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| 1 | <?php |
| 2 | namespace Ably; |
| 3 | |
| 4 | use Ably\Exceptions\AblyException; |
| 5 | use Ably\Models\ChannelOptions; |
| 6 | use Ably\Models\Message; |
| 7 | use Ably\Models\PaginatedResult; |
| 8 | |
| 9 | /** |
| 10 | * Represents a channel |
| 11 | * @property-read Presence $presence Presence object for this channel |
| 12 | * @method publish(Message $message) |
| 13 | * @method publish(string $name, string $data) |
| 14 | */ |
| 15 | class Channel { |
| 16 | |
| 17 | private $name; |
| 18 | private $channelPath; |
| 19 | private $ably; |
| 20 | private $presence; |
| 21 | /** |
| 22 | * @var Ably\Models\ChannelOptions |
| 23 | */ |
| 24 | public $options; |
| 25 | |
| 26 | /** |
| 27 | * Constructor |
| 28 | * @param AblyRest $ably Ably API instance |
| 29 | * @param string $name Channel's name |
| 30 | * @param ChannelOptions|array|null $options Channel options (for encrypted channels) |
| 31 | * @throws AblyException |
| 32 | */ |
| 33 | public function __construct( AblyRest $ably, $name, $options = [] ) { |
| 34 | $this->ably = $ably; |
| 35 | $this->name = $name; |
| 36 | $this->channelPath = "/channels/" . urlencode( $name ); |
| 37 | $this->presence = new Presence( $ably, $this ); |
| 38 | |
| 39 | $this->setOptions( $options ); |
| 40 | } |
| 41 | |
| 42 | /** |
| 43 | * Magic getter for the $presence property |
| 44 | */ |
| 45 | public function __get( $name ) { |
| 46 | if ($name == 'presence') { |
| 47 | return $this->presence; |
| 48 | } |
| 49 | |
| 50 | throw new AblyException( 'Undefined property: '.__CLASS__.'::'.$name ); |
| 51 | } |
| 52 | |
| 53 | /** |
| 54 | * Posts a message to this channel |
| 55 | * @param mixed ... Either a Message, array of Message-s, or (string eventName, string data, [string clientId]) |
| 56 | * @throws \Ably\Exceptions\AblyException |
| 57 | */ |
| 58 | public function publish() { |
| 59 | |
| 60 | $args = func_get_args(); |
| 61 | $json = ''; |
| 62 | |
| 63 | if ( count($args) == 1 && is_a( $args[0], 'Ably\Models\Message' ) ) { // single Message |
| 64 | $msg = $args[0]; |
| 65 | |
| 66 | if ( $this->options->cipher ) { |
| 67 | $msg->setCipherParams( $this->options->cipher ); |
| 68 | } |
| 69 | |
| 70 | $json = $msg->toJSON(); |
| 71 | } else if ( count($args) == 1 && is_array( $args[0] ) ) { // array of Messages |
| 72 | $jsonArray = []; |
| 73 | |
| 74 | foreach ( $args[0] as $msg ) { |
| 75 | if ( $this->options->cipher ) { |
| 76 | $msg->setCipherParams( $this->options->cipher ); |
| 77 | } |
| 78 | |
| 79 | $jsonArray[] = $msg->toJSON(); |
| 80 | } |
| 81 | |
| 82 | $json = '[' . implode( ',', $jsonArray ) . ']'; |
| 83 | } else if ( count($args) >= 2 && count($args) <= 3 ) { // eventName, data[, clientId] |
| 84 | $msg = new Message(); |
| 85 | $msg->name = $args[0]; |
| 86 | $msg->data = $args[1]; |
| 87 | if ( count($args) == 3 ) $msg->clientId = $args[2]; |
| 88 | |
| 89 | if ( $this->options->cipher ) { |
| 90 | $msg->setCipherParams( $this->options->cipher ); |
| 91 | } |
| 92 | |
| 93 | $json = $msg->toJSON(); |
| 94 | } else { |
| 95 | throw new AblyException( 'Wrong parameters provided, use either Message, array of Messages, or name and data', 40003, 400 ); |
| 96 | } |
| 97 | |
| 98 | $authClientId = $this->ably->auth->clientId; |
| 99 | // if the message has a clientId set and we're using token based auth, the clientIds must match unless we're a wildcard client |
| 100 | if ( !empty( $msg->clientId ) && !$this->ably->auth->isUsingBasicAuth() && $authClientId != '*' && $msg->clientId != $authClientId) { |
| 101 | throw new AblyException( 'Message\'s clientId does not match the clientId of the authorisation token.', 40102, 401 ); |
| 102 | } |
| 103 | |
| 104 | $this->ably->post( $this->channelPath . '/messages', $headers = [], $json ); |
| 105 | return true; |
| 106 | } |
| 107 | |
| 108 | /** |
| 109 | * Retrieves channel's history of messages |
| 110 | * @param array $params Parameters to be sent with the request |
| 111 | * @return PaginatedResult |
| 112 | */ |
| 113 | public function history( $params = [] ) { |
| 114 | return new PaginatedResult( $this->ably, 'Ably\Models\Message', $this->getCipherParams(), 'GET', $this->getPath() . '/messages', $params ); |
| 115 | } |
| 116 | |
| 117 | /** |
| 118 | * @return string Channel's name |
| 119 | */ |
| 120 | public function getName() { |
| 121 | return $this->name; |
| 122 | } |
| 123 | |
| 124 | /** |
| 125 | * @return string Channel portion of the request URI |
| 126 | */ |
| 127 | public function getPath() { |
| 128 | return $this->channelPath; |
| 129 | } |
| 130 | |
| 131 | /** |
| 132 | * @return CipherParams|null Cipher params if the channel is encrypted |
| 133 | */ |
| 134 | public function getCipherParams() { |
| 135 | return $this->options->cipher; |
| 136 | } |
| 137 | |
| 138 | /** |
| 139 | * @return \Ably\Models\ChannelOptions |
| 140 | */ |
| 141 | public function getOptions() { |
| 142 | return $this->options; |
| 143 | } |
| 144 | |
| 145 | /** |
| 146 | * Sets channel options |
| 147 | * @param array|null $options channel options |
| 148 | * @throws AblyException |
| 149 | */ |
| 150 | public function setOptions( $options = [] ) { |
| 151 | $this->options = new ChannelOptions( $options ); |
| 152 | } |
| 153 | } |