<?php
// refresh.php

// Ausgabe als reiner Text (alternativ kann JSON verwendet werden)
header('Content-Type: text/plain');

// Datenbank-Verbindungsparameter (bitte anpassen)
$host    = 'localhost';
$db      = 'web35_vysion';
$user    = 'vysion_api';
$pass    = '7e0pn9~2Z';
$charset = 'utf8mb4';

$dsn = "mysql:host=$host;dbname=$db;charset=$charset";
$options = [
    PDO::ATTR_ERRMODE            => PDO::ERRMODE_EXCEPTION,
    PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_ASSOC,
];

try {
    $pdo = new PDO($dsn, $user, $pass, $options);
} catch (PDOException $e) {
    echo "Database connection failed: " . $e->getMessage();
    exit;
}

// Bearer Token für den Mastodon API-Aufruf (bitte anpassen)
$bearerToken = '99jJEXMrMPSGKyg0wp-OrGJ-5s38XPLlE0lmNmv6QSI';

// Alle Hashtags aus der Tabelle abrufen
$stmt = $pdo->query("SELECT hashtag, hashtag_id FROM hashtags");
$hashtags = $stmt->fetchAll();

if (!$hashtags) {
    echo "Keine Hashtags gefunden.\n";
    exit;
}

// SQL-Statement zum Einfügen in die findings-Tabelle
// Hier wird INSERT IGNORE verwendet, um doppelte Einträge (basierend auf dem Primary Key (hashtag_id, post_id)) zu überspringen.
$insertSql = "INSERT IGNORE INTO findings (
    hashtag_id, 
    post_id, 
    created_at, 
    in_reply_to_id, 
    replies_count, 
    reblogs_count, 
    favorites_count, 
    acc_id, 
    username, 
    acct
) VALUES (
    :hashtag_id, :post_id, :created_at, :in_reply_to_id, :replies_count, :reblogs_count, :favorites_count, :acc_id, :username, :acct
)";
$insertStmt = $pdo->prepare($insertSql);

// Für jeden Hashtag den Mastodon API-Aufruf tätigen
foreach ($hashtags as $row) {
    $hashtag = $row['hashtag'];
    $hashtag_id = $row['hashtag_id'];

    // Baue den API-URL: Beispiel: https://mastodon.social/api/v1/timelines/tag/fashionforwardvienna
    $apiUrl = "https://mastodon.social/api/v1/timelines/tag/" . urlencode($hashtag);

    // cURL initialisieren
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $apiUrl);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($ch, CURLOPT_HTTPHEADER, [
        "Authorization: Bearer $bearerToken"
    ]);

    $response = curl_exec($ch);
    if(curl_errno($ch)) {
        echo "cURL Fehler für Hashtag $hashtag: " . curl_error($ch) . "\n";
        curl_close($ch);
        continue;
    }
    $httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
    curl_close($ch);

    if ($httpCode != 200) {
        echo "API-Aufruf für Hashtag $hashtag lieferte HTTP-Code $httpCode\n";
        continue;
    }

    // JSON-Antwort dekodieren
    $data = json_decode($response, true);
    if (!$data) {
        echo "Fehler beim Dekodieren des JSON für Hashtag $hashtag.\n";
        continue;
    }

    // Jeden Post im Ergebnis verarbeiten und in die findings-Tabelle einfügen
    foreach ($data as $post) {
        // Mapping der Felder aus dem JSON zur Tabelle findings:
        // "id"                  -> post_id
        // "created_at"          -> created_at
        // "in_reply_to_id"      -> in_reply_to_id
        // "replies_count"       -> replies_count
        // "reblogs_count"       -> reblogs_count
        // "favourites_count"    -> favorites_count
        // account -> "id"       -> acc_id
        // account -> "username" -> username
        // account -> "acct"     -> acct

        $post_id         = isset($post['id']) ? $post['id'] : null;
        $created_at      = isset($post['created_at']) ? $post['created_at'] : null;
        $in_reply_to_id  = isset($post['in_reply_to_id']) ? $post['in_reply_to_id'] : null;
        $replies_count   = isset($post['replies_count']) ? $post['replies_count'] : 0;
        $reblogs_count   = isset($post['reblogs_count']) ? $post['reblogs_count'] : 0;
        $favorites_count = isset($post['favourites_count']) ? $post['favourites_count'] : 0;

        $acc_id   = isset($post['account']['id']) ? $post['account']['id'] : null;
        $username = isset($post['account']['username']) ? $post['account']['username'] : null;
        $acct     = isset($post['account']['acct']) ? $post['account']['acct'] : null;

        // Datensatz in die Tabelle einfügen
        try {
            $insertStmt->execute([
                'hashtag_id'      => $hashtag_id,
                'post_id'         => $post_id,
                'created_at'      => $created_at,
                'in_reply_to_id'  => $in_reply_to_id,
                'replies_count'   => $replies_count,
                'reblogs_count'   => $reblogs_count,
                'favorites_count' => $favorites_count,
                'acc_id'          => $acc_id,
                'username'        => $username,
                'acct'            => $acct
            ]);
        } catch (PDOException $e) {
            echo "Fehler beim Einfügen des Posts $post_id für Hashtag $hashtag: " . $e->getMessage() . "\n";
        }
    }

    echo "Hashtag '$hashtag' verarbeitet.\n";
}

echo "Refresh abgeschlossen.\n";
?>