<?php
ini_set('display_errors', 1);

require_once '../../../resources/base_path_include.php';

require_once $base_path_to_learning_resources  . "includes/connect.php"; // use require for mandatory files
require_once $base_path_to_learning_resources . 'lib/function.php';
require_once $base_path_to_learning_resources . 'lib/validate_api_signature.php';

//valdation file
require_once $base_path_to_learning_resources . 'lib/validate_function.php';
require_once $base_path_to_learning . 'user_management/authenticate.php';
require_once $base_path_to_learning . 'functions/common_functions.php';
//db access function
require_once $base_path_to_learning_resources . 'includes/specific_db_config.php';
//aws image store
require_once $base_path_to_learning_resources . 'lib/bucket_functions/bucket_functions.php';
require_once $base_path_to_learning . "vendor/autoload.php";

require_once $base_path_to_learning_resources . 'includes/aws_bucket_config.php';
require_once $base_path_to_learning . "faculty_api/faculty_function/common_faculty_function.php";
require_once $base_path_to_learning . "principal_api/principal_function/principal_function.php";
use Aws\S3\S3Client;
use Aws\S3\Exception\S3Exception;
$postdata = json_decode(file_get_contents("php://input"), true);
// print_r($postdata);
checkIfNoPhpContentsReceive();

if (
    !isset($postdata['api_signature']) or !checkIfIssetAndNotEmpty($postdata['api_signature']) or
    !isset($postdata['function_type']) or !checkIfIssetAndNotEmpty($postdata['function_type'])  or
    !isset($postdata['jwt_token']) or  !checkIfIssetAndNotEmpty($postdata['jwt_token'])
) {
    errorreturn("All * fields are required.");
}
validateApiSignature($postdata['api_signature']);

$jwttoken = $postdata['jwt_token'];
$jwt_validate = authenticate_jwt($jwttoken);
$userid = $jwt_validate->data->id;
$workspace_id = $jwt_validate->data->workspace_id;
$username = $jwt_validate->data->username;
$role = $jwt_validate->data->role;
$branch_id = $jwt_validate->data->branch_id;
$institution_id = $jwt_validate->data->institution_id;

$specific_db_name = validateUserAccess($conn_rjllearning, $userid, $role, $workspace_id,["teacher"], null);
if (!$specific_db_name) {
    errorreturn('Access denied.');
} else {
    $conn_rjllearning_specific = dynamicDbConnection($specific_db_name);
}

require_once $base_path_to_learning . 'user_management/user_versioning.php';

$version = isset($_POST['version']) ? $_POST['version'] : (isset($postdata['version']) ? $postdata['version'] : null);
$updated_time = isset($_POST['updated_time']) ? $_POST['updated_time'] : (isset($postdata['updated_time']) ? $postdata['updated_time'] : null);

$response = user_data_refresh($conn_rjllearning,$conn_rjllearning_specific, $version, $updated_time, $userid, $institution_id);

$function_type=$postdata['function_type'];
$Faculty_Codes = $conn_rjllearning_specific->prepare("SELECT id FROM faculty_info WHERE userid = ? AND institution_id = ? AND branch_id = ?");
$Faculty_Codes->execute(array($userid, $institution_id, $branch_id));
$result_faculty = $Faculty_Codes->fetch(PDO::FETCH_ASSOC);
if ($result_faculty === false) {
    errorreturn("Faculty Not Found.");
}

$faculty_id = $result_faculty['id'];
$teacher_data = getClassSectionSubjectsAndInChargeRoles($conn_rjllearning, $conn_rjllearning_specific, $institution_id, $userid);
$class_section_subjects  = $teacher_data['class_section_subjects'];
$class_incharge_roles = $teacher_data['class_incharge_roles'];
$staff_access_modules = $teacher_data['staff_access_modules'];
// var_dump($class_id);
checkFacultyModuleGranted($function_type, $class_section_subjects, $class_incharge_roles, $staff_access_modules, null, null, null, $conn_rjllearning);

function getStaffAccessSupport($conn_rjllearning_specific,$conn_rjllearning, $institution_id, $branch_id,$from_date,$to_date, $limit, $offset)
{

$sql = "SELECT count(*) as total_rows FROM staff_access_support WHERE institution_id = ?";
$array_params = [$institution_id];
if (!empty($from_date) && !empty($to_date)) {
    $sql .= " AND date_created BETWEEN ? AND ?";
    $array_params[] = $from_date;
    $array_params[] = $to_date;
}
$stmt = $conn_rjllearning_specific->prepare($sql);
$stmt->execute($array_params);
$result_total = $stmt->fetch(); 
$totalrows = $result_total['total_rows'];


    if ($limit == 'all') {
        $sql = "SELECT * FROM staff_access_support WHERE institution_id = ?";
        $array_params = [$institution_id];
         if ($branch_id == 'all') {
            $sql .= "";
        } else if ($branch_id !=  null  && $branch_id != 'all') {
            $sql .= " AND branch_id = ? ";
            $array_params[] = $branch_id;
        }


        
        // Add date range condition
        if ($from_date != null && $to_date != null) {
            $sql .= " AND date_created BETWEEN ? AND ?";
            $array_params[] = $from_date;
            $array_params[] = $to_date;
        }
        $sql .=  "order by date_created desc, time_created desc";

    } else {

        $sql = "SELECT * FROM staff_access_support WHERE institution_id = ?  ";
        $array_params = [$institution_id];
         if ($branch_id == 'all') {
            $sql .= "";
        } else if ($branch_id !=  null  && $branch_id != 'all') {
            $sql .= " AND branch_id = ? ";
            $array_params[] = $branch_id;
        }

        
        // Add date range condition
        if ($from_date != null && $to_date != null) {
            $sql .= " AND date_created BETWEEN ? AND ?";
            $array_params[] = $from_date;
            $array_params[] = $to_date;
        }
      $sql .= " order by date_created desc, time_created desc ";
      $sql .= "LIMIT " . $offset . " ," . $limit . "";
    
    }
    $stmt = $conn_rjllearning_specific->prepare($sql);
    $stmt->execute($array_params);
    $result = $stmt->fetchAll();


    
$array_return = [];

foreach ($result as $rows) {
    $faculty_id = $rows['faculty_id']; // The faculty_id from your data

    // Fetch faculty name
    $sql = "SELECT name FROM faculty_info WHERE id = ?";
    $stmt = $conn_rjllearning_specific->prepare($sql);
    $stmt->execute([$faculty_id]);
    $faculty_info = $stmt->fetch();
    $faculty_name = $faculty_info['name'] ?? 'N/A';

    // Fetch function names
    $function_code_json = $rows['function_code'];
    $function_details = [];
    if (!empty($function_code_json)) {
        $function_codes = json_decode($function_code_json, true);
        if (is_array($function_codes)) {
            // Create placeholders for the SQL IN clause
            $placeholders = rtrim(str_repeat('?,', count($function_codes)), ',');
            $sql = "SELECT id, function_label FROM function_codes WHERE id IN ($placeholders)";
            $stmt = $conn_rjllearning->prepare($sql);
            $stmt->execute($function_codes);
            $function_data = $stmt->fetchAll();
            foreach ($function_data as $function) {
                $function_details[] = [
                    'id' => $function['id'],
                    'function_label' => $function['function_label']
                ];
            }
        }
}
    // Process class_sections
    $class_sections_json = $rows['class_sections'];
    $class_sections = json_decode($class_sections_json, true);
    $formatted_sections = [];

  foreach ($class_sections as $section) {
    $class_id = trim($section['class_id']); // Trim class_id for safety
    $section_id = $section['section_id']; // This is an array of section IDs

    // Fetch class name
    if ($class_id === 'all') {
        $class_name = 'All Classes';
    } else {
        $class_info = getClass($conn_rjllearning_specific, $institution_id, $class_id);
        $class_name = $class_info['class_name'] ?? 'N/A';
    }

    // Fetch section names
    if ($section_id === 'all') {
        $section_names = 'All Sections';
    } else {
        // Initialize section names as an array
        $section_names = [];
        
        // Loop through each section ID in the array
        foreach ($section_id as $id) {
            // Ensure the ID is trimmed to remove any whitespace
            $section_info = getSection($conn_rjllearning_specific, $institution_id, trim($id));
            // Add section name or 'N/A' if not found
            $section_names[] = $section_info['section_name'] ?? 'N/A';
        }

        // Join the section names into a single string
        $section_names = implode(', ', $section_names);
    }

    // Add formatted section to the result array
    $formatted_sections[] = [
        'class' => $class_name,
        'section' => $section_names
    ];
}

    // Fetch branch info
    $branch_info = getBranchInfo($conn_rjllearning_specific, $institution_id, $rows['branch_id']);

    // Append to the return array
    $array_return[] = [
        'staff_support_id' => $rows['id'],
        'faculty_name' => $faculty_name,
        'function_names' => $function_details,
        'branch_id' => $branch_info,
        'class_sections' => $formatted_sections,
        'date_created' => $rows['date_created']
    ];
}

// Determine maxreach flag based on result count
$maxreach = (count($result) < $limit) ? 1 : 0;

return array(
    'total_rows' => $totalrows,
    'staff_access_support' => $array_return,
    'maxreach' => $maxreach
);

}

if ($postdata['function_type'] == "fetch_staff_access_support") {
   
    if (isset($postdata['class_id']) and !empty($postdata['class_id'])) {
        $class_id = trim($postdata['class_id']);
    } else {
        $class_id = null;
    }
    if (isset($postdata['section_id']) and !empty($postdata['section_id'])) {
        $section_id = trim($postdata['section_id']);
    } else {
        $section_id = null;
    }
    if (isset($postdata['search_string']) and !empty($postdata['search_string'])) {
        $search_string = trim($postdata['search_string']);
    } else {
        $search_string = null;
    }
    
    if (isset($postdata['from_date']) and !empty($postdata['from_date'])) {
        $from_date = trim($postdata['from_date']);
    } else {
        $from_date = null;
    }
    if (isset($postdata['to_date']) and !empty($postdata['to_date'])) {
        $to_date = trim($postdata['to_date']);
    } else {
        $to_date = null;
    }
    if ($from_date > $to_date) {
    errorreturn('Invalid Date format');
    }
    $limit = $postdata['limit'];

    $page = (isset($postdata['page']) and isNumeric($postdata['page'])) ? (int)$postdata['page'] : 1;
    $check_academic_confirmation = CheckAcademicSession($conn_rjllearning_specific, $institution_id);
    if ($check_academic_confirmation != true) {
        errorreturn("Access denied. Academic session not active.");
    }

    if ($limit != 'all') {
        $offset = ($page - 1) * $limit;
        $success['data'] = getStaffAccessSupport($conn_rjllearning_specific,$conn_rjllearning, $institution_id, $branch_id,  $from_date,$to_date,$limit, $offset);
        successreturn($success);
    } else {
        $success['data'] = getStaffAccessSupport($conn_rjllearning_specific,$conn_rjllearning, $institution_id, $branch_id, $from_date,$to_date, $limit, null);
        successreturn($success);
    }
}
