<?php

class access
{
    public static function check(string $_element)
    {
        // Eléments autorisé sans authentification
        if (self::checkAccessWhite($_element)) {
            return TRUE;
        } else {
            if (session::isConnect("salarie") and session::isEspaceSalaries()) { // Espaces spécifiques aux Salariés
                return TRUE;
            } elseif (session::isConnect() and session::getType() == 2 and session::isEspaceControleurs()) { // Espaces spécifiques aux Contrôleurs
                return TRUE;
            } else {
                return self::ifAccesss($_element);
            }
        }
    }

    public static function checkAccessOffLine(string $_string)
    {
        return in_array($_string, OFF_LINE);
    }

    public static function checkAccessWhite(string $_string)
    {
        return in_array($_string, WHITE_ACCESS);
    }

    public static function getAccessList(?int $_idType = NULL)
    {
        ($_idType == NULL) ? $idType = session::getType() : $idType = $_idType;
        $return["access"] = $return["noAccess"] = $return["exception"] = array();

        db::query("SELECT "
            . "" . DB_T_ACCESS . ".id, "
            . "" . DB_T_ACCESS . ".access, "
            . "" . DB_T_ACCESS . ".noAccess, "
            . "" . DB_T_ACCESS_EXCEPTION . ".exception "
            . "FROM " . DB_T_TYPE_ACCESS . " "
            . "INNER JOIN " . DB_T_ACCESS . " ON " . DB_T_TYPE_ACCESS . ".id_access = " . DB_T_ACCESS . ".id "
            . "LEFT JOIN " . DB_T_ACCESS_EXCEPTION . " ON " . DB_T_TYPE_ACCESS . ".id_exception = " . DB_T_ACCESS_EXCEPTION . ".id "
            . "WHERE " . DB_T_TYPE_ACCESS . ".id_type = :id_type ");
        db::bind(':id_type', $idType);

        try {
            $tmp = db::resultset();
            foreach ($tmp as $access) {
                $return["access"] = self::addInArray($access["access"], $return["access"]);
                $return["noAccess"] = self::addInArray($access["noAccess"], $return["noAccess"]);
                if(isset($access["exception"])) { $return["exception"] = self::addInArray($access["exception"], $return["exception"]); }
            }

            // Je supprime les restriction d'accès en fonction des accès accordés
            $return["noAccess"] = array_diff($return["noAccess"], $return["access"]);
            
            return $return;
        } catch (Exception $e) {
            return FALSE;
        }
    }

    public static function getTypesUsers(bool $_expect = FALSE)
    {
        $except = ($_expect == FALSE) ? NULL : " WHERE " . DB_T_TYPE_USER . ".id != 2"; // Sauf les contrôleurs

        db::query("SELECT * FROM " . DB_T_TYPE_USER . $except);
        try {
            $tmp = db::resultset();
            return $tmp;
        } catch (Exception $e) {
            return FALSE;
        }
    }

    public static function ifLimitAccessException(string $_exception)
    {
        $accessList = self::getAccessList(session::getType());
        return in_array($_exception, $accessList["exception"]) ? TRUE : FALSE;
    }

    public static function ifAccesss(string $_accessAsk, ?int $_idType = NULL)
    {
        if (session::isConnect() == FALSE and self::checkAccessOffLine($_accessAsk)) {
            return TRUE;
        }

        // Si Admin OK
        $idType = $_idType == NULL ? session::getType() : $_idType;
        if ($idType == 1) {
            return TRUE;
        } 
        // Si Admin OK

        $accessList = self::getAccessList($idType);

        $cheminGenrique = self::checkGenericAccess($_accessAsk, $accessList["access"]);
        if ($cheminGenrique != FALSE AND !in_array($_accessAsk, $accessList["noAccess"])) { // Si Accès générique
            return TRUE;
        } elseif (in_array($_accessAsk, $accessList["access"]) or self::checkAccessWhite($_accessAsk)) {
            return TRUE;
        } else {
            return FALSE;
        }
    }

    private static function checkGenericAccess(string $_string, array $_access_list)
    {
        $string = explode("-", $_string)[0];
        $check = in_array($string."*", $_access_list);
        return ($check == TRUE) ? $string : FALSE;
    }

    private static function splitAccess(string $_string)
    {
        $return = array();
        $tmp = array_filter(explode("\n", $_string));
        foreach ($tmp as $key => $value) {
            $return[$key] = trim($value);
        }
        return $return;
    }

    private static function addInArray(string $_string, array $_array)
    {
        return array_unique(array_merge(self::splitAccess($_string), $_array));
    }

    public static function getListTypeUser(?array $_idExceptions = NULL )
    {
        $return = array();
        db::query("SELECT id, type FROM " . DB_T_TYPE_USER);
        try {
            $return = [];
            foreach (db::resultset() as $value) {
                if(is_null($_idExceptions) OR (!is_null($_idExceptions) AND !in_array($value["id"], $_idExceptions)) ){
                    $return[$value["id"]] = $value["type"];
                } 
            }
            return $return;
        } catch (Exception $e) {
            return FALSE;
        }
    }

    public static function printRenderAccessRow(array $valueAccess){
        if (!is_null($valueAccess["exception"])) { 
            $tooltip = '<span class="ms-2" data-bs-toggle="tooltip" title="Possibilité d\'accès partiel avec les éléments cachés suivants : ' . htmlspecialchars($valueAccess["exception"]) . '"><i class="bi bi-info-circle-fill" style="color:#ffc107;"></i></span>';
        } else {
            $tooltip = '';
        }

        echo '<tr>';
        echo '<td style="vertical-align: middle; box-sizing: border-box;">' . $valueAccess["label"] . $tooltip . '</td>';
        
        $tmp = [];

        foreach ($valueAccess["access"] as $keyRole => $valueRole) { 
            $tmp[$keyRole] = '<td style="width: 180px;"><div style="text-align:center;">';
            $tmp[$keyRole] .= self::getSelectAccess($valueAccess["access"][$keyRole], $valueAccess["exception"]);
            $tmp[$keyRole] .= '</div></td>';
        }

        echo $tmp[1]; // Administrateur
        echo $tmp[4]; // Modérateur du CMS
        echo $tmp[5]; // Bureau du CSE
        echo $tmp[6]; // Elu du CSE
        echo $tmp[7]; // Comptable
        echo $tmp[3]; // Assistance sociale

        echo '</tr>';
    }

    private static function getSelectAccess(?array $_access = NULL, ?string $_exception = NULL){
        if (!is_null($_exception)) {
            $options = [
                1 => 'Autorisé',
                0 => '-',
                2 => 'Partiellement'
            ];
            
        } else {
            $options = [
                1 => 'Autorisé',
                0 => '-',
            ];
        }

        $bgColors = [
            1 => 'background-color:#d4edda;',
            0 => 'background-color:#f8d7da;',
            2 => 'background-color:#ffeeba;'
        ];

        $disabled = ($_access["id_type"] == 1 OR $_access["id_access"] == 3) ? ' disabled' : '';
        $disabledStyle = ($_access["id_type"] == 1 OR $_access["id_access"] == 3) ? ' opacity: 0.5; cursor: not-allowed;' : '';
        $style = isset($bgColors[$_access["access"]]) ? $bgColors[$_access["access"]] : '';

        $return = '<select class="form-select form-select-sm" name="access-' . str_replace("#", "-", $_access["id_type_access"]) . '" style="' . $style . $disabledStyle . '"' . $disabled . '>';
        foreach ($options as $value => $label) {
            $selected = ($_access["access"] === $value) ? ' selected' : '';
            $return .=  '<option value="' . $value . '"' . $selected . '>' . $label . '</option>';
        }
        $return .= '</select>';

        return $return;
    }

    private static function completeIdemAccess(?array $_access = NULL, string $_idAccess){
        $roles = self::getListTypeUser([2]); // Tous les types sauf les contrôleurs
        foreach ($roles as $keyRole => $valueRole) {
            if(empty($_access["access"][$keyRole])){
                $tmp = [];
                $tmp["id_type_access"] = $keyRole . "#" . $_access["id_access"];
                $tmp["id_type"] = $keyRole;
                $tmp["id_access"] = $_idAccess;
                $tmp["type"] = $valueRole;
                $tmp["access"] = ($keyRole == 1) ? 1 : 0;
                $return[$keyRole] = $tmp;
            } else {
                $return[$keyRole] = $_access["access"][$keyRole];
            }
        }
        return $return;
    }

    public static function finalCompletAccess(){
        $access = access::getTypesAccessRecording();
        $return = [];
        foreach ($access as $keyAccess => $valueAccess) {
            $completeAccess = access::completeIdemAccess($valueAccess, $valueAccess["id_access"]);
            unset($valueAccess["access"]);
            $valueAccess["access"] = $completeAccess;
            $return[] = $valueAccess;
        }
        return $return;
    }

    private static function getTypesAccess(){
        db::query("SELECT "
            . DB_T_ACCESS . ".id, "
            . DB_T_ACCESS . ".label, "
            . DB_T_ACCESS . ".show, "
            . DB_T_ACCESS . ".add, "
            . DB_T_TYPE_ACCESS . ".id AS id_type_access, "
            . DB_T_TYPE_ACCESS . ".id_type, "
            . "exception1.exception AS exception_type, "
            . "exception2.exception AS exception, "
            . DB_T_TYPE_USER . ".type "
            . "FROM " . DB_T_ACCESS . " "
            . "LEFT JOIN " . DB_T_ACCESS_EXCEPTION . " AS exception1 ON exception1.id_access = " . DB_T_ACCESS . ".id "
            . "LEFT JOIN " . DB_T_TYPE_ACCESS . " ON " . DB_T_TYPE_ACCESS . ".id_access = " . DB_T_ACCESS . ".id "
            . "LEFT JOIN " . DB_T_TYPE_USER . " ON " . DB_T_TYPE_ACCESS . ".id_type = " . DB_T_TYPE_USER . ".id "
            . "LEFT JOIN " . DB_T_ACCESS_EXCEPTION . " AS exception2 ON " . DB_T_TYPE_ACCESS . ".id_exception = exception2.id "
            . "ORDER BY " . DB_T_ACCESS . ".id");
        try {
            $tmp = db::resultset();
            return $tmp;
        } catch (Exception $e) {
            return FALSE;
        }
    }

    private static function getTitleLabel(array $_array){
        if ($_array["show"] == 1 AND $_array["add"] == 0) {
            return "Accès à <strong>" . $_array["label"] . "</strong> en lecture";
        } elseif ($_array["show"] == 0 AND $_array["add"] == 1) {
            return "Accès à <strong>" . $_array["label"] . "</strong> en écriture";
        } else {
            return "Accès à <strong>" . $_array["label"] . "</strong> en lecture et écriture";
        }
    }

    public static function getTypesAccessRecording(){
        $return = [];
        foreach (self::getTypesAccess() as $valueAccess) {
            $return[$valueAccess["id"]]["id_access"] = $valueAccess["id"];
            $return[$valueAccess["id"]]["label"] = self::getTitleLabel($valueAccess);
            $return[$valueAccess["id"]]["show"] = $valueAccess["show"];
            $return[$valueAccess["id"]]["add"] = $valueAccess["add"];
            $return[$valueAccess["id"]]["exception"] = $valueAccess["exception_type"];
            
            if(!empty($valueAccess["id_type_access"])) {
                $return[$valueAccess["id"]]["access"][$valueAccess["id_type"]] = [
                    "id_type_access" => $valueAccess["id_type_access"],
                    "id_type" => $valueAccess["id_type"],
                    "id_access" => $valueAccess["id"],
                    "type" => $valueAccess["type"],
                    "access" => (empty($valueAccess["exception"])) ? 1 : 2,
                ];
            }
        }
        return $return;
    }

    public static function getAccessByRole(){
        $getAccessByRole = self::getTypesAccessRecording();
        $allTypeRole = self::getTypesUsers();
        $return = [];
        foreach ($getAccessByRole as $valuesGetAccessByRole) {
            $tmp = [];
            $tmp["access"] = $valuesGetAccessByRole["label"];
            $tmp["exception"] = $valuesGetAccessByRole["exception"];
            foreach ($allTypeRole  as $valueAllTypeRole) {
                if(!empty($valuesGetAccessByRole["access"][$valueAllTypeRole["id"]])){
                    $tmp[$valuesGetAccessByRole["access"][$valueAllTypeRole["id"]]["type"]] = $valuesGetAccessByRole["access"][$valueAllTypeRole["id"]]["access"];
                } elseif($valueAllTypeRole["id"] == 1){
                    $tmp[$valueAllTypeRole["type"]] = 1;
                } else {
                    $tmp[$valueAllTypeRole["type"]] = 0;
                }
            }
            $return[] = $tmp;
        }
        return $return;
    }

    private static function getIdException(int $_idAccess){
        db::query("SELECT "
            . DB_T_ACCESS_EXCEPTION . ".id, "
            . DB_T_ACCESS_EXCEPTION . ".exception "
            . "FROM " . DB_T_ACCESS_EXCEPTION . " "
            . "WHERE " . DB_T_ACCESS_EXCEPTION . ".id_access = :id_access");
        db::bind(':id_access', $_idAccess);
        try {
            $tmp = db::single();
            return $tmp;
        } catch (Exception $e) {
            return FALSE;
        }
    }

    public static function recordAccess(){
        $post = core::getPost();
        $data = [];
        foreach ($post as $keyPost => $valuePost) {
            if($valuePost == 1 OR $valuePost == 2){
                $tmp = explode("-", $keyPost);
                $data[$tmp[1] . "#" . $tmp[2]]["id_access"] = $tmp[2];
                $data[$tmp[1] . "#" . $tmp[2]]["id_type"] = $tmp[1];
                if($valuePost == 2){ 
                    $data[$tmp[1] . "#" . $tmp[2]]["id_exception"] = self::getIdException($tmp[2])["id"];
                } else {
                    $data[$tmp[1] . "#" . $tmp[2]]["id_exception"] = NULL;
                }
            }
        }

        // Vide la table
        db::query("TRUNCATE TABLE " . DB_T_TYPE_ACCESS);
        db::execute();

        // Reconstruit la table
        foreach ($data as $keyData => $valueData) {
            db::query("INSERT INTO " . DB_T_TYPE_ACCESS . " (id, id_type, id_access, id_exception) VALUES (:id, :id_type, :id_access, :id_exception)");
            db::bind(':id', $keyData);
            db::bind(':id_type', $valueData["id_type"]);
            db::bind(':id_access', $valueData["id_access"]);
            db::bind(':id_exception', $valueData["id_exception"]);
            try {
                db::execute();
            } catch (Exception $ex) {
                alert::recError("Erreur à l'enregistrement des droits");
                if(debug::isFile("debug")) { alert::recError("Stack : " . $ex); }
                return FALSE;
            }
        }

        return TRUE;

    }

}