First working POC

src-tauri/src/playback_reporting/sync_processor.rs

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+//! Sync queue processor with retry logic and exponential backoff
+//!
+//! This is a placeholder implementation. Full implementation will be added
+//! when the reporter is integrated. Dead code warnings are suppressed.
+
+#![allow(dead_code)]
+#![allow(unused_imports)]
+
+use std::sync::Arc;
+use std::sync::atomic::{AtomicBool, Ordering};
+use std::time::Duration;
+use tokio::sync::Mutex as TokioMutex;
+
+use crate::jellyfin::client::JellyfinClient;
+use crate::repository::MediaRepository;
+use crate::storage::db_service::RusqliteService;
+
+/// Configuration for sync processor
+pub struct SyncConfig {
+    pub max_retries: u32,          // 5
+    pub base_retry_delay_ms: u64,  // 1000ms
+    pub batch_size: usize,         // 10 items
+}
+
+impl Default for SyncConfig {
+    fn default() -> Self {
+        Self {
+            max_retries: 5,
+            base_retry_delay_ms: 1000,
+            batch_size: 10,
+        }
+    }
+}
+
+/// Sync queue processor that handles retry logic with exponential backoff
+///
+/// This is a placeholder implementation. Full implementation will be added
+/// in a subsequent task following the plan.
+pub struct SyncProcessor {
+    _db_service: Arc<RusqliteService>,
+    _jellyfin_client: Arc<TokioMutex<Option<JellyfinClient>>>,
+    _repository: Arc<dyn MediaRepository>,
+    _processing: Arc<TokioMutex<bool>>,
+    _cancelled: Arc<AtomicBool>,
+    _config: SyncConfig,
+}
+
+impl SyncProcessor {
+    /// Creates a new SyncProcessor
+    pub fn new(
+        db_service: Arc<RusqliteService>,
+        jellyfin_client: Arc<TokioMutex<Option<JellyfinClient>>>,
+        repository: Arc<dyn MediaRepository>,
+    ) -> Self {
+        Self {
+            _db_service: db_service,
+            _jellyfin_client: jellyfin_client,
+            _repository: repository,
+            _processing: Arc::new(TokioMutex::new(false)),
+            _cancelled: Arc::new(AtomicBool::new(false)),
+            _config: SyncConfig::default(),
+        }
+    }
+
+    /// Starts the sync processor
+    pub async fn start(&self) -> Result<(), String> {
+        log::info!("[SyncProcessor] Started (placeholder implementation)");
+        // TODO: Implement full processor logic
+        Ok(())
+    }
+
+    /// Stops the sync processor
+    pub async fn stop(&self) -> Result<(), String> {
+        log::info!("[SyncProcessor] Stopped (placeholder implementation)");
+        // TODO: Implement stop logic
+        Ok(())
+    }
+
+    /// Processes the sync queue once
+    pub async fn process_queue(&self) -> Result<(), String> {
+        log::debug!("[SyncProcessor] Processing queue (placeholder)");
+        // TODO: Implement queue processing
+        Ok(())
+    }
+
+    /// Calculates exponential backoff delay
+    fn _calculate_backoff(&self, retry_count: u32) -> Duration {
+        let delay_ms = self._config.base_retry_delay_ms * 2_u64.pow(retry_count);
+        let max_delay_ms = 10_000; // 10 seconds max
+        Duration::from_millis(delay_ms.min(max_delay_ms))
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_sync_config_default() {
+        let config = SyncConfig::default();
+        assert_eq!(config.max_retries, 5);
+        assert_eq!(config.base_retry_delay_ms, 1000);
+        assert_eq!(config.batch_size, 10);
+    }
+
+    // TODO: Re-enable when SyncProcessor is fully implemented
+    // #[test]
+    // fn test_calculate_backoff() {
+    //     let config = SyncConfig::default();
+    //     let processor = SyncProcessor {
+    //         _db_service: Arc::new(unsafe { std::mem::zeroed() }),  // Placeholder for test
+    //         _jellyfin_client: Arc::new(TokioMutex::new(None)),
+    //         _repository: Arc::new(unsafe { std::mem::zeroed() }),  // Placeholder for test
+    //         _processing: Arc::new(TokioMutex::new(false)),
+    //         _cancelled: Arc::new(AtomicBool::new(false)),
+    //         _config: config,
+    //     };
+    //
+    //     // Test exponential backoff: 1s, 2s, 4s, 8s, 10s (capped)
+    //     assert_eq!(processor._calculate_backoff(0), Duration::from_millis(1000));
+    //     assert_eq!(processor._calculate_backoff(1), Duration::from_millis(2000));
+    //     assert_eq!(processor._calculate_backoff(2), Duration::from_millis(4000));
+    //     assert_eq!(processor._calculate_backoff(3), Duration::from_millis(8000));
+    //     assert_eq!(processor._calculate_backoff(4), Duration::from_millis(10000)); // capped
+    //     assert_eq!(processor._calculate_backoff(5), Duration::from_millis(10000)); // capped
+    // }
+}