Pass-through all properties when creating invoices.

To support the new `currency` and `amount` fields added in
ElementsProject/lightning-charge@4f4b1d5

README.md

@@ -1,4 +1,4 @@
-# lightning-strike-client-js
+# lightning-strike-client-php
 
 PHP client for the Lightning Strike REST API.
 
@@ -15,12 +15,15 @@ $ composer require elementsproject/lightning-strike-client-php
 $strike = new LightingStrikeClient('http://localhost:8009');
 
 // Create invoice
-$invoice = $strike->invoice(/*msatoshi*/ 50, /*metadata*/ [ 'customer' => 'Satoshi', 'products' => [ 'potato', 'chips' ]]);
+$invoice = $strike->invoice([ 'msatoshi' => 50, 'metadata' => [ 'customer' => 'Satoshi', 'products' => [ 'potato', 'chips' ] ] ]);
 
 tell_user("to pay, send $invoice->msatoshi milli-satoshis with rhash $invoice->rhash, or copy the BOLT11 payment request: $invoice->payreq");
 
 // Fetch invoice by id
 $invoice = $strike->fetch('m51vlVWuIKGumTLbJ1RPb');
+
+// Create invoice denominated in USD
+$invoice = $strike->invoice([ 'currency' => 'USD', 'amount' => 0.15 ]);
 ```
 
 TODO: document missing methods

client.php

@@ -17,10 +17,8 @@ public function __construct($url) {
    * @param object $metadata
    * @return object the invoice
    */
-  public function invoice($msatoshi, $metadata=null) {
-    $res = $this->api->post('/invoice',
-      json_encode([ 'msatoshi' => $msatoshi, 'metadata' => $metadata ]),
-      [ 'Content-Type' => 'application/json' ]);
+  public function invoice($props) {
+    $res = $this->api->post('/invoice', json_encode($props), [ 'Content-Type' => 'application/json' ]);
 
     if ($res->info->http_code !== 201) throw new Exception('saving invoice failed');
 

test.php

@@ -5,7 +5,7 @@ class LightningStrikeClientTest extends \PHPUnit\Framework\TestCase {
 
   public function test_create_invoice(){
     $strike = new LightningStrikeClient(getenv('STRIKE_URL'));
-    $invoice = $strike->invoice(50, [ 'customer' => 'Satoshi', 'products' => [ 'potato', 'chips' ]]);
+    $invoice = $strike->invoice([ 'msatoshi'  => 50, 'metadata' => [ 'customer' => 'Satoshi', 'products' => [ 'potato', 'chips' ] ] ]);
 
     $this->assertObjectHasAttribute('id', $invoice);
     $this->assertObjectHasAttribute('rhash', $invoice);
@@ -17,18 +17,18 @@ public function test_create_invoice(){
 
   public function test_fetch_invoice(){
     $strike = new LightningStrikeClient(getenv('STRIKE_URL'));
-    $saved = $strike->invoice(50, 9999);
+    $saved = $strike->invoice( [ 'msatoshi' => 50, 'metadata' => 'test_fetch_invoice' ]);
     $loaded = $strike->fetch($saved->id);
 
     $this->assertEquals($saved->id, $loaded->id);
     $this->assertEquals($saved->rhash, $loaded->rhash);
-    $this->assertEquals($loaded->metadata, 9999);
+    $this->assertEquals($loaded->metadata, 'test_fetch_invoice');
     $this->assertEquals($loaded->msatoshi, '50');
   }
 
   public function test_register_webhook(){
     $strike = new LightningStrikeClient(getenv('STRIKE_URL'));
-    $invoice = $strike->invoice(50);
+    $invoice = $strike->invoice([ 'msatoshi' => 50 ]);
     $this->assertTrue($strike->registerHook($invoice->id, 'http://example.com/'));
   }
 }