-- Create webhooks table for project webhook subscriptions
CREATE TABLE IF NOT EXISTS webhooks (
    id               TEXT PRIMARY KEY,
    project_id       TEXT NOT NULL,
    url              TEXT NOT NULL,
    secret           TEXT, -- HMAC-SHA256 signing secret (optional but recommended)
    events           TEXT NOT NULL, -- JSON array of event types to subscribe
    enabled          BOOLEAN NOT NULL DEFAULT true,
    created_at       TIMESTAMPTZ NOT NULL DEFAULT NOW(),
    updated_at       TIMESTAMPTZ NOT NULL DEFAULT NOW()
);

-- Index for efficient lookup by project
CREATE INDEX IF NOT EXISTS idx_webhooks_project_id
    ON webhooks(project_id);

-- Index for finding enabled webhooks (most queries will filter by enabled)
CREATE INDEX IF NOT EXISTS idx_webhooks_enabled
    ON webhooks(enabled)
    WHERE enabled = true;

-- GIN index for efficient JSONB containment queries on events column
-- Required for: WHERE events::jsonb ? 'event_type'
CREATE INDEX IF NOT EXISTS idx_webhooks_events_gin
    ON webhooks USING GIN ((events::jsonb));

-- Create webhook_deliveries table for delivery tracking
CREATE TABLE IF NOT EXISTS webhook_deliveries (
    id               TEXT PRIMARY KEY,
    webhook_id       TEXT NOT NULL REFERENCES webhooks(id) ON DELETE CASCADE,
    event_type       TEXT NOT NULL,
    payload          TEXT NOT NULL, -- JSON payload that was sent
    response_status  INT,
    response_body    TEXT,
    delivered_at     TIMESTAMPTZ NOT NULL DEFAULT NOW(),
    success          BOOLEAN NOT NULL DEFAULT false,
    retry_count      INT NOT NULL DEFAULT 0,
    error_message    TEXT -- Capture error details for failed deliveries
);

-- Index for listing deliveries by webhook
CREATE INDEX IF NOT EXISTS idx_webhook_deliveries_webhook_id
    ON webhook_deliveries(webhook_id, delivered_at DESC);

-- Index for monitoring failed deliveries
CREATE INDEX IF NOT EXISTS idx_webhook_deliveries_success
    ON webhook_deliveries(success, delivered_at DESC)
    WHERE success = false;

-- Index for cleanup of old deliveries
CREATE INDEX IF NOT EXISTS idx_webhook_deliveries_delivered_at
    ON webhook_deliveries(delivered_at);

COMMENT ON TABLE webhooks IS 'Webhook subscriptions for project events';
COMMENT ON COLUMN webhooks.project_id IS 'Project ID that this webhook is subscribed to';
COMMENT ON COLUMN webhooks.url IS 'URL to POST webhook payloads to';
COMMENT ON COLUMN webhooks.secret IS 'Secret for HMAC-SHA256 signing (X-Webhook-Signature header)';
COMMENT ON COLUMN webhooks.events IS 'JSON array of event types: command.started, command.completed, command.failed, pod.ready, pod.failed';
COMMENT ON COLUMN webhooks.enabled IS 'Whether this webhook is active';

COMMENT ON TABLE webhook_deliveries IS 'Webhook delivery history and retry tracking';
COMMENT ON COLUMN webhook_deliveries.webhook_id IS 'Reference to the webhook configuration';
COMMENT ON COLUMN webhook_deliveries.event_type IS 'Type of event that triggered this delivery';
COMMENT ON COLUMN webhook_deliveries.payload IS 'JSON payload that was sent to the webhook URL';
COMMENT ON COLUMN webhook_deliveries.response_status IS 'HTTP status code from the webhook endpoint';
COMMENT ON COLUMN webhook_deliveries.response_body IS 'Response body from the webhook endpoint (truncated)';
COMMENT ON COLUMN webhook_deliveries.success IS 'Whether the delivery was successful (2xx response)';
COMMENT ON COLUMN webhook_deliveries.retry_count IS 'Number of retry attempts for this delivery';
COMMENT ON COLUMN webhook_deliveries.error_message IS 'Error details if delivery failed';