<?php

if ( empty($_SESSION['access_granted_kampfrichter']) || $_SESSION['access_granted_kampfrichter'] !== true || empty($_SESSION['passcodekampfrichter_id']) || intval($_SESSION['passcodekampfrichter_id']) < 1 ) {
    http_response_code(403);
    exit;
}

// ========== Form handling logic ==========
$form_message = $_SESSION['form_message'] ?? '';
unset($_SESSION['form_message']);
// Handle recalculate all scores action
if ($selecteduser === 'admin' && isset($_POST['recalculate_scores'])) {
if (!verify_csrf()) {
    $form_message = 'Sicherheitsproblem bei der Neuberechnung.';
} else {
    $disciplines = ['sprung', 'barren', 'balken', 'boden'];
    // Build column list
    $columns = implode(', ', array_map(fn ($d) => "`note $d`", $disciplines));

    $columns_array = array_merge(
        ['id', 'programm'],
        array_map(fn($d) => "note $d", $disciplines)
    );


    $all_rows = db_select($mysqli, $tableTurnerinnen, $columns_array, 'bezahlt = ? OR bezahltoverride = ?', ['2', '5']);


    $success = 0;
    // Step 1: Calculate gesamtpunktzahl and update per row
    foreach ($all_rows as $row) {
		$sum = 0;
		foreach ($disciplines as $discipline) {
			$value = $row["note $discipline"];
			if (is_numeric($value)) {
			$sum += floatval($value);
			}
		}
		db_update($mysqli, $tableTurnerinnen, ['gesamtpunktzahl' => $sum], ['id' => $row['id']]);
		$success++;
    }

    // Step 2: Re-fetch rows grouped by programm with updated gesamtpunktzahl
    
    $all_programms = db_get_col($mysqli, "SELECT DISTINCT programm FROM ".$tableTurnerinnen);
    foreach ($all_programms as $programm) {
    $group = db_select($mysqli, $tableTurnerinnen, ['id', 'gesamtpunktzahl', 'note sprung', 'note barren', 'note balken', 'note boden', 'geburtsdatum'], 'programm = ? AND (bezahlt = ? OR bezahltoverride = ?)', [$programm, '2', '5']);

    usort($group, function ($a, $b) {
        $scoreA = floatval($a['gesamtpunktzahl']);
        $scoreB = floatval($b['gesamtpunktzahl']);

        if ($scoreA !== $scoreB) return $scoreB <=> $scoreA;

        // Only for top 3 tie-breaking
        $scoresA = [
        floatval($a['note sprung']),
        floatval($a['note barren']),
        floatval($a['note balken']),
        floatval($a['note boden']),
        ];
        $scoresB = [
        floatval($b['note sprung']),
        floatval($b['note barren']),
        floatval($b['note balken']),
        floatval($b['note boden']),
        ];

        rsort($scoresA);
        rsort($scoresB);

        $sumTop3A = $scoresA[0] + $scoresA[1] + $scoresA[2];
        $sumTop3B = $scoresB[0] + $scoresB[1] + $scoresB[2];
        if (abs($sumTop3A - $sumTop3B) > 0.001) return $sumTop3B <=> $sumTop3A;

        $sumTop2A = $scoresA[0] + $scoresA[1];
        $sumTop2B = $scoresB[0] + $scoresB[1];
        if (abs($sumTop2A - $sumTop2B) > 0.001) return $sumTop2B <=> $sumTop2A;

        if (abs($scoresA[0] - $scoresB[0]) > 0.001) return $scoresB[0] <=> $scoresA[0];

        // Younger participant ranks higher in case of full tie
        $dateA = strtotime($a['geburtsdatum']);
        $dateB = strtotime($b['geburtsdatum']);
        return $dateB <=> $dateA; // later birthdate = younger = better
    });

    // Step 2: Assign ranks
    $ranked = [];
    $current_rank = 1;
    $i = 0;

    while ($i < count($group)) {
        $current = $group[$i];
        $tie_group = [$current];
        $j = $i + 1;

        while ($j < count($group)) {
        $next = $group[$j];

        // Tie logic
        if ($current_rank <= 3) {
            // Top 3: full tie-breaking
            $is_tie =
            round(floatval($current['gesamtpunktzahl']), 3) === round(floatval($next['gesamtpunktzahl']), 3) &&
            round(floatval($current['note sprung']), 3) === round(floatval($next['note sprung']), 3) &&
            round(floatval($current['note barren']), 3) === round(floatval($next['note barren']), 3) &&
            round(floatval($current['note balken']), 3) === round(floatval($next['note balken']), 3) &&
            round(floatval($current['note boden']), 3) === round(floatval($next['note boden']), 3) &&
            $current['geburtsdatum'] === $next['geburtsdatum'];
        } else {
            // Ranks > 3: only check gesamtpunktzahl
            $is_tie = round(floatval($current['gesamtpunktzahl']), 3) === round(floatval($next['gesamtpunktzahl']), 3);
        }

        if ($is_tie) {
            $tie_group[] = $next;
            $j++;
        } else {
            break;
        }
        }

        // Assign the same rank for all ties in ranks > 3
        foreach ($tie_group as $entry) {
        $ranked[] = [
            'id' => $entry['id'],
            'rang' => $current_rank
        ];
        }

        $i += count($tie_group);
        $current_rank += count($tie_group);
    }

    // Step 3: Write all ranks to DB
    foreach ($ranked as $r) {
        db_update($mysqli, $tableTurnerinnen, ['rang' => $r['rang']], ['id' => $r['id']]);
    }
    }


    $_SESSION['form_message'] =
    $success . ' Einträge wurden aktualisiert und neu gerankt.';
    header("Location: ". $_SERVER['REQUEST_URI']);
    exit;
}
}

if ($selecteduser === 'admin' && isset($_POST['reset_scores'])) {
if (!verify_csrf()) {
    $form_message = 'Sicherheitsproblem bei der Neuberechnung.';
} else {
    $all_rows = db_select($mysqli, $tableTurnerinnen, 'id');
    $success = 0;
    foreach ($all_rows as $row) {
    db_update($mysqli, $tableTurnerinnen, ['gesamtpunktzahl' => 0, 'rang' => 0], ['id' => $row['id']]);
    $success++;
    }

    $_SESSION['form_message'] = '<div class="success">' . $success . ' Einträge wurden zurückgesetzt.</div>';
    header("Location: ". $_SERVER['REQUEST_URI']);
    exit;
}
}


// === EDIT MODE: Load existing data if edit_id is present in URL ===
$edit_row = null;
if (isset($_GET['edit_id']) && is_numeric($_GET['edit_id']) && !isset($_POST['submit_turnerinnen_form'])) {
    $edit_id = intval($_GET['edit_id']);
    
    $edit_row = db_select($mysqli, $tableTurnerinnen, '*', 'id = ?', [$edit_id]);
    
    foreach ($disciplines as $discipline) {
    if ($selecteduser === ucfirst($discipline) || $selecteduser === 'admin') {
        $_POST["d-note_{$discipline}"] = $edit_row["d-note {$discipline}"] ??
        '';
        $_POST["note_{$discipline}"] = $edit_row["note {$discipline}"] ?? '';
    }
    }
    if ($selecteduser === 'admin') {
    $gesamt = 0;
    foreach ($disciplines as $discipline) {
        if (isset($edit_row[0]["note {$discipline}"]) && is_numeric($edit_row[0]["note {$discipline}"])) {
        $gesamt += floatval($edit_row[0]["note {$discipline}"]);
        }
    }
    $_POST["gesamtpunktzahl"] = $gesamt;
    $rang = isset($_POST['rang']) ? intval($_POST['rang']) : 0; // Safely get and cast to int
    $data_to_insert["rang"] = $rang;
    $data_formats[] = '%d';
    }

    $_POST['edit_id'] = $edit_id;
}

if (isset($_POST['submit_turnerinnen_form'])) {
    // Check nonce
    if (!verify_csrf()) {
    $form_message = 'Sicherheitsproblem: Ungültige Formularübermittlung.';
    } else {


    foreach ($disciplines as $discipline) {
        if ($selecteduser === ucfirst($discipline) || $selecteduser === 'admin') {
        ${"d_note_$discipline"} = floatval($_POST["d-note_{$discipline}"]);
        ${"note_$discipline"} = floatval($_POST["note_{$discipline}"]);

        // Add to data array
        $data_to_insert["d-note $discipline"] = ${"d_note_$discipline"};
        $data_to_insert["note $discipline"] = ${"note_$discipline"};

        $data_formats[] = '%f'; // float format for d-note
        $data_formats[] = '%f';
        // float format for note
        }
    }

    if ($selecteduser === 'admin') {
        $gesamtpunktzahl = isset($_POST['gesamtpunktzahl']) ?
        intval($_POST['gesamtpunktzahl']) : 0; // Safely get and cast to int
        $data_to_insert["gesamtpunktzahl"] = $gesamtpunktzahl;
        $data_formats[] = '%f';
        // CORRECTED LINE: Get 'rang' from $_POST
        $rang = isset($_POST['rang']) ?
        intval($_POST['rang']) : 0; // Safely get and cast to int
        $data_to_insert["rang"] = $rang;
        $data_formats[] = '%d';
    }


    // Check if we are editing an existing entry
    $is_editing = isset($_POST['edit_id']) && is_numeric($_POST['edit_id']) && $_POST['edit_id'] > 0;
    if ($is_editing) {
        $edit_id = intval($_POST['edit_id']);
        $updated = db_update($mysqli, $tableTurnerinnen, $data_to_insert, ['id' => $edit_id]);
        if ($updated === false) {
        $form_message = 'Fehler beim Aktualisieren des Eintrags.';
        } else if ($updated === 0) {
        $form_message = 'Keine Änderungen vorgenommen.';
        } else {
        $_SESSION['form_message'] = 'Eintrag erfolgreich aktualisiert!';
        $_POST = [];
        
        $parsed = parse_url($_SERVER['REQUEST_URI']);

        if (!isset($parsed['query'])) {
            return $url;
        }
    
        parse_str($parsed['query'], $query);
    
        unset($query[$param]); // remove the parameter
    
        $base = $parsed['path'] ?? '';
        $new_query = http_build_query($query);
    
        $url = $new_query ? $base . '?' . $new_query : $base;

        header("Location: ". $url);
        
        exit;
        }
    }
    }
}


if ((isset($_POST['prev_abt'])) && !empty($_POST['prev_abt_submit'])) {
    $value = $aktabt;
    if ($value > 1){
        $value -= 1;
        $name = 'wk_panel_current_abt';

        $stmt = $mysqli->prepare("INSERT INTO $tableVar (`name`, `value`) VALUES (?, ?) ON DUPLICATE KEY UPDATE `value` = VALUE(`value`)");

        $stmt->bind_param("ss", $name, $value);

        $stmt->execute();
        $stmt->close();
    }
    header("Location: /intern/kampfrichter");
exit;
}

if ((isset($_POST['next_abt'])) && !empty($_POST['next_abt_submit'])) {
    $value = $aktabt;
    $maxvalue = db_get_var($mysqli, "SELECT name FROM $tableAbt ORDER BY name DESC LIMIT 1");

    if ($value < $maxvalue){
        $value += 1;
        $name = 'wk_panel_current_abt';

        $stmt = $mysqli->prepare("INSERT INTO $tableVar (`name`, `value`) VALUES (?, ?) ON DUPLICATE KEY UPDATE `value` = VALUE(`value`)");

        $stmt->bind_param("ss", $name, $value);

        $stmt->execute();
        $stmt->close();
    }
    header("Location: /intern/kampfrichter");
    exit;
}

    
if (!isset($_SESSION['currentsubabt'])){
    $_SESSION['currentsubabt'] = 1;
}

if (!isset($_SESSION['last_abt'])){
    $_SESSION['last_abt'] = $aktabt;
}

if ($_SESSION['last_abt'] !== $aktabt){
    $_SESSION['currentsubabt'] = 1;
    $_SESSION['last_abt'] = $aktabt;
}

if ((isset($_POST['prev_subabt'])) && !empty($_POST['prev_subabt_submit'])) {
    $value = $_SESSION['currentsubabt'];
    if ($value > 1){
        $_SESSION['currentsubabt']--;
        $_SESSION['currentEditId'] = false;
        $_SESSION['last_abt'] = $aktabt;
    }
    header("Location: /intern/kampfrichter");
    exit;
}

if ((isset($_POST['next_subabt'])) && !empty($_POST['next_subabt_submit'])) {
    $value = $_SESSION['currentsubabt'];
    if ($value < $maxsubabt){
        $_SESSION['currentsubabt']++;
        $_SESSION['currentEditId'] = false;
        $_SESSION['last_abt'] = $aktabt;
    }
    header("Location: /intern/kampfrichter");
    exit;
}

if ( isset($_POST['togle_advanced_mode_admin']) && !empty($_POST['togle_advanced_mode_admin_submit']) ) {
    $current_value = $focus_view_admin;
    $new_value = !$current_value;

    $_SESSION['abtViewAdmin'] = $new_value;

    header("Location: /intern/kampfrichter");
    exit;
}

if ((isset($_POST['upload_remove_pdf_for_programm'])) && !empty($_POST['programm_remove_export'])) {

    $current_year = date('Y');
    $monat = date('n');
    if ($monat > 6) $current_year++;
    
    $programm = trim($_POST['programm_remove_export']);

    $dir = $_SERVER['DOCUMENT_ROOT'] . '/wp-content/ergebnisse';
    if (!file_exists($dir)) {
        mkdir($dir, 0755, true);
    }
    $localPath = $_SERVER['DOCUMENT_ROOT'] . "/wp-content/ergebnisse/KTBB_Ergebnisse_" . $programm . "_" . $current_year . ".pdf";

    // --- ADDED CODE START ---
    // Check if the file already exists and delete it
    if (file_exists($localPath)) {
        unlink($localPath);
    }
    // --- ADDED CODE END ---

    $_SESSION['form_message'] = 'PDF wurde gelöscht';
    

    header("Location: ". $_SERVER['REQUEST_URI']);
}