<?php
/**
 * getAuthorityDataRaw.php - Liefert Daten für Autocomplete-Suche ODER einzelnen Eintrag per ID
 * 
 * Parameter:
 * - id: ID eines einzelnen Eintrags (für ModifyTerm)
 * - search: Suchbegriff für Autocomplete (min. 2 Zeichen)
 * - authType: Typ (Subject, Person, Corporate, Publisher, Classification)
 * - limit: Max. Anzahl Ergebnisse (Standard: 10)
 */

header('Content-Type: application/json; charset=utf-8');

include "db_connection.php";

$conn = mysqli_connect(HOST, USER, PASSWORD, DATABASE);
if (mysqli_connect_errno()) {
    echo json_encode(['rows' => []]);
    exit();
}

mysqli_set_charset($conn, "utf8");

// Prüfen ob ID-Abfrage (für ModifyTerm)
$id = isset($_GET['id']) ? intval($_GET['id']) : 0;

if ($id > 0) {
    // Einzelnen Eintrag per ID laden
    $sql = "SELECT a.ID, a.Type, a.DetailType, a.Classification, 
                   e.Text, e.CompleteText, e.Comment as Scopenote
            FROM Anchor a 
            LEFT JOIN Entry e ON a.ID = e.ID 
            WHERE a.ID = $id";
    
    $result = mysqli_query($conn, $sql);
    
    if ($result && mysqli_num_rows($result) > 0) {
        $row = mysqli_fetch_assoc($result);
        
        // Descriptor erstellen
        $descriptor = strtolower($row['Text'] ?? '');
        $descriptor = str_replace(' ', '_', $descriptor);
        
        echo json_encode([
            'rows' => [[
                'ID' => $row['ID'],
                'Type' => $row['Type'],
                'DetailType' => $row['DetailType'] ?? '',
                'Classification' => $row['Classification'] ?? '',
                'Text' => $row['Text'] ?? '',
                'CompleteText' => $row['CompleteText'] ?? '',
                'Scopenote' => $row['Scopenote'] ?? '',
                'Descriptor' => $descriptor
            ]]
        ], JSON_UNESCAPED_UNICODE);
    } else {
        echo json_encode(['rows' => []]);
    }
    
    mysqli_close($conn);
    exit();
}

// Sonst: Autocomplete-Suche
$search = isset($_GET['search']) ? trim($_GET['search']) : '';
$authType = isset($_GET['authType']) ? trim($_GET['authType']) : '';
$limit = isset($_GET['limit']) ? intval($_GET['limit']) : 10;

if (strlen($search) < 2) {
    echo json_encode([]);
    exit();
}

// Erlaubte Typen
$allowedTypes = ['Subject', 'Person', 'Corporate', 'Publisher', 'Classification'];

// SQL aufbauen
$searchEscaped = mysqli_real_escape_string($conn, $search);

$sql = "SELECT a.ID, a.Type, a.DetailType, e.Text, e.CompleteText
        FROM Anchor a 
        LEFT JOIN Entry e ON a.ID = e.ID 
        WHERE (e.Text LIKE '%{$searchEscaped}%' OR e.CompleteText LIKE '%{$searchEscaped}%')";

// Typ-Filter falls angegeben
if (!empty($authType) && in_array($authType, $allowedTypes)) {
    $sql .= " AND a.Type = '" . mysqli_real_escape_string($conn, $authType) . "'";
}

$sql .= " ORDER BY e.Text ASC LIMIT $limit";

$result = mysqli_query($conn, $sql);

$data = [];
if ($result) {
    while ($row = mysqli_fetch_assoc($result)) {
        $data[] = [
            'id' => $row['ID'],
            'value' => $row['Text'],
            'text' => $row['Text'],
            'type' => $row['Type'],
            'detailType' => $row['DetailType'] ?? '',
            'completeText' => $row['CompleteText'] ?? ''
        ];
    }
}

mysqli_close($conn);

echo json_encode($data, JSON_UNESCAPED_UNICODE);
?>