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/cli/readarr/list_command_handler.rs

@@ -19,6 +19,16 @@ mod list_command_handler_tests;
 pub enum ReadarrListCommand {
   #[command(about = "List disk space details for all provisioned root folders in Readarr")]
   DiskSpace,
+  #[command(about = "Fetch Readarr logs")]
+  Logs {
+    #[arg(long, help = "How many log events to fetch", default_value_t = 500)]
+    events: u64,
+    #[arg(
+      long,
+      help = "Output the logs in the same format as they appear in the log files"
+    )]
+    output_in_log_format: bool,
+  },
   #[command(about = "List all Readarr updates")]
   Updates,
 }
@@ -30,19 +40,19 @@ impl From<ReadarrListCommand> for Command {
 }
 
 pub(super) struct ReadarrListCommandHandler<'a, 'b> {
-  _app: &'a Arc<Mutex<App<'b>>>,
+  app: &'a Arc<Mutex<App<'b>>>,
   command: ReadarrListCommand,
   network: &'a mut dyn NetworkTrait,
 }
 
 impl<'a, 'b> CliCommandHandler<'a, 'b, ReadarrListCommand> for ReadarrListCommandHandler<'a, 'b> {
   fn with(
-    _app: &'a Arc<Mutex<App<'b>>>,
+    app: &'a Arc<Mutex<App<'b>>>,
     command: ReadarrListCommand,
     network: &'a mut dyn NetworkTrait,
   ) -> Self {
     ReadarrListCommandHandler {
-      _app,
+      app,
       command,
       network,
     }
@@ -57,6 +67,23 @@ impl<'a, 'b> CliCommandHandler<'a, 'b, ReadarrListCommand> for ReadarrListComman
           .await?;
         serde_json::to_string_pretty(&resp)?
       }
+      ReadarrListCommand::Logs {
+        events,
+        output_in_log_format,
+      } => {
+        let logs = self
+          .network
+          .handle_network_event(ReadarrEvent::GetLogs(events).into())
+          .await?;
+
+        if output_in_log_format {
+          let log_lines = &self.app.lock().await.data.readarr_data.logs.items;
+
+          serde_json::to_string_pretty(log_lines)?
+        } else {
+          serde_json::to_string_pretty(&logs)?
+        }
+      }
       ReadarrListCommand::Updates => {
         let resp = self
           .network

src/cli/readarr/list_command_handler_tests.rs

@@ -18,9 +18,10 @@ mod tests {
   }
 
   mod cli {
-    use rstest::rstest;
-
     use super::*;
+    use clap::{Parser, error::ErrorKind};
+    use pretty_assertions::assert_eq;
+    use rstest::rstest;
 
     #[rstest]
     fn test_list_commands_have_no_arg_requirements(
@@ -30,12 +31,39 @@ mod tests {
 
       assert_ok!(&result);
     }
+
+    #[test]
+    fn test_list_logs_events_flag_requires_arguments() {
+      let result =
+        Cli::command().try_get_matches_from(["managarr", "readarr", "list", "logs", "--events"]);
+
+      assert_err!(&result);
+      assert_eq!(result.unwrap_err().kind(), ErrorKind::InvalidValue);
+    }
+
+    #[test]
+    fn test_list_logs_default_values() {
+      let expected_args = ReadarrListCommand::Logs {
+        events: 500,
+        output_in_log_format: false,
+      };
+      let result = Cli::try_parse_from(["managarr", "readarr", "list", "logs"]);
+
+      assert_ok!(&result);
+
+      let Some(Command::Readarr(ReadarrCommand::List(logs_command))) = result.unwrap().command
+      else {
+        panic!("Unexpected command type");
+      };
+      assert_eq!(logs_command, expected_args);
+    }
   }
 
   mod handler {
     use std::sync::Arc;
 
     use mockall::predicate::eq;
+    use pretty_assertions::assert_str_eq;
     use serde_json::json;
     use tokio::sync::Mutex;
 
@@ -45,7 +73,7 @@ mod tests {
         CliCommandHandler,
         readarr::list_command_handler::{ReadarrListCommand, ReadarrListCommandHandler},
       },
-      models::{Serdeable, readarr_models::ReadarrSerdeable},
+      models::{HorizontallyScrollableText, Serdeable, readarr_models::ReadarrSerdeable},
       network::{MockNetworkTrait, NetworkEvent, readarr_network::ReadarrEvent},
     };
 
@@ -72,6 +100,67 @@ mod tests {
       assert_ok!(&result);
     }
 
+    #[tokio::test]
+    async fn test_handle_list_logs_command() {
+      let expected_events = 1000;
+      let mut mock_network = MockNetworkTrait::new();
+      mock_network
+        .expect_handle_network_event()
+        .with(eq::<NetworkEvent>(
+          ReadarrEvent::GetLogs(expected_events).into(),
+        ))
+        .times(1)
+        .returning(|_| {
+          Ok(Serdeable::Readarr(ReadarrSerdeable::Value(
+            json!({"testResponse": "response"}),
+          )))
+        });
+      let app_arc = Arc::new(Mutex::new(App::test_default()));
+      let list_logs_command = ReadarrListCommand::Logs {
+        events: 1000,
+        output_in_log_format: false,
+      };
+
+      let result = ReadarrListCommandHandler::with(&app_arc, list_logs_command, &mut mock_network)
+        .handle()
+        .await;
+
+      assert_ok!(&result);
+    }
+
+    #[tokio::test]
+    async fn test_handle_list_logs_command_output_in_log_format() {
+      let mut mock_network = MockNetworkTrait::new();
+      mock_network
+        .expect_handle_network_event()
+        .with(eq::<NetworkEvent>(ReadarrEvent::GetLogs(1000).into()))
+        .times(1)
+        .returning(|_| {
+          Ok(Serdeable::Readarr(ReadarrSerdeable::Value(
+            json!({"testResponse": "response"}),
+          )))
+        });
+      let app_arc = Arc::new(Mutex::new(App::test_default()));
+      app_arc
+        .lock()
+        .await
+        .data
+        .readarr_data
+        .logs
+        .set_items(vec![HorizontallyScrollableText::from("readarr log line")]);
+      let list_logs_command = ReadarrListCommand::Logs {
+        events: 1000,
+        output_in_log_format: true,
+      };
+
+      let result = ReadarrListCommandHandler::with(&app_arc, list_logs_command, &mut mock_network)
+        .handle()
+        .await;
+
+      assert_ok!(&result);
+      assert_str_eq!(result.unwrap(), "[\n  \"readarr log line\"\n]");
+    }
+
     #[tokio::test]
     async fn test_handle_list_updates_command() {
       let mut mock_network = MockNetworkTrait::new();

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::{
-use crate::models::servarr_models::{DiskSpace, HostConfig, SecurityConfig, SystemStatus, Update};
+  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()