hapi.app/commands/app.coffee

HAPI application generator

exec = require("child_process").exec
path = require "path"
fs = require "fs"
wrench = require "wrench"
async = require "async"
tools = require "../src/tools"

appTemplateFolder = path.join(__dirname,"../templates")

app = ->
    checkArguments(arguments)
    [folderName, callback] = arguments
    folderPath = path.join process.cwd(), folderName
    checkFolderAvailability(folderPath)
    async.series [
        (cb) -> createAppFolder(folderPath, cb),
        (cb) -> bundleTotem(folderPath, cb),
        (cb) -> installNpms(folderPath, cb),
        (cb) -> completeCommand(folderName, cb)
    ], callback or ->

createAppFolder = (folderPath, cb) ->
    console.log "Creating application folder: #{folderPath}"
    wrench.copyDirRecursive appTemplateFolder, folderPath, cb

bundleTotem = (folderPath, cb) ->
    console.log "Bundling Totem ..."
    tools.bundleTotem folderPath, cb

installNpms = (folderPath, cb) ->
    console.log "Installing npm packages for new app ..."
    tools.installNpms folderPath, cb

completeCommand = (folderName, cb) ->
    console.log """Congratulations! Your app folder has been created.
    Now you need to set it up!
    Run the following commands:
    cd #{folderName}
    hapi setup"""
    cb?()

checkArguments = (args) ->
    unless correctNumberOfArguments(args)
        throw new Error "wrong number of arguments"
    unless callbackArgumentIsFunction(args)
        throw new Error "invalid argument: #{callbackArgument(args)}"

checkFolderAvailability = (folderPath) ->
    if fs.existsSync folderPath
        throw new Error "Folder #{folderPath} already exists"

callbackArgument = (args) ->
    args[1]

correctNumberOfArguments = (args) ->
    0 < args.length < 3

callbackArgumentIsFunction = (args) ->
    return true if args.length < 2
    typeof callbackArgument(args) is "function"

module.exports.command = app
module.exports.help = "app path      creates a new HAPI app"