package keeper

import (
	"context"
	"errors"
	"fmt"

	"cosmossdk.io/x/auth/types"

	sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
)

var _ types.MsgServer = msgServer{}

type msgServer struct {
	ak AccountKeeper
}

// NewMsgServerImpl returns an implementation of the x/auth MsgServer interface.
func NewMsgServerImpl(ak AccountKeeper) types.MsgServer {
	return &msgServer{
		ak: ak,
	}
}

func (ms msgServer) NonAtomicExec(goCtx context.Context, msg *types.MsgNonAtomicExec) (*types.MsgNonAtomicExecResponse, error) {
	if msg.Signer == "" {
		return nil, errors.New("empty signer address string is not allowed")
	}

	signer, err := ms.ak.AddressCodec().StringToBytes(msg.Signer)
	if err != nil {
		return nil, sdkerrors.ErrInvalidAddress.Wrapf("invalid signer address: %s", err)
	}

	if len(msg.Msgs) == 0 {
		return nil, sdkerrors.ErrInvalidRequest.Wrapf("messages cannot be empty")
	}

	msgs, err := msg.GetMessages()
	if err != nil {
		return nil, err
	}

	results, err := ms.ak.NonAtomicMsgsExec(goCtx, signer, msgs)
	if err != nil {
		return nil, err
	}

	return &types.MsgNonAtomicExecResponse{
		Results: results,
	}, nil
}

func (ms msgServer) UpdateParams(ctx context.Context, msg *types.MsgUpdateParams) (*types.MsgUpdateParamsResponse, error) {
	if ms.ak.authority != msg.Authority {
		return nil, fmt.Errorf(
			"expected authority account as only signer for proposal message; invalid authority; expected %s, got %s",
			ms.ak.authority, msg.Authority)
	}

	if err := msg.Params.Validate(); err != nil {
		return nil, err
	}

	if err := ms.ak.Params.Set(ctx, msg.Params); err != nil {
		return nil, err
	}

	return &types.MsgUpdateParamsResponse{}, nil
}