LightWalletCopy/example_helpers.js at master · KevinJiao/LightWalletCopy · GitHub

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// Example usage of helpers: Name Registry
// Create the contract, register the key 123, set the value 456

var ethlightjs = require('ethlightjs')
var txutils = ethlightjs.txutils
var helpers = ethlightjs.helpers

var web3api = new ethlightjs.blockchainapi.web3api("http://104.236.65.136:8545")
//var web3api = new ethlightjs.blockchainapi.web3api("http://localhost:8545")
var web3 = web3api.getWeb3();

var source = '\ncontract NameCoin {\n\n    struct Item {\n\taddress owner;\n\tuint value;\n    }\n\n    mapping (uint => Item) registry;\n\n    function register(uint key) {\n\tif (registry[key].owner == 0) {\n\t    registry[key].owner = msg.sender;\n\t}\n    }\n\n    function transferOwnership(uint key, address newOwner) {\n\tif (registry[key].owner == msg.sender) {\n\t    registry[key].owner = newOwner;\n\t}\n    }\n\n    function setValue(uint key, uint newValue) {\n\tif (registry[key].owner == msg.sender) {\n\t    registry[key].value = newValue;\n\t}\n    }\n\n    function getValue(uint key) constant returns (uint value) {\n\treturn registry[key].value;\n    }\n\n    function getOwner(uint key) constant returns (address owner) {\n\treturn registry[key].owner;\n    }\n}\n'

//var code = '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'

// contract json abi, this is autogenerated using solc CLI
//var abi = [{"constant":true,"inputs":[{"name":"key","type":"uint256"}],"name":"getValue","outputs":[{"name":"value","type":"uint256"}],"type":"function"},{"constant":false,"inputs":[{"name":"key","type":"uint256"},{"name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"type":"function"},{"constant":false,"inputs":[{"name":"key","type":"uint256"},{"name":"newValue","type":"uint256"}],"name":"setValue","outputs":[],"type":"function"},{"constant":true,"inputs":[{"name":"key","type":"uint256"}],"name":"getOwner","outputs":[{"name":"owner","type":"address"}],"type":"function"},{"constant":false,"inputs":[{"name":"key","type":"uint256"}],"name":"register","outputs":[],"type":"function"}]


//var privkey = '2cf24dba5fb0a30e26e83b2ac5b9e29e1b161e5c1fa7425e73043362938b9824'
//keystore.addPrivateKey(privkey, 'mypassword')

var seed = 'unhappy nerve cancel reject october fix vital pulse cash behind curious bicycle'
var keystore = new ethlightjs.keystore(seed, 'mypassword')
keystore.generateNewAddress('mypassword')

var sendingAddr = keystore.getAddresses()[0]
console.log(sendingAddr)
var nonce = web3api.getNonce(sendingAddr)
var compiled = web3.eth.compile.solidity(source).NameCoin
var code = compiled.code.slice(2)
var abi = compiled.info.abiDefinition

console.log('Nonce: ' + nonce)
console.log('Balance: ' + web3api.getBalance(sendingAddr))

txOptions = {
    gasLimit: 1000000,
    nonce: nonce
}

// create, sign and inject transaction creating the contract
helpers.sendCreateContractTx(code, sendingAddr, txOptions, web3api, keystore, 'mypassword', function(err, contractAddr) {
    console.log('Contract address: ' + contractAddr)

    // TX to register the key 123
    txOptions.nonce += 1
    helpers.sendFunctionTx(abi, contractAddr, 'register', [123], sendingAddr, txOptions, web3api, keystore, 'mypassword', function(){})

    // TX to set the value corresponding to key 123 to 456
    txOptions.nonce += 1
    helpers.sendFunctionTx(abi, contractAddr, 'setValue', [123, 456], sendingAddr, txOptions, web3api, keystore, 'mypassword', function(){})

    // TX to send some value to the newly created contract
    txOptions.nonce += 1
    helpers.sendValueTx(sendingAddr, contractAddr, 1000000000000, txOptions, web3api, keystore, 'mypassword', function(){})

    // Check that the owner is sendingAddr
    var blockNumber = web3.eth.blockNumber
    var b = blockNumber
    console.log('Waiting for blocks...')

    for (var i=0; i<3; i++) {
        blockNumber = b
        while (b == blockNumber) {
        b = web3.eth.blockNumber
        }
        console.log('New blocks found. Waiting for some more blocks...')
    }

    //var contractAddr = '86e0497e32a8e1d79fe38ab87dc80140df5470d9'
    var myContract = web3.eth.contract(abi).at('0x' + contractAddr)
    var owner = myContract.getOwner(123)
    console.log('Owner: ' + owner)

    // Check the value of key 123
    var val = myContract.getValue(123)
    console.log('Value: ' + val)

    // Check the balance of the contract
    var bal = web3api.getBalance(contractAddr)
    console.log('Contract balance: ' + bal)
})