/
handler.go
215 lines (176 loc) · 6.11 KB
/
handler.go
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package issuer
import (
"fmt"
"strconv"
didkeeper "github.com/allinbits/cosmos-cash-poc/x/did/keeper"
didtypes "github.com/allinbits/cosmos-cash-poc/x/did/types"
"github.com/allinbits/cosmos-cash-poc/x/issuer/keeper"
"github.com/allinbits/cosmos-cash-poc/x/issuer/types"
sdk "github.com/cosmos/cosmos-sdk/types"
sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
)
// NewHandler ...
func NewHandler(k keeper.Keeper, idk didkeeper.Keeper) sdk.Handler {
return func(ctx sdk.Context, msg sdk.Msg) (*sdk.Result, error) {
ctx = ctx.WithEventManager(sdk.NewEventManager())
switch msg := msg.(type) {
case types.MsgCreateIssuer:
return handleMsgCreateIssuer(ctx, msg, k, idk)
case types.MsgBurnToken:
return handleMsgBurnToken(ctx, msg, k)
case types.MsgMintToken:
return handleMsgMintToken(ctx, msg, k)
case types.MsgFreezeToken:
return handleMsgFreezeToken(ctx, msg, k)
case types.MsgUnfreezeToken:
return handleMsgUnfreezeToken(ctx, msg, k)
case types.MsgWithdrawToken:
return handleMsgWithdrawToken(ctx, msg, k)
case types.MsgFreezeAccount:
return handleMsgFreezeAccount(ctx, msg, k)
default:
errMsg := fmt.Sprintf("unrecognized %s message type: %T", types.ModuleName, msg)
return nil, sdkerrors.Wrap(sdkerrors.ErrUnknownRequest, errMsg)
}
}
}
func handleMsgCreateIssuer(ctx sdk.Context, msg types.MsgCreateIssuer, k keeper.Keeper, idk didkeeper.Keeper) (*sdk.Result, error) {
// TODO: check if regulator
document, found := idk.GetDidDocument(ctx, []byte(didtypes.DidIdentifer+msg.Owner.String()))
if !found {
return nil, fmt.Errorf("identity not found")
}
cred, found := idk.GetVerifiableCredential(ctx, []byte(document.Service[0].ID))
if !found {
return nil, fmt.Errorf("creds not found")
}
if cred.CredentialSubject.Role != "Issuer" {
return nil, fmt.Errorf("role incorrect")
}
if _, found := k.GetIssuer(ctx, msg.Address); found {
return nil, nil
}
issuer := types.NewIssuer(
msg.Name,
msg.Address,
msg.Token,
)
amount, err := strconv.Atoi(msg.Amount)
if err != nil {
return nil, nil
}
k.SetIssuer(ctx, msg.Address, issuer)
checkIssuer, found := k.GetIssuer(ctx, msg.Address)
if !found {
return nil, nil
}
k.CoinKeeper.SetCoins(ctx, checkIssuer.Address, sdk.NewCoins(sdk.NewInt64Coin(msg.Token, int64(amount))))
ctx.EventManager().EmitEvents(sdk.Events{
sdk.NewEvent(
types.EventTypeCreateIssuer,
sdk.NewAttribute(types.AttributeKeyIssuerAddress, msg.Address.String()),
sdk.NewAttribute(types.AttributeKeyIssuerAmount, msg.Amount),
sdk.NewAttribute(sdk.AttributeKeySender, msg.Owner.String()),
),
})
return &sdk.Result{Events: ctx.EventManager().Events()}, nil
}
func handleMsgBurnToken(ctx sdk.Context, msg types.MsgBurnToken, k keeper.Keeper) (*sdk.Result, error) {
issuer, found := k.GetIssuer(ctx, msg.Issuer)
if !found {
return nil, nil
}
amount, err := strconv.Atoi(msg.Amount)
if err != nil {
return nil, nil
}
k.CoinKeeper.SubtractCoins(ctx, issuer.Address, sdk.NewCoins(sdk.NewInt64Coin(msg.Token, int64(amount))))
ctx.EventManager().EmitEvents(sdk.Events{
sdk.NewEvent(
types.EventTypeBurnToken,
sdk.NewAttribute(types.AttributeKeyBurnerAddress, msg.Issuer.String()),
sdk.NewAttribute(types.AttributeKeyBurnerAmount, msg.Amount),
sdk.NewAttribute(sdk.AttributeKeySender, msg.Issuer.String()),
),
})
return &sdk.Result{Events: ctx.EventManager().Events()}, nil
}
func handleMsgMintToken(ctx sdk.Context, msg types.MsgMintToken, k keeper.Keeper) (*sdk.Result, error) {
issuer, found := k.GetIssuer(ctx, msg.Issuer)
if !found {
return nil, nil
}
amount, err := strconv.Atoi(msg.Amount)
if err != nil {
return nil, nil
}
k.CoinKeeper.AddCoins(ctx, issuer.Address, sdk.NewCoins(sdk.NewInt64Coin(msg.Token, int64(amount))))
ctx.EventManager().EmitEvents(sdk.Events{
sdk.NewEvent(
types.EventTypeMintToken,
sdk.NewAttribute(types.AttributeKeyMinterAddress, msg.Issuer.String()),
sdk.NewAttribute(types.AttributeKeyMinterAmount, msg.Amount),
sdk.NewAttribute(sdk.AttributeKeySender, msg.Issuer.String()),
),
})
return &sdk.Result{Events: ctx.EventManager().Events()}, nil
}
func handleMsgFreezeToken(ctx sdk.Context, msg types.MsgFreezeToken, k keeper.Keeper) (*sdk.Result, error) {
issuer, found := k.GetIssuer(ctx, msg.Issuer)
if !found {
return nil, nil
}
issuer.State = types.FROZEN
k.SetIssuer(ctx, msg.Issuer, issuer)
ctx.EventManager().EmitEvents(sdk.Events{
sdk.NewEvent(
types.EventTypeFreezeToken,
sdk.NewAttribute(types.AttributeKeyIssuerAddress, msg.Issuer.String()),
),
})
return &sdk.Result{Events: ctx.EventManager().Events()}, nil
}
func handleMsgUnfreezeToken(ctx sdk.Context, msg types.MsgUnfreezeToken, k keeper.Keeper) (*sdk.Result, error) {
issuer, found := k.GetIssuer(ctx, msg.Issuer)
if !found {
return nil, nil
}
issuer.State = types.ACCEPTED
k.SetIssuer(ctx, msg.Issuer, issuer)
ctx.EventManager().EmitEvents(sdk.Events{
sdk.NewEvent(
types.EventTypeUnfreezeToken,
sdk.NewAttribute(types.AttributeKeyIssuerAddress, msg.Issuer.String()),
),
})
return &sdk.Result{Events: ctx.EventManager().Events()}, nil
}
func handleMsgWithdrawToken(ctx sdk.Context, msg types.MsgWithdrawToken, k keeper.Keeper) (*sdk.Result, error) {
// TODO: have some check here
amount, err := strconv.Atoi(msg.Amount)
if err != nil {
return nil, nil
}
k.SupplyKeeper.SendCoinsFromAccountToModule(ctx, msg.Owner, types.ModuleName, sdk.NewCoins(sdk.NewInt64Coin(msg.Token, int64(amount))))
ctx.EventManager().EmitEvents(sdk.Events{
sdk.NewEvent(
types.EventTypeWithdrawToken,
sdk.NewAttribute(types.AttributeKeyIssuerAddress, msg.Owner.String()),
),
})
return &sdk.Result{Events: ctx.EventManager().Events()}, nil
}
func handleMsgFreezeAccount(ctx sdk.Context, msg types.MsgFreezeAccount, k keeper.Keeper) (*sdk.Result, error) {
account := types.NewAccount(
msg.Account,
types.FROZENACCOUNT,
)
k.SetAccount(ctx, msg.Account, account)
ctx.EventManager().EmitEvents(sdk.Events{
sdk.NewEvent(
types.EventTypeWithdrawToken,
sdk.NewAttribute(types.AttributeKeyIssuerAddress, msg.Issuer.String()),
),
})
return &sdk.Result{Events: ctx.EventManager().Events()}, nil
}