[showcase][m]: implemented handling dropped files and opening showcas…

…e page - refs #6

main/index.js

@@ -15,8 +15,10 @@ const { version } = require('../package')
 const windowList = require('./utils/frames/list')
 const toggleWindow = require('./utils/frames/toggle')
 const updater = require('./updates')
+const showcase = require('./utils/showcase')
 const notify = require('./notify')
 const handleException = require('./utils/exception')
+const { error: showError } = require('./dialogs')
 
 // Load the app instance from electron
 const { app } = electron
@@ -42,6 +44,17 @@ app.on('window-all-closed', () => {
   }
 })
 
+const filesDropped = async (event, files) => {
+  event.preventDefault()
+
+  if (process.env.CONNECTION === 'offline') {
+    showError("You're offline")
+    return
+  }
+
+  await showcase(files)
+}
+
 // Chrome Command Line Switches
 app.commandLine.appendSwitch('disable-renderer-backgrounding')
 
@@ -117,6 +130,7 @@ app.on('ready', async () => {
   }
 
   // Define major event listeners for tray
+  tray.on('drop-files', filesDropped)
   tray.on('click', toggleActivity)
   tray.on('double-click', toggleActivity)
 

main/utils/showcase.js

@@ -0,0 +1,84 @@
+// Native
+const path = require('path')
+
+// Packages
+const electron = require('electron')
+const ejse = require('ejs-electron')
+const fs = require('fs-extra')
+const {Dataset, File} = require('data.js')
+const hri = require('human-readable-ids').hri
+const { resolve: resolvePath } = require('app-root-path')
+
+// Utils
+const { error: showError } = require('../dialogs')
+const toggleWindow = require('./frames/toggle')
+
+
+const prepareDatasetFromFile = async filePath => {
+  const pathParts = path.parse(filePath)
+  const file = await File.load(pathParts.base, {basePath: pathParts.dir})
+
+  // List of formats that are known as tabular
+  const knownTabularFormats = ['csv', 'tsv', 'dsv']
+  if (knownTabularFormats.includes(file.descriptor.format)) {
+    await file.addSchema()
+  }
+
+  let dpName, dpTitle
+  dpName = file.descriptor.name.replace(/\s+/g, '-').toLowerCase()
+  // Add human readable id so that this packge does not conflict with other
+  // packages (name is coming from the file name which could just be
+  // data.csv)
+  dpName += '-' + hri.random()
+
+  // Make unslugifies version for title:
+  dpTitle = dpName.replace(/-+/g, ' ')
+  dpTitle = dpTitle.charAt(0).toUpperCase() + dpTitle.slice(1)
+
+  const metadata = {
+    name: dpName,
+    title: dpTitle,
+    resources: []
+  }
+  const dataset = await Dataset.load(metadata)
+  dataset.addResource(file)
+  return dataset
+}
+
+
+module.exports = async (files) => {
+  if (files.length === 1) {
+    const path_ = files[0]
+    if (fs.lstatSync(path_).isFile()) {
+      const pathParts = path.parse(path_)
+      if (pathParts.base === 'datapackage.json') {
+        showError('Sorry, currently you can drop in a single file. Data Package support is coming!')
+      }
+      const dataset = await prepareDatasetFromFile(path_)
+      ejse.data('dataset', dataset.descriptor)
+      ejse.data('dpId', JSON.stringify(dataset.descriptor).replace(/\\/g, '\\\\').replace(/\'/g, "\\'"))
+      const win = new electron.BrowserWindow({
+        width: 800,
+        height: 700,
+        title: 'Welcome to DataHub',
+        resizable: false,
+        center: true,
+        frame: false,
+        show: false,
+        fullscreenable: false,
+        maximizable: false,
+        titleBarStyle: 'hidden-inset',
+        webPreferences: {
+          backgroundThrottling: false,
+          devTools: true
+        }
+      })
+      win.loadURL('file://' + resolvePath('./main/pages/showcase.ejs'))
+      toggleWindow(null, win)
+    } else {
+      showError('Sorry, currently you can drop in a single file. Directory support is coming!')
+    }
+  } else if (files.length > 1) {
+    showError('Sorry, currently you can drop in a single file. Multiple files support is coming!')
+  }
+}

package.json

@@ -41,12 +41,14 @@
   "dependencies": {
     "app-root-path": "^2.0.1",
     "child-process-promise": "^2.2.1",
+    "data.js": "^0.9.10",
     "ejs-electron": "^2.0.1",
     "electron-is-dev": "^0.3.0",
     "electron-updater": "^2.16.1",
     "fix-path": "^2.1.0",
     "fs-extra": "^4.0.2",
     "global-packages": "^1.0.2",
+    "human-readable-ids": "^1.0.3",
     "just-compare": "^1.2.1",
     "mkdirp": "^0.5.1",
     "ms": "^2.0.0",