-- Track individual Cases copied from vTiger into native Hub cases.
-- Unique source IDs make retries safe; this does not modify existing records.
CREATE TABLE IF NOT EXISTS vtiger_case_hub_imports (
    vtiger_case_id VARCHAR(80) PRIMARY KEY,
    ticket_number VARCHAR(80) NOT NULL,
    hub_sag_id INTEGER NOT NULL UNIQUE REFERENCES sag_sager(id) ON DELETE RESTRICT,
    hub_customer_id INTEGER NOT NULL REFERENCES customers(id) ON DELETE RESTRICT,
    imported_by_user_id INTEGER REFERENCES users(user_id) ON DELETE SET NULL,
    imported_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
    vtiger_marked_at TIMESTAMP,
    source_snapshot JSONB NOT NULL DEFAULT '{}'::jsonb
);

CREATE INDEX IF NOT EXISTS idx_vtiger_case_hub_imports_customer
    ON vtiger_case_hub_imports(hub_customer_id, imported_at DESC);