Pure Swift Echo framework for iOS mobile development. Can be used to work with accounts, transactions and contracts in Swift, and to easily obtain data from the blockchain via public apis.
This framework can be obtained through CocoaPods:
pod 'EchoFramework'
For setup framework use this simple code:
// Create and Setup framework main class
let echo = ECHO(settings: Settings(build: {
/** Here you can put your custom settings for our framework
Example:
Custom api options which can be used
*/
$0.apiOptions = [.accountHistory, .database, .networkBroadcast]
}))
// Start framwork. Connect to nodes and setup public apis
echo.start { (result) in
switch result {
case .success(let result):
print(result)
case .failure(let error):
print(error)
}There are simple examples of usage framework
func login() {
echo.isOwnedBy(name: "some name", wif: "some wif") { (result) in
print(result)
}
}func getInfo() {
let name = "some name"
echo.getAccount(nameOrID: name) { (result) in
print("Account \(result)")
}
echo.getBalance(nameOrID: name, asset: "1.3.1") { (result) in
print("Balance \(result)")
}
echo.getBalance(nameOrID: name, asset: nil) { (result) in
print("Assets with balances \(result)")
}
echo.isAccountReserved(nameOrID: name) { (result) in
print("Is reserved \(result)")
}
}func getHistory() {
echo.getAccountHistroy(
nameOrID: "some ID",
startId: "1.11.0",
stopId: "1.11.0",
limit: 100
) { (result) in
switch result {
case .success(let history):
print(history)
for element in history {
print(element)
}
case .failure(let error):
print(error)
}
}
}func setSubscriber() {
let name = "some name"
echo.subscribeToAccount(nameOrId: name, delegate: self)
}
extension YourClass: SubscribeAccountDelegate {
func didUpdateAccount(userAccount: UserAccount) {
print("Account updated \(userAccount)")
}
}func changeKeys() {
echo.changeKeys(
oldWIF: "your old wif",
newWIF: "your new wif",
name: "some name",
sendCompletion: { (result) in
switch result {
case .success(let success):
print("Success send transaction")
case .failure(let error):
print("Error while sending transaction")
}
},
confirmNoticeHandler: { (notice) in
switch notice {
case .success(let success):
print("Transaction confirmed")
case .failure(let error):
print("Transaction didn't confirmed")
}
}
)
}func feeForTransfer() {
echo.getFeeForTransferOperation(
fromNameOrId: "some name",
toNameOrId: "some name",
amount: 300,
asset: "1.3.0",
assetForFee: nil
) { (result) in
switch result {
case .success(let fee):
print(fee)
case .failure(let error):
print(error)
}
}
}funс transfer() {
echo.sendTransferOperation(
fromNameOrId: "some name",
wif: "some wif",
toNameOrId: "some name",
amount: 300,
asset: "1.3.0",
assetForFee: nil,
sendCompletion: { (result) in
switch result {
case .success(let success):
print("Success send transaction")
case .failure(let error):
print("Error while sending transaction")
}
},
confirmNoticeHandler: { (notice) in
switch notice {
case .success(let success):
print("Transaction confirmed")
case .failure(let error):
print("Transaction didn't confirmed")
}
}
)
}func createAsset() {
var asset = Asset("")
asset.symbol = "some symbol"
asset.precision = 4
asset.issuer = Account("some account id")
asset.predictionMarket = false
let price = Price(
base: AssetAmount(amount: 1, asset: Asset("1.3.0")),
quote: AssetAmount(amount: 1, asset: Asset("1.3.1"))
)
asset.options = AssetOptions(
maxSupply: 100000,
marketFeePercent: 0,
maxMarketFee: 0,
issuerPermissions: AssetOptionIssuerPermissions.overrideAuthority,
flags: AssetOptionIssuerPermissions.committeeFedAsset.rawValue,
coreExchangeRate: price,
description: "some description"
)
echo.createAsset(
nameOrId: "some name",
wif: "some wif",
asset: asset,
sendCompletion: { (result) in
switch result {
case .success(let success):
print("Success send transaction")
case .failure(let error):
print("Error while sending transaction")
}
},
confirmNoticeHandler: { (notice) in
switch notice {
case .success(let success):
print("Transaction confirmed")
case .failure(let error):
print("Transaction didn't confirmed")
}
}
)
}func issueAsset() {
echo.issueAsset(
issuerNameOrId: "some name",
wif: "some wif",
asset: "1.3.87",
amount: 1,
destinationIdOrName: "some name"
sendCompletion: { (result) in
switch result {
case .success(let success):
print("Success send transaction")
case .failure(let error):
print("Error while sending transaction")
}
},
confirmNoticeHandler: { (notice) in
switch notice {
case .success(let success):
print("Transaction confirmed")
case .failure(let error):
print("Transaction didn't confirmed")
}
}
)
}func createContract() {
let byteCode = "some bytecode"
echo.createContract(
registrarNameOrId: "some name",
wif: "some wif",
assetId: "1.3.0",
amount: nil,
assetForFee: nil,
byteCode: byteCode,
supportedAssetId: nil,
ethAccuracy: nil,
parameters: nil,
sendCompletion: { (result) in
switch result {
case .success(let success):
print("Success send transaction")
case .failure(let error):
print("Error while sending transaction")
}
},
confirmNoticeHandler: { (notice) in
switch notice {
case .success(let success):
print("Transaction confirmed")
case .failure(let error):
print("Transaction didn't confirmed")
}
}
)
}func callContract() {
echo.callContract(
registrarNameOrId: "some name",
wif: "some wif",
assetId: "1.3.0",
assetForFee: nil,
contratId: "1.16.1",
methodName: "some name",
methodParams: [],
sendCompletion: { (result) in
switch result {
case .success(let success):
print("Success send transaction")
case .failure(let error):
print("Error while sending transaction")
}
},
confirmNoticeHandler: { (notice) in
switch notice {
case .success(let success):
print("Transaction confirmed")
case .failure(let error):
print("Transaction didn't confirmed")
}
}
)
}func queryContract() {
echo.queryContract(
registrarNameOrId: "some name",
assetId: "1.3.0",
contratId: "1.16.1",
methodName: "some name",
methodParams: []
) { (result) in
switch result {
case .success(let success):
print(success)
case .failure(let error):
print(error)
}
}
}