// Copyright 2022 Evmos Foundation
// This file is part of the Evmos Network packages.
//
// Evmos is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The Evmos packages are distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the Evmos packages. If not, see https://github.com/evmos/evmos/blob/main/LICENSE

package v2

import (
	"github.com/cosmos/cosmos-sdk/codec"
	storetypes "github.com/cosmos/cosmos-sdk/store/types"
	sdk "github.com/cosmos/cosmos-sdk/types"
	v2types "github.com/evmos/evmos/v15/x/inflation/migrations/v2/types"
	"github.com/evmos/evmos/v15/x/inflation/types"
)

// MigrateStore migrates the x/inflation module state from the consensus version 1 to
// version 2. Specifically, it takes the parameters that are currently stored
// and managed by the Cosmos SDK params module and stores them directly into the x/inflation module state.
func MigrateStore(
	ctx sdk.Context,
	storeKey storetypes.StoreKey,
	legacySubspace types.Subspace,
	cdc codec.BinaryCodec,
) error {
	store := ctx.KVStore(storeKey)
	var params v2types.V2Params

	legacySubspace = legacySubspace.WithKeyTable(v2types.ParamKeyTable())
	legacySubspace.GetParamSetIfExists(ctx, &params)
	if err := params.Validate(); err != nil {
		return err
	}

	bz, err := cdc.Marshal(&params)
	if err != nil {
		return err
	}

	store.Set(types.ParamsKey, bz)

	return nil
}
