package keeper

import (
	"context"

	sdk "github.com/cosmos/cosmos-sdk/types"
	"github.com/cosmos/cosmos-sdk/x/evidence/types"
)

type msgServer struct {
	Keeper
}

// NewMsgServerImpl returns an implementation of the bank MsgServer interface
// for the provided Keeper.
func NewMsgServerImpl(keeper Keeper) types.MsgServer {
	return &msgServer{Keeper: keeper}
}

var _ types.MsgServer = msgServer{}

// SubmitEvidence implements the MsgServer.SubmitEvidence method.
func (ms msgServer) SubmitEvidence(goCtx context.Context, msg *types.MsgSubmitEvidence) (*types.MsgSubmitEvidenceResponse, error) {
	ctx := sdk.UnwrapSDKContext(goCtx)

	evidence := msg.GetEvidence()
	if err := ms.Keeper.SubmitEvidence(ctx, evidence); err != nil {
		return nil, err
	}

	ctx.EventManager().EmitEvent(
		sdk.NewEvent(
			sdk.EventTypeMessage,
			sdk.NewAttribute(sdk.AttributeKeyModule, types.AttributeValueCategory),
			sdk.NewAttribute(sdk.AttributeKeySender, msg.GetSubmitter().String()),
		),
	)

	return &types.MsgSubmitEvidenceResponse{
		Hash: evidence.Hash(),
	}, nil
}