" . PHP_EOL . "" . PHP_EOL . " " . PHP_EOL . " " . PHP_EOL . " " . PHP_EOL . " " . PHP_EOL . " " . PHP_EOL . " " . $title . "" . PHP_EOL . " " . PHP_EOL . " " . PHP_EOL; $post = " " . PHP_EOL . "" . PHP_EOL; $html5 = $pre . $html_data . $post; return $html5; } /* * Writes HTML table with the following info: * Token + shortened pubkey | Name | Description | Users | View Links(?) | Join URL */ function get_table_html($info_arrays) { $table_lines = array(); foreach($info_arrays as $id => $content) { /* * $id is "room token+shortened_pubkey", e.g. "example+09af" * Each $content looks like this: * $info_array = array( * "name" => "Name of the room", * "language" => "🇩🇪", * "description" => "Some text that describes the community", * "active_users" => 1234, * "preview_link" => "https://example.com/r/example", * "join_link" => "https://example.com/example?public_key=[64_hex_chars]" * ); */ $exploded = explode("/", $content["join_link"]); // https: + "" + 1.2.3.4:56789 + token?public_key=0123456789abcdef $server_url = $exploded[0] . "//" . $exploded[2]; // extract server_url $token = explode("?", $exploded[3])[0]; // extract token $line = " " . PHP_EOL . " " . $id . "" . PHP_EOL . " " . $content["language"] . "" . PHP_EOL . " " . $content["name"] . "" . PHP_EOL . " " . $content["description"] . "" . PHP_EOL . " " . $content["active_users"] . "" . PHP_EOL . " " . $content["preview_link"] . "" . PHP_EOL . " $\"Pictogram$ " . PHP_EOL . " " . $content["join_link"] . "" . PHP_EOL . " " . PHP_EOL; $table_lines[] = $line; } // prefix $prefix = "

Session Communities

" . PHP_EOL . "" . PHP_EOL . " " . PHP_EOL . " " . PHP_EOL . " " . PHP_EOL . " " . PHP_EOL . " " . PHP_EOL . " " . PHP_EOL . " " . PHP_EOL . " " . PHP_EOL . " " . PHP_EOL . " " . PHP_EOL; // suffix $suffix = "

Identifier	L	Name	Description	Users	Preview	QR	Join URL

" . PHP_EOL . "" . PHP_EOL . " " . PHP_EOL . " " . PHP_EOL . " " . PHP_EOL . " " . PHP_EOL . " " . PHP_EOL . " " . PHP_EOL . "

" . count($table_lines) . " unique Session Communities on " . count_servers($info_arrays) . " servers have been found.

Last checked X minutes ago.

" . PHP_EOL; // concatenate html $html = $prefix; foreach($table_lines as $line) { $html = $html . $line; } $html = $html . $suffix; return $html; } /* * Needed until all Community servers reliably generate QR codes again */ function get_qr_img_element_from_join_url($join_url) { $data = get_base64_qr_code_from_join_url($join_url); $mime = "image/png"; $src = "data:" . $mime . ";base64," . $data; $result = "

"; // echo($result . PHP_EOL); return $result; } /* * Use Google API to generate QR codes and encode them as base64 */ function get_base64_qr_code_from_join_url($join_url) { // https://developers.google.com/chart/infographics/docs/qr_codes $data = urlencode($join_url); $size = "512x512"; $api_url = "https://chart.googleapis.com/chart?cht=qr" . "&chs=" . $size . "&chl=" . $data . "&chld=L|0"; // error correction level: L = 7%, M = 15%, Q = 25%, H = 30% | margin in number of rows $img_base64 = base64_encode(file_get_contents($api_url)); // echo($img_base64 . PHP_EOL); return $img_base64; } /* * TODO: Description */ function create_qr_code_modals_html($info_arrays) { $html = ""; foreach($info_arrays as $id => $content) { /* * $id is "room token+shortened_pubkey", e.g. "example+09af" * Each $content looks like this: * $info_array = array( * "name" => "Name of the room", * "language" => "🇩🇪", * "description" => "Some text that describes the community", * "active_users" => 1234, * "preview_link" => "https://example.com/r/example", * "join_link" => "https://example.com/example?public_key=[64_hex_chars]" * ); */ $img_elem = get_qr_img_element_from_join_url($content["join_link"]); // TODO: incorporate ID to use in js function $modal_html = "" . PHP_EOL; $html = $html . $modal_html; } return $html; } /* * Generate the HTML for the toast/snackbar when you copy a join link */ function get_copy_snackbar() { $snackbar_html = "

" . "Copied the URL to the clipboard. Paste into Session app to join." . "

"; return $snackbar_html; } /* * TODO: Description */ function generateHTML($timestamp, $info_arrays) { $title = "Self-updating list of active Session Communities"; $table_html = get_table_html($info_arrays); $modal_html = create_qr_code_modals_html($info_arrays); $snackbar_html = get_copy_snackbar(); $html = $table_html . PHP_EOL . $modal_html . PHP_EOL . $snackbar_html . PHP_EOL; $final_html = create_html_page_from_html_data($html, $title, $timestamp); return $final_html; } ?>