Webservice: List issued certificates

Author: michallohnisky

classes/external.php

@@ -230,4 +230,130 @@ public static function delete_issue($certificateid, $issueid) {
     public static function delete_issue_returns() {
         return new external_value(PARAM_BOOL, 'True if successful, false otherwise');
     }
+
+	/**
+	 * Returns list_issues parameters.
+	 *
+	 * @return external_function_parameters
+	 */
+	public static function list_issues_parameters() {
+		return new external_function_parameters(
+			[
+				'timecreatedfrom' => new external_value(PARAM_INT, 'Timestamp. Returns items created after this date (included).', VALUE_OPTIONAL),
+			]
+		);
+	}
+
+	/**
+	 * Returns array of issued certificates.
+	 *
+	 * @param ?int $timecreatedfrom Timestamp. Returns items created after this date (included).
+	 * @return array
+	 */
+	public static function list_issues($timecreatedfrom = null) {
+		global $DB;
+
+		$params = [
+			'timecreatedfrom' => $timecreatedfrom,
+		];
+		self::validate_parameters(self::list_issues_parameters(), $params);
+
+
+		$output = [];
+
+		list($namefields, $nameparams) = \core_user\fields::get_sql_fullname();
+		$sql = "SELECT ci.*, $namefields as fullname, u.username, u.email, ct.id as templateid, ct.name as templatename, ct.contextid
+                  FROM {customcert_issues} ci
+                  JOIN {user} u
+                    ON ci.userid = u.id
+                  JOIN {customcert} c
+                    ON ci.customcertid = c.id
+                  JOIN {customcert_templates} ct
+                    ON c.templateid = ct.id";
+		if ($timecreatedfrom) {
+			$sql .= " WHERE ci.timecreated >= :timecreatedfrom";
+			$nameparams['timecreatedfrom'] = $timecreatedfrom;
+		}
+
+		if ($issues = $DB->get_records_sql($sql, $nameparams)) {
+
+			foreach ($issues as $issue) {
+
+				// Generate PDF
+
+				$template = new \stdClass();
+				$template->id = $issue->templateid;
+				$template->name = $issue->templatename;
+				$template->contextid = $issue->contextid;
+				$template = new \mod_customcert\template($template);
+
+				$ctname = str_replace(' ', '_', mb_strtolower($template->get_name()));
+				$pdfname = $ctname . '_' . 'certificate.pdf';
+				$filecontents = $template->generate_pdf(false, $issue->userid, true);
+
+
+				$output[] = [
+					'issue' => [
+						'id' => $issue->id,
+						'customcertid' => $issue->customcertid,
+						'code' => $issue->code,
+						'emailed' => $issue->emailed,
+						'timecreated' => $issue->timecreated,
+					],
+					'user' => [
+						'id' => $issue->userid,
+						'fullname' => $issue->fullname,
+						'username' => $issue->username,
+						'email' => $issue->email,
+					],
+					'template' => [
+						'id' => $issue->templateid,
+						'name' => $issue->templatename,
+						'contextid' => $issue->contextid,
+					],
+					'pdf' => [
+						'name' => $pdfname,
+						'content' => base64_encode($filecontents),
+					],
+				];
+			}
+
+		}
+
+		return $output;
+	}
+
+	/**
+	 * Returns the list_issues result value.
+	 *
+	 * @return external_multiple_structure
+	 */
+	public static function list_issues_returns() {
+		return new external_multiple_structure(
+			new external_single_structure([
+				'issue' => new external_single_structure([
+					'id' => new external_value(PARAM_INT, 'issue id'),
+					'customcertid' => new external_value(PARAM_INT, 'customcert id'),
+					'code' => new external_value(PARAM_TEXT, 'code'),
+					'emailed' => new external_value(PARAM_BOOL, 'emailed'),
+					'timecreated' => new external_value(PARAM_INT, 'time created'),
+				]),
+				'user' => new external_single_structure([
+					'id' => new external_value(PARAM_INT, 'id of user'),
+					'fullname' => new external_value(PARAM_TEXT, 'fullname'),
+					'username' => new external_value(PARAM_TEXT, 'username'),
+					'email' => new external_value(PARAM_TEXT, 'email'),
+				]),
+				'template' => new external_single_structure([
+					'id' => new external_value(PARAM_INT, 'template id'),
+					'name' => new external_value(PARAM_TEXT, 'template name'),
+					'contextid' => new external_value(PARAM_INT, 'context id'),
+				]),
+				'pdf' => new external_single_structure([
+					'name' => new external_value(PARAM_TEXT, 'name'),
+					'content' => new external_value(PARAM_TEXT, 'base64 content'),
+				]),
+			])
+		);
+	}
 }

db/services.php

@@ -50,4 +50,12 @@
         'type'        => 'read',
         'ajax'        => true,
     ],
+    'mod_customcert_list_issues' => [
+        'classname'   => 'mod_customcert\external',
+        'methodname'  => 'list_issues',
+        'classpath'   => '',
+        'description' => 'List issued certificates',
+        'type'        => 'read',
+        'ajax'        => true,
+    ],
 ];