initial commit, PoC and some tests

.gitignore

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+vendor

README.md

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+# lightning-strike-client-js
+
+PHP client for the Lightning Strike REST API.
+
+## Install
+
+```bash
+$ composer install blockstream/lightning-strike-client
+```
+
+## Use
+
+```php
+<?php
+// initialize client
+$strike = new LightingStrikeClient('http://localhost:8009');
+
+// create invoice
+$invoice = $strike->invoice(/*msatoshi*/ 50, /*metadata*/ [ 'customer' => 'Satoshi', 'products' => [ 'potato', 'chips' ]]);
+
+echo "to pay, send $invoice->msatoshi milli-satoshis with rhash $invoice->rhash, or copy the BOLT11 payment request: $invoice->payreq"
+
+// fetch invoice by id
+$invoice = $strike->fetch('m51vlVWuIKGumTLbJ1RPb');
+```
+
+## Test
+
+```bash
+$ STRIKE_URL=http://localhost:8009 phpunit test
+```
+
+## License
+MIT

client.php

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+<?php
+require_once __DIR__.'/vendor/autoload.php';
+
+class LightningStrikeClient {
+  protected $api;
+
+  public function __construct($url) {
+    $this->api = new RestClient([ 'base_url' => $url, 'format' => 'json' ]);
+  }
+
+  public function invoice($msatoshi, $metadata=null) {
+    $res = $this->api->post('/invoice',
+      json_encode([ 'msatoshi' => $msatoshi, 'metadata' => $metadata ]),
+      [ 'Content-Type' => 'application/json' ]);
+
+    if ($res->info->http_code !== 201)
+      throw new Exception('cannot create invoice');
+
+    return $res->decode_response();
+  }
+
+  public function fetch($invoice_id) {
+    $res = $this->api->get('/invoice/' . urlencode($invoice_id));
+    if ($res->info->http_code !== 200)
+      throw new Exception('unable to fetch invoice');
+    return $res->decode_response();
+  }
+
+  public function registerHook($invoice_id, $url) {
+    $res = $this->api->post('/invoice/' . urlencode($invoice_id) . '/webhook', [ 'url' => $url ]);
+    if ($res->info->http_code !== 201)
+      throw new Exception('unable to register hook');
+    return true;
+  }
+}

composer.json

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+{
+  "name": "elementsproject/lightning-strike-client-php",
+  "description": "PHP client for the Lightning Strike REST API",
+  "license": "MIT",
+  "repositories": [{
+    "type": "vcs",
+     "url": "https://github.com/shesek/php-restclient.git"
+  }],
+  "require": {
+    "tcdent/php-restclient": "dev-master"
+  },
+  "require-dev": {
+    "phpunit/phpunit": "^6.4",
+    "clue/phar-composer": "^1.0"
+  },
+  "autoload": {
+      "files": ["client.php"]
+  }
+}