<?php

class Mailer
{
	private static function sendMail($email, $subject, $content, $from = "contact")
	{
		global $MAIL_DOMAIN, $URL_BASE, $YEAR;

		$content = preg_replace("#{URL_BASE}#", $URL_BASE, $content);
		$content = preg_replace("#{YEAR}#", $YEAR . "- " . ($YEAR + 1), $content);

		$headers = "From: \"Contact Corres2Math\" <" . $from . "@" . $MAIL_DOMAIN . ">\r\n";
		$headers .= "Reply-To: \"Contact corres2Math\" <contact@" . $MAIL_DOMAIN . ">\r\n";
		$headers .= "Content-Type: text/html; charset=UTF-8\r\n";

		ensure(mail($email, $subject, $content, $headers), "Un problème est survenu dans l'envoi d'un mail. Veuiller contacter votre administrateur.");
	}

	private static function broadcastToTeam(Team $team, $subject, $content, $from = "contact")
	{
		$content = preg_replace("#{TEAM_NAME}#", $team->getName(), $content);
		$content = preg_replace("#{TRIGRAM}#", $team->getTrigram(), $content);

		$encadrant = User::fromId($team->getEncadrantId());

		if ($encadrant != null) {
			$c = preg_replace("#{FIRST_NAME}#", $encadrant->getFirstName(), $content);
			$c = preg_replace("#{SURNAME}#", $encadrant->getSurname(), $c);
			self::sendMail($encadrant->getEmail(), $subject, $c, $from);
		}

		foreach ($team->getParticipants() as $participant_id) {
			$participant = User::fromId($participant_id);
			if ($participant == null)
				continue;

			$c = preg_replace("#{FIRST_NAME}#", $participant->getFirstName(), $content);
			$c = preg_replace("#{SURNAME}#", $participant->getSurname(), $c);
			self::sendMail($participant->getEmail(), $subject, $c, $from);
		}
	}

	private static function broadcastToAdmins($subject, $content, $from = "contact")
	{
		/** @var User $admin */
		foreach (User::getAdmins() as $admin) {
		    if (!$admin->doReceiveAnimathMails())
		        continue;

			$c = preg_replace("#{FIRST_NAME}#", $admin->getFirstName(), $content);
			$c = preg_replace("#{SURNAME}#", $admin->getSurname(), $c);
			self::sendMail($admin->getEmail(), $subject, $c, $from);
		}
	}

	private static function getTemplate($name)
	{
		global $LOCAL_PATH;
		return file_get_contents("$LOCAL_PATH/server_files/services/mail_templates/$name.html");
	}

	public static function sendRegisterMail(NewUser $new_user)
	{
		global $YEAR;

		$content = self::getTemplate("register");
		$content = preg_replace("#{FIRST_NAME}#", $new_user->first_name, $content);
		$content = preg_replace("#{SURNAME}#", $new_user->surname, $content);
		$content = preg_replace("#{TOKEN}#", $new_user->confirm_email_token, $content);

		self::sendMail($new_user->email, "Inscription aux Correspondances des Jeunes Mathématicien·ne·s $YEAR - " . ($YEAR + 1), $content);
	}

	public static function sendConfirmEmail(User $user)
	{
		global $YEAR;

		$content = self::getTemplate("confirm_email");
		$content = preg_replace("#{FIRST_NAME}#", $user->getFirstName(), $content);
		$content = preg_replace("#{SURNAME}#", $user->getSurname(), $content);
		$content = preg_replace("#{TOKEN}#", $user->getConfirmEmailToken(), $content);

		self::sendMail($user->getEmail(), "Confirmation d'adresse e-mail – Correspondances des Jeunes Mathématicien·ne·s $YEAR - " . ($YEAR + 1), $content);
	}

	public static function sendChangeEmailAddressMail(User $user)
	{
	    global $YEAR;

		$content = self::getTemplate("change_email_address");
		$content = preg_replace("#{FIRST_NAME}#", $user->getFirstName(), $content);
		$content = preg_replace("#{SURNAME}#", $user->getSurname(), $content);
		$content = preg_replace("#{TOKEN}#", $user->getConfirmEmailToken(), $content);

		self::sendMail($user->getEmail(), "Changement d'adresse e-mail – Correspondances des Jeunes Mathématicien·ne·s $YEAR - " . ($YEAR + 1), $content);
	}

	public static function sendForgottenPasswordProcedureMail(User $user)
	{
	    global $YEAR;

		$content = self::getTemplate("forgotten_password");
		$content = preg_replace("#{FIRST_NAME}#", $user->getFirstName(), $content);
		$content = preg_replace("#{SURNAME}#", $user->getSurname(), $content);
		$content = preg_replace("#{TOKEN}#", $user->getForgottenPasswordToken(), $content);

		self::sendMail($user->getEmail(), "Mot de passe oublié – Correspondances des Jeunes Mathématicien·ne·s $YEAR - " . ($YEAR + 1), $content);
	}

	public static function sendChangePasswordMail(User $user)
	{
	    global $YEAR;

		$content = self::getTemplate("change_password");
		$content = preg_replace("#{FIRST_NAME}#", $user->getFirstName(), $content);
		$content = preg_replace("#{SURNAME}#", $user->getSurname(), $content);

		self::sendMail($user->getEmail(), "Mot de passe changé – Correspondances des Jeunes Mathématicien·ne·s $YEAR - " . ($YEAR + 1), $content);
	}

	public static function sendAddAdminMail(NewAdmin $new_admin)
	{
		global $YEAR;

		$content = self::getTemplate("add_admin");
		$content = preg_replace("#{FIRST_NAME}#", $new_admin->first_name, $content);
		$content = preg_replace("#{SURNAME}#", $new_admin->surname, $content);
		$content = preg_replace("#{PASSWORD}#", $new_admin->password, $content);

		self::sendMail($new_admin->email, "Ajout d'un administrateur – Correspondances des Jeunes Mathématicien·ne·s $YEAR - " . ($YEAR + 1), $content);
	}

	public static function sendAddTeamMail(User $user, Team $team)
	{
		global $YEAR;

		$content = self::getTemplate("add_team");
		$content = preg_replace("#{FIRST_NAME}#", $user->getFirstName(), $content);
		$content = preg_replace("#{SURNAME}#", $user->getSurname(), $content);
		$content = preg_replace("#{TEAM_NAME}#", $team->getName(), $content);
		$content = preg_replace("#{TRIGRAM}#", $team->getTrigram(), $content);
        $content = preg_replace("#{ACCESS_CODE}#", $team->getAccessCode(), $content);
        if ($team->getProblem() > 0)
            $content = preg_replace("#{PROBLEM}#", "pour le problème" . $team->getProblem(), $content);
        else
            $content = preg_replace("#{PROBLEM}#", "", $content);

		self::sendMail($user->getEmail(), "Ajout d'une équipe – Correspondances des Jeunes Mathématicien·ne·s $YEAR - " . ($YEAR + 1), $content);
	}

	public static function sendJoinTeamMail(User $user, Team $team)
	{
		global $YEAR;

		$content = self::getTemplate("join_team");
		$content = preg_replace("#{FIRST_NAME}#", $user->getFirstName(), $content);
		$content = preg_replace("#{SURNAME}#", $user->getSurname(), $content);
		$content = preg_replace("#{TEAM_NAME}#", $team->getName(), $content);
		$content = preg_replace("#{TRIGRAM}#", $team->getTrigram(), $content);
		if ($team->getProblem() > 0)
            $content = preg_replace("#{PROBLEM}#", "pour le problème" . $team->getProblem(), $content);
		else
            $content = preg_replace("#{PROBLEM}#", "", $content);

		self::sendMail($user->getEmail(), "Équipe rejointe – Correspondances des Jeunes Mathématicien·ne·s $YEAR - " . ($YEAR + 1), $content);
	}

	public static function sendRequestValidationMail(Team $team)
	{
		global $YEAR;

		$content = self::getTemplate("request_validation");
		$content = preg_replace("#{TEAM_NAME}#", $team->getName(), $content);
		$content = preg_replace("#{TRIGRAM}#", $team->getTrigram(), $content);
		$content = preg_replace("#{PROBLEM}#", $team->getProblem(), $content);
		$content = preg_replace("#{ACCESS_CODE}#", $team->getAccessCode(), $content);

		self::broadcastToAdmins("Demande de validation – Correspondances des Jeunes Mathématicien·ne·s $YEAR - " . ($YEAR + 1), $content);
	}

    public static function sendValidateTeam($team, $message)
    {
        global $YEAR;

        $content = self::getTemplate("validate_team");
        if (strlen($message) > 0)
            $message = " L'équipe d'organisation vous transmet le message suivant :\n\n" . $message;
        $message = preg_replace("#\n#", "<br/>\n", $message);
        $content = preg_replace("#{MESSAGE}#", $message, $content);

        self::broadcastToTeam($team, "Équipe validée – Correspondances des Jeunes Mathématicien·ne·s $YEAR - " . ($YEAR + 1), $content);
    }

    public static function sendUnvalidateTeam($team, $message)
    {
        global $YEAR;

        $content = self::getTemplate("unvalidate_team");
        if (strlen($message) > 0)
            $message = " L'équipe d'organisation vous transmet le message suivant :\n\n" . $message;
        $message = preg_replace("#\n#", "<br/>\n", $message);
        $content = preg_replace("#{MESSAGE}#", $message, $content);

        self::broadcastToTeam($team, "Équipe non validée – Correspondances des Jeunes Mathématicien·ne·s $YEAR - " . ($YEAR + 1), $content);
    }

	public static function sendNewVideo(NewVideo $video, Team $team)
	{
		global $YEAR;

		$content = self::getTemplate("new_video");
		$content = preg_replace("#{TEAM_NAME}#", $team->getName(), $content);
		$content = preg_replace("#{TRIGRAM}#", $team->getTrigram(), $content);
		$content = preg_replace("#{PROBLEM}#", $team->getProblem(), $content);
		$content = preg_replace("#{VIDEO_LINK}#", $video->link, $content);
		self::broadcastToAdmins("Nouvelle vidéo – Correspondances des Jeunes Mathématicien·ne·s $YEAR - " . ($YEAR + 1), $content);
	}

	public static function sendNewAnswer(NewAnswer $video, Team $team)
	{
		global $YEAR;

		$content = self::getTemplate("new_answer");
		$content = preg_replace("#{TEAM_NAME}#", $team->getName(), $content);
		$content = preg_replace("#{TRIGRAM}#", $team->getTrigram(), $content);
		$dest = Team::fromId($team->getVideoTeamIds()[$video->team - 1]);
		$content = preg_replace("#{DEST_TEAM_NAME}#", $dest->getName(), $content);
		$content = preg_replace("#{DEST_TRIGRAM}#", $dest->getTrigram(), $content);
		$content = preg_replace("#{PROBLEM}#", $team->getProblem(), $content);
		$content = preg_replace("#{VIDEO_LINK}#", $video->link, $content);

		self::broadcastToAdmins("Nouvelle vidéo de réponse – Correspondances des Jeunes Mathématicien·ne·s $YEAR - " . ($YEAR + 1), $content);
	}

	public static function validateVideo(Video $video, $message)
	{
		global $YEAR;

		$team = Team::fromId($video->getTeam());

		$template = "video_";
		$template .= $video->getValidation() == Video::ACCEPTED ? "accepted" : "rejected";
		$template .= $video->getReason() == Reason::SOLUTION ? "_solution" : "_answer";
		$content = self::getTemplate($template);
		$content = preg_replace("#{TRIGRAM}#", $team->getTrigram(), $content);
		$content = preg_replace("#{PROBLEM}#", $team->getProblem(), $content);
		$content = preg_replace("#{VIDEO_LINK}#", $video->getLink(), $content);
        if (strlen($message) > 0)
            $message = " L'équipe d'organisation vous transmet le message suivant :\n\n" . $message . "\n\n";
        $message = preg_replace("#\n#", "<br/>\n", $message);
        $content = preg_replace("#{MESSAGE}#", $message, $content);

		self::broadcastToTeam($team, ($video->getValidation() == Video::REJECTED ? "Vidéo refusée " : "Vidéo acceptée ")
            . $team->getTrigram() . " – Correspondances des Jeunes Mathématicien·ne·s $YEAR - " . ($YEAR + 1), $content);
	}
}