Code Coverage |
||||||||||
Lines |
Functions and Methods |
Classes and Traits |
||||||||
| Total | |
76.92% |
10 / 13 |
|
50.00% |
1 / 2 |
CRAP | |
0.00% |
0 / 1 |
| Bitstamp_API | |
76.92% |
10 / 13 |
|
50.00% |
1 / 2 |
5.31 | |
0.00% |
0 / 1 |
| __construct | |
100.00% |
1 / 1 |
|
100.00% |
1 / 1 |
1 | |||
| get_exchange_rate | |
75.00% |
9 / 12 |
|
0.00% |
0 / 1 |
4.25 | |||
| 1 | <?php |
| 2 | /** |
| 3 | * Bitstamp exchange rate API client. |
| 4 | * |
| 5 | * @see https://www.bitstamp.net/api/ |
| 6 | * |
| 7 | * Rate limit is "8000 requests per 10 minutes". |
| 8 | * |
| 9 | * @package brianhenryie/bh-wp-bitcoin-gateway |
| 10 | */ |
| 11 | |
| 12 | namespace BrianHenryIE\WP_Bitcoin_Gateway\API\Clients\Exchange_Rate; |
| 13 | |
| 14 | use BrianHenryIE\WP_Bitcoin_Gateway\API\Clients\Exchange_Rate_API_Interface; |
| 15 | use BrianHenryIE\WP_Bitcoin_Gateway\API\Model\Exceptions\BH_WP_Bitcoin_Gateway_Exception; |
| 16 | use BrianHenryIE\WP_Bitcoin_Gateway\Brick\Money\Currency; |
| 17 | use BrianHenryIE\WP_Bitcoin_Gateway\Brick\Money\Money; |
| 18 | use Psr\Log\LoggerAwareTrait; |
| 19 | use Psr\Log\LoggerInterface; |
| 20 | |
| 21 | /** |
| 22 | * Queries API and returns Money object where 1 BTC = value of requested currency. |
| 23 | */ |
| 24 | class Bitstamp_API implements Exchange_Rate_API_Interface { |
| 25 | use LoggerAwareTrait; |
| 26 | |
| 27 | /** |
| 28 | * Constructor. |
| 29 | * |
| 30 | * @param LoggerInterface $logger Logger instance for logging API calls. |
| 31 | */ |
| 32 | public function __construct( LoggerInterface $logger ) { |
| 33 | $this->setLogger( $logger ); |
| 34 | } |
| 35 | |
| 36 | /** |
| 37 | * Fetch the current exchange from a remote API. |
| 38 | * |
| 39 | * @param Currency $currency The currency to get the Bitcoin exchange rate for. |
| 40 | * @return Money The exchange rate. |
| 41 | * @throws BH_WP_Bitcoin_Gateway_Exception When the currency is not supported (only USD, EUR, GBP are supported) or when the API request fails. |
| 42 | */ |
| 43 | public function get_exchange_rate( Currency $currency ): Money { |
| 44 | |
| 45 | $between = strtolower( "btc{$currency}" ); |
| 46 | |
| 47 | $valid_exchanges = array( 'btcusd', 'btceur', 'btcgbp' ); |
| 48 | |
| 49 | if ( ! in_array( $between, $valid_exchanges, true ) ) { |
| 50 | throw new BH_WP_Bitcoin_Gateway_Exception( 'Bitstamp only supports USD, EUR and GBP.' ); |
| 51 | } |
| 52 | |
| 53 | $url = "https://www.bitstamp.net/api/v2/ticker/{$between}/"; |
| 54 | |
| 55 | $request_response = wp_remote_get( $url ); |
| 56 | |
| 57 | if ( is_wp_error( $request_response ) ) { |
| 58 | throw new BH_WP_Bitcoin_Gateway_Exception(); |
| 59 | } |
| 60 | |
| 61 | if ( 200 !== $request_response['response']['code'] ) { |
| 62 | throw new BH_WP_Bitcoin_Gateway_Exception(); |
| 63 | } |
| 64 | |
| 65 | /** |
| 66 | * Response array. |
| 67 | * |
| 68 | * `last` Last BTC price. |
| 69 | * `high` Last 24 hours price high. |
| 70 | * `low` Last 24 hours price low. |
| 71 | * `vwap` Last 24 hours volume weighted average price. |
| 72 | * `volume` Last 24 hours volume. |
| 73 | * `bid` Highest buy order. |
| 74 | * `ask` Lowest sell order. |
| 75 | * `timestamp` Unix timestamp date and time. |
| 76 | * `open` First price of the day. |
| 77 | * |
| 78 | * // TODO: is `last` or `vwap` the correct value to use? |
| 79 | * |
| 80 | * @var array{timestamp:string, open:string, high:string, low:string, last:string, volume:string, vwap:string, bid:string, ask:string, side:string, open_24:string, percent_change_24:string, market_type:string} $response |
| 81 | */ |
| 82 | $response = json_decode( (string) $request_response['body'], true, 512, JSON_THROW_ON_ERROR ); |
| 83 | |
| 84 | return Money::of( $response['last'], $currency ); |
| 85 | } |
| 86 | } |