#!/usr/bin/env node

/*
 * Jingo, wiki engine
 * http://github.com/claudioc/jingo
 *
 * Copyright 2013-2017 Claudio Cicali <claudio.cicali@gmail.com>
 * Released under the MIT license
 */
var program = require('commander')
var tools = require('./lib/tools')
var config = require('./lib/config')
var http = require('http')
var fs = require('fs')
var os = require('os')
var semver = require('semver')
var pkg = require('./package')

global.Git = require('./lib/gitmech')

program.version(pkg.version)
       .option('-c, --config <path>', 'Specify the config file')
       .option('-#, --hash-string <string>', 'Create an hash for a string')
       .option('-l, --local', 'Listen on localhost only')
       .option('-s, --sample-config', 'Dumps a config file template and exits')
       .parse(process.argv)

if (program.sampleConfig) {
  console.log(config.sample())
  process.exit(0)
}

if (program.hashString) {
  console.log(tools.hashify(program.hashString))
  process.exit(0)
}

if (!program.config || !fs.existsSync(program.config)) {
  program.help()
  process.exit(-1)
}

if (!config.load(program.config)) {
  console.log('Error: ' + config.getError())
  process.exit(-1)
}

if (!config.validate()) {
  console.log('Error: ' + config.getError())
  process.exit(-1)
}

var refspec = config.get('application').remote.split(/\s+/)

Git.setup(config.get('application').git,
          config.get('application').repository,
          config.get('application').docSubdir,
          refspec, function (err, version) {
            if (err) {
              console.log(err)
              process.exit(-1)
            }

            if (os.platform() === 'darwin' &&
                !config.get('application').skipGitCheck &&
                config.get('pages').title.fromFilename &&
                !semver.satisfies(version, '>=1.8.5')) {
              console.log('Your current setup uses the filename of the wiki page as the page title.')
              console.log('Unfortunately this version of git (' + version + ".x) on OSX doesn't handle")
              console.log('very well non ASCII characters used in filenames, therefore I rather not start.')
              console.log('You can continue anyway, setting `application.skipGitCheck` to true in the')
              console.log('config file but you should better upgrade your git. Thank you.')
              process.exit(-1)
            }

            start()
          })

function start () {
  var app = require('./lib/app').initialize(config)

  var listenAddr = process.env.NW_ADDR || ''
  if (config.get('server').localOnly) {
    listenAddr = 'localhost'
  }

  http.createServer(app).listen(config.get('server').port, listenAddr, function () {
    console.log((new Date()) + ' - Jingo%sserver v%s listening on port %s', config.get('server').localOnly ? ' (local) ' : ' ', program.version(), config.get('server').port)
  })

  if (config.get('application').pushInterval && refspec.length > 0) {
    setInterval(function () {
      Git.pull(function (err) {
        if (err) {
          console.log('Error: ' + err)
        } else {
          Git.push(function (err) {
            if (err) {
              console.log('Error: ' + err)
            }
          })
        }
      })
    }, config.get('application').pushInterval * 1000)
  }
}