86 lines
2.6 KiB
JavaScript
86 lines
2.6 KiB
JavaScript
const UserError = require('vn-loopback/util/user-error');
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module.exports = Self => {
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Self.remoteMethodCtx('start', {
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description: 'Starts electronic payment transaction',
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accessType: 'WRITE',
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accepts: [
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{
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arg: 'amount',
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type: 'Number',
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required: true,
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}, {
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arg: 'companyId',
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type: 'Number',
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required: false,
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}, {
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arg: 'urlOk',
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type: 'String',
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required: false,
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}, {
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arg: 'urlKo',
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type: 'String',
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required: false,
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}
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],
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returns: {
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type: 'Object',
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root: true
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},
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http: {
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path: `/start`,
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verb: 'POST'
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}
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});
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Self.start = async(ctx, amount, companyId, urlOk, urlKo) => {
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const userId = ctx.req.accessToken.userId;
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const [[row]] = await Self.rawSql(
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'CALL hedera.tpvTransaction_start(?, ?, ?)', [
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amount,
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companyId,
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userId
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]);
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if (!row)
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throw new UserError('Transaction error');
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const orderId = row.transactionId.padStart(12, '0');
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const merchantUrl = row.merchantUrl ? row.merchantUrl : '';
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urlOk = urlOk ? urlOk.replace('_transactionId_', orderId) : '';
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urlKo = urlKo ? urlKo.replace('_transactionId_', orderId) : '';
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const params = {
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'Ds_Merchant_Amount': amount,
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'Ds_Merchant_Order': orderId,
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'Ds_Merchant_MerchantCode': row.merchant,
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'Ds_Merchant_Currency': row.currency,
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'Ds_Merchant_TransactionType': row.transactionType,
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'Ds_Merchant_Terminal': row.terminal,
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'Ds_Merchant_MerchantURL': merchantUrl,
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'Ds_Merchant_UrlOK': urlOk,
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'Ds_Merchant_UrlKO': urlKo
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};
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for (const param in params)
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params[param] = encodeURIComponent(params[param]);
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const json = JSON.stringify(params);
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const merchantParameters = Buffer.from(json).toString('base64');
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const signature = Self.createSignature(
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orderId,
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row.secretKey,
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merchantParameters
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);
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return {
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url: row.url,
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postValues: {
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'Ds_SignatureVersion': 'HMAC_SHA256_V1',
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'Ds_MerchantParameters': merchantParameters,
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'Ds_Signature': signature
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}
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};
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};
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};
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