<?php

require_once("../inc/util.inc");
require_once("../project/project.inc");

$config = get_config();
$master_url = parse_config($config, "<master_url>");

// Determine if phpmailer is installed and to be used (defined in project.inc)
if (isset($USE_PHPMAILER)) {
    if ($USE_PHPMAILER) {
        require_once("../inc/phpmailer/class.phpmailer.php");
    }
} else {
    $USE_PHPMAILER = false;
}

/**
 * Function sends an email, either using PHPMailer or not.
 **/
function send_email($user, $subject, $body) {
    global $USE_PHPMAILER;
    global $PHPMAILER_HOST;
    global $PHPMAILER_MAILER;

    if ($USE_PHPMAILER) {
        $mail = new PHPMailer();
        $mail->AddAddress($user->email_addr, $user->name);
        $mail->Subject = $subject;
        $mail->Body = $body;
        $mail->From = EMAIL_FROM;
        $mail->FromName = EMAIL_FROM;
        $mail->Host = $PHPMAILER_HOST;
        $mail->Mailer = $PHPMAILER_MAILER;
        return $mail->Send();
    } else {
        if (defined('EMAIL_FROM')) {
            $headers = "From: ". EMAIL_FROM;
        } else {
            $headers ="";
        }
        return mail($user->email_addr, $subject, $body, $headers);
    }
}

/**
 * Send mail using the new User object style
 **/
function re_send_email($user, $subject, $body) {
    global $USE_PHPMAILER;
    global $PHPMAILER_HOST;
    global $PHPMAILER_MAILER;

    if ($USE_PHPMAILER) {
        $mail = new PHPMailer();
        $mail->AddAddress($user->getEmail(), $user->getName());
        $mail->Subject = $subject;
        $mail->Body = $body;
        $mail->From = EMAIL_FROM;
        $mail->FromName = EMAIL_FROM;
        $mail->Host = $PHPMAILER_HOST;
        $mail->Mailer = $PHPMAILER_MAILER;
        return $mail->Send();
    } else {
        if (defined('EMAIL_FROM')) {
            $headers = "From: ". EMAIL_FROM;
        } else {
            $headers ="";
        }
        return mail($user->getEmail(), $subject, $body, $headers);
    }
}


function send_verify_email($old, $new, $user) {
    $x = md5($new.$user->authenticator);
    mail(
        $new,
        PROJECT." account email change",
"The email address of your " . PROJECT . " account has been changed from $old to $new.
To validate the new address, visit the URL:
".URL_BASE."validate_email.php?u=$user->id&x=$x
"
    );
}

/**
 * Send a link to a user that makes it possible for the user to validate the email address
 * This function uses the new User object style
 **/
function send_verifier($user) {
    $x = md5($user->getEmail().$user->getAuthenticator());
    re_send_email(
        $user,
        PROJECT." email verification",
"You have requested to validate the email address you have registered with " . PROJECT . 
".
To validate the address, please visit the URL:
".URL_BASE."validate_email.php?u=".$user->getID()."&x=$x
"
    );
}


/**
 * Send an email describing an account to the user.
 * There are a few scenarios:
 *
 * 1) the account was created by user via web.
 *    In this case they're currently looking at the "validate account" page
 *    (account_created.php), although they might have strayed
 *    so we need to give them a link.
 * 2) the account was created administratively
 * 3) the user requested account key for existing account
 **/
function send_auth_email($user, $is_new) {
    global $master_url;
    $body = "";

    if ($is_new) {
        $subject = PROJECT." account confirmation for $user->name";
        $body = "Welcome to ".PROJECT.".

This email confirms your account with ".PROJECT.":
    Project URL:         $master_url
    Account Key:         $user->authenticator

    User name:           $user->name
    E-mail:              $user->email_addr
";
    } else {
        $subject = PROJECT." information for $user->name";
        $body = "Your ".PROJECT." account information is:
    Project URL:         $master_url
    Account Key:         $user->authenticator

    User name:           $user->name
    E-mail:              $user->email_addr
";
    }

$body .= "

For further information and assistance with ".PROJECT." go to $master_url
";
    return send_email($user, $subject, $body);
}

/**
 * Function simply outputs some text letting the user know
 * their authenticator was emailed to them.
 **/
function email_sent_message($email_addr) {
    if (defined('EMAIL_FROM')) {
        $email_from = EMAIL_FROM;
    } else {
        $email_from = URL_BASE;
    }

    echo "
        Your Account Key has been emailed to $email_addr.
        <p>
        If the email doesn't arrive in a few minutes,
        your ISP may be blocking it as spam.
        In this case please contact your ISP and
        ask them to not block email from $email_from.
    ";
}

/** a valid email address is of the form A@B.C
 * where A, B, C are nonempty,
 * A and B don't contain @ or .,
 * and C doesn't contain @ (but can contain .)
 **/
 // TODO: Replace this with some regex.  Please.
function is_valid_email_addr($addr) {
    $x = strstr($addr, "@");
    if (!$x) return false;
    if (strlen($x) == strlen($addr)) return false;
    $x = substr($x, 1);
    if (strstr($x, "@")) return false;
    $y = strstr($x, ".");
    if (!$y) return false;
    if (strlen($y) == strlen($x)) return false;
    if (strlen($y) == 1) return false;
    return true;
}


/**
 * If a post is hidden, this function emails the author
 * to let them know what happened.
 **/
function send_moderation_email($post, $message) {
    global $master_url;
    $body = "";
    $thread = $post->getThread();
    $subject = PROJECT." forum moderation notice for $user->name";
    $body = PROJECT." notification:

This email is sent to inform you that one of your posts in the forum has been affected by moderation in ".PROJECT.":
    Thread:         ".$thread->getTitle()."
    Link:           ".$master_url."/forum_thread.php?id=".$thread->getID()."

The moderator gave this explanation to why your post was moderated:
".$message;
$body .= "

This was the contents of your post:
".$post->getContent()."

For further information and assistance with ".PROJECT." go to ".$master_url;
    return send_email($post->getOwner(), $subject, $body);

}

/**
 * If an entire thread is hidden, this function emails the owner
 * to let them know what happened.
 */
function send_thread_moderation_email($thread, $message) {
    global $master_url;
    $user = $thread->getOwner();
    $body = "";

    $subject = PROJECT." forum moderation notice for $user->name";
    $body = PROJECT." notification:

This email is sent to inform you that one of your threads in the forum has been affected by moderation in ".PROJECT.":
    Thread:         ".$thread->getTitle()."
    Link:           ".$master_url."/forum_thread.php?id=".$thread->getID()."

The moderator gave this explanation to why your thread was moderated:
".$message;
$body .= "

For further information and assistance with ".PROJECT." go to ".$master_url;
    return send_email($user, $subject, $body);

}

/**
 * If a user is subscribed to a thread that is replied to, this
 * function sends them an email notifying them of the reply.
 **/
function send_reply_notification_email($thread, $user){
    $title = PROJECT . ": A user has posted to '". stripslashes($thread->getTitle()) ."'";
    $link = URL_BASE . "forum_thread.php?id=" . $thread->getID();
    $body = "Another " . PROJECT . " user has posted to the thread \"" . stripslashes($thread->getTitle()) . "\".\n"
           ."To view the updated thread, visit the following URL:\n\n$link";
    return re_send_email($user, $title, $body);
}

/**
 * If a user's host is identified as causing problems, this email is sent
 * to the owner to let them know.
 **/
function send_problem_email($user, $host) {
    global $master_url;
    $body = "";
        
    $host_content = "ID: ".$host->id."
    Created: ".time_str($host->create_time)."
    Venue: ".$host->venue."
    Total credit: ".$host->total_credit."
    Average credit: ".$host->expavg_credit."
    Average update time: ".time_str($host->expavg_time)."
    IP address: $host->last_ip_addr (same the last $host->nsame_ip_addr times)
    Domain name: " . $host->domain_name;
    $x = $host->timezone/3600;
    if ($x >= 0) $x="+$x";
    $host_content.="
    Local Time = UTC $x hours
    Number of CPUs: " . $host->p_ncpus."
    CPU: $host->p_vendor $host->p_model
    FP ops/sec: ".$host->p_fpops."
    Int ops/sec: ".$host->p_iops."
    memory bandwidth: ".$host->p_membw."
    Operating System: $host->os_name $host->os_version";
    $x = $host->m_nbytes/(1024*1024);
    $y = round($x, 2);
    $host_content.="
    Memory: $y MB";
    $x = $host->m_cache/1024;
    $y = round($x, 2);
    $host_content.="
    Cache: $y KB";
    $x = $host->m_swap/(1024*1024);
    $y = round($x, 2);
    $host_content.="
    Swap Space: $y MB";
    $x = $host->d_total/(1024*1024*1024);
    $y = round($x, 2);
    $host_content.="
    Total Disk Space: $y GB";
    $x = $host->d_free/(1024*1024*1024);
    $y = round($x, 2);
    $host_content.="
    Free Disk Space: $y GB
    Avg network bandwidth (upstream): $host->n_bwup bytes/sec
    Avg network bandwidth (downstream): $host->n_bwdown bytes/sec";
    $x = $host->avg_turnaround/86400;
    $host_content.="
    Average turnaround: ".round($x, 2)." days
    Number of RPCs: $host->rpc_seqno
    Last RPC: ".time_str($host->rpc_time)."
    % of time client on: ". 100*$host->on_frac." %
    % of time host connected: " . 100*$host->connected_frac." %
    % of time user active: " . 100*$host->active_frac." %
    # of results today: " . $host->nresults_today;
    
    $subject = PROJECT." notice for $user->name";
    $body = PROJECT." notification:

Dear $user->name
Your machine (host # $host->id) described below appears to have a misconfigured BOINC
installation.  Could you please have a look at it?

Sincerely,
        The ". PROJECT." team
";
$body .= "

This is the content of our database:
" . $host_content."

For further information and assistance with ".PROJECT." go to $master_url";
    echo nl2br($body) . "<br><br>"; 
    return send_email($user, $subject, $body);

}

/**
 * When a user clicks the red "x" to notify moderators about a post,
 * this function generates the email to let the moderators know about
 * it.
 **/
function send_report_post_email($user, $thread,  $post, $message) {
    global $master_url;
    global $forum_post_reporting_admin;
    
    $body = "";

    $subject = PROJECT." post in '".$thread->getTitle()."' reported as offensive";
    $body = PROJECT." notification:

This email is sent to inform you that one of the posts in the forum was reported as offensive in ".PROJECT.":
    Thread:         ".$thread->getTitle()."
    Post:           ".$post->getID()."
    Link:           $master_url/forum_thread.php?id=".$thread->getID()."#".$post->getID()."
    
The reporting user gave this explanation to why the post was reported:
".$message."

This was the contents of the post:
".$post->getContent()."

For further information and assistance with ".PROJECT." go to $master_url";
    //Security check, do we have an admin?
    if (!$forum_post_reporting_admin) error_page("This project has not yet defined an administrator to handle this kind of forum reports. Please contact the project and tell them to add this information in their html/project/project.inc file");
    return send_email($forum_post_reporting_admin, $subject, $body);
}


?>