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feat(backend): Moved the unirate API to the backend

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ribardej
2025-11-11 16:01:11 +01:00
parent 8575ef8ff5
commit 5954e56956
7 changed files with 93 additions and 43 deletions
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55
7project/frontend/src/pages/Dashboard.tsx
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@@ -6,7 +6,7 @@ import BalanceChart from './BalanceChart';
import ManualManagement from './ManualManagement';
import CategoryPieChart from './CategoryPieChart';
import MockBankModal, { type MockGenerationOptions } from './MockBankModal';
import { BACKEND_URL, VITE_UNIRATE_API_KEY } from '../config';
import { BACKEND_URL } from '../config';
function formatAmount(n: number) {
return new Intl.NumberFormat(undefined, { minimumFractionDigits: 2, maximumFractionDigits: 2 }).format(n);
@@ -45,49 +45,20 @@ function CurrencyRates() {
setLoading(true);
setError(null);
const API_KEY = VITE_UNIRATE_API_KEY;
// We need to get the CZK rate as well, to use it for conversion
const allSymbols = [...TARGET_CURRENCIES, 'CZK'].join(',');
// We remove the `base` param, as the API seems to force base=USD
const UNIRATE_API_URL = `https://unirateapi.com/api/rates?api_key=${API_KEY}&symbols=${allSymbols}`;
try {
const res = await fetch(UNIRATE_API_URL);
const data: UnirateApiResponse = await res.json();
// --- THIS IS THE NEW, CORRECTED LOGIC ---
// 1. Check if the 'rates' object exists. If not, it's an error.
if (!data.rates) {
let errorMessage = data.message || (data.error ? data.error.info : 'Invalid API response');
throw new Error(errorMessage || 'Could not load rates');
}
// 2. Check that we got the base currency (USD) and our conversion currency (CZK)
if (data.base !== 'USD' || !data.rates.CZK) {
throw new Error('API response is missing required data for conversion (USD or CZK)');
}
// 3. Get our main conversion factor
const czkPerUsd = data.rates.CZK; // e.g., 23.0
// 4. Calculate the rates for our target currencies
const formattedRates = TARGET_CURRENCIES.map(code => {
const targetPerUsd = data.rates[code]; // e.g., 0.9 for EUR
// This calculates: (CZK per USD) / (TARGET per USD) = CZK per TARGET
// e.g. (23.0 CZK / 1 USD) / (0.9 EUR / 1 USD) = 25.55 CZK / 1 EUR
const rate = czkPerUsd / targetPerUsd;
return {
currencyCode: code,
rate: rate,
};
const base = BACKEND_URL.replace(/\/$/, '');
const url = `${base}/exchange-rates?symbols=${TARGET_CURRENCIES.join(',')}`;
const token = localStorage.getItem('token');
const res = await fetch(url, {
headers: token ? { Authorization: `Bearer ${token}` } : undefined,
credentials: 'include',
});
setRates(formattedRates);
if (!res.ok) {
const text = await res.text();
throw new Error(text || `Failed to load rates (${res.status})`);
}
const data: RateData[] = await res.json();
setRates(data);
} catch (err: any) {
setError(err.message || 'Could not load rates');
} finally {