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<?php |
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namespace GraphQL\Examples\Blog\Data; |
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/** |
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* This is just a simple in-memory data holder for the sake of example. |
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* Data layer for real app may use Doctrine or query the database directly (e.g. in CQRS style) |
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*/ |
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class DataSource |
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{ |
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private static $users = []; |
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private static $stories = []; |
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private static $storyLikes = []; |
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private static $comments = []; |
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private static $storyComments = []; |
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private static $commentReplies = []; |
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private static $storyMentions = []; |
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public static function init() |
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{ |
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self::$users = [ |
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'1' => new User([ |
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'id' => '1', |
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'email' => '[email protected]', |
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'firstName' => 'John', |
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'lastName' => 'Doe' |
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]), |
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'2' => new User([ |
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'id' => '2', |
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'email' => '[email protected]', |
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'firstName' => 'Jane', |
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'lastName' => 'Doe' |
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]), |
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'3' => new User([ |
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'id' => '3', |
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'email' => '[email protected]', |
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'firstName' => 'John', |
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'lastName' => 'Doe' |
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]), |
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]; |
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self::$stories = [ |
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'1' => new Story(['id' => '1', 'authorId' => '1', 'body' => '<h1>GraphQL is awesome!</h1>']), |
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'2' => new Story(['id' => '2', 'authorId' => '1', 'body' => '<a>Test this</a>']), |
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'3' => new Story(['id' => '3', 'authorId' => '3', 'body' => "This\n<br>story\n<br>spans\n<br>newlines"]), |
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]; |
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self::$storyLikes = [ |
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'1' => ['1', '2', '3'], |
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'2' => [], |
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'3' => ['1'] |
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]; |
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self::$comments = [ |
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// thread #1: |
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'100' => new Comment(['id' => '100', 'authorId' => '3', 'storyId' => '1', 'body' => 'Likes']), |
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'110' => new Comment(['id' =>'110', 'authorId' =>'2', 'storyId' => '1', 'body' => 'Reply <b>#1</b>', 'parentId' => '100']), |
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'111' => new Comment(['id' => '111', 'authorId' => '1', 'storyId' => '1', 'body' => 'Reply #1-1', 'parentId' => '110']), |
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'112' => new Comment(['id' => '112', 'authorId' => '3', 'storyId' => '1', 'body' => 'Reply #1-2', 'parentId' => '110']), |
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'113' => new Comment(['id' => '113', 'authorId' => '2', 'storyId' => '1', 'body' => 'Reply #1-3', 'parentId' => '110']), |
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'114' => new Comment(['id' => '114', 'authorId' => '1', 'storyId' => '1', 'body' => 'Reply #1-4', 'parentId' => '110']), |
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'115' => new Comment(['id' => '115', 'authorId' => '3', 'storyId' => '1', 'body' => 'Reply #1-5', 'parentId' => '110']), |
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'116' => new Comment(['id' => '116', 'authorId' => '1', 'storyId' => '1', 'body' => 'Reply #1-6', 'parentId' => '110']), |
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'117' => new Comment(['id' => '117', 'authorId' => '2', 'storyId' => '1', 'body' => 'Reply #1-7', 'parentId' => '110']), |
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'120' => new Comment(['id' => '120', 'authorId' => '3', 'storyId' => '1', 'body' => 'Reply #2', 'parentId' => '100']), |
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'130' => new Comment(['id' => '130', 'authorId' => '3', 'storyId' => '1', 'body' => 'Reply #3', 'parentId' => '100']), |
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'200' => new Comment(['id' => '200', 'authorId' => '2', 'storyId' => '1', 'body' => 'Me2']), |
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'300' => new Comment(['id' => '300', 'authorId' => '3', 'storyId' => '1', 'body' => 'U2']), |
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# thread #2: |
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'400' => new Comment(['id' => '400', 'authorId' => '2', 'storyId' => '2', 'body' => 'Me too']), |
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'500' => new Comment(['id' => '500', 'authorId' => '2', 'storyId' => '2', 'body' => 'Nice!']), |
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]; |
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self::$storyComments = [ |
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'1' => ['100', '200', '300'], |
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'2' => ['400', '500'] |
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]; |
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self::$commentReplies = [ |
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'100' => ['110', '120', '130'], |
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'110' => ['111', '112', '113', '114', '115', '116', '117'], |
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]; |
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self::$storyMentions = [ |
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'1' => [ |
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self::$users['2'] |
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], |
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'2' => [ |
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self::$stories['1'], |
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self::$users['3'] |
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] |
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]; |
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} |
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public static function findUser($id) |
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{ |
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return isset(self::$users[$id]) ? self::$users[$id] : null; |
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} |
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public static function findStory($id) |
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{ |
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return isset(self::$stories[$id]) ? self::$stories[$id] : null; |
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} |
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public static function findComment($id) |
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{ |
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return isset(self::$comments[$id]) ? self::$comments[$id] : null; |
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} |
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public static function findLastStoryFor($authorId) |
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{ |
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$storiesFound = array_filter(self::$stories, function(Story $story) use ($authorId) { |
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return $story->authorId == $authorId; |
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}); |
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return !empty($storiesFound) ? $storiesFound[count($storiesFound) - 1] : null; |
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} |
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public static function findLikes($storyId, $limit) |
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{ |
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$likes = isset(self::$storyLikes[$storyId]) ? self::$storyLikes[$storyId] : []; |
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$result = array_map( |
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function($userId) { |
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return self::$users[$userId]; |
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}, |
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$likes |
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); |
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return array_slice($result, 0, $limit); |
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} |
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public static function isLikedBy($storyId, $userId) |
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{ |
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$subscribers = isset(self::$storyLikes[$storyId]) ? self::$storyLikes[$storyId] : []; |
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return in_array($userId, $subscribers); |
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} |
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public static function getUserPhoto($userId, $size) |
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{ |
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return new Image([ |
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'id' => $userId, |
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'type' => Image::TYPE_USERPIC, |
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'size' => $size, |
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'width' => rand(100, 200), |
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'height' => rand(100, 200) |
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]); |
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} |
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public static function findLatestStory() |
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{ |
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return array_pop(self::$stories); |
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} |
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public static function findStories($limit, $afterId = null) |
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{ |
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$start = $afterId ? (int) array_search($afterId, array_keys(self::$stories)) + 1 : 0; |
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return array_slice(array_values(self::$stories), $start, $limit); |
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} |
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public static function findComments($storyId, $limit = 5, $afterId = null) |
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{ |
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$storyComments = isset(self::$storyComments[$storyId]) ? self::$storyComments[$storyId] : []; |
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$start = isset($after) ? (int) array_search($afterId, $storyComments) + 1 : 0; |
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$storyComments = array_slice($storyComments, $start, $limit); |
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return array_map( |
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function($commentId) { |
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return self::$comments[$commentId]; |
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}, |
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$storyComments |
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); |
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} |
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public static function findReplies($commentId, $limit = 5, $afterId = null) |
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{ |
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$commentReplies = isset(self::$commentReplies[$commentId]) ? self::$commentReplies[$commentId] : []; |
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$start = isset($after) ? (int) array_search($afterId, $commentReplies) + 1: 0; |
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$commentReplies = array_slice($commentReplies, $start, $limit); |
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return array_map( |
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function($replyId) { |
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return self::$comments[$replyId]; |
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}, |
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$commentReplies |
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); |
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} |
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public static function countComments($storyId) |
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{ |
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return isset(self::$storyComments[$storyId]) ? count(self::$storyComments[$storyId]) : 0; |
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} |
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public static function countReplies($commentId) |
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{ |
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return isset(self::$commentReplies[$commentId]) ? count(self::$commentReplies[$commentId]) : 0; |
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} |
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public static function findStoryMentions($storyId) |
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{ |
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return isset(self::$storyMentions[$storyId]) ? self::$storyMentions[$storyId] :[]; |
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} |
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} |
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