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use frame_support::dispatch::GetStorageVersion;
use frame_support::traits::StorageVersion;

use crate::PriceInfos;
use crate::{AggregatedPriceInfo, Pallet};
use crate::{Config, PriceInfo};

pub fn migrate<T: Config>() {
    if Pallet::<T>::on_chain_storage_version() < StorageVersion::new(2) {
        PriceInfos::<T>::translate::<PriceInfo, _>(
            |_, old_price_info| -> Option<AggregatedPriceInfo> {
                Some(AggregatedPriceInfo {
                    buy: old_price_info,
                    sell: PriceInfo::default(),
                })
            },
        );
        StorageVersion::new(2).put::<Pallet<T>>()
    }
}