"""TDD red test for S0 schema load (DATA-MODEL.md contract)."""
import os
import sqlite3
import tempfile

import pytest


SCHEMA_PATH = os.path.join(os.path.dirname(__file__), "..", "db", "schema.sql")


def test_schema_loads_cleanly_and_all_tables_exist():
    """Given: schema.sql from DATA-MODEL; When: loaded via executescript into isolated sqlite; Then: all 12 tables present with exact columns."""
    expected_tables = {
        "slabs",
        "slab_photos",
        "pricing_rules",
        "woo_categories",
        "woo_attributes",
        "woo_attribute_terms",
        "woo_tags",
        "settings",
        "prompts",
        "prompt_revisions",
        "sync_log",
        "inference_log",
    }
    with tempfile.TemporaryDirectory() as tmp:
        db_path = os.path.join(tmp, "isolated.db")
        assert os.path.exists(SCHEMA_PATH), "schema.sql must exist for test"
        with open(SCHEMA_PATH, "r", encoding="utf-8") as f:
            schema_sql = f.read()
        conn = sqlite3.connect(db_path)
        try:
            conn.executescript(schema_sql)
            conn.commit()
            rows = conn.execute(
                "SELECT name FROM sqlite_master WHERE type='table' AND name NOT LIKE 'sqlite_%'"
            ).fetchall()
            actual = {r[0] for r in rows}
            assert expected_tables.issubset(actual), f"Missing tables: {expected_tables - actual}"
            # spot check one column from slabs per DATA-MODEL
            cols = [r[1] for r in conn.execute("PRAGMA table_info(slabs)").fetchall()]
            assert "id" in cols and "status" in cols and "client_rev" in cols
        finally:
            conn.close()