icd/mt940-mbank-ts
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Kuba Orlik 2023-12-10 15:15:13 +01:00
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README.md Normal file
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# Mbank mt940 converter
## Testowanie
Wygeneruj raz plik mt940 oraz csv za ten sam okres, i wykonaj:
```
node . convert < tests/real_csv.csv > tests/new.txt && diff --side-by-side --color tests/real_mt940.txt tests/new.txt
```

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{
"schemaVersion": 2,
"templateId": "node/20"
}

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package-lock.json generated
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{ {
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"license": "ISC", "license": "ISC",
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@ -3052,6 +3477,17 @@
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"url": "https://github.com/chalk/supports-color?sponsor=1" "url": "https://github.com/chalk/supports-color?sponsor=1"
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22
package.json
View File

@ -1,24 +1,29 @@
{ {
"name": "module-starter", "name": "mbank-mt940",
"version": "0.0.1", "version": "0.1.0",
"description": "module template", "description": "module template",
"main": "lib/index.js", "main": "lib/cli.js",
"scripts": { "scripts": {
"test": "mocha", "test": "mocha",
"build": "tsc", "build": "npm run build-node && npm run build-browser",
"build-node": "tsc",
"build-browser": "esbuild src/browser.ts --bundle --minify --sourcemap --target=firefox120 --outfile=public/bundle.js",
"prepare": "npm run build", "prepare": "npm run build",
"clean-coverage": "rm -rf coverage .nyc_output .xunit", "clean-coverage": "rm -rf coverage .nyc_output .xunit",
"coverage": "npm run clean-coverage && nyc mocha", "coverage": "npm run clean-coverage && nyc mocha",
"test-reports": "npm run clean-coverage && nyc --reporter clover mocha --reporter xunit --reporter-option output=.xunit", "test-reports": "npm run clean-coverage && nyc --reporter clover mocha --reporter xunit --reporter-option output=.xunit",
"coverage-html": "npm run test-reports && nyc report --reporter lcov && xdg-open coverage/lcov-report/index.html" "coverage-html": "npm run test-reports && nyc report --reporter lcov && xdg-open coverage/lcov-report/index.html",
"start": "http-server public -p 8080"
}, },
"author": "", "author": "",
"license": "ISC", "license": "ISC",
"devDependencies": { "devDependencies": {
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"ts-node": "^10.9.1", "ts-node": "^10.9.1",
"typescript": "^5.0.4" "typescript": "^5.0.4"
}, },
"types": "./@types/index.d.ts" "types": "./@types/index.d.ts",
"dependencies": {
"iconv": "^3.0.1",
"iconv-lite": "^0.6.3",
"yargs": "^17.7.2"
}
} }

22
public/bundle.js Normal file
View File

@ -0,0 +1,22 @@
(()=>{function l(e,n){let t=[];for(let o=0;o<e.length;o+=n){let r=e.slice(o,o+n);t.push(r)}return t}function p(e,n){let t=[...e];for(;t.length<n;)t.push("");return t}function m(e,n,t="~"){return e.map((o,r)=>`${t}${n+r}${o}`)}function _(e){return e.replace(/ +/g," ")}var g=class{constructor(n,t,o,r){this.number=n;this.initial_balance=t;this.closing_balance=o;this.currency=r}},d=class e{constructor(n,t,o,r,s,i,c,a){this.acc_date=n;this.op_date=t;this.description=o;this.title=r;this.person=s;this.account_number=i;this.amount=c;this.balance_after=a}static{this.counter=function*(){let n=1;for(;;)yield n.toString().padStart(11,"0"),n++}()}formatTitle(){return m(p(l(this.title.trim(),27),9),20).join(`
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~30${this.account_number.slice(2,10)}
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${this.formatPerson()}
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~38PL${this.account_number}
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~63`}},b=class{constructor(n,t){this.date_start=n;this.date_end=t}},h=class{},f=class extends h{read_csv(n){let t=n.split(`\r
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:60F:D${u(r.date_start)}${t.currency}${$(t.initial_balance)}
${o.map(i=>i.toMT940()).join(`
`)}
:62F:D${u(r.date_end)}${t.currency}${$(t.closing_balance)}`,range:r}}function A(e,n,t){var o=new Blob([e],{type:t}),r=document.createElement("a"),s=URL.createObjectURL(o);r.href=s,r.download=n,document.body.appendChild(r),r.click(),setTimeout(function(){document.body.removeChild(r),window.URL.revokeObjectURL(s)},0)}async function R(){console.log("browser.ts:2");let e=document.getElementById("csv");if(!e||!(e instanceof HTMLInputElement))throw console.log("browser.ts:5"),new Error("coudl not find the csv input");var n=e.value.replace("C:\\fakepath\\","");let t=e.files;if(!t)throw new Error("no files in the input");let o=await t[0].arrayBuffer(),r=new TextDecoder("windows-1250").decode(o),s=w(r);A(s.output,`raport-${s.range.date_start.getFullYear()}-${(s.range.date_start.getMonth()+1).toString().padStart(2,"0")}.mt940`,"text")}document.querySelector("#submit")?.addEventListener("click",R);console.log("added handler to",document.querySelector("#submit"));})();
//# sourceMappingURL=bundle.js.map

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<!DOCTYPE html>
<html>
<head>
<title>mBank mt940 konwerter</title>
</head>
<style>
p {
max-width: 600px;
}
input,
button {
height: 40px;
font-size: 20px;
}
</style>
<body>
<h1>mBank mt940 konwerter</h1>
<p>
Za pomocą tego narzędzia za darmo przekonwertujesz plik CSV
wygenerowany przez mbank do formatu mt940. Konwersja odbywa sie w
przeglądarce, Twoje dane nie są nigdzie wysyłane. Dla pewności
możesz na czas konwersji wyłączyć dostęp do Internetu na Twoim
komputerze, zamknąć tę stronę, i włączyć dostęp do Internetu
ponownie.
</p>
<div><input type="file" name="csv" id="csv" /></div>
<button id="submit">Konwertuj</button>
<p>
Aplikacja została wykonana przez
<a href="https://www.internet-czas-dzialac.pl/">
Fundację „Internet. Czas działać!”
</a>
i jest utrzymywana przez
<a href="https://www.sealcode.it/">Sealcode</a>
</p>
<script src="bundle.js"></script>
</body>
</html>

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import { convert } from ".";
function download(data: string, filename: string, type: string) {
var file = new Blob([data], { type: type });
var a = document.createElement("a"),
url = URL.createObjectURL(file);
a.href = url;
a.download = filename;
document.body.appendChild(a);
a.click();
setTimeout(function () {
document.body.removeChild(a);
window.URL.revokeObjectURL(url);
}, 0);
}
async function handle() {
console.log("browser.ts:2");
const csv_input = document.getElementById("csv");
if (!csv_input || !(csv_input instanceof HTMLInputElement)) {
console.log("browser.ts:5");
throw new Error("coudl not find the csv input");
}
var fileName = csv_input.value.replace("C:\\fakepath\\", "");
const files = csv_input.files;
if (!files) {
throw new Error("no files in the input");
}
const buffer = await files[0].arrayBuffer();
const string = new TextDecoder("windows-1250").decode(buffer);
const result = convert(string);
download(
result.output,
`raport-${result.range.date_start.getFullYear()}-${(
result.range.date_start.getMonth() + 1
)
.toString()
.padStart(2, "0")}.mt940`,
"text"
);
}
document.querySelector("#submit")?.addEventListener("click", handle);
console.log("added handler to", document.querySelector("#submit"));

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import { promises as fs } from "fs";
import iconv from "iconv-lite";
import yargs from "yargs";
import { convert } from ".";
const path = process.argv.at(-1);
if (!path) {
console.error("Podaj ścieżkę do pliku jako argument w CLI");
process.exit();
}
yargs
.scriptName("mbank-mt940")
.usage("$0 <cmd> [args]")
.command(
"convert",
"onvert from csv to mt940",
(yargs) => {
yargs.option("i", {
alias: "input",
type: "string",
describe: "path to the mbank csv file",
demandOption: false,
});
yargs.option("o", {
alias: "output",
type: "string",
describe: "where to save the mt940 file",
demandOption: false,
});
},
async function (argv) {
let content: Buffer;
const has_path = argv.input && argv.input !== "--";
if (has_path) {
console.error("Reading from ", argv.input);
content = await fs.readFile(argv.input as string, {
encoding: null,
});
} else {
console.error("reading CSV from stdin...");
content = await new Promise((resolve, reject) => {
let chunks: Buffer[] = [];
process.stdin.on("data", (chunk) => {
chunks.push(chunk);
});
process.stdin.on("end", () => {
const buffer = Buffer.concat(chunks);
resolve(buffer);
});
});
}
const result = convert(iconv.decode(content, "cp1250"));
console.log(result);
}
)
.help().argv;

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src/example.test.ts
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@ -1,11 +0,0 @@
import { Example } from "./index";
import * as assert from "assert";
describe("Example", () => {
describe("example", () => {
it("should equal 'example'", () => {
const example = new Example();
assert.equal(example.example(), "example");
});
});
});

187
src/index.ts
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@ -1,5 +1,186 @@
export class Example { import {
example(): string { addLineNumbers,
return "example"; chunks,
fillWithEmpty,
removeRepeatingSpace,
} from "./utils";
class Account {
constructor(
public number: string,
public initial_balance: number,
public closing_balance: number,
public currency: string
) {}
}
class Transaction {
constructor(
public acc_date: Date,
public op_date: Date,
public description: string,
public title: string,
public person: string,
public account_number: string,
public amount: number,
public balance_after: number
) {}
public static counter = (function* () {
let c = 1;
while (true) {
yield c.toString().padStart(11, "0");
c++;
}
})();
formatTitle() {
return addLineNumbers(
fillWithEmpty(chunks(this.title.trim(), 27), 9),
20
).join("\n");
}
formatPerson() {
return addLineNumbers(
fillWithEmpty(
chunks(removeRepeatingSpace(this.person).trim(), 27),
2
).slice(0, 2),
32
).join("\n");
}
toMT940() {
const prefixes = { incoming: "150", outcoming: "169" };
const prefix = this.amount > 0 ? prefixes.incoming : prefixes.outcoming;
return `:61:${mtDate(this.acc_date)}${mtDate(this.op_date).slice(
2
)}C${mtAmount(this.amount)}S${prefix}${Transaction.counter.next().value}
:86:${prefix}
:86:${prefix}~00B${prefix}${this.description.slice(0, 23)}
${this.formatTitle()}
~29${this.account_number}
~30${this.account_number.slice(2, 10)}
~31${this.account_number.slice(10)}
${this.formatPerson()}
~34${prefix}
~38PL${this.account_number}
~62
~63`;
} }
} }
class Range {
constructor(public date_start: Date, public date_end: Date) {}
}
abstract class CSVParser {
abstract read_csv(content_utf8: string): {
account: Account;
range: Range;
transactions: Transaction[];
};
}
class mBankParser extends CSVParser {
read_csv(content_utf8: string): {
account: Account;
range: Range;
transactions: Transaction[];
} {
const lines = content_utf8.split("\r\n").map((line) => line.split(";"));
let last = 0;
while (!lines[last][0].startsWith("Niniejszy dokument sporządzono")) {
last++;
}
const account = new Account(
lines[20][0],
this.parseAmount(lines[35][1]),
this.parseAmount(lines[last - 2][7]),
lines[18][0]
);
const range = new Range(
this.parseDate(lines[14][0]),
this.parseDate(lines[14][1])
);
const transactions = [];
for (let i = 38; i <= last - 5; i++) {
const line = lines[i];
if (line.length != 9) {
throw new Error(
"Wrong amount of columns! maybe a semicolon got stuck in a transaction description?"
);
}
const date_acc = new Date(line[0]);
const date_op = new Date(line[1]);
const [description, title, person, account_number] = line
.slice(2)
.map(this.trimString);
const [amount, balance_after] = line
.slice(6)
.map((s) => this.parseAmount(s));
transactions.push(
new Transaction(
date_acc,
date_op,
description,
title,
person,
account_number,
amount,
balance_after
)
);
}
return { account, range, transactions };
}
parseAmount(s: string): number {
return parseFloat(s.replace(/[^0-9,-]/g, "").replace(",", "."));
}
parseDate(s: string): Date {
const [day, month, year] = s.split(".").map((s) => parseInt(s));
const d = new Date();
d.setHours(0);
d.setMinutes(0);
d.setSeconds(0);
d.setMilliseconds(0);
d.setDate(day);
d.setMonth(month - 1);
d.setFullYear(year);
return d;
}
trimString(s: string): string {
//removes redundant quotes at the beginning or end of the transaction
return s.replaceAll(/(^["']|["']$)/g, "");
}
}
function mtDate(d: Date) {
return `${d.getFullYear() - 2000}${(d.getMonth() + 1)
.toString()
.padStart(2, "0")}${d.getDate().toString().padStart(2, "0")}`;
}
function mtAmount(n: number) {
return Math.abs(n).toString().replace(".", ",");
}
export function convert(csv_utf8: string): { output: string; range: Range } {
const result = new mBankParser().read_csv(csv_utf8);
const { account, transactions, range } = result;
const string = `:20:MT940
:25:/PL${account.number.replaceAll(/[^0-9]/g, "")}
:28C:${mtDate(range.date_start)}
:60F:D${mtDate(range.date_start)}${account.currency}${mtAmount(
account.initial_balance
)}
${transactions.map((t) => t.toMT940()).join("\n")}
:62F:D${mtDate(range.date_end)}${account.currency}${mtAmount(
account.closing_balance
)}`;
return { output: string, range };
}

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export function chunks(s: string, chunkSize: number): string[] {
const result = [];
for (let i = 0; i < s.length; i += chunkSize) {
const chunk = s.slice(i, i + chunkSize);
result.push(chunk);
}
return result;
}
export function fillWithEmpty(array: string[], target_length: number) {
const a = [...array];
while (a.length < target_length) {
a.push("");
}
return a;
}
export function addLineNumbers(
s: string[],
start_num: number,
prefix = "~"
): string[] {
return s.map((l, i) => `${prefix}${start_num + i}${l}`);
}
export function removeRepeatingSpace(s: string) {
return s.replace(/ +/g, " ");
}

6
tsconfig.json
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@ -5,10 +5,10 @@
"noImplicitAny": true, "noImplicitAny": true,
"noImplicitThis": true, "noImplicitThis": true,
"strictNullChecks": true, "strictNullChecks": true,
"target": "ES6", "target": "ES2020",
"declaration": true, "declaration": true,
"esModuleInterop": true, "esModuleInterop": true,
"lib": ["ES6", "ESNext"], "lib": ["ES6", "ESNext", "DOM"],
"outDir": "lib", "outDir": "lib",
"checkJs": true, "checkJs": true,
"allowJs": true, "allowJs": true,
@ -17,6 +17,6 @@
"sourceMap": true, "sourceMap": true,
"skipLibCheck": true "skipLibCheck": true
}, },
"include": ["src/**/*", ], "include": ["src/**/*"],
"exclude": ["node_modules/**"] "exclude": ["node_modules/**"]
} }