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Added comments and cleaned up code in activities and StudIPEvent.kt

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This commit is contained in:
denizk0461
2023-04-21 15:42:21 +02:00
parent 7a6926ff64
commit 2534849329
4 changed files with 117 additions and 108 deletions
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app/src/main/java/com/denizk0461/studip/activity/FetcherActivity.kt
+26 -8
View File
@@ -14,9 +14,15 @@ import com.denizk0461.studip.databinding.ActivityFetcherBinding
import com.denizk0461.studip.viewmodel.FetcherViewModel
import java.net.URLDecoder
/**
* Activity for allowing the user to log in to access and fetch their schedule from their Stud.IP
* profile. Launched through a button in the app's settings.
*/
class FetcherActivity : Activity() {
// View binding
private lateinit var binding: ActivityFetcherBinding
// View model
private lateinit var viewModel: FetcherViewModel
/*
@@ -27,39 +33,51 @@ class FetcherActivity : Activity() {
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
// Instantiate view model
viewModel = ViewModelProvider.AndroidViewModelFactory(this.application).create(FetcherViewModel::class.java)
// Inflate view binding and bind to this activity
binding = ActivityFetcherBinding.inflate(layoutInflater)
setContentView(binding.root)
// Enabling JavaScript. See comment above lint suppression for reason why this is done.
binding.webview.settings.apply {
javaScriptEnabled = true
}
binding.webview.webViewClient = object : WebViewClient() {
// Disallow redirecting to prevent the app from launching Chrome after the user logs in
override fun shouldOverrideUrlLoading(
view: WebView,
request: WebResourceRequest
): Boolean {
return false
}
override fun onPageFinished(view: WebView, url: String) {
binding.webview.loadUrl(
"javascript:window.HtmlViewer.showHTML" +
"('<html>'+document.getElementsByTagName('html')[0].innerHTML+'</html>');"
)
}
}
/*
* Attempt to load the user-set Stud.IP front page. Redirects to login page if user is
* not logged in.
*/
binding.webview.loadUrl("https://elearning.uni-bremen.de/index.php?again=yes")
binding.fab.setOnClickListener { view ->
/*
* Retrieve encoded HTML via JavaScript function. Encoding is done as otherwise not all
* symbols will be accurately fetched.
*/
binding.webview.evaluateJavascript(
"(function(){return encodeURI(document.getElementsByTagName('html')[0].innerHTML)})();"
) { p0 ->
// Delete all previously fetched elements
viewModel.nukeEvents()
// Decode HTML and parse it into a list of StudIPEvent.kt
StudIPParser().parse(URLDecoder.decode(p0, "UTF-8")) { events ->
// Insert the list into the database
viewModel.insertEvents(events)
Toast.makeText(this, R.string.toast_fetch_finished, Toast.LENGTH_SHORT).show()
// Notify the user that the fetch was successful. TODO: notify on error
Toast.makeText(
this, R.string.toast_fetch_finished, Toast.LENGTH_SHORT
).show()
// Close the activity
finish()
}
}