Fix content tree extraction

src/main.rs

@@ -72,7 +72,7 @@ enum Object {
 		url: URL
 	},
 	Video {
-		url: String,
+		url: URL,
 	},
 	Generic {
 		name: String,
@@ -93,7 +93,7 @@ impl Object {
 			Wiki { name, .. } => &name,
 			ExerciseHandler { name, .. } => &name,
 			PluginDispatch { name, .. } => &name,
-			Video { url } => &url,
+			Video { url } => &url.url,
 			Generic { name, .. } => &name,
 		}
 	}
@@ -108,7 +108,7 @@ impl Object {
 			Wiki { url, .. } => &url,
 			ExerciseHandler { url, .. } => &url,
 			PluginDispatch { url, .. } => &url,
-			Video { .. } => unreachable!(),
+			Video { url } => &url,
 			Generic { url, .. } => &url,
 		}
 	}
@@ -129,8 +129,8 @@ impl Object {
 	}
 
 	fn from_link(item: ElementRef, link: ElementRef) -> Self {
-		let mut name = link.text().collect::<String>().replace('/', "-");
+		let mut name = link.text().collect::<String>().replace('/', "-").trim().to_owned();
-		let url = URL::from_href(link.value().attr("href").unwrap());
+		let mut url = URL::from_href(link.value().attr("href").unwrap());
 
 		if url.thr_pk.is_some() {
 			return Thread {
@@ -139,6 +139,61 @@ impl Object {
 		}
 
 		if url.url.starts_with("https://ilias.studium.kit.edu/goto.php") {
+			if url.target.as_ref().map(|x| x.starts_with("wiki_")).unwrap_or(false) {
+				return Wiki {
+					name,
+					url // TODO: insert ref_id here
+				};
+			}
+			if url.target.as_ref().map(|x| x.starts_with("root_")).unwrap_or(false) {
+				// magazine link
+				return Generic {
+					name,
+					url
+				};
+			}
+			if url.target.as_ref().map(|x| x.starts_with("crs_")).unwrap_or(false) {
+				let ref_id = url.target.as_ref().unwrap().split('_').nth(1).unwrap();
+				url.ref_id = ref_id.to_owned();
+				return Course {
+					name,
+					url
+				};
+			}
+			if url.target.as_ref().map(|x| x.starts_with("frm_")).unwrap_or(false) {
+				// TODO: extract post link? (this codepath should only be hit when parsing the content tree)
+				let ref_id = url.target.as_ref().unwrap().split('_').nth(1).unwrap();
+				url.ref_id = ref_id.to_owned();
+				return Forum {
+					name,
+					url
+				};
+			}
+			if url.target.as_ref().map(|x| x.starts_with("lm_")).unwrap_or(false) {
+				// fancy interactive task
+				return Generic {
+					name,
+					url
+				};
+			}
+			if url.target.as_ref().map(|x| x.starts_with("fold_")).unwrap_or(false) {
+				let ref_id = url.target.as_ref().unwrap().split('_').nth(1).unwrap();
+				url.ref_id = ref_id.to_owned();
+				return Folder {
+					name,
+					url
+				};
+			}
+			if url.target.as_ref().map(|x| x.starts_with("file_")).unwrap_or(false) {
+				let target = url.target.as_ref().unwrap();
+				if !target.ends_with("download") {
+					// download page containing metadata
+					// TODO: perhaps process that? not really needed
+					return Generic {
+						name,
+						url
+					};
+				} else {
 					let item_prop = Selector::parse("span.il_ItemProperty").unwrap();
 					let mut item_props = item.select(&item_prop);
 					let ext = item_props.next().unwrap();
@@ -150,20 +205,23 @@ impl Object {
 					}
 					return File { name: format!("{}.{}", name, ext.text().collect::<String>().trim()), url };
 				}
+			}
+			return Generic { name, url };
+		}
 
 		if url.cmd.as_ref().map(|x| &**x) == Some("showThreads") {
 			return Forum { name, url };
 		}
 
-		match &*url.baseClass {
+		match &*url.baseClass.to_ascii_lowercase() {
-			"ilExerciseHandlerGUI" => ExerciseHandler { name, url },
+			"ilexercisehandlergui" => ExerciseHandler { name, url },
-			"ililWikiHandlerGUI" => Wiki { name, url },
+			"ililwikihandlergui" => Wiki { name, url },
 			"ilrepositorygui" => match url.cmd.as_deref() {
 				Some("view") => Folder { name, url },
 				Some(_) => Generic { name, url },
 				None => Course { name, url },
 			},
-			"ilObjPluginDispatchGUI" => PluginDispatch { name, url },
+			"ilobjplugindispatchgui" => PluginDispatch { name, url },
 			_ => Generic { name, url }
 		}
 	}
@@ -181,10 +239,26 @@ struct URL {
 	thr_pk: Option<String>,
 	pos_pk: Option<String>,
 	ref_id: String,
+	target: Option<String>,
 }
 
 #[allow(non_snake_case)]
 impl URL {
+	fn raw(url: String) -> Self {
+		URL {
+			url,
+			baseClass: String::new(),
+			cmdClass: None,
+			cmdNode: None,
+			cmd: None,
+			forwardCmd: None,
+			thr_pk: None,
+			pos_pk: None,
+			ref_id: String::new(),
+			target: None,
+		}
+	}
+
 	fn from_href(href: &str) -> Self {
 		let url = Url::parse(&format!("http://domain/{}", href)).unwrap();
 		let mut baseClass = String::new();
@@ -195,6 +269,7 @@ impl URL {
 		let mut thr_pk = None;
 		let mut pos_pk = None;
 		let mut ref_id = String::new();
+		let mut target = None;
 		for (k, v) in url.query_pairs() {
 			match &*k {
 				"baseClass" => baseClass = v.into_owned(),
@@ -205,6 +280,7 @@ impl URL {
 				"thr_pk" => thr_pk = Some(v.into_owned()),
 				"pos_pk" => pos_pk = Some(v.into_owned()),
 				"ref_id" => ref_id = v.into_owned(),
+				"target" => target = Some(v.into_owned()),
 				_ => {}
 			}
 		}
@@ -217,7 +293,8 @@ impl URL {
 			forwardCmd,
 			thr_pk,
 			pos_pk,
-			ref_id
+			ref_id,
+			target,
 		}
 	}
 }
@@ -301,14 +378,19 @@ impl ILIAS {
 	}
 
 	async fn get_html(&self, url: &str) -> Result<Html> {
-		let text = self.client.get(url).send().await?.text().await?;
+		let text = if url.starts_with("http") || url.starts_with("ilias.studium.kit.edu") {
+			self.client.get(url).send().await?.text().await?
+		} else {
+			let url = format!("{}{}", ILIAS_URL, url);
+			self.client.get(&url).send().await?.text().await?
+		};
 		Ok(Html::parse_document(&text))
 	}
 
 	async fn get_html_fragment(&self, url: &str) -> Result<Html> {
 		let text = self.client.get(url).send().await?.text().await?;
 		let html = Html::parse_fragment(&text);
-		// TODO: have this above too
+		// TODO: have this in get_html too
 		if html.select(&alert_danger).next().is_some() {
 			//println!("{}", text);
 			Err("ILIAS error".into())
@@ -318,16 +400,20 @@ impl ILIAS {
 	}
 
 	async fn get_course_content(&self, url: &URL) -> Result<Vec<Object>> {
-		let html = self.get_html(&format!("{}{}", ILIAS_URL, url.url)).await?;
+		let html = self.get_html(&url.url).await?;
 		Ok(ILIAS::get_items(&html)?)
 	}
 
-	async fn get_course_content_tree(&self, ref_id: &str) -> Result<Vec<Object>> {
+	async fn get_course_content_tree(&self, ref_id: &str, cmd_node: &str) -> Result<Vec<Object>> {
+		// TODO: this magically does not return sub-folders
+		// opening the same url in browser does show sub-folders..
 		let url = format!(
-			"{}ilias.php?ref_id={}&cmdClass=ilobjrootfoldergui&cmd=showRepTree&cmdNode=uf:o4&baseClass=ilRepositoryGUI&cmdMode=asynch&exp_cmd=getNodeAsync&node_id=exp_node_rep_exp_{}&exp_cont=il_expl2_jstree_cont_rep_exp&searchterm=",
+			"{}ilias.php?ref_id={}&cmdClass=ilobjcoursegui&cmd=showRepTree&cmdNode={}&baseClass=ilRepositoryGUI&cmdMode=asynch&exp_cmd=getNodeAsync&node_id=exp_node_rep_exp_{}&exp_cont=il_expl2_jstree_cont_rep_exp&searchterm=",
-			ILIAS_URL, ref_id, ref_id
+			ILIAS_URL, ref_id, cmd_node, ref_id
 		);
+		if self.opt.verbose > 0 {
 			println!("Loading {:?}..", url);
+		}
 		let html = self.get_html_fragment(&url).await?;
 		let mut items = Vec::new();
 		for link in html.select(&a) {
@@ -345,7 +431,11 @@ impl ILIAS {
 		if self.opt.verbose > 0 {
 			println!("Downloading {}", url);
 		}
+		if url.starts_with("http") || url.starts_with("ilias.studium.kit.edu") {
 			Ok(self.client.get(url).send().await?)
+		} else {
+			Ok(self.client.get(&format!("{}{}", ILIAS_URL, url)).send().await?)
+		}
 	}
 }
 
@@ -367,9 +457,8 @@ async fn main() {
 			std::process::exit(77);
 		}
 	};
-	// this is useless, further requests still error
+	// need this to get the content tree
-	//println!("Loading root..");
+	let _ = ilias.client.get("https://ilias.studium.kit.edu/ilias.php?baseClass=ilRepositoryGUI&cmd=frameset&set_mode=tree&ref_id=1").send().await;
-	//ilias.client.get("https://ilias.studium.kit.edu/ilias.php?ref_id=1&cmd=showRepTree&cmdClass=ilobjrootfoldergui&cmdNode=uf:o4&baseClass=ilRepositoryGUI&cmdMode=asynch&exp_cmd=getNodeAsync&node_id=&exp_cont=il_expl2_jstree_cont_rep_exp&searchterm=").send().await.unwrap();
 	let ilias = Arc::new(ilias);
 	let desktop = ilias.personal_desktop().await.unwrap();
 	for item in desktop.items {
@@ -385,6 +474,8 @@ async fn main() {
 	while *TASKS_QUEUED.lock() > 0 {
 		tokio::time::delay_for(Duration::from_millis(500)).await;
 	}
+	// restore fast page loading times
+	let _ = ilias.client.get("https://ilias.studium.kit.edu/ilias.php?baseClass=ilRepositoryGUI&cmd=frameset&set_mode=flat&ref_id=1").send().await;
 }
 
 lazy_static!{
@@ -411,6 +502,7 @@ fn process_gracefully(ilias: Arc<ILIAS>, path: PathBuf, obj: Object) -> impl std
 #[allow(non_upper_case_globals)]
 mod selectors {
 	use lazy_static::lazy_static;
+	use regex::Regex;
 	use scraper::Selector;
 	// construct CSS selectors once
 	lazy_static!{
@@ -427,6 +519,9 @@ mod selectors {
 		pub static ref span_small: Selector = Selector::parse("span.small").unwrap();
 		pub static ref forum_pages: Selector = Selector::parse("div.ilTableNav > table > tbody > tr > td > a").unwrap();
 		pub static ref alert_danger: Selector = Selector::parse("div.alert-danger").unwrap();
+		pub static ref tree_highlighted: Selector = Selector::parse("span.ilHighlighted").unwrap();
+
+		pub static ref cmd_node_regex: Regex = Regex::new(r#"cmdNode=uf:\w\w"#).unwrap();
 	}
 }
 use crate::selectors::*;
@@ -435,7 +530,7 @@ use crate::selectors::*;
 //async fn process(ilias: Arc<ILIAS>, path: PathBuf, obj: Object) {
 fn process(ilias: Arc<ILIAS>, path: PathBuf, obj: Object) -> impl std::future::Future<Output = Result<()>> + Send { async move {
 	if ilias.opt.verbose > 0 {
-		println!("Syncing {} {}..", obj.kind(), path.strip_prefix(&ilias.opt.output).unwrap().to_string_lossy());
+		println!("Syncing {} {}.. {}", obj.kind(), path.strip_prefix(&ilias.opt.output).unwrap().to_string_lossy(), obj.url().url);
 	}
 	match &obj {
 		Course { url, name } => {
@@ -444,14 +539,19 @@ fn process(ilias: Arc<ILIAS>, path: PathBuf, obj: Object) -> impl std::future::F
 					Err(e)?;
 				}
 			}
-			let content_tree = ilias.get_course_content_tree(&url.ref_id).await;
+			let html = ilias.download(&url.url).await?.text().await?;
+			let cmd_node = cmd_node_regex.find(&html).ok_or::<Error>("can't find cmdNode".into())?.as_str()[8..].to_owned();
+			let content_tree = ilias.get_course_content_tree(&url.ref_id, &cmd_node).await;
 			let content = match content_tree {
 				Ok(tree) => tree,
 				Err(e) => {
-					// some folders are hidden and can only be found via the RSS feed / recent activity / content tree sidebar
+					// some folders are hidden on the course page and can only be found via the RSS feed / recent activity / content tree sidebar
-					// TODO: this is never the case for folders?
+					// TODO: this is probably never the case for folders?
+					if html.contains(r#"input[name="cmd[join]""#) {
+						return Ok(()); // ignore groups we are not in
+					}
 					println!("Warning: {:?} falling back to incomplete course content extractor! {}", name, e.display_chain());
-					ilias.get_course_content(&url).await?
+					ilias.get_course_content(&url).await? // TODO: perhaps don't download almost the same content 3x
 				}
 			};
 			for item in content {
@@ -530,7 +630,7 @@ fn process(ilias: Arc<ILIAS>, path: PathBuf, obj: Object) -> impl std::future::F
 						println!("Found video: {}", title);
 					}
 					let video = Video {
-						url: link.value().attr("href").unwrap().to_owned()
+						url: URL::raw(link.value().attr("href").unwrap().to_owned())
 					};
 					let ilias = Arc::clone(&ilias);
 					task::spawn(async {
@@ -553,7 +653,7 @@ fn process(ilias: Arc<ILIAS>, path: PathBuf, obj: Object) -> impl std::future::F
 				}
 				return Ok(());
 			}
-			let url = format!("{}{}", ILIAS_URL, url);
+			let url = format!("{}{}", ILIAS_URL, url.url);
 			let data = ilias.download(&url);
 			let html = data.await?.text().await?;
 			if ilias.opt.verbose > 1 {