//! Persistence layer for sync metrics

use crate::service::sync::metrics::snapshot::SyncMetricsSnapshot;
use anyhow::Result;
use chrono::{DateTime, Utc};
use sea_orm::{ActiveModelTrait, ColumnTrait, DatabaseConnection, EntityTrait, QueryFilter, Set};
use serde_json;
use std::sync::Arc;
use uuid::Uuid;

/// Store a metrics snapshot in the database
pub async fn store_metrics_snapshot(
	db: &Arc<DatabaseConnection>,
	library_id: Uuid,
	snapshot: SyncMetricsSnapshot,
) -> Result<()> {
	// For now, we'll store the snapshot as JSON in a simple table
	// In the future, this could be optimized to store individual metrics
	let snapshot_json = serde_json::to_value(&snapshot)?;

	// TODO: Create a proper database table for metrics snapshots
	// For now, we'll just log that we would store it
	tracing::debug!(
		library_id = %library_id,
		timestamp = %snapshot.timestamp,
		"Would store metrics snapshot to database"
	);

	Ok(())
}

/// Retrieve metrics snapshots from the database
pub async fn get_metrics_snapshots(
	db: &Arc<DatabaseConnection>,
	library_id: Uuid,
	since: Option<DateTime<Utc>>,
	limit: Option<u32>,
) -> Result<Vec<SyncMetricsSnapshot>> {
	// TODO: Implement database retrieval
	// For now, return empty vector
	tracing::debug!(
		library_id = %library_id,
		since = ?since,
		limit = ?limit,
		"Would retrieve metrics snapshots from database"
	);

	Ok(vec![])
}

/// Clean up old metrics snapshots
pub async fn cleanup_old_metrics(
	db: &Arc<DatabaseConnection>,
	library_id: Uuid,
	older_than: DateTime<Utc>,
) -> Result<usize> {
	// TODO: Implement cleanup
	// For now, return 0
	tracing::debug!(
		library_id = %library_id,
		older_than = %older_than,
		"Would cleanup old metrics from database"
	);

	Ok(0)
}
