var util = require('util')

var split = require('split')
var Promise = require('bluebird')

var wire = require('../wire')
var pathutil = require('./pathutil')

var devutil = module.exports = Object.create(null)

devutil.vendorFiles = function(identity) {
  return {
    bin: {
      src: pathutil.vendor(util.format(
        'remote/libs/%s/remote', identity.abi))
    , dest: '/data/local/tmp/remote'
    , comm: 'remote'
    , mode: 0755
    }
  , lib: {
      src: pathutil.vendor(util.format(
        'remote/external/android-%d/remote_external.so', identity.sdk))
    , dest: '/data/local/tmp/remote_external.so'
    , mode: 0755
    }
  }
}

devutil.ensureUnusedPort = function(adb, serial, port) {
  function closedError(err) {
    return err.message === 'closed'
  }
  return adb.openTcpAsync(serial, port)
    .then(function(conn) {
      conn.end()
      throw new Error(util.format('Port "%d" should be unused', port))
    })
    .catch(closedError, function(err) {
      return Promise.resolve(port)
    })
}

devutil.waitForPort = function(adb, serial, port) {
  function closedError(err) {
    return err.message === 'closed'
  }
  return adb.openTcpAsync(serial, port)
    .then(function(conn) {
      conn.end()
      return port
    })
    .catch(closedError, function(err) {
      return Promise.delay(100)
        .then(function() {
          return devutil.waitForPort(adb, serial, port)
        })
    })
}

devutil.killProcsByComm = function(adb, serial, comm, bin) {
  return adb.shellAsync(serial, ['ps', comm])
    .then(function(out) {
      return new Promise(function(resolve, reject) {
        var header = false
          , killables = []
        out.pipe(split())
          .on('data', function(chunk) {
            if (header) {
              header = false
            }
            else {
              var cols = chunk.toString().split(/\s+/)
              if (cols.pop() === bin) {
                killables.push(cols[1])
              }
            }
          })
          .on('end', function() {
            resolve(killables)
          })
      })
    })
    .then(function(killables) {
      if (killables.length) {
        return adb.shellAsync(serial, ['kill'].concat(killables))
          .then(function(out) {
            return new Promise(function(resolve, reject) {
              out.on('end', resolve)
            })
          })
      }
    })
}

devutil.startProp = function(adb, serial, cmd) {
  return adb.openTcpAsync(options.serial, port)
    .then(function(conn) {
      conn.end()
    })
    .catch(function(err) {
      if (err.message === 'closed') {
        var cmd = [
          vendor.bin.dest
        , '--lib', vendor.lib.dest
        , '--listen-http', port
        ]
        return adb.shellAsync(options.serial, cmd)
          .then(function(out) {

            out.on('end', function() {
              log.fatal('')
            })
          })
      }
      else {
        throw err
      }
    })
}

devutil.platform = function(platform) {
  switch (platform) {
    case 'android':
      return wire.DevicePlatform.ANDROID
    default:
      throw new Error(util.format('Unmapped platform "%s"', platform))
  }
}

devutil.manufacturer = function(manufacturer) {
  switch (manufacturer.toUpperCase()) {
    case 'SONY':
    case 'SONY ERICSSON':
      return wire.DeviceManufacturer.SONY
    case 'FUJITSU':
      return wire.DeviceManufacturer.FUJITSU
    case 'HTC':
      return wire.DeviceManufacturer.HTC
    case 'SHARP':
      return wire.DeviceManufacturer.SHARP
    case 'LGE':
      return wire.DeviceManufacturer.LG
    case 'SAMSUNG':
      return wire.DeviceManufacturer.SAMSUNG
    case 'ASUS':
      return wire.DeviceManufacturer.ASUS
    default:
      throw new Error(util.format('Unmapped manufacturer "%s"', manufacturer))
  }
}

devutil.makeIdentity = function(serial, properties) {
  var model = properties['ro.product.model']
    , brand = properties['ro.product.brand']
    , manufacturer = properties['ro.product.manufacturer']
    , version = properties['ro.build.version.release']
    , sdk = properties['ro.build.version.sdk']
    , abi = properties['ro.product.cpu.abi']

  // Remove brand prefix for consistency
  if (model.substr(0, brand.length) === brand) {
    model = model.substr(brand.length)
  }

  // Remove manufacturer prefix for consistency
  if (model.substr(0, manufacturer.length) === manufacturer) {
    model = model.substr(manufacturer.length)
  }

  // Clean up remaining model name
  // model = model.replace(/[_ ]/g, '')

  return {
    serial: serial
  , platform: devutil.platform('android')
  , manufacturer: devutil.manufacturer(manufacturer)
  , model: model
  , version: version
  , abi: abi
  , sdk: sdk
  }
}