From 68016e37983b882c51c6ac92da6f6cc1250676e5 Mon Sep 17 00:00:00 2001
From: ArthurHoaro <arthur@hoa.ro>
Date: Thu, 5 Jan 2017 15:58:24 +0100
Subject: REST API: implement POST link service

---
 application/api/ApiUtils.php                  | 35 +++++++++++++++++++--
 application/api/controllers/ApiController.php | 10 ++++++
 application/api/controllers/Links.php         | 44 ++++++++++++++++++++++++++-
 3 files changed, 86 insertions(+), 3 deletions(-)

(limited to 'application/api')

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);
+    }
 }
-- 
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