const Router = require('koa-router');
const fs = require('fs');
const path = require('path');
const url = require('url');
const request = require('request')
const router = new Router();
const sys = require('../config/sys')
const sceneDir = path.join(__dirname, '../', sys.static_dir, sys.scene_dir)
const uploadFile = require('../util/upload')
const copyDir = require('../util/copydir')
const upqiniu = require('../util/upqiniu')

// 获取一个文件夹所有第一子文件夹
function getFiles() {
  return new Promise((resolve, reject) => {
    fs.readdir(sceneDir, (err, files) => {
      if (err) {
        reject(err)
      } else {
        resolve(files)
      }
    })
  })
}

// 删除文件夹所有文件
function deleteFolder(dir) {
  var files = [];
  if (fs.existsSync(dir)) {
    files = fs.readdirSync(dir);
    files.forEach(function (file, index) {
      var curPath = dir + "/" + file;
      if (fs.statSync(curPath).isDirectory()) { // recurse
        deleteFolder(curPath);
      } else {
        fs.unlinkSync(curPath);
      }
    });
    fs.rmdirSync(dir);
  }
}

// 清除一个json复合正则的字段
function clearRgFileds(obj, rg) {
  let type = Object.prototype.toString.call(obj)
  if (type === '[object Object]') {
    for (let key in obj) filter(obj[key], key)
  } else if (type === '[object Array]') {
    for (let i = 0; i < obj.length; i++) filter(obj[i], i)
  }

  function filter (filed, key) {
    let filedType = Object.prototype.toString.call(obj[key])
    if (filedType === '[object Object]' || filedType === '[object Array]') {
      clearRgFileds(obj[key], rg)
    } else if (filed && rg.test(filed.toString())) {
      if (type === '[object Object]') {
        delete obj[key]
      } else {
        obj.splice(key, 1)
      }
    }
  }
}


async function savehots(hots = {}, name) {
  let dataFile = 'data2.js'
  let dataPath = path.join(sceneDir, name, dataFile)
  let infoFile = 'hot/js/data.js'
  let infoPath = path.join(sceneDir, name, infoFile)
  let data = JSON.parse(fs.readFileSync(dataPath))
  let hotJSON = {}
  let infoJSON = {}

  Object.keys(hots).forEach(hotKey => {
    hotJSON[hotKey] = {
      position: hots[hotKey].position,
      rotation: hots[hotKey].rotation,
      link: `//www.4dmodel.com/SuperTwo/hot_online/index.html?m=${hotKey}`
    }

    infoJSON[hotKey] = hots[hotKey].infoAttribute || ({
      title: '',
      content: '',
      iframes: [],
      modules: [],
      images: [],
      videos: []
    })
  })

  data.hots = hotJSON

  fs.writeFileSync(dataPath, JSON.stringify(data))
  fs.writeFileSync(infoPath, JSON.stringify(infoJSON))

  await upqiniu(name, dataFile)
  await upqiniu(name, infoFile)
}

async function saveGuide(guides = [], name) {
  let dataFile = 'data2.js'
  let someFile = 'someData.json'
  let dataPath = path.join(sceneDir, name, dataFile)
  let somDataPath = path.join(sceneDir, name, someFile)
  let data = JSON.parse(fs.readFileSync(dataPath));
  let somData = JSON.parse(fs.readFileSync(somDataPath))
  let audio = {}
  let images = []

  somData.model.images.forEach(i => i && (i.thumbnail_signed_src || images.push(i)))
  guides.forEach(i => i.thumbnail_signed_src && images.push(i))
  

images.forEach(guide => {
    try {
      audio[JSON.parse(guide.metadata).scan_id] = {
        time: 40000
      }
    } catch (e) {
      
    }
  })

  somData.model.images = images
  data.audio = audio
  fs.writeFileSync(somDataPath, JSON.stringify(somData))
  fs.writeFileSync(dataPath, JSON.stringify(data))

  await upqiniu(name, dataFile)
  await upqiniu(name, someFile)
}

async function saveMusics(musics = {}, name) {
  let dataFile = 'data2.js'
  let dataPath = path.join(sceneDir, name, dataFile)
  let data = JSON.parse(fs.readFileSync(dataPath));

  data.tourAudio = musics

  fs.writeFileSync(dataPath, JSON.stringify(data))
  
  await upqiniu(name, dataFile)
}

async function saveInfo(info, name) {
  let dataFile = 'data2.js'
  let someFile = 'someData.json'
  let dataPath = path.join(sceneDir, name, dataFile)
  let data = JSON.parse(fs.readFileSync(dataPath));
  let somDataPath = path.join(sceneDir, name, someFile);
  let somData = JSON.parse(fs.readFileSync(somDataPath));

  
  somData.model.name = info.name
  somData.model.summary = info.summary
  somData.model.camera_start = info.camera_start

  Object.keys(info).forEach(key => {
    somData[key] = info[key]
  })

  // somData.backgroundMusic = info.backgroundMusic
  // somData.hoticon = info.hoticon
  somData.loadlogo = info.loadlogo === "true" ? true : false

  data.weixinDesc = info.weixinDesc

  fs.writeFileSync(somDataPath, JSON.stringify(somData))
  fs.writeFileSync(dataPath, JSON.stringify(data))

  await upqiniu(name, dataFile)
  await upqiniu(name, someFile)
}

// 添加场景
router.post('/addscene', async ctx => {
  let name = ctx.request.body.name
  let files = await getFiles()
  let index = files.findIndex(file => file === name)

  if (~index) {
    return ctx.body = {
      msg: '该场景已存在，请更改场景名称', 
      code: 500
    }
  }

  await new Promise((resolve, reject) => {
    fs.mkdir(path.join(sceneDir, name), err => {
      if (err) {
        reject(err)
      } else {
        resolve()
      }
    })
  })
  
  ctx.body = {
    content: '成功创建场景',
    code: 200
  }
})

// 删除场景
router.post('/delscene', async ctx => {
  let dir = path.join(sceneDir, ctx.request.body.name)
  deleteFolder(dir)

  ctx.body = {
    code: 200
  }
})

// 获取所有场景
router.get('/list', async ctx => {
  let files = await getFiles()

  let content = files.map(file => {
    let name = ''
    try {
      let somedata = JSON.parse(fs.readFileSync(path.join(sceneDir, file, 'someData.json')))
      name = somedata.name || somedata.model.name
      
    } catch (e) {
    }

    return {
      name: file,
      title: name,
      query: url.format({
        protocol: sys.protocol,
        host: 'www.4dmodel.com',
        port: sys.port,
        pathname: sys.scene_query,
        query: {m: file}
      }),
      edit: url.format({
        protocol: sys.protocol,
        host: sys.host,
        port: sys.port,
        pathname: sys.scene_edit,
        query: { m: file }
      })
    }
  })
  
  ctx.body = {
    content,
    code: 200
  }
})

// 转化运行场景需要的参数
router.post('/transform', async ctx => {
  let url = ctx.request.body.url
  let modelDataUrl = path.join(sceneDir, ctx.request.body.name, 'modeldata.js')
  let someDataUrl = path.join(sceneDir, ctx.request.body.name, 'someData.json')
  let readFile
  let transformData

  if (fs.existsSync(someDataUrl)) {
    readFile = 'someData.json'
    transformData = fs.readFileSync(someDataUrl)
  } else if (fs.existsSync(modelDataUrl)) {
    readFile = 'modeldata.js'
    transformData = fs.readFileSync(modelDataUrl)
  } else {
    transformData = await new Promise((resolve, reject) => {
      request(url, function(err, res, body) {
        if (err) {
          reject(err)
        } else {
          resolve(body)
        }
      })
    })

    readFile = url
  }

  if (!transformData) {
    return ctx.body = {
      msg: '该场景缺少核心启动文件！',
      code: 500
    }
  }

  try {
    transformData = JSON.parse(transformData)
  } catch (e) {
    return ctx.body = {
      code: 500,
      msg: readFile + '不是有效的json格式文件！'
    }
  }

  transformData = transformSomeData(transformData)
  transformData.model.sid = ctx.request.body.name

  let hotUrl = path.join(sceneDir, ctx.request.body.name, 'hot')
  if (!fs.existsSync(hotUrl)) {
    await new Promise((resolve, reject) => {
      copyDir(path.join(__dirname, '../', sys.static_dir, './hottemp'), hotUrl, resolve)
    })
  }

  let dataPath = path.join(sceneDir, ctx.request.body.name, 'data2.js')
  fs.writeFileSync(dataPath, '{}')

  await upqiniu(ctx.request.body.name, 'data2.js')

  fs.writeFileSync(someDataUrl, JSON.stringify(transformData))

  await upqiniu(ctx.request.body.name, 'someData.json')

  ctx.body = { code: 200 }
})


// 保存配置
router.post('/savesetting', async ctx => {
  let { name, hots, guides = [], info, tourAudio = {} } = ctx.request.body

  if (!guides.length) {
    let ret = []
    for (let key in guides) {
      ret.push(guides[key])
    }
    guides = ret
  }

  await saveGuide(guides, name)
  await savehots(hots, name)
  await saveInfo(info, name)
  await saveMusics(tourAudio, name)

  ctx.body = {
    code: 200, 
    msg: '修改成功!'
  }
})

// 上传文件
router.post('/uploadFile', async ctx => {
  let result = await uploadFile(ctx, sceneDir);
  let file = result.file.substr(('/'+result.name+'/').length);
  let qiniuLocal = await upqiniu(result.name, file);

  ctx.body = {
    code: 200,
    msg: '文件上传成功',
    content: qiniuLocal
  }
})


router.get('/getSomeData', async ctx => {
  let url = ctx.request.query.url
  let data = await new Promise((resolve, reject) => {
    request(url, function (err, res, body) {
      if (err) {
        reject(err)
      } else {
        resolve(body)
      }
    })
  })

  try {
    transformData = transformSomeData(JSON.parse(data))
  } catch (e) {
    return ctx.body = {
      code: 500,
      msg: url + '不是有效的json格式文件！'
    }
  }

  ctx.body = transformData
})



function transformSomeData(transformData) {

  if (!transformData.model) {
    transformData = {
      model: transformData
    }
    delete transformData.model.icon
    delete transformData.model.camera_start
    transformData.model.address = JSON.stringify(transformData.model.address)
  }

  clearRgFileds(transformData, /\/\//)

  let delFileds = [
    'enable_social_sharing', 'social_sharing_enabled', 'account_social_sharing_default',
    'owner', 'address', 'is_vr', 'vision_version', 'created', 'unit_type', 'owner'
  ]
  let assigFileds = {
    files: {
      templates: ['data/{{number}}/{{filename}}']
    },

  }

  delFileds.forEach(filed => {
    delete transformData[filed]
    delete transformData.model[filed]
  })
  Object.keys(assigFileds).forEach(filed => transformData[filed] = assigFileds[filed])

  if (!transformData.model.camera_start) {
    for (let i = 0; i < transformData.model.images.length; i++) {
      let metadata = JSON.parse(transformData.model.images[0].metadata)

      if (metadata.scan_id) {
        transformData.model.camera_start = {
          camera: {
            "zoom": -1,
            "quaternion": [
              metadata.camera_quaternion.x,
              metadata.camera_quaternion.y,
              metadata.camera_quaternion.z,
              metadata.camera_quaternion.w
            ]
          },
          pano: {
            "uuid": metadata.scan_id
          },
          "mode": 0
        }
        break;
      }
    }

  }

  let deufaltPlayer = {
    "presented_by": true,
    "highlight_reel": true,
    "floor_plan": true,
    "tour_buttons": true,
    "dollhouse": true,
    "fast_transitions": false,
    "autoplay": false,
  }

  transformData.model.player_options = transformData.model.player_options || {};
  Object.keys(deufaltPlayer).forEach(key => transformData.model.player_options[key] = deufaltPlayer[key])

  transformData.model.images = [transformData.model.images[0]]

  return transformData
}


module.exports = exports = {router};