Archived
109 lines
4.4 KiB
Kotlin
109 lines
4.4 KiB
Kotlin
package com.denizk0461.studip.activity
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import android.annotation.SuppressLint
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import android.app.Activity
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import android.os.Bundle
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import android.webkit.WebResourceRequest
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import android.webkit.WebView
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import android.webkit.WebViewClient
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import androidx.lifecycle.ViewModelProvider
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import com.denizk0461.studip.R
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import com.denizk0461.studip.data.getThemedColor
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import com.denizk0461.studip.databinding.ActivityFetcherBinding
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import com.denizk0461.studip.viewmodel.FetcherViewModel
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import com.google.android.material.snackbar.Snackbar
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import java.io.IOException
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import java.net.URLDecoder
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/**
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* Activity for allowing the user to log in to access and fetch their schedule from their Stud.IP
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* profile. Launched through a button in the app's settings.
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*/
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class FetcherActivity : Activity() {
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// View binding
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private lateinit var binding: ActivityFetcherBinding
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// View model
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private lateinit var viewModel: FetcherViewModel
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/**
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* Enabling JavaScript is necessary to get the HTML source in this context. As the HTML can only
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* be accessed once the user has logged in, a simple HTML request would not suffice here.
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*/
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@SuppressLint("SetJavaScriptEnabled")
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override fun onCreate(savedInstanceState: Bundle?) {
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super.onCreate(savedInstanceState)
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// Instantiate view model
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viewModel = ViewModelProvider.AndroidViewModelFactory(this.application).create(FetcherViewModel::class.java)
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// Inflate view binding and bind to this activity
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binding = ActivityFetcherBinding.inflate(layoutInflater)
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setContentView(binding.root)
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// Enabling JavaScript. See comment above lint suppression for reason why this is done.
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binding.webview.settings.apply {
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javaScriptEnabled = true
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}
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binding.webview.webViewClient = object : WebViewClient() {
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// Disallow redirecting to prevent the app from launching Chrome after the user logs in
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override fun shouldOverrideUrlLoading(
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view: WebView,
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request: WebResourceRequest
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): Boolean {
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return false
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}
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}
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/*
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* Attempt to load the user-set Stud.IP front page. Redirects to login page if user is
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* not logged in.
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*/
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binding.webview.loadUrl("https://elearning.uni-bremen.de/index.php?again=yes")
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binding.fab.setOnClickListener { view ->
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/*
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* Retrieve encoded HTML via JavaScript function. Encoding is done as otherwise not all
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* symbols will be accurately fetched.
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*/
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binding.webview.evaluateJavascript(
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"(function(){return encodeURI(document.getElementsByTagName('html')[0].innerHTML)})();"
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) { p0 ->
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try {
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// Decode HTML and parse it into a list of StudIPEvent.kt
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// TODO this exception handling and finish() is broken
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viewModel.parse(URLDecoder.decode(p0, "UTF-8"))
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// StudIPParser(application).parse(URLDecoder.decode(p0, "UTF-8")) { events ->
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//
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// // Delete all previously fetched elements
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//// viewModel.nukeEvents()
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//// viewModel.replaceEvents(events)
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//
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// // Insert the list into the database
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//// viewModel.insertEvents(events)
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//
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// // Notify the user that the fetch was successful
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// Toast.makeText(
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// this, R.string.toast_fetch_finished, Toast.LENGTH_SHORT
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// ).show()
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//
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// // Close the activity
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// finish()
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// }
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} catch (e: IOException) {
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// Let the user know that an error occurred
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Snackbar
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.make(
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binding.rootView,
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getString(R.string.fetch_error_snack),
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Snackbar.LENGTH_SHORT
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)
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// Set colours to signify an error
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.setBackgroundTint(theme.getThemedColor(R.attr.colorErrorContainer))
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.setTextColor(theme.getThemedColor(R.attr.colorOnErrorContainer))
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.show()
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}
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}
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}
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}
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} |