<?php

class admin_login_model extends Model {
    
    
    public function logmein() {
        $data = $this->escapeArray($_REQUEST);
        if ($_REQUEST['email']!='' && $_REQUEST['pass']!='') {
            // Look the user up by identity only; the password is verified in PHP
            // so we can support hashed passwords (and legacy plaintext during migration).
            $result = $this->query("select * from azonics_admin_users where "
                    . "admin_status='1' and "
                    . "(admin_email='".$data['email']."' or admin_name='".$data['email']."');");

            if (sizeof($result)>0 && admin_utils::verifyPassword($_REQUEST['pass'], $result[0]->admin_pass)) {
                // Upgrade legacy plaintext passwords to a proper hash on first valid login.
                if (admin_utils::passwordNeedsRehash($result[0]->admin_pass)) {
                    $newHash = admin_utils::hashPassword($_REQUEST['pass']);
                    $this->execute("update azonics_admin_users set admin_pass='".$this->escapeString($newHash)."' where admin_id='".$result[0]->admin_id."';");
                    $result[0]->admin_pass = $newHash;
                }
                $this->execute("update azonics_admin_users set admin_last_ip='".$_SERVER['REMOTE_ADDR']."' where admin_id='".$result[0]->admin_id."';");
                $_SESSION['admin_user'] = $result[0];
                $_SESSION['access_level'] = $result[0]->admin_access_level;
                return true;
            }
            else {
                return false;
            }
        }
        else {
            return false;
        }
    }
    
    
    public function logmeout() {
        $this->query("update azonics_admin_users set admin_status='1' where admin_id='".$_SESSION['admin_user']->admin_id."';");
        $_SESSION['admin_user'] = null;
    }
    
    
    public function passwordReminder() {
        $data = $this->escapeArray($_REQUEST);
        $result = $this->query("select * from azonics_admin_users where admin_email='".$data['email']."' and admin_status='1';");
        if (sizeof($result)>0) {
            // Passwords are stored hashed and can no longer be recovered, so we
            // generate a new temporary password, store it hashed, and return the
            // plaintext value so the caller can e-mail it to the user.
            $tempPass = bin2hex(random_bytes(6));
            $hash = admin_utils::hashPassword($tempPass);
            $this->execute("update azonics_admin_users set admin_pass='".$this->escapeString($hash)."' where admin_id='".$result[0]->admin_id."';");
            $result[0]->admin_pass = $tempPass;
            return $result[0];
        }
        else {
            return false;
        }
    }
    
    
    public function reloadProfile() {
        $result = $this->query("select * from azonics_admin_users where "
                . "admin_id='".$_SESSION['admin_user']->admin_id."' and "
                . "admin_status='1';");

        if (sizeof($result)>0) {
            $_SESSION['admin_user'] = $result[0];
            return true;
        }
        else {
            return false;
        }
    }
    
    
}