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offerContract.js
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offerContract.js
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/*jslint node: true */
'use strict';
const conf = require('ocore/conf');
const headlessWallet = require('headless-obyte');
const db = require('ocore/db');
const moment = require('moment');
const constants = require('ocore/constants');
module.exports = (myAddress, event_date, contract, cb) => {
let device = require('ocore/device.js');
let defaultContract = {
timeout: conf.contractTimeout,
myAsset: conf.defaultAsset,
peerAsset: conf.defaultAsset,
peer_pays_to: 'contract',
relation: '>',
reverseRelation: '<=',
expiry: conf.contractExpiry,
data_party: 'peer',
expiry_party: 'me'
};
for (let key in defaultContract) {
if (contract[key] === undefined) contract[key] = defaultContract[key];
}
if (contract.myAsset === "base") contract.myAmount *= conf.unitValue;
if (contract.peerAsset === "base") contract.peerAmount *= conf.unitValue;
contract.myAmount = Math.round(contract.myAmount);
contract.peerAmount = Math.round(contract.peerAmount);
if (contract.myAmount === contract.peerAmount) {
contract.myAmount += 1;
}
readLastMainChainIndex((err, last_mci) => {
if (err) return cb(err);
let arrSeenCondition = ['seen', {
what: 'output',
address: (contract.peer_pays_to === 'contract') ? 'this address' : myAddress,
asset: contract.peerAsset,
amount: contract.peerAmount
}];
let arrEventCondition = ['in data feed', [[conf.oracle_address], contract.feed_name, contract.relation, contract.feedValue + '', last_mci]];
let data_address = (contract.data_party === 'me') ? myAddress : contract.peerAddress;
let expiry_address = (contract.expiry_party === 'me') ? myAddress : contract.peerAddress;
let data_device_address = (contract.data_party === 'me') ? device.getMyDeviceAddress() : contract.peerDeviceAddress;
let expiry_device_address = (contract.expiry_party === 'me') ? device.getMyDeviceAddress() : contract.peerDeviceAddress;
let timeout = Math.round(Date.now()/1000 + contract.timeout * 3600);
let arrReverseCondition = ['in data feed', [[conf.oracle_address], contract.feed_name, contract.reverseRelation, contract.feedValue + '', last_mci]];
let arrMyCondition = (contract.peerAsset === "base")
? arrReverseCondition
: ['or', [
arrReverseCondition,
['and', [
arrEventCondition,
['has', {
what: 'output',
asset: contract.peerAsset,
address: data_address,
amount: contract.peerAmount + contract.myAmount
}]
]]
]];
let arrDefinition = ['or', [
['and', [
arrSeenCondition,
['or', [
['and', [
['address', data_address],
arrEventCondition
]],
['and', [
['address', expiry_address],
['timestamp', ['>', Math.round(moment(event_date, 'DD.MM.YYYY').valueOf()/1000 + contract.expiry * 24 * 3600)]]
]],
['and', [
['address', myAddress],
arrMyCondition
]]
]]
]],
['and', [
['address', myAddress],
['not', arrSeenCondition],
['timestamp', ['>', timeout]]
]]
]];
let assocSignersByPath = {
'r.0.1.0.0': {
address: data_address,
member_signing_path: 'r',
device_address: data_device_address
},
'r.0.1.1.0': {
address: expiry_address,
member_signing_path: 'r',
device_address: expiry_device_address
},
'r.0.1.2.0': {
address: myAddress,
member_signing_path: 'r',
device_address: device.getMyDeviceAddress()
},
'r.1.0': {
address: myAddress,
member_signing_path: 'r',
device_address: device.getMyDeviceAddress()
}
};
let walletDefinedByAddresses = require('ocore/wallet_defined_by_addresses.js');
walletDefinedByAddresses.createNewSharedAddress(arrDefinition, assocSignersByPath, {
ifError: (err) => {
cb(err);
},
ifOk: (shared_address) => {
headlessWallet.issueChangeAddressAndSendPayment(contract.myAsset, contract.myAmount, shared_address, contract.peerDeviceAddress, (err, unit) => {
if (err) return cb(err);
let arrPayments = [{
address: shared_address,
amount: contract.peerAmount,
asset: contract.peerAsset
}];
let assocDefinitions = {};
assocDefinitions[shared_address] = {
definition: arrDefinition,
signers: assocSignersByPath
};
let objPaymentRequest = {payments: arrPayments, definitions: assocDefinitions};
let paymentJson = JSON.stringify(objPaymentRequest);
let paymentJsonBase64 = Buffer(paymentJson).toString('base64');
let paymentRequestCode = 'payment:' + paymentJsonBase64;
let paymentRequestText = '[your share of payment to the contract](' + paymentRequestCode + ')';
cb(null, paymentRequestText, shared_address, timeout);
});
}
});
});
};
function readLastMainChainIndex(cb) {
if (conf.bLight) {
let network = require('ocore/network.js');
network.requestFromLightVendor('get_last_mci', null, (ws, request, response) => {
response.error ? cb(response.error) : cb(null, response);
});
}
else {
let storage = require('ocore/storage');
storage.readLastMainChainIndex((last_mci) => {
cb(null, last_mci);
});
}
}