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//! # CW-20 Helpers

use cosmwasm_std::{to_binary, Addr, QuerierWrapper, QueryRequest, StdResult, Uint128, WasmQuery};
use cw20::{Cw20QueryMsg, TokenInfoResponse};

pub fn query_supply(querier: &QuerierWrapper, contract_addr: Addr) -> StdResult<Uint128> {
    let res: TokenInfoResponse = querier.query(&QueryRequest::Wasm(WasmQuery::Smart {
        contract_addr: String::from(contract_addr),
        msg: to_binary(&Cw20QueryMsg::TokenInfo {})?,
    }))?;

    Ok(res.total_supply)
}