#!/usr/bin/env node

"use strict";

var mosaic = require('../lib/mosaic')
var program = require('commander')
var fs = require('fs')
var path = require('path')
var mkpath = require('mkpath') // Make all directories in a path, like mkdir -p

program.parse(process.argv)

var cwd = process.cwd()
var mopath = program.args[0]
var parts, family, moname, relativePath

if (!mopath) {
  /**
   * If user doesn't pass any params to mo init
   * set the namespace and component name
   * using the last 2 directoy names
   */
  parts = cwd.split(path.sep)
  family = parts[parts.length - 2]
  moname = parts[parts.length - 1]

  mopath = cwd
  relativePath = family + '/' + moname

  confirmArgs(function() {
    checkDuplication(generateFiles)
  })
} else {
  /**
   * Accepted user inputs:
   *   mo init qin/featured
   *   mo init featured
   * if split with '/' && got a second part
   *   the first part acts as the namespace
   * else
   *   the current directory name will be set to the namespace
   */
  parts = mopath.split('/')
  family = parts[1] ? parts[0] : path.basename(cwd)
  moname = parts[1] ? parts[1] : parts[0]

  mopath = path.join(cwd, mopath)
  relativePath = family + '/' + moname

  // if(!parts[1]) {
    confirmArgs(function() {
      checkDuplication(generateFiles)
    })
  // }
  // else checkDuplication(generateFiles)
}

function checkDuplication(callback) {
  var js = path.join(mopath, 'index.js')
  var pkg = path.join(mopath, 'package.json')
  var readme = path.join(mopath, 'README.md')
  var isFileExists = fs.existsSync(js) || fs.existsSync(pkg) || fs.existsSync(readme)

  if (isFileExists) {
    var question = "CAUTION!! File exists, overwrite? (y/n): "
    var handler = function(ok) {
      if (ok) {
        callback && callback()
      }
      else {
        process.exit(1)
      }
    }

    program.confirm(question, handler)
  }
  else {
    callback && callback()
  }
}

function checkFamilyPattern() {
  var FAMILY_PATTERN = /^\w+\.\w+(?:\.\w+)*$/

  if (!family.match(FAMILY_PATTERN) &&
      family !== 'mosaics' &&
      family !== 'mo') {
    mosaic.error('Family does\'t match pattern: mosaics | part1.part2')
    family = ''
    return false
  }
  if (family === 'mo') {
    mosaic.warn('family', 'mo is a special family for testing purpose only. It won\'t be published to CDN.')
  }
  return true
}

function confirmArgs(callback) {
  if(!parts[1] || !family) {
    // user types: mo init [moname]
    // or family should be renamed
    program.prompt('Specify family (' + family + '): ', function(val) {
      if(val) {
        family = val
        mopath = path.join(cwd, family, moname)
        relativePath = family + '/' + moname
      }
      if(checkFamilyPattern()) callback && callback()
      else confirmArgs(callback)
    })
  }
  else if(mopath === cwd) {
    // user types: mo init
    program.prompt('Specify family/name (' + family + '/' + moname + '): ', function(val) {
      if(val) {
        var split = val.split('/')
        family = split[0] || family
        moname = split[1] || moname
        mopath = path.join(cwd, family, moname)
        relativePath = family + '/' + moname
      }
      if(checkFamilyPattern()) callback && callback()
      else confirmArgs(callback)
    })
  }
  else {
    // user types: mo init [family]/[moname]
    if(checkFamilyPattern()) callback && callback()
    else confirmArgs(callback)
  }
}

function generateFiles() {
  var pathJs = path.join(mopath, 'index.js')
  var pathPackage = path.join(mopath, 'package.json')
  var pathReadme

  var contentsOfJs = [
    'KISSY.add(\'' + relativePath + '/index\', function(S, Brick) {',
    '',
    '  return Brick',
    '',
    '}, {',
    '  requires: [\'brix/base\']',
    '})'
  ].join('\n')
  var contentsOfPkg = [
    '{',
    '  "name": "' + relativePath + '",',
    '  "version": "0.0.1"',
    '}'
  ].join('\n')
  var contentsOfReadme

  if(!fs.existsSync(mopath)) mkpath.sync(mopath)

  fs.writeFileSync(pathJs, contentsOfJs)
  mosaic.log("create", pathJs)

  fs.writeFileSync(pathPackage, contentsOfPkg)
  mosaic.log("create", pathPackage)

  if (family === 'mosaics') {
    pathReadme = path.join(mopath, 'readme.md')
    contentsOfReadme = [
      '# ' + moname,
      '',
      '## 用法',
      '',
      '```html',
      '<div bx-name="mosaics/' + moname + '">',
      '</div>',
      '```'
    ].join('\n')
    fs.writeFileSync(pathReadme, contentsOfReadme)
    mosaic.log("create", pathReadme)
  }

  mosaic.log("inited", mopath)
  process.exit(0)
}