[BE][Classroom] Parse & send courseid in the user courses list

backend/Cargo.lock

@@ -159,6 +159,7 @@ dependencies = [
  "lazy_static",
  "log",
  "once_cell",
+ "regex",
  "reqwest",
  "rocket",
  "scraper",
@@ -1577,9 +1578,9 @@ dependencies = [
 
 [[package]]
 name = "memchr"
-version = "2.5.0"
+version = "2.6.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2dffe52ecf27772e601905b7522cb4ef790d2cc203488bbd0e2fe85fcb74566d"
+checksum = "f665ee40bc4a3c5590afb1e9677db74a508659dfd71e126420da8274909a0167"
 
 [[package]]
 name = "memoffset"
@@ -2335,14 +2336,14 @@ dependencies = [
 
 [[package]]
 name = "regex"
-version = "1.9.3"
+version = "1.10.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "81bc1d4caf89fac26a70747fe603c130093b53c773888797a6329091246d651a"
+checksum = "380b951a9c5e80ddfd6136919eef32310721aa4aacd4889a8d39124b026ab343"
 dependencies = [
  "aho-corasick",
  "memchr",
- "regex-automata 0.3.6",
- "regex-syntax 0.7.4",
+ "regex-automata 0.4.3",
+ "regex-syntax 0.8.2",
 ]
 
 [[package]]
@@ -2356,13 +2357,13 @@ dependencies = [
 
 [[package]]
 name = "regex-automata"
-version = "0.3.6"
+version = "0.4.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fed1ceff11a1dddaee50c9dc8e4938bd106e9d89ae372f192311e7da498e3b69"
+checksum = "5f804c7828047e88b2d32e2d7fe5a105da8ee3264f01902f796c8e067dc2483f"
 dependencies = [
  "aho-corasick",
  "memchr",
- "regex-syntax 0.7.4",
+ "regex-syntax 0.8.2",
 ]
 
 [[package]]
@@ -2373,9 +2374,9 @@ checksum = "f162c6dd7b008981e4d40210aca20b4bd0f9b60ca9271061b07f78537722f2e1"
 
 [[package]]
 name = "regex-syntax"
-version = "0.7.4"
+version = "0.8.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e5ea92a5b6195c6ef2a0295ea818b312502c6fc94dde986c5553242e18fd4ce2"
+checksum = "c08c74e62047bb2de4ff487b251e4a92e24f48745648451635cec7d591162d9f"
 
 [[package]]
 name = "reqwest"

backend/Cargo.toml

@@ -22,5 +22,6 @@ env_logger = "0.10.0"
 bardecoder = "0.5.0"
 image = "0.24.7"
 imageproc = "0.23.0"
+regex = "1.10.2"
 
 

backend/src/controller/person/mod.rs

@@ -4,7 +4,6 @@ use log::{error, info};
 use reqwest::Client;
 use rocket::http::Status;
 use rocket::serde::json::Json;
-use sqlx::Connection;
 
 use crate::json_result::JsonResult;
 use crate::model::person::{PersonCreate, PersonLink};

backend/src/main.rs

@@ -1,9 +1,7 @@
 use cors::Cors;
 use once_cell::sync::OnceCell;
 use sqlx::mysql::MySqlPoolOptions;
-use sqlx::Connection;
 use sqlx::MySql;
-use sqlx::MySqlConnection;
 use sqlx::Pool;
 use std::env;
 use std::time::Instant;

backend/src/online_classroom/get_courses.rs

@@ -1,10 +1,12 @@
 use super::session::request;
+use regex::Regex;
 use scraper::{Html, Selector};
 use serde::Serialize;
 
 #[derive(Debug, Serialize)]
 pub struct ClassroomCourse {
     name: String,
+    course_id: i32,
 }
 
 /// Returns all the courses the user is enrolled in
@@ -59,7 +61,62 @@ pub async fn get_courses(user_id: i32) -> Result<Vec<ClassroomCourse>, String> {
         }
 
         let course_name = td_els[1].inner_html();
-        courses.push(ClassroomCourse { name: course_name })
+
+        let course_actions_container = td_els[5];
+        let anchor_container_children = course_actions_container.children().collect::<Vec<_>>();
+        let delete_anchor = anchor_container_children.get(5);
+
+        let delete_anchor = match delete_anchor {
+            Some(anchor) => anchor,
+            None => {
+                return Err(format!(
+                    "Error parsing tr: delete anchor not found in td[5] inner html: {}",
+                    course_name
+                ));
+            }
+        };
+
+        // user_information.php?action=unsubscribe&course_id=14&user_id=2421
+        let delete_anchor_href = match delete_anchor.value().as_element().unwrap().attr("href") {
+            Some(href) => href,
+            None => {
+                return Err(format!(
+                    "Error parsing tr: delete anchor href not found: {}",
+                    course_name
+                ));
+            }
+        };
+
+        let re = Regex::new(r"course_id=(\d+)").unwrap();
+        let captures = match re.captures(delete_anchor_href) {
+            Some(c) => c,
+            None => {
+                log::info!("course_href: {}", delete_anchor_href);
+                return Err(format!(
+                    "Error parsing tr: link course id not found. course: {}",
+                    course_name
+                ));
+            }
+        };
+
+        let course_id_str = captures.get(1).unwrap().as_str();
+
+        let course_id_result = course_id_str.parse::<i32>();
+        let course_id = match course_id_result {
+            Ok(id) => id,
+            Err(_) => {
+                log::info!("matched course_id: {}", course_id_str);
+                return Err(format!(
+                    "Error parsing course_id: not a number. course: {}",
+                    course_name
+                ));
+            }
+        };
+
+        courses.push(ClassroomCourse {
+            name: course_name,
+            course_id,
+        })
     }
 
     Ok(courses)

backend/src/online_classroom/mod.rs

@@ -11,6 +11,7 @@ pub mod register_course;
 mod session;
 pub mod update_expiration_date;
 pub mod user;
+pub mod course_disenroll;
 
 /// Tries to connect to the online classroom, and gets a session cookie
 /// if neccesary.

frontend/src/OnlineClassroom/ClassroomUserInfo/Courses.tsx

@@ -1,4 +1,4 @@
-import { For, Show, createEffect, onMount } from "solid-js";
+import { For, Show, createEffect } from "solid-js";
 import { LoadingStatus, backend, useLoading, wait } from "../../utils/functions";
 import { JsonResult } from "../../types/JsonResult";
 import { ClassroomCourse } from "../../types/ClassroomCourse";
@@ -8,8 +8,7 @@ import { XIcon } from "../../icons/XIcon";
 import { QuestionIcon } from "../../icons/QuestionIcon";
 
 export function CoursesList(props: {userid: number, updateSignal: number, courses: Array<ClassroomCourse>, setCourses: (c: Array<ClassroomCourse>) => void}) {
-
-    const {setError, status, setStatus} = useLoading();
+    const {error, setError, status, setStatus} = useLoading();
 
     const loadCourses = async() => {
         setStatus(LoadingStatus.Loading);
@@ -30,7 +29,7 @@ export function CoursesList(props: {userid: number, updateSignal: number, course
             });
     };
 
-    onMount(loadCourses);
+    // onMount(loadCourses);
 
     createEffect(() => {
         // Update courses when updateSignal changes
@@ -61,6 +60,13 @@ export function CoursesList(props: {userid: number, updateSignal: number, course
             <For each={props.courses}>
                 {(c) => <Course course={c} />}
             </For>
+
+            <Show when={error() !== ""}>
+                <p class="text-c-error">
+                    Error recuperando cursos: {error()}
+                </p>
+            </Show>
+
             <Show when={status() === LoadingStatus.Ok && props.courses.length === 0}>
                 <div class="px-4 pb-2 text-center">
                     <div class="text-center pt-6 pb-4">

frontend/src/types/ClassroomCourse.ts

@@ -1,5 +1,6 @@
 export type ClassroomCourse = {
-    name: string
+    name: string,
+    course_id: number,
 }
 
 export type ClassroomCourseValue =