REST API: implement POST link service

6 files changed, 284 insertions, 7 deletions

diff --git a/application/api/ApiUtils.php b/application/api/ApiUtils.php
index d4015865..b8155a34 100644
--- a/application/api/ApiUtils.php
+++ b/application/api/ApiUtils.php
@@ -12,7 +12,7 @@ class ApiUtils
     /**
      * Validates a JWT token authenticity.
      *
-     * @param string $token  JWT token extracted from the headers.
+     * @param string $token JWT token extracted from the headers.
      * @param string $secret API secret set in the settings.
      *
      * @throws ApiAuthorizationException the token is not valid.
@@ -50,7 +50,7 @@ class ApiUtils
     /**
      * Format a Link for the REST API.
      *
-     * @param array  $link     Link data read from the datastore.
+     * @param array $link Link data read from the datastore.
      * @param string $indexUrl Shaarli's index URL (used for relative URL).
      *
      * @return array Link data formatted for the REST API.
@@ -77,4 +77,35 @@ class ApiUtils
         }
         return $out;
     }
+
+    /**
+     * Convert a link given through a request, to a valid link for LinkDB.
+     *
+     * If no URL is provided, it will generate a local note URL.
+     * If no title is provided, it will use the URL as title.
+     *
+     * @param array  $input          Request Link.
+     * @param bool   $defaultPrivate Request Link.
+     *
+     * @return array Formatted link.
+     */
+    public static function buildLinkFromRequest($input, $defaultPrivate)
+    {
+        $input['url'] = ! empty($input['url']) ? cleanup_url($input['url']) : '';
+        if (isset($input['private'])) {
+            $private = filter_var($input['private'], FILTER_VALIDATE_BOOLEAN);
+        } else {
+            $private = $defaultPrivate;
+        }
+
+        $link = [
+            'title'         => ! empty($input['title']) ? $input['title'] : $input['url'],
+            'url'           => $input['url'],
+            'description'   => ! empty($input['description']) ? $input['description'] : '',
+            'tags'          => ! empty($input['tags']) ? implode(' ', $input['tags']) : '',
+            'private'       => $private,
+            'created'       => new \DateTime(),
+        ];
+        return $link;
+    }
 }
diff --git a/application/api/controllers/ApiController.php b/application/api/controllers/ApiController.php
index 1dd47f17..f35b923a 100644
--- a/application/api/controllers/ApiController.php
+++ b/application/api/controllers/ApiController.php
@@ -51,4 +51,14 @@ abstract class ApiController
             $this->jsonStyle = null;
         }
     }
+
+    /**
+     * Get the container.
+     *
+     * @return Container
+     */
+    public function getCi()
+    {
+        return $this->ci;
+    }
 }
diff --git a/application/api/controllers/Links.php b/application/api/controllers/Links.php
index d4f1a09c..0db10fd0 100644
--- a/application/api/controllers/Links.php
+++ b/application/api/controllers/Links.php
@@ -97,11 +97,53 @@ class Links extends ApiController
      */
     public function getLink($request, $response, $args)
     {
-        if (! isset($this->linkDb[$args['id']])) {
+        if (!isset($this->linkDb[$args['id']])) {
             throw new ApiLinkNotFoundException();
         }
         $index = index_url($this->ci['environment']);
         $out = ApiUtils::formatLink($this->linkDb[$args['id']], $index);
+
         return $response->withJson($out, 200, $this->jsonStyle);
     }
+
+    /**
+     * Creates a new link from posted request body.
+     *
+     * @param Request  $request  Slim request.
+     * @param Response $response Slim response.
+     *
+     * @return Response response.
+     */
+    public function postLink($request, $response)
+    {
+        $data = $request->getParsedBody();
+        $link = ApiUtils::buildLinkFromRequest($data, $this->conf->get('privacy.default_private_links'));
+        // duplicate by URL, return 409 Conflict
+        if (! empty($link['url']) && ! empty($dup = $this->linkDb->getLinkFromUrl($link['url']))) {
+            return $response->withJson(
+                ApiUtils::formatLink($dup, index_url($this->ci['environment'])),
+                409,
+                $this->jsonStyle
+            );
+        }
+
+        $link['id'] = $this->linkDb->getNextId();
+        $link['shorturl'] = link_small_hash($link['created'], $link['id']);
+
+        // note: general relative URL
+        if (empty($link['url'])) {
+            $link['url'] = '?' . $link['shorturl'];
+        }
+
+        if (empty($link['title'])) {
+            $link['title'] = $link['url'];
+        }
+
+        $this->linkDb[$link['id']] = $link;
+        $this->linkDb->save($this->conf->get('resource.page_cache'));
+        $out = ApiUtils::formatLink($link, index_url($this->ci['environment']));
+        $redirect = $this->ci->router->relativePathFor('getLink', ['id' => $link['id']]);
+        return $response->withAddedHeader('Location', $redirect)
+                        ->withJson($out, 201, $this->jsonStyle);
+    }
 }
diff --git a/index.php b/index.php
index 5c21c2f6..021fc6e9 100644
--- a/index.php
+++ b/index.php
@@ -2240,9 +2240,10 @@ $app = new \Slim\App($container);
 
 // REST API routes
 $app->group('/api/v1', function() {
-    $this->get('/info', '\Shaarli\Api\Controllers\Info:getInfo');
-    $this->get('/links', '\Shaarli\Api\Controllers\Links:getLinks');
-    $this->get('/links/{id:[\d]+}', '\Shaarli\Api\Controllers\Links:getLink');
+    $this->get('/info', '\Shaarli\Api\Controllers\Info:getInfo')->setName('getInfo');
+    $this->get('/links', '\Shaarli\Api\Controllers\Links:getLinks')->setName('getLinks');
+    $this->get('/links/{id:[\d]+}', '\Shaarli\Api\Controllers\Links:getLink')->setName('getLink');
+    $this->post('/links', '\Shaarli\Api\Controllers\Links:postLink')->setName('postLink');
 })->add('\Shaarli\Api\ApiMiddleware');
 
 $response = $app->run(true);
diff --git a/tests/api/controllers/PostLinkTest.php b/tests/api/controllers/PostLinkTest.php
new file mode 100644
index 00000000..3ed7bcb0
--- /dev/null
+++ b/tests/api/controllers/PostLinkTest.php
@@ -0,0 +1,193 @@
+<?php
+
+namespace Shaarli\Api\Controllers;
+
+
+use Shaarli\Config\ConfigManager;
+use Slim\Container;
+use Slim\Http\Environment;
+use Slim\Http\Request;
+use Slim\Http\Response;
+
+/**
+ * Class PostLinkTest
+ *
+ * Test POST Link REST API service.
+ *
+ * @package Shaarli\Api\Controllers
+ */
+class PostLinkTest extends \PHPUnit_Framework_TestCase
+{
+    /**
+     * @var string datastore to test write operations
+     */
+    protected static $testDatastore = 'sandbox/datastore.php';
+
+    /**
+     * @var ConfigManager instance
+     */
+    protected $conf;
+
+    /**
+     * @var \ReferenceLinkDB instance.
+     */
+    protected $refDB = null;
+
+    /**
+     * @var Container instance.
+     */
+    protected $container;
+
+    /**
+     * @var Links controller instance.
+     */
+    protected $controller;
+
+    /**
+     * Number of JSON field per link.
+     */
+    const NB_FIELDS_LINK = 9;
+
+    /**
+     * Before every test, instantiate a new Api with its config, plugins and links.
+     */
+    public function setUp()
+    {
+        $this->conf = new ConfigManager('tests/utils/config/configJson.json.php');
+        $this->refDB = new \ReferenceLinkDB();
+        $this->refDB->write(self::$testDatastore);
+
+        $this->container = new Container();
+        $this->container['conf'] = $this->conf;
+        $this->container['db'] = new \LinkDB(self::$testDatastore, true, false);
+
+        $this->controller = new Links($this->container);
+
+        $mock = $this->getMock('\Slim\Router', ['relativePathFor']);
+        $mock->expects($this->any())
+             ->method('relativePathFor')
+             ->willReturn('api/v1/links/1');
+
+        // affect @property-read... seems to work
+        $this->controller->getCi()->router = $mock;
+
+        // Used by index_url().
+        $this->controller->getCi()['environment'] = [
+            'SERVER_NAME' => 'domain.tld',
+            'SERVER_PORT' => 80,
+            'SCRIPT_NAME' => '/',
+        ];
+    }
+
+    /**
+     * After every test, remove the test datastore.
+     */
+    public function tearDown()
+    {
+        @unlink(self::$testDatastore);
+    }
+
+    /**
+     * Test link creation without any field: creates a blank note.
+     */
+    public function testPostLinkMinimal()
+    {
+        $env = Environment::mock([
+            'REQUEST_METHOD' => 'POST',
+        ]);
+
+        $request = Request::createFromEnvironment($env);
+
+        $response = $this->controller->postLink($request, new Response());
+        $this->assertEquals(201, $response->getStatusCode());
+        $this->assertEquals('api/v1/links/1', $response->getHeader('Location')[0]);
+        $data = json_decode((string) $response->getBody(), true);
+        $this->assertEquals(self::NB_FIELDS_LINK, count($data));
+        $this->assertEquals(43, $data['id']);
+        $this->assertRegExp('/[\w-_]{6}/', $data['shorturl']);
+        $this->assertEquals('http://domain.tld/?' . $data['shorturl'], $data['url']);
+        $this->assertEquals('?' . $data['shorturl'], $data['title']);
+        $this->assertEquals('', $data['description']);
+        $this->assertEquals([], $data['tags']);
+        $this->assertEquals(false, $data['private']);
+        $this->assertTrue(new \DateTime('5 seconds ago') < \DateTime::createFromFormat(\DateTime::ATOM, $data['created']));
+        $this->assertEquals('', $data['updated']);
+    }
+
+    /**
+     * Test link creation with all available fields.
+     */
+    public function testPostLinkFull()
+    {
+        $link = [
+            'url' => 'website.tld/test?foo=bar',
+            'title' => 'new entry',
+            'description' => 'shaare description',
+            'tags' => ['one', 'two'],
+            'private' => true,
+        ];
+        $env = Environment::mock([
+            'REQUEST_METHOD' => 'POST',
+            'CONTENT_TYPE' => 'application/json'
+        ]);
+
+        $request = Request::createFromEnvironment($env);
+        $request = $request->withParsedBody($link);
+        $response = $this->controller->postLink($request, new Response());
+
+        $this->assertEquals(201, $response->getStatusCode());
+        $this->assertEquals('api/v1/links/1', $response->getHeader('Location')[0]);
+        $data = json_decode((string) $response->getBody(), true);
+        $this->assertEquals(self::NB_FIELDS_LINK, count($data));
+        $this->assertEquals(43, $data['id']);
+        $this->assertRegExp('/[\w-_]{6}/', $data['shorturl']);
+        $this->assertEquals('http://' . $link['url'], $data['url']);
+        $this->assertEquals($link['title'], $data['title']);
+        $this->assertEquals($link['description'], $data['description']);
+        $this->assertEquals($link['tags'], $data['tags']);
+        $this->assertEquals(true, $data['private']);
+        $this->assertTrue(new \DateTime('2 seconds ago') < \DateTime::createFromFormat(\DateTime::ATOM, $data['created']));
+        $this->assertEquals('', $data['updated']);
+    }
+
+    /**
+     * Test link creation with an existing link (duplicate URL). Should return a 409 HTTP error and the existing link.
+     */
+    public function testPostLinkDuplicate()
+    {
+        $link = [
+            'url' => 'mediagoblin.org/',
+            'title' => 'new entry',
+            'description' => 'shaare description',
+            'tags' => ['one', 'two'],
+            'private' => true,
+        ];
+        $env = Environment::mock([
+            'REQUEST_METHOD' => 'POST',
+            'CONTENT_TYPE' => 'application/json'
+        ]);
+
+        $request = Request::createFromEnvironment($env);
+        $request = $request->withParsedBody($link);
+        $response = $this->controller->postLink($request, new Response());
+
+        $this->assertEquals(409, $response->getStatusCode());
+        $data = json_decode((string) $response->getBody(), true);
+        $this->assertEquals(self::NB_FIELDS_LINK, count($data));
+        $this->assertEquals(7, $data['id']);
+        $this->assertEquals('IuWvgA', $data['shorturl']);
+        $this->assertEquals('http://mediagoblin.org/', $data['url']);
+        $this->assertEquals('MediaGoblin', $data['title']);
+        $this->assertEquals('A free software media publishing platform #hashtagOther', $data['description']);
+        $this->assertEquals(['gnu', 'media', 'web', '.hidden', 'hashtag'], $data['tags']);
+        $this->assertEquals(false, $data['private']);
+        $this->assertEquals(
+            \DateTime::createFromFormat(\LinkDB::LINK_DATE_FORMAT, '20130614_184135'),
+            \DateTime::createFromFormat(\DateTime::ATOM, $data['created'])
+        );
+        $this->assertEquals(
+            \DateTime::createFromFormat(\LinkDB::LINK_DATE_FORMAT, '20130615_184230'),
+            \DateTime::createFromFormat(\DateTime::ATOM, $data['updated'])
+        );
+    }
+}
diff --git a/tests/utils/ReferenceLinkDB.php b/tests/utils/ReferenceLinkDB.php
index 36d58c68..1f4b3063 100644
--- a/tests/utils/ReferenceLinkDB.php
+++ b/tests/utils/ReferenceLinkDB.php
@@ -56,7 +56,7 @@ class ReferenceLinkDB
             0,
             DateTime::createFromFormat(LinkDB::LINK_DATE_FORMAT, '20130614_184135'),
             'gnu media web .hidden hashtag',
-            null,
+            DateTime::createFromFormat(LinkDB::LINK_DATE_FORMAT, '20130615_184230'),
             'IuWvgA'
         );