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use schemars::JsonSchema;
use serde::{Deserialize, Serialize};

use cosmwasm::traits::Storage;
use cosmwasm::types::CanonicalAddr;
use cw_storage::{singleton, singleton_read, ReadonlySingleton, Singleton};

pub static CONFIG_KEY: &[u8] = b"config";

#[derive(Serialize, Deserialize, Clone, Debug, PartialEq, JsonSchema)]
pub struct State {
    pub count: i32,
    pub owner: CanonicalAddr,
    pub version: i32,
}

pub fn config<S: Storage>(storage: &mut S) -> Singleton<S, State> {
    singleton(storage, CONFIG_KEY)
}

pub fn config_read<S: Storage>(storage: &S) -> ReadonlySingleton<S, State> {
    singleton_read(storage, CONFIG_KEY)
}