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Merge pull request #31 from matterinc/update-readme
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Add examples to readme, prettify formatting
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shamatar authored Sep 13, 2018
2 parents c849a3e + ee35150 commit 2aa2bf7
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3,507 changes: 1,765 additions & 1,742 deletions Example/web3swiftExample/Pods/Pods.xcodeproj/project.pbxproj
100755 → 100644

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Expand Up @@ -326,7 +326,7 @@
buildSettings = {
ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
CODE_SIGN_STYLE = Automatic;
DEVELOPMENT_TEAM = 62V9CKQN89;
DEVELOPMENT_TEAM = "";
INFOPLIST_FILE = web3swiftExample/Info.plist;
IPHONEOS_DEPLOYMENT_TARGET = 9.0;
LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
Expand All @@ -343,7 +343,7 @@
buildSettings = {
ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
CODE_SIGN_STYLE = Automatic;
DEVELOPMENT_TEAM = 62V9CKQN89;
DEVELOPMENT_TEAM = "";
INFOPLIST_FILE = web3swiftExample/Info.plist;
IPHONEOS_DEPLOYMENT_TARGET = 9.0;
LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
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81 changes: 59 additions & 22 deletions README.md
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Expand Up @@ -126,17 +126,26 @@ $ pod install

## Usage

Here's a few use cases of our library
Here's a few use cases of our library:

### Create Account
Create keystore and account with password.

```
//TODO
```

### Initializing Ethereum address
```bash
```
let coldWalletAddress = EthereumAddress("0x6394b37Cf80A7358b38068f0CA4760ad49983a1B")
let constractAddress = EthereumAddress("0x45245bc59219eeaaf6cd3f382e078a461ff9de7b")
```
Ethereum addresses are checksum checked if they are not lowercased and always length checked


### Setting options
```bash

```
var options = Web3Options.defaultOptions()
// public var to: EthereumAddress? = nil - to what address transaction is aimed
// public var from: EthereumAddress? = nil - form what address it should be sent (either signed locally or on the node)
Expand All @@ -147,46 +156,61 @@ options.gasPrice = gasPrice
options.gasLimit = gasLimit
options.from = EthereumAddress("0xE6877A4d8806e9A9F12eB2e8561EA6c1db19978d")
```

### Encoding Transaction

```
//TODO
```

### Signing Transaction

```
//TODO
```
### Getting ETH balance
```bash
```
let address = EthereumAddress("0xE6877A4d8806e9A9F12eB2e8561EA6c1db19978d")!
let web3Main = Web3.InfuraMainnetWeb3()
let balanceResult = web3Main.eth.getBalance(address)
guard case .success(let balance) = balanceResult else {return}
```
### Getting gas price
```bash
```
let web3Main = Web3.InfuraMainnetWeb3()
let gasPriceResult = web3Main.eth.getGasPrice()
guard case .success(let gasPrice) = gasPriceResult else {return}
```
### Getting ERC20 token balance
```bash
let contractAddress = EthereumAddress("0x45245bc59219eeaaf6cd3f382e078a461ff9de7b")! // BKX token on Ethereum mainnet
let contract = web3.contract(Web3.Utils.erc20ABI, at: contractAddress, abiVersion: 2)! // utilize precompiled ERC20 ABI for your concenience
guard let bkxBalanceResult = contract.method("balanceOf", parameters: [coldWalletAddress] as [AnyObject], options: options)?.call(options: nil) else {return} // encode parameters for transaction
guard case .success(let bkxBalance) = bkxBalanceResult, let bal = bkxBalance["0"] as? BigUInt else {return} // bkxBalance is [String: Any], and parameters are enumerated as "0", "1", etc in order of being returned. If returned parameter has a name in ABI, it is also duplicated
print("BKX token balance = " + String(bal))
```

### Sending ETH
```bash
```
let web3Rinkeby = Web3.InfuraRinkebyWeb3()
web3Rinkeby.addKeystoreManager(bip32keystoreManager) // attach a keystore if you want to sign locally. Otherwise unsigned request will be sent to remote node
options.from = bip32ks?.addresses?.first! // specify from what address you want to send it
intermediateSend = web3Rinkeby.contract(Web3.Utils.coldWalletABI, at: coldWalletAddress, abiVersion: 2)!.method(options: options)! // an address with a private key attached in not different from any other address, just has very simple ABI
let sendResultBip32 = intermediateSend.send(password: "BANKEXFOUNDATION")
let sendResultBip32 = intermediateSend.send(password: "changeme")
```

### Sending ERC20
```bash
### ERC20 Iteraction:

#### Getting ERC20 token balance
```
let contractAddress = EthereumAddress("0x45245bc59219eeaaf6cd3f382e078a461ff9de7b")! // BKX token on Ethereum mainnet
let contract = web3.contract(Web3.Utils.erc20ABI, at: contractAddress, abiVersion: 2)! // utilize precompiled ERC20 ABI for your concenience
guard let bkxBalanceResult = contract.method("balanceOf", parameters: [coldWalletAddress] as [AnyObject], options: options)?.call(options: nil) else {return} // encode parameters for transaction
guard case .success(let bkxBalance) = bkxBalanceResult, let bal = bkxBalance["0"] as? BigUInt else {return} // bkxBalance is [String: Any], and parameters are enumerated as "0", "1", etc in order of being returned. If returned parameter has a name in ABI, it is also duplicated
print("BKX token balance = " + String(bal))
```

#### Sending ERC20
```
var convenienceTransferOptions = Web3Options.defaultOptions()
convenienceTransferOptions.gasPrice = gasPriceRinkeby
let convenienceTokenTransfer = web3Rinkeby.eth.sendERC20tokensWithNaturalUnits(tokenAddress: EthereumAddress("0xa407dd0cbc9f9d20cdbd557686625e586c85b20a")!, from: (ks?.addresses?.first!)!, to: EthereumAddress("0x6394b37Cf80A7358b38068f0CA4760ad49983a1B")!, amount: "0.0001", options: convenienceTransferOptions) // there are also convenience functions to send ETH and ERC20 under the .eth structure
let gasEstimateResult = convenienceTokenTransfer!.estimateGas(options: nil)
guard case .success(let gasEstimate) = gasEstimateResult else {return}
convenienceTransferOptions.gasLimit = gasEstimate
let convenienceTransferResult = convenienceTokenTransfer!.send(password: "BANKEXFOUNDATION", options: convenienceTransferOptions)
let convenienceTransferResult = convenienceTokenTransfer!.send(password: "changeme", options: convenienceTransferOptions)
switch convenienceTransferResult {
case .success(let res):
print("Token transfer successful")
Expand All @@ -196,16 +220,29 @@ switch convenienceTransferResult {
}
```

## Global plans
- Full reference `web3js` functionality
- Light Ethereum subprotocol (LES) integration
## [Apps using this library](https://github.com/matterinc/web3swift/wiki/Apps-using-web3swift)

If you are using `web3swift` in your app or know of an app that uses it, please add it to this list. It would be much appreciated! 👍

## [Apps using this library](https://github.com/matterinc/web3swift/wiki/Apps-using-web3swift)
* [MEWconnect-iOS](https://github.com/MyEtherWallet/MEWconnect-iOS)
* [Peepeth iOS client](https://github.com/matterinc/PeepethClient)
* [Ethereum & ERC20Tokens Wallet](https://itunes.apple.com/us/app/ethereum-erc20tokens-wallet/id1386738877?ls=1&mt=8)
* [BankexWallet](https://github.com/BANKEX/Pay-iOS)
* [GeoChain](https://github.com/awallish/GeoChain)
* [YOUR APP CAN BE THERE (click me)](https://github.com/matterinc/web3swift/issues) :wink:

If you've used this project in a live app, please let us know!

*If you are using `web3swift` in your app or know of an app that uses it, please add it to [this](https://github.com/matterinc/web3swift/wiki/Apps-using-web3swift) list.*



## Future plans

- Full reference `web3js` functionality
- Light Ethereum subprotocol (LES) integration


## Special thanks to

- Gnosis team and their library [Bivrost-swift](https://github.com/gnosis/bivrost-swift) for inspiration for the ABI decoding approach
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