import sqlite3
from collections import OrderedDict
import pytest


@pytest.mark.skipif(
    sqlite3.sqlite_version_info[1] < 37,
    reason="pragma_table_list was added in SQLite 3.37",
)
def test_shadow(db, snapshot):
    db.execute(
        "create virtual table v using vec0(a float[1], partition text partition key, metadata text, +name text, chunk_size=8)"
    )
    assert exec(db, "select * from sqlite_master order by name") == snapshot()
    assert (
        exec(db, "select * from pragma_table_list where type = 'shadow'") == snapshot()
    )

    db.execute("drop table v;")
    assert (
        exec(db, "select * from pragma_table_list where type = 'shadow'") == snapshot()
    )


def test_info(db, snapshot):
    db.execute("create virtual table v using vec0(a float[1])")
    assert exec(db, "select key, typeof(value) from v_info order by 1") == snapshot()


def exec(db, sql, parameters=[]):
    try:
        rows = db.execute(sql, parameters).fetchall()
    except (sqlite3.OperationalError, sqlite3.DatabaseError) as e:
        return {
            "error": e.__class__.__name__,
            "message": str(e),
        }
    a = []
    for row in rows:
        o = OrderedDict()
        for k in row.keys():
            o[k] = row[k]
        a.append(o)
    result = OrderedDict()
    result["sql"] = sql
    result["rows"] = a
    return result


def vec0_shadow_table_contents(db, v):
    shadow_tables = [
        row[0]
        for row in db.execute(
            "select name from sqlite_master where name like ? order by 1", [f"{v}_%"]
        ).fetchall()
    ]
    o = {}
    for shadow_table in shadow_tables:
        o[shadow_table] = exec(db, f"select * from {shadow_table}")
    return o