from typing import Any

from ..core.database import (
    ChangeSet,
    DatabaseCommand,
    execute_command,
    g_update_prefix,
    read,
    sql_literal,
)


def get_backdrop_schema(name: str) -> dict[str, dict[str, Any]]:
    return { 'content' : {'type': 'str' , 'optional': False , 'readonly': False} }


def get_backdrop(name: str) -> dict[str, Any]:
    e = read(name, "select content from gis.backdrops where id = true")
    return { 'content': e['content'] }


def _set_backdrop(name: str, cs: ChangeSet) -> DatabaseCommand:
    statement = f"update gis.backdrops set content = {sql_literal(cs.operations[0]['content'])} where id = true;"

    change = g_update_prefix | { 'type': 'backdrop', 'content': cs.operations[0]['content'] }

    return DatabaseCommand(statement, [change])


def set_backdrop(name: str, cs: ChangeSet) -> ChangeSet:
    return execute_command(name, _set_backdrop(name, cs))


def inp_in_backdrop(section: list[str]) -> str:
    if section == []:
        return str('')

    content = '\n'.join(section)
    return str(f"update gis.backdrops set content = {sql_literal(content)} where id = true;")


def inp_out_backdrop(name: str) -> list[str]:
    obj = str(get_backdrop(name)['content'])
    return obj.split('\n')