import duckdb

TABLES = {
    "raw_institution": """
        CREATE TABLE IF NOT EXISTS raw_institution (
            unitid INTEGER NOT NULL,
            year INTEGER NOT NULL,
            ein VARCHAR,
            institution_name VARCHAR,
            city VARCHAR,
            state VARCHAR,
            sector INTEGER,
            control INTEGER,
            carnegie_class INTEGER,
            enrollment_total INTEGER,
            PRIMARY KEY (unitid, year)
        )
    """,
    "raw_ipeds_finance": """
        CREATE TABLE IF NOT EXISTS raw_ipeds_finance (
            unitid INTEGER NOT NULL,
            year INTEGER NOT NULL,
            reporting_standard VARCHAR,
            total_expenses BIGINT,
            instruction_expenses BIGINT,
            research_expenses BIGINT,
            public_service_expenses BIGINT,
            academic_support_expenses BIGINT,
            student_services_expenses BIGINT,
            institutional_support_expenses BIGINT,
            auxiliary_expenses BIGINT,
            hospital_expenses BIGINT,
            other_expenses BIGINT,
            salaries_wages BIGINT,
            benefits BIGINT,
            PRIMARY KEY (unitid, year)
        )
    """,
    "raw_ipeds_staff": """
        CREATE TABLE IF NOT EXISTS raw_ipeds_staff (
            unitid INTEGER NOT NULL,
            year INTEGER NOT NULL,
            total_staff INTEGER,
            faculty_total INTEGER,
            management_total INTEGER,
            PRIMARY KEY (unitid, year)
        )
    """,
    "raw_ipeds_enrollment": """
        CREATE TABLE IF NOT EXISTS raw_ipeds_enrollment (
            unitid INTEGER NOT NULL,
            year INTEGER NOT NULL,
            total_enrollment INTEGER,
            PRIMARY KEY (unitid, year)
        )
    """,
    "raw_990_filing": """
        CREATE TABLE IF NOT EXISTS raw_990_filing (
            object_id VARCHAR PRIMARY KEY,
            ein VARCHAR,
            tax_year INTEGER,
            organization_name VARCHAR,
            return_type VARCHAR,
            filing_date DATE,
            total_revenue BIGINT,
            total_expenses BIGINT,
            total_assets BIGINT
        )
    """,
    "raw_990_schedule_j": """
        CREATE SEQUENCE IF NOT EXISTS seq_990_schedule_j START 1;
        CREATE TABLE IF NOT EXISTS raw_990_schedule_j (
            id INTEGER PRIMARY KEY DEFAULT nextval('seq_990_schedule_j'),
            object_id VARCHAR,
            ein VARCHAR,
            tax_year INTEGER,
            person_name VARCHAR,
            title VARCHAR,
            base_compensation BIGINT,
            bonus_compensation BIGINT,
            other_compensation BIGINT,
            deferred_compensation BIGINT,
            nontaxable_benefits BIGINT,
            total_compensation BIGINT,
            compensation_from_related BIGINT
        )
    """,
    "raw_990_part_vii": """
        CREATE SEQUENCE IF NOT EXISTS seq_990_part_vii START 1;
        CREATE TABLE IF NOT EXISTS raw_990_part_vii (
            id INTEGER PRIMARY KEY DEFAULT nextval('seq_990_part_vii'),
            object_id VARCHAR,
            ein VARCHAR,
            tax_year INTEGER,
            person_name VARCHAR,
            title VARCHAR,
            avg_hours_per_week DOUBLE,
            reportable_comp_from_org BIGINT,
            reportable_comp_from_related BIGINT,
            other_compensation BIGINT
        )
    """,
    "raw_ipeds_endowment": """
        CREATE TABLE IF NOT EXISTS raw_ipeds_endowment (
            unitid INTEGER NOT NULL,
            year INTEGER NOT NULL,
            endowment_boy BIGINT,
            endowment_eoy BIGINT,
            new_gifts BIGINT,
            net_investment_return BIGINT,
            spending_distribution BIGINT,
            other_changes BIGINT,
            total_private_gifts BIGINT,
            total_investment_return BIGINT,
            long_term_investments BIGINT,
            PRIMARY KEY (unitid, year)
        )
    """,
    "raw_cpi_u": """
        CREATE TABLE IF NOT EXISTS raw_cpi_u (
            year INTEGER NOT NULL,
            month INTEGER NOT NULL,
            value DOUBLE,
            series_id VARCHAR,
            PRIMARY KEY (year, month)
        )
    """,
    "raw_admin_headcount": """
        CREATE SEQUENCE IF NOT EXISTS seq_admin_headcount START 1;
        CREATE TABLE IF NOT EXISTS raw_admin_headcount (
            id INTEGER PRIMARY KEY DEFAULT nextval('seq_admin_headcount'),
            scrape_date DATE NOT NULL,
            unit VARCHAR NOT NULL,
            person_name VARCHAR,
            title VARCHAR,
            email VARCHAR,
            category VARCHAR,
            is_overhead BOOLEAN
        )
    """,
}


def ensure_schema(conn: duckdb.DuckDBPyConnection) -> None:
    """Create all raw tables if they don't exist."""
    for ddl in TABLES.values():
        # Some DDL blocks contain multiple statements (e.g. CREATE SEQUENCE + CREATE TABLE)
        for stmt in ddl.split(";"):
            stmt = stmt.strip()
            if stmt:
                conn.execute(stmt)