feat(downloads): Download cancelling

Signed-off-by: quexeky <git@quexeky.dev>

pages/store/index.vue

@@ -9,7 +9,12 @@
     Download game
     <span v-if="progress != 0"> ({{ Math.floor(progress * 1000) / 10 }}%) </span>
   </button>
-</template>
+  <button
+    class="w-full rounded-md p-4 bg-blue-600 text-white"
+    @click="stopGameDownload"
+  >
+    Cancel game download
+  </button></template>
 <script setup lang="ts">
 import { invoke } from "@tauri-apps/api/core";
 
@@ -36,4 +41,7 @@ async function startGameDownload() {
     })();
   }, 100);
 }
+async function stopGameDownload() {
+  await invoke("stop_game_download", { "gameId": gameId.value })
+}
 </script>

src-tauri/src/downloads/download_agent.rs

@@ -3,7 +3,7 @@ use crate::db::DatabaseImpls;
 use crate::downloads::manifest::{DropDownloadContext, DropManifest};
 use crate::remote::RemoteAccessError;
 use crate::DB;
-use log::info;
+use log::{debug, error, info};
 use rayon::ThreadPoolBuilder;
 use std::fmt::{Display, Formatter};
 use std::fs::{create_dir_all, File};
@@ -239,7 +239,7 @@ impl GameDownloadAgent {
                             }
                         },
                         Err(e) => {
-                            info!("GameDownloadError: {}", e);
+                            error!("GameDownloadError: {}", e);
                             self.sender.send(DownloadManagerSignal::Error(e)).unwrap();
                             new_contexts_ref.lock().unwrap().push(context);
                         },
@@ -247,11 +247,10 @@ impl GameDownloadAgent {
                 });
             }
         });
-        info!("Acquiring lock");
         if !new_contexts.lock().unwrap().is_empty() {
-            info!("New contexts not empty");
+            debug!("New contexts not empty");
             *self.contexts.lock().unwrap() = Arc::into_inner(new_contexts).unwrap().into_inner().unwrap();
-            info!("Contexts: {:?}", *self.contexts.lock().unwrap());
+            debug!("Contexts: {:?}", *self.contexts.lock().unwrap());
             return Err(())
         }
         info!("Contexts: {:?}", *self.contexts.lock().unwrap());

src-tauri/src/downloads/download_commands.rs

@@ -1,5 +1,7 @@
 use std::sync::Mutex;
 
+use log::info;
+
 use crate::{AppError, AppState};
 
 #[tauri::command]
@@ -37,6 +39,7 @@ pub fn stop_game_download(
     state: tauri::State<'_, Mutex<AppState>>,
     game_id: String
 ) {
+    info!("Cancelling game download {}", game_id);
     state
         .lock()
         .unwrap()

src-tauri/src/downloads/download_manager.rs

@@ -7,7 +7,7 @@ use std::{
     thread::spawn,
 };
 
-use log::info;
+use log::{info, warn};
 
 use super::{
     download_agent::{GameDownloadAgent, GameDownloadError},
@@ -78,6 +78,7 @@ pub enum DownloadManagerSignal {
     /// Tells the Manager to stop the current
     /// download and return
     Finish,
+    Cancel(String),
     /// Any error which occurs in the agent
     Error(GameDownloadError),
 }
@@ -146,6 +147,9 @@ impl DownloadManagerBuilder {
                 DownloadManagerSignal::Error(e) => {
                     self.manage_error_signal(e);
                 },
+                DownloadManagerSignal::Cancel(id) => {
+                    self.manage_cancel_signal(id);
+                },
             };
         }
     }
@@ -220,10 +224,11 @@ impl DownloadManagerBuilder {
             spawn(move || {
                 match download_agent.download() {
                     Ok(_) => {
-                        sender.send(DownloadManagerSignal::Completed(download_agent.id.clone()));
+                        sender.send(DownloadManagerSignal::Completed(download_agent.id.clone())).unwrap();
                     },
-                    Err(_) => { 
+                    Err(e) => { 
-                        todo!() // Account for if the setup_download function fails
+                        warn!("Download failed");
+                        //todo!() // Account for if the setup_download function fails
                      },
                 };
             });
@@ -244,6 +249,22 @@ impl DownloadManagerBuilder {
         *lock = GameDownloadStatus::Error;
         self.set_status(DownloadManagerStatus::Error);
     }
+    fn manage_cancel_signal(&mut self, game_id: String) {
+        if let Some(current_flag) = &self.active_control_flag {
+            current_flag.set(DownloadThreadControlFlag::Stop);
+            self.active_control_flag = None;
+            *self.progress.lock().unwrap() = None;
+        }
+        self.download_agent_registry.remove(&game_id);
+        let mut lock = self.download_queue.lock().unwrap();
+        let index = match lock.iter().position(|interface| interface.id == game_id) {
+            Some(index) => index,
+            None => return,
+        };
+        lock.remove(index);
+        self.sender.send(DownloadManagerSignal::Go).unwrap();
+        info!("{:?}", self.download_agent_registry.iter().map(|x| x.0.clone()).collect::<String>());
+    }
     fn set_status(&self, status: DownloadManagerStatus) {
         *self.status.lock().unwrap() = status;
     }

src-tauri/src/downloads/download_manager_interface.rs

@@ -76,9 +76,9 @@ impl DownloadManager {
     }
     pub fn cancel_download(
         &self,
-        id: String
+        game_id: String
     ) {
-        todo!()
+        self.command_sender.send(DownloadManagerSignal::Cancel(game_id)).unwrap();
     }
     pub fn edit(&self) -> MutexGuard<'_, VecDeque<Arc<AgentInterfaceData>>> {
         self.download_queue.lock().unwrap()

src-tauri/src/lib.rs

@@ -132,6 +132,7 @@ pub fn run() {
             // Downloads
             download_game,
             get_current_game_download_progress,
+            stop_game_download
         ])
         .plugin(tauri_plugin_shell::init())
         .setup(|app| {