FIX: Bug: CNY price is wrong #5705

ios/Widgets/Shared/WidgetAPI.swift

@@ -37,6 +37,8 @@ class WidgetAPI {
       urlString = "https://api.wazirx.com/api/v2/tickers/btcinr"
     case "Bitstamp":
       urlString = "https://www.bitstamp.net/api/v2/ticker/btc\(endPointKey.lowercased())"
+    case "Coinbase":
+      urlString = "https://api.coinbase.com/v2/prices/BTC-\(endPointKey.uppercased())/buy"
       case "CoinGecko":
       urlString = "https://api.coingecko.com/api/v3/simple/price?ids=bitcoin&vs_currencies=\(endPointKey.lowercased())"
     default:
@@ -95,6 +97,13 @@ class WidgetAPI {
         else { break }
         let lastUpdatedString = ISO8601DateFormatter().string(from: Date())
         latestRateDataStore = WidgetDataStore(rate: rateString, lastUpdate: lastUpdatedString, rateDouble: rateDouble)
+      case "Coinbase":
+       guard let data = json["data"] as? Dictionary<String, Any>,
+              let rateString = data["amount"] as? String,
+              let rateDouble = Double(rateString)
+        else { break }
+        let lastUpdatedString = ISO8601DateFormatter().string(from: Date())
+        latestRateDataStore = WidgetDataStore(rate: rateString, lastUpdate: lastUpdatedString, rateDouble: rateDouble)
       default:
         guard let bpi = json["bpi"] as? Dictionary<String, Any>,
               let preferredCurrency = bpi[endPointKey] as? Dictionary<String, Any>,

models/fiatUnit.ts

@@ -1,6 +1,7 @@
 import untypedFiatUnit from './fiatUnits.json';
 
 export const FiatUnitSource = {
+  Coinbase: 'Coinbase',
   CoinDesk: 'CoinDesk',
   CoinGecko: 'CoinGecko',
   Yadio: 'Yadio',
@@ -11,6 +12,21 @@ export const FiatUnitSource = {
 } as const;
 
 const RateExtractors = {
+  Coinbase: async (ticker: string): Promise<number> => {
+    let json;
+    try {
+      const res = await fetch(`https://api.coinbase.com/v2/prices/BTC-${ticker.toUpperCase()}/buy`);
+      json = await res.json();
+    } catch (e: any) {
+      throw new Error(`Could not update rate for ${ticker}: ${e.message}`);
+    }
+    let rate = json?.data?.amount;
+    if (!rate) throw new Error(`Could not update rate for ${ticker}: data is wrong`);
+
+    rate = Number(rate);
+    if (!(rate >= 0)) throw new Error(`Could not update rate for ${ticker}: data is wrong`);
+    return rate;
+  },
   CoinDesk: async (ticker: string): Promise<number> => {
     let json;
     try {

models/fiatUnits.json

@@ -68,7 +68,7 @@
     "CNY": {
         "endPointKey": "CNY",
         "locale": "zh-CN",
-        "source": "CoinDesk",
+        "source": "Coinbase",
         "symbol": "¥"
     },
     "COP": {