FM / Manager

/home/techb158/workloadmatch.com/Manager/

/home/techb158/workloadmatch.com/Manager

Name	Size	Mode	Actions
core/	-	0755	rm
css/	-	0755	rm
data/	-	0755	rm
fonts/	-	0755	rm
Inc/	-	0755	rm
js/	-	0755	rm
php/	-	0755	rm
addcourse.php	18003	0644	edit dl rm
addcoursesession.php	14424	0644	edit dl rm
addcoursesession_bak.php.disabled	20860	0644	edit dl rm
addcoursetime.php	17564	0644	edit dl rm
addgroup.php	23465	0644	edit dl rm
addgroup1.php	20463	0644	edit dl rm
addholiday.php	18283	0644	edit dl rm
addmanager.php	19060	0644	edit dl rm
addremediation.php	18140	0644	edit dl rm
addretake.php	22284	0644	edit dl rm
adduser.php	30485	0644	edit dl rm
adduser1.php	23166	0644	edit dl rm
Add_Course_Session.php	6931	0644	edit dl rm
Add_Course_Session_bak.php.disabled	6931	0644	edit dl rm
add_event.php	2004	0644	edit dl rm
Add_Teacher_Unavailability.php	1724	0644	edit dl rm
AI_Generate_Schedule.php	11031	0644	edit dl rm
ai_schedule.php	19975	0644	edit dl rm
ajax_fetch_schedule.php	3856	0644	edit dl rm
ajax_get_group_slots.php	897	0644	edit dl rm
ajax_replace_saturday.php	31674	0644	edit dl rm
ajax_replace_saturday_backup_latest.php	31474	0644	edit dl rm
ajax_replace_saturday_bak.php.disabled	31812	0644	edit dl rm
ajax_swap_courses.php	4394	0644	edit dl rm
approve_teacher_absence.php	2230	0644	edit dl rm
approve_teacher_unavailability.php	2274	0644	edit dl rm
assign_course_group.php	18115	0644	edit dl rm
assign_course_group1.php	20752	0644	edit dl rm
Assign_Course_Report.php	2318	0644	edit dl rm
assign_teacher_legacy.php	16490	0644	edit dl rm
assign_teacher_manual.php	17551	0644	edit dl rm
assign_teacher_manual_bak.php.disabled	22718	0644	edit dl rm
assign_teacher_manual_force_conflicts.php	22749	0644	edit dl rm
availableteacherreport.php	12595	0644	edit dl rm
Available_Teacher_Report.php	3554	0644	edit dl rm
batch_schedule.php	9582	0644	edit dl rm
calendar.php	31502	0644	edit dl rm
calendar_schedule.php	8086	0644	edit dl rm
chat.php	16437	0644	edit dl rm
chat_bak.php.disabled	10265	0644	edit dl rm
Check_if_Teacher_Report.php	1639	0644	edit dl rm
complete_schedule_report_by_teacher.php	19799	0644	edit dl rm
courseflagtime.php	3518	0644	edit dl rm
Create_Group_Schedule_Algorithm.php	3939	0644	edit dl rm
Create_Schedule_Algorithm.php	90629	0644	edit dl rm
Create_Schedule_Algorithm_1.php	42430	0644	edit dl rm
Create_Schedule_Algorithm_2.php	78532	0644	edit dl rm
Create_Schedule_Algorithm_2_combined.php	92157	0644	edit dl rm
Create_Schedule_Algorithm_2_combined_both_slots.php	94546	0644	edit dl rm
Create_Schedule_Algorithm_2_combined_both_slots_bak.php.disabled	94611	0644	edit dl rm
Create_Schedule_Algorithm_2_fixed.php	78869	0644	edit dl rm
Create_Schedule_Algorithm_3.php	89594	0644	edit dl rm
Create_Schedule_Algorithm_4.php	89594	0644	edit dl rm
dashboard.php	21103	0644	edit dl rm
deletecoursesession.php	8591	0644	edit dl rm
deleteschedulefromgroup.php	17424	0644	edit dl rm
delete_course.php	607	0644	edit dl rm
delete_course_from_teacher.php	5126	0644	edit dl rm
delete_course_session_handler.php	791	0644	edit dl rm
delete_duplicate_assignments.php	2537	0644	edit dl rm
delete_event.php	1255	0644	edit dl rm
delete_group.php	1913	0644	edit dl rm
delete_holiday.php	743	0644	edit dl rm
delete_retake.php	1324	0644	edit dl rm
delete_schedule_from_group.php	1940	0644	edit dl rm
delete_teacher_absence.php	1015	0644	edit dl rm
delete_teacher_level.php	828	0644	edit dl rm
delete_teacher_unavailability.php	1350	0644	edit dl rm
delete_timeslot.php	626	0644	edit dl rm
display_schedule.php	18662	0644	edit dl rm
do_remove_saturday.php	6402	0644	edit dl rm
duplicate_assignment_report.php	9423	0644	edit dl rm
edit_event.php	1663	0644	edit dl rm
examschedulereport.php	16510	0644	edit dl rm
Exam_Schedule_Report.php	2762	0644	edit dl rm
export_absences.php	1258	0644	edit dl rm
fetch_all_scheduled_courses.php	6325	0644	edit dl rm
fetch_courses.php	9373	0644	edit dl rm
fetch_courses_for_program.php	815	0644	edit dl rm
fetch_courses_for_program_by_schedule.php	4047	0644	edit dl rm
fetch_courses_teacher_preference.php	3954	0644	edit dl rm
fetch_course_for_added_group.php	1046	0644	edit dl rm
fetch_course_hours.php	714	0644	edit dl rm
fetch_course_sessions.php	1405	0644	edit dl rm
fetch_dashboard_charts.php	4282	0644	edit dl rm
fetch_disabled_dates.php	543	0644	edit dl rm
fetch_duplicate_assignments.php	4902	0644	edit dl rm
fetch_events.php	1014	0644	edit dl rm
fetch_exist_dates.php	1141	0644	edit dl rm
fetch_groups_exist_in_schedule.php	959	0644	edit dl rm
fetch_groups_for_program.php	871	0644	edit dl rm
fetch_groups_for_program_legacy.php	775	0644	edit dl rm
fetch_group_timeslot.php	878	0644	edit dl rm
fetch_lockup_courses-1-1.php	14086	0644	edit dl rm
fetch_lockup_courses.php	14587	0644	edit dl rm
fetch_lockup_courses_1.php	13638	0644	edit dl rm
fetch_lockup_courses_2.php	13850	0644	edit dl rm
fetch_lockup_courses_bak.php	8899	0644	edit dl rm
fetch_reserve_courses.php	7567	0644	edit dl rm
fetch_retake_courses.php	957	0644	edit dl rm
fetch_scheduled_courses.php	2254	0644	edit dl rm
fetch_schedule_report_by_group.php	5554	0644	edit dl rm
fetch_teachers_by_group.php	4888	0644	edit dl rm
fetch_teachers_by_group_legacy.php	2421	0644	edit dl rm
fetch_teachers_by_program.php	1871	0644	edit dl rm
fetch_teachers_for_group.php	3265	0644	edit dl rm
fetch_teacher_assignment.php	25405	0644	edit dl rm
fetch_teacher_by_course.php	3982	0644	edit dl rm
fetch_teacher_conflicts-1-1.php	5793	0644	edit dl rm
fetch_teacher_conflicts.php	5766	0644	edit dl rm
fetch_teacher_conflicts_only-1-1.php	8275	0644	edit dl rm
fetch_teacher_conflicts_only-1.php	8737	0644	edit dl rm
fetch_teacher_conflicts_only.php	7725	0644	edit dl rm
fetch_teacher_conflicts_only_force_conflicts.php	7287	0644	edit dl rm
fetch_teacher_conflicts_only_legacy.php	6702	0644	edit dl rm
fetch_teacher_conflicts_showonly-1-1.php	10656	0644	edit dl rm
fetch_teacher_conflicts_showonly.php	10531	0644	edit dl rm
fetch_teacher_load.php	1633	0644	edit dl rm
fetch_teacher_load_legacy.php	1144	0644	edit dl rm
fetch_teacher_prefrence_courses.php	1848	0644	edit dl rm
fetch_teacher_prefrence_courses_accounting.php	1647	0644	edit dl rm
fetch_workload_data.php	4520	0644	edit dl rm
fetch_workload_hours-1.php	2291	0644	edit dl rm
fetch_workload_hours-2.php	2147	0644	edit dl rm
fetch_workload_hours.php	2341	0644	edit dl rm
find_replacement-1-1.php	18603	0644	edit dl rm
find_replacement.php	18313	0644	edit dl rm
Generate Group Schedule.php	17330	0644	edit dl rm
Generate Group Schedule 1.php	18490	0644	edit dl rm
generateschedule.php	15946	0644	edit dl rm
Generate_Schedule.php	34743	0644	edit dl rm
generate_schedule_handler.php	7375	0644	edit dl rm
Generate_Schedule_Script.php	30729	0644	edit dl rm
getlang.php	351	0644	edit dl rm
get_groups_by_program.php	629	0644	edit dl rm
get_schedule_ai.php	37712	0644	edit dl rm
get_schedule_report.php	2471	0644	edit dl rm
group_schedule_form.php	17337	0644	edit dl rm
Lockup_to_Assign.php	12052	0644	edit dl rm
Lockup_to_Assign_bak.php	11301	0644	edit dl rm
main-header-inc.php	7794	0644	edit dl rm
main-header.php	19656	0644	edit dl rm
Preference_Accounting.php	9810	0644	edit dl rm
preference_accounting.php	9603	0644	edit dl rm
preference_secretarial.php	9810	0644	edit dl rm
profile.php	20976	0644	edit dl rm
remove_saturday_course.php	19313	0644	edit dl rm
report_absence.php	21056	0644	edit dl rm
report_absence_1.php	6385	0644	edit dl rm
reserve_course.php	19285	0644	edit dl rm
rewrite_ajax_replace_saturday.php	13189	0644	edit dl rm
rewrite_Create_Schedule_Algorithm.php	90672	0644	edit dl rm
rewrite_Create_Schedule_Algorithm_2.php	91268	0644	edit dl rm
save_schedule.php	3102	0644	edit dl rm
save_schedule_group_course.php	26301	0644	edit dl rm
save_teacher_preference.php	2216	0644	edit dl rm
schedulereportbygroup.php	18013	0644	edit dl rm
schedulereportbyteacher.php	19424	0644	edit dl rm
scheduleteacherbygroupreport.php	37418	0644	edit dl rm
scheduleteacherreport.php	28788	0644	edit dl rm
schedule_report.php	17944	0644	edit dl rm
Schedule_Report_by_Group.php	3741	0644	edit dl rm
Schedule_Report_by_Teacher.php	94634	0644	edit dl rm
swapcourses.php	19813	0644	edit dl rm
teacher_notes.php	18936	0644	edit dl rm
teacher_preference.php	18496	0644	edit dl rm
teacher_preference_by_course.php	19587	0644	edit dl rm
teacher_report_visibility.php	15761	0644	edit dl rm
teacher_unavailability.php	20577	0644	edit dl rm
test.php	14278	0644	edit dl rm
test1.php	22425	0644	edit dl rm
unassigncoursereport.php	15075	0644	edit dl rm
unassign_course.php	19324	0644	edit dl rm
Unassign_Course_Report.php	2058	0644	edit dl rm
unscheduledgroupreport.php	16396	0644	edit dl rm
Unscheduled_Group_Report.php	2411	0644	edit dl rm
updatecourse.php	22454	0644	edit dl rm
updatecoursesessionhours.php	18905	0644	edit dl rm
updatecoursetime.php	22670	0644	edit dl rm
updategroup.php	18619	0644	edit dl rm
updateholiday.php	23332	0644	edit dl rm
updateteacherlevel.php	25433	0644	edit dl rm
updateteacherunavailability.php	11833	0644	edit dl rm
UpdateUser.php	19261	0644	edit dl rm
Update_Course_Hours.php	2027	0644	edit dl rm
update_reserve_course.php	2004	0644	edit dl rm
update_teacher_absence.php	12135	0644	edit dl rm
update_teacher_level	2508	0644	edit dl rm
update_teacher_level.php	2499	0644	edit dl rm
useraccesslist.php	13145	0644	edit dl rm
users.php	9171	0644	edit dl rm
view_swap_log.php	929	0644	edit dl rm
workloadhoursreport.php	8182	0644	edit dl rm

Edit: /home/techb158/workloadmatch.com/Manager/save_schedule_group_course.php (26301B)

<?php
/* // 1. INITIAL SETUP
include_once '../includes/db_connect.php';
include_once '../includes/functions.php';
sec_session_start();

header('Content-Type: application/json');
ini_set('error_log', __DIR__ . '/schedule_error_log.txt');

// 2. READ & VALIDATE JSON PAYLOAD
$payload = file_get_contents('php://input');
$data    = json_decode($payload, true);

if (!is_array($data)) {
    error_log("Invalid payload: $payload");
    http_response_code(400);
    echo json_encode(['error' => 'Invalid data format.']);
    exit;
}

// 3. PREPARE STATEMENTS

// 3A. Fetch course name and duration
$nameStmt = $mysqli->prepare("
    SELECT Course_Name, Course_Time
      FROM Courses
     WHERE Course_ID = ?
");
if (!$nameStmt) {
    error_log("nameStmt error: " . $mysqli->error);
    http_response_code(500);
    exit(json_encode(['error' => 'Server error.']));
}

// 3B. Check for existing master row
//    (10 placeholders: Program_ID, Course_ID, Group_ID, Time_Slot_ID, Course_Hours,
//     Time_Slot, Start_Date, End_Date, Start_Time, End_Time)
$getMainStmt = $mysqli->prepare("
    SELECT Schedule_ID
      FROM course_group_schedule_main
     WHERE Program_ID   = ?
       AND Course_ID    = ?
       AND Group_ID     = ?
       AND Time_Slot_ID = ?
       AND Course_Hours = ?
       AND Time_Slot    = ?
       AND Start_Date   = ?
       AND End_Date     = ?
       AND Start_Time   = ?
       AND End_Time     = ?
");
if (!$getMainStmt) {
    error_log("getMainStmt error: " . $mysqli->error);
    http_response_code(500);
    exit(json_encode(['error' => 'Server error.']));
}

// 3C. Insert new master row when needed (11 placeholders)
//    (Program_ID, Course_ID, Group_ID, Time_Slot_ID, Course_Hours,
//     Reserve_Course, Time_Slot, Start_Date, End_Date, Start_Time, End_Time)
$insertMainStmt = $mysqli->prepare("
    INSERT INTO course_group_schedule_main
      (Program_ID, Course_ID, Group_ID, Time_Slot_ID,
       Course_Hours, Reserve_Course, Time_Slot,
       Start_Date, End_Date, Start_Time, End_Time,
       Assigned, Last_Updated)
    VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, 0, NOW())
");
if (!$insertMainStmt) {
    error_log("insertMainStmt error: " . $mysqli->error);
    http_response_code(500);
    exit(json_encode(['error' => 'Server error.']));
}

// 3D. Insert individual session rows (13 placeholders)
//    (Schedule_ID, Program_ID, Course_ID, Group_ID, Group_Slot_ID,
//     Course_Hours, Course_Name, Reserve_Course, Time_Slot,
//     Start_Date, End_Date, Start_Time, End_Time)
$sessionStmt = $mysqli->prepare("
    INSERT INTO schedule_course_for_group
      (Schedule_ID, Program_ID, Course_ID, Group_ID, Group_Slot_ID,
       Course_Hours, Course_Name, Reserve_Course, Time_Slot,
       Start_Date, End_Date, Start_Time, End_Time,
       Assigned, Last_Updated)
    VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, 0, NOW())
");
if (!$sessionStmt) {
    error_log("sessionStmt error: " . $mysqli->error);
    http_response_code(500);
    exit(json_encode(['error' => 'Server error.']));
}

// 4. GROUP ROWS BY UNIQUE ASSIGNMENT
$assignments = [];

foreach ($data as $row) {
    // Create a unique key for each assignment
    $key = implode('-', [
        $row['program_id'],
        $row['course_id'],
        $row['group_id'],
        $row['group_slot_id'],
        $row['reserve_course'],
        $row['time_slot'],
        $row['start_time'],
        $row['end_time']
    ]);

if (!isset($assignments[$key])) {
        $assignments[$key] = [
            'info'     => $row,
            'sessions' => []
        ];
    }
    $assignments[$key]['sessions'][] = $row;

if ($row['time_slot'] === 0 || $row['time_slot'] === '0') {
        error_log("Zero time_slot detected: " . json_encode($row));
    }
}

// 5. PROCESS EACH ASSIGNMENT
$insertedCount = 0;

foreach ($assignments as $assignment) {
    $info = $assignment['info'];

// 5A. Fetch course name + duration
    $nameStmt->bind_param('i', $info['course_id']);
    $nameStmt->execute();
    $nameStmt->bind_result($courseName, $courseHours);
    $nameStmt->fetch();
    $nameStmt->free_result();

// 5B. Look for existing master row
    // Type string: 5Ã—i (Program_ID, Course_ID, Group_ID, Time_Slot_ID, Course_Hours)
    //              5Ã—s (Time_Slot, Start_Date, End_Date, Start_Time, End_Time)
    $getMainStmt->bind_param(
        'iiiii' . 'sssss',
        $info['program_id'],    // i
        $info['course_id'],     // i
        $info['group_id'],      // i
        $info['group_slot_id'], // i
        $courseHours,           // i
        $info['time_slot'],     // s
        $info['start_date'],    // s
        $info['end_date'],      // s
        $info['start_time'],    // s
        $info['end_time']       // s
    );
    $getMainStmt->execute();
    $getMainStmt->bind_result($mainScheduleID);
    $foundMain = $getMainStmt->fetch();
    $getMainStmt->free_result();

// 5C. If no master row, insert it
    if (!$foundMain || !$mainScheduleID) {
        $reserveCourse = $info['reserve_course']; // integer column

// Type string: 6Ã—i (Program_ID, Course_ID, Group_ID, Time_Slot_ID, Course_Hours, Reserve_Course)
        //              5Ã—s (Time_Slot, Start_Date, End_Date, Start_Time, End_Time)
        $insertMainStmt->bind_param(
            'iiiiiisssss',
            $info['program_id'],    // i
            $info['course_id'],     // i
            $info['group_id'],      // i
            $info['group_slot_id'], // i
            $courseHours,           // i
            $reserveCourse,         // i
            $info['time_slot'],     // s
            $info['start_date'],    // s
            $info['end_date'],      // s
            $info['start_time'],    // s
            $info['end_time']       // s
        );
        if ($insertMainStmt->execute()) {
            $mainScheduleID = $insertMainStmt->insert_id;
        } else {
            error_log("Failed to insert master: " . $insertMainStmt->error);
            continue; // skip sessions for this assignment
        }
    }

// 5D. Insert each session row tied to $mainScheduleID
    foreach ($assignment['sessions'] as $session) {
        $reserveCourse = $session['reserve_course'];

// Correct column order:
        // 1. Schedule_ID (i)
        // 2. Program_ID  (i)
        // 3. Course_ID   (i)
        // 4. Group_ID    (i)
        // 5. Group_Slot_ID (i)
        // 6. Course_Hours  (i)
        // 7. Course_Name   (s)
        // 8. Reserve_Course (i)
        // 9. Time_Slot     (s)
        // 10. Start_Date   (s)
        // 11. End_Date     (s)
        // 12. Start_Time   (s)
        // 13. End_Time     (s)

$sessionStmt->bind_param(
            'iiiiiiissssss',
            $mainScheduleID,           // i
            $session['program_id'],    // i
            $session['course_id'],     // i
            $session['group_id'],      // i
            $session['group_slot_id'], // i
            $courseHours,              // i
            $courseName,               // s
            $reserveCourse,            // i
            $session['time_slot'],     // s
            $session['start_date'],    // s
            $session['end_date'],      // s
            $session['start_time'],    // s
            $session['end_time']       // s
        );
        if ($sessionStmt->execute()) {
            $insertedCount++;
        } else {
            error_log("Session insert error: " . $sessionStmt->error
                      . " - " . json_encode($session));
        }
    }
}

// 6. CLEAN UP & RETURN RESPONSE
$sessionStmt->close();
$insertMainStmt->close();
$getMainStmt->close();
$nameStmt->close();

echo "âœ… Inserted $insertedCount session rows into schedule_course_for_group, all linked to their correct Schedule_ID from course_group_schedule_main.";

// Return a success message with the number of inserted sessions
//echo json_encode([
//    'message' => "Inserted $insertedCount session rows successfully."
//]); */

// 1. INITIAL SETUP
include_once '../includes/db_connect.php';
include_once '../includes/functions.php';
sec_session_start();

header('Content-Type: application/json');
ini_set('error_log', __DIR__ . '/schedule_error_log.txt');

// 2. READ & VALIDATE INPUT
$payload = file_get_contents('php://input');
$data    = json_decode($payload, true);

if (!is_array($data)) {
    error_log("Invalid payload: $payload");
    http_response_code(400);
    echo "Invalid data format.";
    exit;
}

// 3. PREPARE STATEMENTS

// 3A. Fetch course name + duration
$nameStmt = $mysqli->prepare("
    SELECT Course_Name, Course_Time
      FROM Courses
     WHERE Course_ID = ?
");
if (!$nameStmt) {
    error_log("nameStmt prepare failed: " . $mysqli->error);
    http_response_code(500);
    exit("Server error.");
}

// 3B. Check for existing master row
//     Now includes Start_Date AND End_Date (10 placeholders total)
$getMainStmt = $mysqli->prepare("
    SELECT Schedule_ID
      FROM course_group_schedule_main
     WHERE Program_ID   = ?
       AND Course_ID    = ?
       AND Group_ID     = ?
       AND Time_Slot_ID = ?
       AND Course_Hours = ?
       AND Time_Slot    = ?
       AND Start_Date   = ?
       AND End_Date     = ?
       AND Start_Time   = ?
       AND End_Time     = ?
");
if (!$getMainStmt) {
    error_log("getMainStmt prepare failed: " . $mysqli->error);
    http_response_code(500);
    exit("Server error.");
}

// 3C. Insert a new master row when needed
//     11 placeholders (reserve_course plus the 10 other columns)
$insertMainStmt = $mysqli->prepare("
    INSERT INTO course_group_schedule_main
      (Program_ID, Course_ID, Group_ID, Time_Slot_ID,
       Course_Hours, Reserve_Course, Time_Slot,
       Start_Date, End_Date, Start_Time, End_Time,
       Assigned, Last_Updated)
    VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, 0, NOW())
");
if (!$insertMainStmt) {
    error_log("insertMainStmt prepare failed: " . $mysqli->error);
    http_response_code(500);
    exit("Server error.");
}

// 3D. Insert individual session rows (13 placeholders total)
$sessionStmt = $mysqli->prepare("
    INSERT INTO schedule_course_for_group
      (Schedule_ID, Program_ID, Course_ID, Group_ID, Group_Slot_ID,
       Course_Hours, Course_Name, Reserve_Course, Time_Slot,
       Start_Date, End_Date, Start_Time, End_Time,
       Assigned, Last_Updated)
    VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, 0, NOW())
");
if (!$sessionStmt) {
    error_log("sessionStmt prepare failed: " . $mysqli->error);
    http_response_code(500);
    exit("Server error.");
}

// 4. GROUP ROWS BY UNIQUE ASSIGNMENT
$assignments = [];
foreach ($data as $row) {
    $key = implode('-', [
        $row['program_id'],
        $row['course_id'],
        $row['group_id'],
        $row['group_slot_id'],
        $row['reserve_course'],
        $row['time_slot'],
        $row['start_time'],
        $row['end_time']
    ]);

if (!isset($assignments[$key])) {
        $assignments[$key] = [
            'info'     => $row,
            'sessions' => []
        ];
    }
    $assignments[$key]['sessions'][] = $row;

if ($row['time_slot'] === 0 || $row['time_slot'] === '0') {
        error_log("Zero time_slot detected: " . json_encode($row));
    }
}

// 5. PROCESS EACH ASSIGNMENT
$insertedCount = 0;

foreach ($assignments as $assignment) {
    $info = $assignment['info'];

// 5A. Fetch course name and course hours
    $nameStmt->bind_param('i', $info['course_id']);
    $nameStmt->execute();
    $nameStmt->bind_result($course_name, $course_hours);
    $fetched = $nameStmt->fetch();
    $nameStmt->free_result();

if (! $fetched) {
        error_log("No course found for Course_ID=" . $info['course_id']);
        continue; // skip this assignment entirely
    }

// 5B. Look for an existing master row
    // type string = 5Ã—i + 5Ã—s = 'iiiii' . 'sssss'
    $getMainStmt->bind_param(
        'iiiii' . 'sssss',
        $info['program_id'],    // i
        $info['course_id'],     // i
        $info['group_id'],      // i
        $info['group_slot_id'], // i
        $course_hours,          // i
        $info['time_slot'],     // s
        $info['start_date'],    // s
        $info['end_date'],      // s
        $info['start_time'],    // s
        $info['end_time']       // s
    );
    $getMainStmt->execute();
    $getMainStmt->bind_result($mainScheduleID);
    $foundMain = $getMainStmt->fetch();
    $getMainStmt->free_result();

// 5C. If no master row, insert it
    if (! $foundMain || ! $mainScheduleID) {
        $reserve_course = (int) $info['reserve_course'];

// type string = 6Ã—i + 5Ã—s = 'iiiiiisssss'
        $insertMainStmt->bind_param(
            'iiiiiisssss',
            $info['program_id'],    // i
            $info['course_id'],     // i
            $info['group_id'],      // i
            $info['group_slot_id'], // i
            $course_hours,          // i
            $reserve_course,        // i
            $info['time_slot'],     // s
            $info['start_date'],    // s
            $info['end_date'],      // s
            $info['start_time'],    // s
            $info['end_time']       // s
        );
        if ($insertMainStmt->execute()) {
            $mainScheduleID = $insertMainStmt->insert_id;
        } else {
            error_log("Failed to insert master row: " . $insertMainStmt->error);
            continue; // skip sessions for this assignment
        }
    }

// 5D. Insert each session row tied to $mainScheduleID
    foreach ($assignment['sessions'] as $row) {
        $reserve_course = (int) $row['reserve_course'];

// type string = 7Ã—i + 6Ã—s = 'iiiiiiissssss'
        $sessionStmt->bind_param(
            'iiiiiisisssss',
            $mainScheduleID,         // i
            $row['program_id'],      // i
            $row['course_id'],       // i
            $row['group_id'],        // i
            $row['group_slot_id'],   // i
            $course_hours,           // i
            $course_name,            // s
            $reserve_course,         // i
            $row['time_slot'],       // s
            $row['start_date'],      // s
            $row['end_date'],        // s
            $row['start_time'],      // s
            $row['end_time']         // s
        );
        if ($sessionStmt->execute()) {
            $insertedCount++;
        } else {
            error_log(
                "Session insert failed: " .
                $sessionStmt->error .
                " - row: " . json_encode($row)
            );
        }
    }
}

// 6. CLEAN UP & OUTPUT
$sessionStmt->close();
$insertMainStmt->close();
$getMainStmt->close();
$nameStmt->close();

// Assuming you already have $mysqli as your mysqli connection

$sql = "
UPDATE course_group_schedule_main AS main
JOIN (
    SELECT
        Schedule_ID,
        Program_ID,
        Course_ID,
        Group_ID,
        MAX(End_Date) AS MaxEndDate
    FROM schedule_course_for_group
    GROUP BY Schedule_ID, Program_ID, Course_ID, Group_ID
) AS scfg
  ON main.Schedule_ID = scfg.Schedule_ID
 AND main.Program_ID = scfg.Program_ID
 AND main.Course_ID = scfg.Course_ID
 AND main.Group_ID = scfg.Group_ID
SET main.End_Date = scfg.MaxEndDate
";

// Run the query
if ($mysqli->query($sql)) {
   // echo "course_group_schedule_main updated successfully.";
} else {
    echo "Error updating records: " . $mysqli->error;
}

echo "âœ… Inserted $insertedCount session rows into schedule_course_for_group.";

/* include_once '../includes/db_connect.php';
include_once '../includes/functions.php';
sec_session_start();

ini_set('error_log', __DIR__ . '/schedule_error_log.txt');

$payload = file_get_contents('php://input');
$data = json_decode($payload, true);

if (!is_array($data)) {
    error_log("âŒ Invalid input payload: $payload");
    http_response_code(400);
    echo "Invalid data format.";
    exit;
}

//error_log("âœ… Decoded data structure: " . print_r($data, true));
//
//exit();
//exit("Server error.");

$nameStmt = $mysqli->prepare("SELECT Course_Name FROM Courses WHERE Course_ID = ?");
if (! $nameStmt) {
    error_log("âŒ Course name lookup failed: " . $mysqli->error);
    http_response_code(500);
    exit("Server error.");
}

$stmt = $mysqli->prepare("INSERT INTO schedule_course_for_group
  (Schedule_ID, Program_ID, Course_ID, Group_ID, Group_Slot_ID, Course_Name,
   Reserve_Course, Time_Slot, Start_Date, End_Date, Start_Time, End_Time,
   Assigned, Last_Updated)
VALUES
  (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, 0, NOW())");

if (! $stmt) {
    error_log("âŒ Insert prepare failed: " . $mysqli->error);
    http_response_code(500);
    exit("Server error.");
}

$inserted = 0;
$grouped = [];

// Fetch the last Schedule_ID
$result = $mysqli->query("SELECT MAX(Schedule_ID) AS LastID FROM schedule_course_for_group");
$row = $result->fetch_assoc();
$currentScheduleID = (int) $row['LastID'];

$checkDuplicateStmt = $mysqli->prepare("
    SELECT COUNT(*) FROM schedule_course_for_group
    WHERE Program_ID = ? AND Course_ID = ? AND Group_ID = ?
      AND Time_Slot = ? AND Start_Date = ? AND End_Date = ?
      AND Start_Time = ? AND End_Time = ?
");
if (! $checkDuplicateStmt) {
    error_log("âŒ Failed to prepare checkDuplicateStmt: " . $mysqli->error);
    exit("Server error.");
}

foreach ($data as $row) {
    $program_id     = (int) $row['program_id'];
    $course_id      = (int) $row['course_id'];
    $group_id       = (int) $row['group_id'];
    $group_slot_id  = (int) $row['group_slot_id'];
    $reserve_course = (int) $row['reserve_course'];
    $time_slot      = trim($row['time_slot'] ?? '');
    $start_date     = trim($row['start_date'] ?? '');
    $end_date       = trim($row['end_date'] ?? '') ?: $start_date;
    $start_time     = trim($row['start_time'] ?? '');
    $end_time       = trim($row['end_time'] ?? '');

if (!$program_id || !$course_id || !$group_id || !$group_slot_id || $time_slot === '' || $start_date === '') {
        error_log("âš ï¸ Skipping invalid row: " . json_encode($row));
        continue;
    }

// Lookup course name
    $nameStmt->bind_param('i', $course_id);
    $nameStmt->execute();
    $nameStmt->bind_result($course_name);
    $nameStmt->fetch();
    $nameStmt->free_result();

// Always add to grouped list (even if duplicate in session table)
    $key = "$program_id-$course_id-$group_id-$time_slot-$start_time-$end_time";
    if (!isset($grouped[$key])) {
        $grouped[$key] = [
            'program_id' => $program_id,
            'course_id' => $course_id,
            'group_id' => $group_id,
            'group_slot_id' => $group_slot_id,
            'reserve_course' => $reserve_course,
            'time_slot' => $time_slot,
            'start_time' => $start_time,
            'end_time' => $end_time,
            'start_date' => $start_date,
            'end_date' => $end_date,
        ];
    } else {
        $grouped[$key]['start_date'] = min($grouped[$key]['start_date'], $start_date);
        $grouped[$key]['end_date'] = max($grouped[$key]['end_date'], $end_date);
    }

// Check for duplicate
    $checkDuplicateStmt->bind_param(
        'iiisssss',
        $program_id,
        $course_id,
        $group_id,
        $time_slot,
        $start_date,
        $end_date,
        $start_time,
        $end_time
    );
    $checkDuplicateStmt->execute();
    $checkDuplicateStmt->bind_result($exists);
    $checkDuplicateStmt->fetch();
    $checkDuplicateStmt->free_result();

if ($exists > 0) {
        error_log("âš ï¸ Duplicate row skipped (already exists): " . json_encode($row));
        continue; // Skip inserting into session table
    }

// Insert new session
    $currentScheduleID++;
    $stmt->bind_param(
        'iiiiisisssss',
        $currentScheduleID,
        $program_id,
        $course_id,
        $group_id,
        $group_slot_id,
        $course_name,
        $reserve_course,
        $time_slot,
        $start_date,
        $end_date,
        $start_time,
        $end_time
    );

if ($stmt->execute()) {
        $inserted++;
    } else {
        error_log("âŒ Insert failed: " . $stmt->error . " - row: " . json_encode($row));
    }
}

// Final: Insert into course_group_schedule_main
$checkStmt = $mysqli->prepare("
    SELECT COUNT(*) FROM course_group_schedule_main
    WHERE Program_ID = ? AND Course_ID = ? AND Group_ID = ?
    AND Time_Slot = ? AND Start_Time = ? AND End_Time = ?
");

$insertStmt2 = $mysqli->prepare("
    INSERT INTO course_group_schedule_main
    (Program_ID, Course_ID, Group_ID, Time_Slot_ID, Reserve_Course, Time_Slot,
     Start_Date, End_Date, Start_Time, End_Time, Assigned, Last_Updated)
VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, 0, NOW())");

$mainInserted = 0;

foreach ($grouped as $g) {
    $checkStmt->bind_param(
        'iiisss',
        $g['program_id'],
        $g['course_id'],
        $g['group_id'],
        $g['time_slot'],
        $g['start_time'],
        $g['end_time']
    );
    $checkStmt->execute();
    $checkStmt->bind_result($count);
    $checkStmt->fetch();
    $checkStmt->free_result();

if ($count == 0) {
        $insertStmt2->bind_param(
            'iiiissssss',
            $g['program_id'],
            $g['course_id'],
            $g['group_id'],
            $g['group_slot_id'],
            $g['reserve_course'],
            $g['time_slot'],
            $g['start_date'],
            $g['end_date'],
            $g['start_time'],
            $g['end_time']
        );
        if ($insertStmt2->execute()) {
            $mainInserted++;
        } else {
            error_log("âŒ Failed to insert into Main: " . $insertStmt2->error);
        }
    }
}

$stmt->close();
$insertStmt2->close();
$checkStmt->close();
$nameStmt->close();
$checkDuplicateStmt->close();

echo "âœ… Inserted $inserted rows into schedule_course_for_group. Inserted $mainInserted grouped rows into course_group_schedule_main.";

//echo "âœ… Saved all session rows. Inserted $mainInserted new grouped rows into course_group_schedule_main.";
//echo "âœ… Inserted $inserted session rows into schedule_course_for_group. Inserted $mainInserted grouped rows into course_group_schedule_main.";

/*****
// Enable error logging
//ini_set('log_errors', 1);
ini_set('error_log', __DIR__ . '/schedule_error_log.txt');

// Read & decode incoming JSON
$payload = file_get_contents('php://input');
$data    = json_decode($payload, true);

if (!is_array($data)) {
    error_log("âŒ Invalid input payload: $payload");
    http_response_code(400);
    echo "Invalid data format.";
    exit;
}

// Prepare a statement to look up Course_Name
$nameStmt = $mysqli->prepare(
    "SELECT Course_Name
       FROM Courses
      WHERE Course_ID = ?"
);
if (! $nameStmt) {
    error_log("âŒ Name-lookup prepare failed: " . $mysqli->error);
    http_response_code(500);
    echo "Server error.";
    exit;
}

// Prepare the insert (now including Course_Name)
$sql = "INSERT INTO schedule_course_for_group
  (Program_ID, Course_ID, Group_ID, Group_Slot_ID, Course_Name,
   Reserve_Course, Time_Slot, Start_Date, End_Date, Start_Time, End_Time,
   Assigned, Last_Updated)
VALUES
  (?,          ?,         ?,        ?,               ?,
   ?,             ?,         ?,          ?,          ?,
   ?,          0,        NOW())";
$stmt = $mysqli->prepare($sql);
if (! $stmt) {
    error_log("âŒ Insert-prepare failed: " . $mysqli->error);
    http_response_code(500);
    echo "Server error.";
    exit;
}

$inserted = 0;

foreach ($data as $row) {
    // pull out & sanitize
    $program_id     = (int) $row['program_id'];
    $course_id      = (int) $row['course_id'];
    $group_id       = (int) $row['group_id'];
    $group_slot_id  = (int) $row['group_slot_id'];
    $reserve_course = (int) $row['reserve_course'];
    $time_slot      = trim($row['time_slot'] ?? '');
    $start_date     = trim($row['start_date'] ?? '');
    $end_date       = trim($row['end_date'] ?? '');
    $start_time     = trim($row['start_time'] ?? '');
    $end_time       = trim($row['end_time'] ?? '');

// default end_date to start_date if empty
    if ($end_date === '') {
        $end_date = $start_date;
    }

// basic sanity check
    if (! $program_id
        || ! $course_id
        || ! $group_id
        || ! $group_slot_id
        || $time_slot === ''
        || $start_date === ''
        || $end_date === ''
    ) {
        error_log("âš ï¸ Skipping invalid row: " . json_encode($row));
        continue;
    }

// 1) look up Course_Name
    $nameStmt->bind_param('i', $course_id);
    $nameStmt->execute();
    $nameStmt->bind_result($course_name);
    if (! $nameStmt->fetch()) {
        $course_name = ''; // or some default
    }
    $nameStmt->free_result();

// 2) insert
    $stmt->bind_param(
        'iiiisisssss',
        $program_id,    // i
        $course_id,     // i
        $group_id,      // i
        $group_slot_id, // i
        $course_name,   // s
        $reserve_course,// i
        $time_slot,     // s
        $start_date,    // s
        $end_date,      // s
        $start_time,    // s
        $end_time       // s
    );

if ($stmt->execute()) {
        $inserted++;
    } else {
        error_log("âŒ Insert failed: " . $stmt->error . " - row: " . json_encode($row));
    }
}

$stmt->close();
$nameStmt->close();

echo "âœ… Inserted $inserted row(s) into schedule_course_for_group.";
**/

cmd: