CREATE TABLE IF NOT EXISTS event_queue (
    id INTEGER PRIMARY KEY AUTOINCREMENT,
    event_type TEXT NOT NULL,
    payload TEXT NOT NULL,
    status TEXT NOT NULL DEFAULT 'pending',
    retry_count INTEGER NOT NULL DEFAULT 0,
    max_retries INTEGER NOT NULL DEFAULT 3,
    created_at TEXT NOT NULL DEFAULT (datetime('now')),
    updated_at TEXT NOT NULL DEFAULT (datetime('now')),
    error_message TEXT
);

CREATE TABLE IF NOT EXISTS dead_letter_queue (
    id INTEGER PRIMARY KEY AUTOINCREMENT,
    original_event_id INTEGER NOT NULL,
    event_type TEXT NOT NULL,
    payload TEXT NOT NULL,
    error_message TEXT NOT NULL,
    retry_count INTEGER NOT NULL,
    created_at TEXT NOT NULL DEFAULT (datetime('now')),
    original_created_at TEXT NOT NULL
);

CREATE INDEX idx_event_queue_status ON event_queue(status);
CREATE INDEX idx_event_queue_created_at ON event_queue(created_at);