager));
    });

program
    .command('*')
    .action(function(cmd) {
      console.error('Unknown command:', cmd);
    });

program.parse(process.argv);

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