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| // Dependencies
const moment = require('moment-timezone');
const web = require('./web');
const parser = require('./parser');
const Url = require('url');
const debug = require('debug')('node-cba-netbank');
moment.tz.setDefault('Australia/Sydney');
// Constant
const LINK = {
BASE: 'https://www.my.commbank.com.au',
LOGON: '/netbank/Logon/Logon.aspx',
HOME: '/netbank/Portfolio/Home/Home.aspx?RID=:RID&SID=:SID',
HISTORY: '/netbank/TransactionHistory/History.aspx?RID=:RID&SID=:SID',
EXPORT: '/netbank/TransactionHistory/Exports.aspx?RID=:RID&SID=:SID&ExportType=OFX',
};
// Utilities
function toDateString(timestamp) {
return moment(timestamp).format('DD/MM/YYYY');
}
const isSameTransaction = (left, right) =>
// case 1. Have same receipt number, of course, it's not empty
(left.receiptnumber && left.receiptnumber === right.receiptnumber) ||
// case 2. Same time, same description and same amount
(left.timestamp === right.timestamp && left.description === right.description && left.amount === right.amount);
// concat 2 transactionList without any duplications.
function concat(a, b) {
return a.concat(b.filter(vb => !a.find(va => isSameTransaction(va, vb))));
}
// Return `${LINK.BASE}+${path}`
function getUrl(path) {
return Url.resolve(LINK.BASE, path);
}
// Change the BASE link if it's been redirected.
function refreshBase(resp) {
const oldLink = Url.parse(LINK.BASE);
const newLink = Url.parse(resp.url);
Iif (oldLink.host !== newLink.host) {
debug(`refreshBase(${oldLink.host} => ${newLink.host}`);
oldLink.host = newLink.host;
LINK.BASE = Url.format(oldLink);
}
return resp;
}
// If the search panel is lazy loading, not only the transactions data is not in
// the page, the search page widget is not ready as well. So, search request will
// fail. To workaround such problem, we send an update panel partial callback
// first,let server side prepared the search panel and download transaction.
// Then, do the real search using the information from the parital callback result.
function lazyLoading(response, account) {
debug(`lazyLoading(account: ${account.name} [${account.number}] => ${account.available}))`);
return web
.post({
url: getUrl(account.link),
form: Object.assign({}, response.form, {
// Send partial request
ctl00$ctl00: 'ctl00$BodyPlaceHolder$UpdatePanelForAjax|ctl00$BodyPlaceHolder$UpdatePanelForAjaxh',
__EVENTTARGET: 'ctl00$BodyPlaceHolder$UpdatePanelForAjax',
__EVENTARGUMENT: 'doPostBackApiCall|LoadRecentTransactions|false',
}),
partial: true,
})
.then(parser.parseViewState)
.then(resp => parser.parseForm(resp).catch(() => resp))
.then(resp => Object.assign({}, resp, { form: Object.assign({}, response.form, resp.form) }));
}
// API
function logon(credentials) {
// retrieve the logon page
return (
web
.get(getUrl(LINK.LOGON))
// Parse the page to get logon form
.then(refreshBase)
.then(parser.parseForm)
.then(resp =>
// fill the logon form and submit
web.post({
url: getUrl(LINK.LOGON),
form: Object.assign({}, resp.form, {
txtMyClientNumber$field: credentials.username,
txtMyPassword$field: credentials.password,
chkRemember$field: 'on',
// and make JS detector happy
JS: 'E',
}),
}),
)
.then(refreshBase)
// parse the home page to retrieve the accounts list
.then(parser.parseHomePage)
);
}
function getMoreTransactions(response, account) {
debug(`getMoreTransactions(account: ${account.name} [${account.number}] => ${account.available})`);
const form = Object.assign({}, response.form, {
// fill the form
ctl00$ctl00: 'ctl00$BodyPlaceHolder$UpdatePanelForAjax|ctl00$BodyPlaceHolder$UpdatePanelForAjax',
__EVENTTARGET: 'ctl00$BodyPlaceHolder$UpdatePanelForAjax',
__EVENTARGUMENT: 'doPostBackApiCall|LoadTransactions|{"ClearCache":"false","IsSorted":false,"IsAdvancedSearch":true,"IsMonthSearch":false}',
});
// send the request
return web
.post({
url: getUrl(account.link),
form,
partial: true,
})
.then(parser.parseTransactions)
.then(refreshBase)
.then((resp) => {
Eif (!resp.more || resp.limit) {
// There is no more transactions or reached the limit.
return resp;
}
return (
getMoreTransactions(
Object.assign({}, resp, { form }),
Object.assign({}, account, { link: Url.parse(resp.url).path }),
)
// concat more transactions.
.then(r => Object.assign({}, r, { form, transactions: concat(resp.transactions, r.transactions) }))
// Ignore the error as we have got some transactions already
.catch((error) => {
debug(error);
return resp;
})
);
});
}
function getTransactionsByDate(response, account, from, to) {
debug(
`getTransactionsByDate(account: ${account.name} [${account.number}] => ${account.available}, from: ${from}, to: ${to})`,
);
const form = Object.assign({}, response.form, {
// fill the form
ctl00$ctl00: 'ctl00$BodyPlaceHolder$updatePanelSearch|ctl00$BodyPlaceHolder$lbSearch',
__EVENTTARGET: 'ctl00$BodyPlaceHolder$lbSearch',
__EVENTARGUMENT: '',
ctl00$BodyPlaceHolder$searchTypeField: '1',
ctl00$BodyPlaceHolder$radioSwitchDateRange$field$: 'ChooseDates',
ctl00$BodyPlaceHolder$dateRangeField: 'ChooseDates',
ctl00$BodyPlaceHolder$fromCalTxtBox$field: from,
ctl00$BodyPlaceHolder$toCalTxtBox$field: to,
// Add this for partial update
ctl00$BodyPlaceHolder$radioSwitchSearchType$field$: 'AllTransactions',
});
return web
.post({
url: getUrl(account.link),
form,
partial: true,
})
.then(parser.parseTransactions)
.then(refreshBase)
.then((resp) => {
Iif (!resp.more || resp.limit) {
// there is no more transactions or reached the limit.
return resp;
}
// There are more transactions available.
return (
getMoreTransactions(
Object.assign({}, resp, { form }),
Object.assign({}, account, { link: Url.parse(resp.url).path }),
)
// concat more transactions.
.then(r => Object.assign({}, r, { form, transactions: concat(resp.transactions, r.transactions) }))
.then((r) => {
debug(`getTransactionsByDate(): getMoreTransactions(): More => ${r.more}, Limit => ${r.limit}`);
Iif (r.more && r.limit) {
// if there are more transactions, however it reaches limit
// we need to send another search request to overcome the limit.
throw Object.assign(new Error('Reach transations limit'), { response: r });
}
return r;
})
.catch((error) => {
// an error happend during load more, it means that it may have more,
// however, some restriction made it stopped, so we call it again,
// but this time, we use the eariliest date from the transactions
// we retrieved so far as the toDate, so it might workaround this
// problem.
debug(error);
// if there is a `response` object attached to `error` object, that means
// it's just reach the limit, and contains transations. Otherwise, it don't
// have the transactions, a real error, then use previous `resp` instead.
const r = error.response || resp;
// find the earliest date as new 'to' date.
let timestamp = r.transactions[0].timestamp;
r.transactions.forEach((t) => {
if (timestamp > t.timestamp) {
timestamp = t.timestamp;
}
});
const newTo = toDateString(timestamp);
// Call self again
debug(`Call getTransactionsByDate() again with new 'to' date (${to} => ${newTo})`);
return (
getTransactionsByDate(
Object.assign({}, r, { form }),
Object.assign({}, account, { link: Url.parse(r.url).path }),
from,
newTo,
)
// concat more transactions
.then(rr => Object.assign({}, rr, { form, transactions: concat(r.transactions, rr.transactions) }))
.catch((err) => {
// cannot call it again, but we got some transactions at least,
// so, just call it a success.
debug(err);
debug('getTransactionsByDate(): failed to call self again to load more');
return Object.assign({}, r, { form, transactions: r.transactions });
})
);
})
);
});
}
// Get transaction history data for given time period.
//
// * `from`: Default download begin at 6 years ago. FYI, I tried 8 years
// without getting any error message, however, keep in mind that bank
// usually only stored 2 years transactions history data.
// * `to`: Default value is today.
function getTransactionHistory(
account,
from = toDateString(moment().subtract(6, 'years').valueOf()),
to = toDateString(moment().valueOf()),
) {
debug(`getTransactionHistory(account: ${account.name} [${account.number}] => ${account.available})`);
// retrieve post form and key for the given account
return web.get(getUrl(account.link)).then(parser.parseTransactionPage).then(refreshBase).then((resp) => {
const acc = Object.assign({}, account, { link: Url.parse(resp.url).path });
Eif (resp.accounts !== null) {
acc.key = resp.accounts.find(a => a.number === account.number).key;
}
// if the transaction section is lazy loading, we need do a panel update
// first, before the real search.
Iif (!resp.form.ctl00$BodyPlaceHolder$radioSwitchSearchType$field$) {
return lazyLoading(resp, acc)
.then(r => getTransactionsByDate(r, acc, from, to))
// attach pendings
.then(r => Object.assign({}, r, { pendings: resp.pendings }));
}
return getTransactionsByDate(resp, acc, from, to)
// attach pending
.then(r => Object.assign({}, r, { pendings: resp.pendings }))
.then((r) => {
debug(`getTransactionHistory(): Total received ${r.transactions.length} transactions.`);
return r;
});
});
}
// Exports
module.exports = {
logon,
getTransactionHistory,
};
|