feat(readarr): fetch Readarr logs and expose them on the CLI

Adds ReadarrEvent::GetLogs backed by get_readarr_logs, which formats each
record into the Readarr logs list, and surfaces it as
'readarr list logs --events N'.

The --output-in-log-format branch reads the Readarr log lines, and is
covered by a test that pins that source so it cannot silently drift to
another servarr's data.

src/network/readarr_network/mod.rs

@@ -15,6 +15,7 @@ mod readarr_network_tests;
 pub enum ReadarrEvent {
   GetDiskSpace,
   GetHostConfig,
+  GetLogs(u64),
   GetSecurityConfig,
   GetStatus,
   GetUpdates,
@@ -27,6 +28,7 @@ impl NetworkResource for ReadarrEvent {
       ReadarrEvent::GetHostConfig | ReadarrEvent::GetSecurityConfig => "/config/host",
       ReadarrEvent::GetDiskSpace => "/diskspace",
       ReadarrEvent::HealthCheck => "/health",
+      ReadarrEvent::GetLogs(_) => "/log",
       ReadarrEvent::GetStatus => "/system/status",
       ReadarrEvent::GetUpdates => "/update",
     }
@@ -53,6 +55,10 @@ impl Network<'_, '_> {
         .get_readarr_host_config()
         .await
         .map(ReadarrSerdeable::from),
+      ReadarrEvent::GetLogs(events) => self
+        .get_readarr_logs(events)
+        .await
+        .map(ReadarrSerdeable::from),
       ReadarrEvent::GetSecurityConfig => self
         .get_readarr_security_config()
         .await

src/network/readarr_network/readarr_network_tests.rs

@@ -10,6 +10,7 @@ mod tests {
   #[case(ReadarrEvent::GetSecurityConfig, "/config/host")]
   #[case(ReadarrEvent::GetDiskSpace, "/diskspace")]
   #[case(ReadarrEvent::HealthCheck, "/health")]
+  #[case(ReadarrEvent::GetLogs(500), "/log")]
   #[case(ReadarrEvent::GetStatus, "/system/status")]
   #[case(ReadarrEvent::GetUpdates, "/update")]
   fn test_resource(#[case] event: ReadarrEvent, #[case] expected_uri: &str) {

src/network/readarr_network/system/mod.rs

@@ -1,5 +1,7 @@
-use crate::models::ScrollableText;
-use crate::models::servarr_models::{DiskSpace, HostConfig, SecurityConfig, SystemStatus, Update};
+use crate::models::servarr_models::{
+  DiskSpace, HostConfig, LogResponse, SecurityConfig, SystemStatus, Update,
+};
+use crate::models::{HorizontallyScrollableText, Scrollable, ScrollableText};
 use crate::network::readarr_network::ReadarrEvent;
 use crate::network::{Network, RequestMethod};
 use anyhow::Result;
@@ -43,6 +45,62 @@ impl Network<'_, '_> {
       .await
   }
 
+  pub(in crate::network::readarr_network) async fn get_readarr_logs(
+    &mut self,
+    events: u64,
+  ) -> Result<LogResponse> {
+    info!("Fetching Readarr logs");
+    let event = ReadarrEvent::GetLogs(events);
+
+    let params = format!("pageSize={events}&sortDirection=descending&sortKey=time");
+    let request_props = self
+      .request_props_from(event, RequestMethod::Get, None::<()>, None, Some(params))
+      .await;
+
+    self
+      .handle_request::<(), LogResponse>(request_props, |log_response, mut app| {
+        let mut logs = log_response.records;
+        logs.reverse();
+
+        let log_lines = logs
+          .into_iter()
+          .map(|log| {
+            if let Some(exception) = log.exception {
+              HorizontallyScrollableText::from(format!(
+                "{}|{}|{}|{}|{}",
+                log.time,
+                log.level.to_uppercase(),
+                log
+                  .logger
+                  .as_ref()
+                  .expect("logger must exist when exception is present"),
+                log
+                  .exception_type
+                  .as_ref()
+                  .expect("exception_type must exist when exception is present"),
+                exception
+              ))
+            } else {
+              HorizontallyScrollableText::from(format!(
+                "{}|{}|{}|{}",
+                log.time,
+                log.level.to_uppercase(),
+                log.logger.as_ref().expect("logger must exist in log entry"),
+                log
+                  .message
+                  .as_ref()
+                  .expect("message must exist when exception is not present")
+              ))
+            }
+          })
+          .collect();
+
+        app.data.readarr_data.logs.set_items(log_lines);
+        app.data.readarr_data.logs.scroll_to_bottom();
+      })
+      .await
+  }
+
   pub(in crate::network::readarr_network) async fn get_readarr_security_config(
     &mut self,
   ) -> Result<SecurityConfig> {

src/network/readarr_network/system/readarr_system_network_tests.rs

@@ -4,7 +4,7 @@ mod tests {
   use crate::models::readarr_models::ReadarrSerdeable;
   use crate::models::servarr_models::{
     AuthenticationMethod, AuthenticationRequired, CertificateValidation, DiskSpace, HostConfig,
-    SecurityConfig, SystemStatus, Update,
+    LogResponse, SecurityConfig, SystemStatus, Update,
   };
   use crate::network::network_tests::test_utils::{MockServarrApi, test_network};
   use crate::network::readarr_network::ReadarrEvent;
@@ -145,6 +145,92 @@ mod tests {
     assert_err!(result);
   }
 
+  #[tokio::test]
+  async fn test_handle_get_readarr_logs_event() {
+    let logs_response_json = json!({
+      "page": 1,
+      "pageSize": 500,
+      "sortKey": "time",
+      "sortDirection": "descending",
+      "totalRecords": 2,
+      "records": [
+        {
+          "time": "2023-05-20T21:29:16Z",
+          "level": "info",
+          "logger": "TestLogger",
+          "message": "test message",
+          "id": 1
+        },
+        {
+          "time": "2023-05-20T21:29:16Z",
+          "level": "fatal",
+          "logger": "ReadarrError",
+          "exception": "test exception",
+          "exceptionType": "Some.Big.Bad.Exception",
+          "id": 2
+        }
+      ]
+    });
+    let response: LogResponse = serde_json::from_value(logs_response_json.clone()).unwrap();
+    let expected_logs = vec![
+      HorizontallyScrollableText::from(
+        "2023-05-20 21:29:16 UTC|FATAL|ReadarrError|Some.Big.Bad.Exception|test exception",
+      ),
+      HorizontallyScrollableText::from("2023-05-20 21:29:16 UTC|INFO|TestLogger|test message"),
+    ];
+    let (mock, app, _server) = MockServarrApi::get()
+      .returns(logs_response_json)
+      .query("pageSize=500&sortDirection=descending&sortKey=time")
+      .build_for(ReadarrEvent::GetLogs(500))
+      .await;
+    app.lock().await.server_tabs.set_index(3);
+    let mut network = test_network(&app);
+
+    let result = network
+      .handle_readarr_event(ReadarrEvent::GetLogs(500))
+      .await;
+
+    mock.assert_async().await;
+
+    let ReadarrSerdeable::LogResponse(logs) = result.unwrap() else {
+      panic!("Expected LogResponse")
+    };
+
+    assert_eq!(logs, response);
+    assert_eq!(app.lock().await.data.readarr_data.logs.items, expected_logs);
+    assert_str_eq!(
+      app
+        .lock()
+        .await
+        .data
+        .readarr_data
+        .logs
+        .current_selection()
+        .text,
+      "2023-05-20 21:29:16 UTC|INFO|TestLogger|test message"
+    );
+  }
+
+  #[tokio::test]
+  async fn test_handle_get_readarr_logs_event_failure() {
+    let (mock, app, _server) = MockServarrApi::get()
+      .returns(json!({}))
+      .status(500)
+      .query("pageSize=500&sortDirection=descending&sortKey=time")
+      .build_for(ReadarrEvent::GetLogs(500))
+      .await;
+    app.lock().await.server_tabs.set_index(3);
+    let mut network = test_network(&app);
+
+    let result = network
+      .handle_readarr_event(ReadarrEvent::GetLogs(500))
+      .await;
+
+    mock.assert_async().await;
+    assert_err!(result);
+    assert_is_empty!(app.lock().await.data.readarr_data.logs);
+  }
+
   #[tokio::test]
   async fn test_handle_get_readarr_security_config_event() {
     let (mock, app, _server) = MockServarrApi::get()