Merge pull request #1 from Punksolid/better-separation-of-concerns

Bitso refactor better separation of concerns

Author: Punksolid

BitsoAPI/Accounts.php

@@ -0,0 +1,98 @@
+<?php
+
+namespace BitsoAPI;
+
+class Accounts
+{
+    public function __construct(
+        private Bitso $bitso,
+    )
+    {}
+
+    public function balances(?string $asked_currency = null): array
+    {
+        /*
+        Get a user's balance.
+            Returns:
+              A list of bitso.Balance instances.
+        */
+
+        $request_path = '/api/v3/balance/';
+
+        $nonce = Client::makeNonce();
+        $HTTPMethod = 'GET';
+        $JSONPayload = '';
+        $message = $nonce.$HTTPMethod.$request_path.$JSONPayload;
+        $format = 'Bitso %s:%s:%s';
+        $signature = hash_hmac('sha256', $message, (string) $this->bitso->secret);
+        $authHeader = sprintf($format, $this->bitso->key, $nonce, $signature);
+
+        $result = $this->bitso->client->request(
+            'GET',
+            $this->bitso->url.'/api/v3/balance/',
+            [
+                'headers' => ['Authorization' => $authHeader],
+            ]
+        );
+
+        $balances_array = json_decode($result->getContent(), true, 512, JSON_THROW_ON_ERROR);
+        $balances_array = $balances_array['payload']['balances'];
+
+        if ($asked_currency !== null) {
+            $balances_array = array_filter($balances_array, fn ($balance) => $balance['currency'] === $asked_currency);
+        }
+
+        return $balances_array;
+    }
+
+    public function accountValue($in_currency = 'usd'): int
+    {
+        $fallback_currency_converted_to = 'mxn';
+        $sub_accounts = $this->balances();
+
+        $accounts = [];
+        foreach ($sub_accounts as $sub_account) {
+            $currency = $sub_account['currency'];
+            $total = $sub_account['total'];
+            if ($total === 0) { // skip zero balances
+                continue;
+            }
+            $accounts[$currency]['usd'] = 0;
+            $accounts[$currency]['mxn'] = 0;
+
+            if ($currency === $in_currency) {
+                $accounts[$currency][$in_currency] = $total;
+                $account_value[$currency] = $total;
+
+                continue;
+            }
+
+            if ($currency === $in_currency) {
+                $accounts[$currency][$in_currency] = $total;
+                $account_value[$currency] = $total;
+
+                continue;
+            }
+
+            try {
+                $book = $currency.'_'.$in_currency;
+                $book_price = $this->bitso->getPriceForBook($book);
+                $accounts[$currency][$in_currency] += $total * $book_price;
+            } catch (\Throwable) {
+                try {
+                    $book = $currency.'_'.$fallback_currency_converted_to;
+                    $book_price_in_fallback = $this->bitso->getPriceForBook($book);
+                    $accounts[$currency][$fallback_currency_converted_to] += $total * $book_price_in_fallback;
+                } catch (\Throwable) {
+                    $book = 'usd'.'_'.$currency; // ars
+
+                    $book_price_in_fallback = $this->bitso->getPriceForBook($book);
+
+                    $accounts[$currency]['usd'] = $total / $book_price_in_fallback;
+                }
+            }
+        }
+
+        return $this->bitso->getTotalInMxn($accounts);
+    }
+}