import timeit
from fixtures.benchmark_fixture import MetricReport
import pytest

from fixtures.zenith_fixtures import ZenithEnvBuilder

# Run bulk tenant creation test.
#
# Collects metrics:
#
# 1. Time to create {1,10,50} tenants
# 2. Average creation time per tenant


@pytest.mark.parametrize('tenants_count', [1, 5, 10])
@pytest.mark.parametrize('use_safekeepers', ['with_wa', 'without_wa'])
def test_bulk_tenant_create(
    zenith_env_builder: ZenithEnvBuilder,
    use_safekeepers: str,
    tenants_count: int,
    zenbenchmark,
):
    """Measure tenant creation time (with and without wal acceptors)"""
    if use_safekeepers == 'with_wa':
        zenith_env_builder.num_safekeepers = 3
    env = zenith_env_builder.init_start()

    time_slices = []

    for i in range(tenants_count):
        start = timeit.default_timer()

        tenant = env.zenith_cli.create_tenant()
        env.zenith_cli.create_timeline(
            f'test_bulk_tenant_create_{tenants_count}_{i}_{use_safekeepers}', tenant_id=tenant)

        # FIXME: We used to start new safekeepers here. Did that make sense? Should we do it now?
        #if use_safekeepers == 'with_sa':
        #    wa_factory.start_n_new(3)

        pg_tenant = env.postgres.create_start(
            f'test_bulk_tenant_create_{tenants_count}_{i}_{use_safekeepers}', tenant_id=tenant)

        end = timeit.default_timer()
        time_slices.append(end - start)

        pg_tenant.stop()

    zenbenchmark.record('tenant_creation_time',
                        sum(time_slices) / len(time_slices),
                        's',
                        report=MetricReport.LOWER_IS_BETTER)
