/**
 * Operation Queue Manager
 * Handles FIFO queue of pending sync operations
 */
export class OperationQueue {
    constructor(indexedDB) {
        this.indexedDB = indexedDB;
    }
    /**
     * Add operation to the end of the queue
     */
    async enqueue(operation) {
        await this.indexedDB.addToQueue(operation);
    }
    /**
     * Get the first operation from the queue (without removing it)
     * Returns null if queue is empty
     */
    async peek() {
        const queue = await this.indexedDB.getQueue();
        return queue.length > 0 ? queue[0] : null;
    }
    /**
     * Get all operations in the queue (sorted by timestamp FIFO)
     */
    async getAll() {
        return await this.indexedDB.getQueue();
    }
    /**
     * Remove a specific operation from the queue
     */
    async remove(operationId) {
        await this.indexedDB.removeFromQueue(operationId);
    }
    /**
     * Remove the first operation from the queue and return it
     * Returns null if queue is empty
     */
    async dequeue() {
        const operation = await this.peek();
        if (operation) {
            await this.remove(operation.id);
        }
        return operation;
    }
    /**
     * Clear all operations from the queue
     */
    async clear() {
        await this.indexedDB.clearQueue();
    }
    /**
     * Get the number of operations in the queue
     */
    async size() {
        const queue = await this.getAll();
        return queue.length;
    }
    /**
     * Check if queue is empty
     */
    async isEmpty() {
        const size = await this.size();
        return size === 0;
    }
    /**
     * Get operations for a specific event ID
     */
    async getOperationsForEvent(eventId) {
        const queue = await this.getAll();
        return queue.filter(op => op.eventId === eventId);
    }
    /**
     * Remove all operations for a specific event ID
     */
    async removeOperationsForEvent(eventId) {
        const operations = await this.getOperationsForEvent(eventId);
        for (const op of operations) {
            await this.remove(op.id);
        }
    }
    /**
     * Update retry count for an operation
     */
    async incrementRetryCount(operationId) {
        const queue = await this.getAll();
        const operation = queue.find(op => op.id === operationId);
        if (operation) {
            operation.retryCount++;
            // Re-add to queue with updated retry count
            await this.remove(operationId);
            await this.enqueue(operation);
        }
    }
}
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