from pathlib import Path


MIGRATION = (
    Path(__file__).resolve().parents[2]
    / 'docs/sql/migrations/2026-10-11-market-sample-indexes.sql'
)


EXPECTED = {
    'idx_bps_market_sample_code': 'tenant_no,del_flag,sample_code',
    'idx_bps_market_parent': 'tenant_no,del_flag,collection_protocol_id',
    'idx_brds_market_sample_code': 'tenant_no,del_flag,sample_code',
    'idx_brds_market_parent': 'tenant_no,del_flag,research_donation_id',
    'idx_bsr_market_sample_progress': 'tenant_no,reception_source,sample_code,del_flag,reception_time',
    'idx_bqwo_market_sample_progress': 'tenant_no,reception_source,trigger_source,sample_code,del_flag',
    'idx_bsrr_market_sample_progress': 'tenant_no,reception_source,sample_code,del_flag,storage_time',
    'idx_bpsc_market_parent': 'tenant_no,collection_protocol_id,del_flag',
    'idx_bpft_market_parent': 'tenant_no,collection_protocol_id,del_flag',
}


def test_market_sample_migration_validates_exact_mysql57_index_definitions():
    sql = MIGRATION.read_text(encoding='utf-8')

    assert 'information_schema.statistics' in sql.lower()
    assert 'PREPARE stmt' in sql
    assert 'non_unique' in sql.lower()
    assert 'sub_part' in sql.lower()
    assert 'index_type' in sql.lower()
    for index_name, columns in EXPECTED.items():
        assert f"SET @index_name = '{index_name}'" in sql
        assert f"@index_columns = '{columns}'" in sql
        assert f'DROP INDEX {index_name}, ADD INDEX {index_name}' in sql


def test_market_sample_migration_only_targets_required_tables():
    sql = MIGRATION.read_text(encoding='utf-8')
    expected_tables = {
        'biz_protocol_sample',
        'biz_research_donation_sample',
        'biz_sample_reception',
        'biz_qc_work_order',
        'biz_storage_release_review',
        'biz_protocol_storage_cert',
        'biz_protocol_fullmoon_todo',
    }
    actual_tables = {
        line.split("'")[1]
        for line in sql.splitlines()
        if line.startswith("SET @table_name = '")
    }
    assert actual_tables == expected_tables