Moved the fetching task to a separate activity; changed the time attributes in StudIPEvent.kt to strings

2023-04-12 18:58:10 +02:00
parent 4f78eb8373
commit d55a304cec
11 changed files with 131 additions and 29 deletions
@@ -0,0 +1,68 @@
+package com.denizk0461.studip.activity
+
+import android.annotation.SuppressLint
+import android.app.Activity
+import android.os.Bundle
+import android.webkit.WebResourceRequest
+import android.webkit.WebView
+import android.webkit.WebViewClient
+import android.widget.Toast
+import androidx.lifecycle.ViewModelProvider
+import com.denizk0461.studip.R
+import com.denizk0461.studip.data.StudIPParser
+import com.denizk0461.studip.databinding.ActivityFetcherBinding
+import com.denizk0461.studip.viewmodel.FetcherViewModel
+import java.net.URLDecoder
+
+class FetcherActivity : Activity() {
+
+    private lateinit var binding: ActivityFetcherBinding
+    private lateinit var viewModel: FetcherViewModel
+
+    /*
+     * Enabling JavaScript is necessary to get the HTML source in this context. As the HTML can only
+     * be accessed once the user has logged in, a simple HTML request would not suffice here.
+     */
+    @SuppressLint("SetJavaScriptEnabled")
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+
+        viewModel = ViewModelProvider.AndroidViewModelFactory(this.application).create(FetcherViewModel::class.java)
+
+        binding = ActivityFetcherBinding.inflate(layoutInflater)
+        setContentView(binding.root)
+
+        binding.webview.settings.apply {
+            javaScriptEnabled = true
+        }
+        binding.webview.webViewClient = object : WebViewClient() {
+            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>');"
+                )
+            }
+        }
+
+        binding.webview.loadUrl("https://elearning.uni-bremen.de/index.php?again=yes")
+
+        binding.fab.setOnClickListener { view ->
+            binding.webview.evaluateJavascript(
+                "(function(){return encodeURI(document.getElementsByTagName('html')[0].innerHTML)})();"
+            ) { p0 ->
+                viewModel.nukeEvents()
+                StudIPParser().parse(URLDecoder.decode(p0, "UTF-8")) { events ->
+                    viewModel.insertEvents(events)
+                    Toast.makeText(this, R.string.toast_fetch_finished, Toast.LENGTH_SHORT).show()
+                    finish()
+                }
+            }
+        }
+    }
+}