v0.1.4-pre.006

crates/ksp-app-config-desk/src/app_state.rs

@@ -0,0 +1,78 @@
+// file: crates/ksp-app-config-desk/src/app_state.rs
+// version: 1
+
+//! Shared backend state owned by the Tauri application.
+
+struct LoggingRuntimeState {
+    guard: ksp_logging_lib::LoggingGuard,
+    active_profile_id: std::option::Option<String>,
+    generation: u32,
+    fallback_active: bool,
+    startup_diagnostic: std::option::Option<crate::CommandErrorDto>,
+}
+
+/// Shared Config Desk application state managed by Tauri.
+pub(crate) struct AppState {
+    config_management: ksp_config_lib::ConfigManagement,
+    logging_runtime: std::sync::Mutex<LoggingRuntimeState>,
+}
+
+impl AppState {
+    /// Initializes Config ownership, the Logging runtime and durable application state.
+    pub(crate) fn initialize(arguments: &[std::ffi::OsString]) -> ksp_core_lib::Result<Self> {
+        let config_management = crate::config_management(arguments);
+        let config_management = match config_management {
+            std::result::Result::Ok(value) => value,
+            std::result::Result::Err(error) => return std::result::Result::Err(error),
+        };
+        let logging_startup = crate::initialize_logging(&config_management);
+        let logging_startup = match logging_startup {
+            std::result::Result::Ok(value) => value,
+            std::result::Result::Err(error) => return std::result::Result::Err(error),
+        };
+        return std::result::Result::Ok(Self {
+            config_management,
+            logging_runtime: std::sync::Mutex::new(LoggingRuntimeState {
+                guard: logging_startup.guard,
+                active_profile_id: logging_startup.active_profile_id,
+                generation: 1,
+                fallback_active: logging_startup.fallback_active,
+                startup_diagnostic: logging_startup.startup_diagnostic,
+            }),
+        });
+    }
+
+    /// Builds a safe initial frontend snapshot without exposing resolved secret values or arbitrary error context.
+    pub(crate) fn snapshot(&self) -> ksp_core_lib::Result<crate::AppSnapshotDto> {
+        let document_count = self.config_management.engine().registry().descriptors().count();
+        let document_count = u32::try_from(document_count);
+        let document_count = match document_count {
+            std::result::Result::Ok(value) => value,
+            std::result::Result::Err(error) => {
+                return std::result::Result::Err(
+                    ksp_core_lib::Error::new(crate::ERROR_CODE_APP_STATE_INVALID, "Config registry contains too many descriptors for the desktop DTO")
+                        .with_source(error),
+                );
+            },
+        };
+        let runtime = self.logging_runtime.lock();
+        let runtime = match runtime {
+            std::result::Result::Ok(value) => value,
+            std::result::Result::Err(_) => {
+                return std::result::Result::Err(ksp_core_lib::Error::new(
+                    crate::ERROR_CODE_APP_STATE_LOCK_FAILED,
+                    "Config Desk Logging runtime state lock is poisoned",
+                ));
+            },
+        };
+        let _keep_guard_alive = &runtime.guard;
+        return std::result::Result::Ok(crate::AppSnapshotDto {
+            application_version: env!("CARGO_PKG_VERSION").to_owned(),
+            config_document_count: document_count,
+            active_logging_profile: runtime.active_profile_id.clone(),
+            logging_generation: runtime.generation,
+            fallback_logging_active: runtime.fallback_active,
+            startup_diagnostic: runtime.startup_diagnostic.clone(),
+        });
+    }
+}