<?php
/**
 * Regeneriert App/assets/data/waypoints.sql aus der aktuellen geo_waypoints-Tabelle.
 * Aufruf: http://localhost/geograsim/App/php/regen-waypoints-sql.php
 *
 * Nutzung: nach Updates an Koordinaten/Namen in der DB, damit das Seed-File
 * wieder synchron ist. Keine Destruktivität — überschreibt nur die SQL-Datei.
 */
require_once __DIR__ . '/config/db.php';

header('Content-Type: text/plain; charset=utf-8');

$db = getDB();
$rows = $db->query("SELECT wp_key, name, lat, lon, region, wp_type, info
                    FROM geo_waypoints
                    ORDER BY region, wp_type, name")->fetchAll(PDO::FETCH_ASSOC);

if (!$rows) {
    exit("Keine Waypoints in DB — Abbruch.\n");
}

$esc = fn(?string $s) => $s === null ? 'NULL' : "'" . str_replace("'", "''", $s) . "'";

$sql  = "CREATE TABLE IF NOT EXISTS geo_waypoints (\n";
$sql .= "  id INT UNSIGNED AUTO_INCREMENT PRIMARY KEY,\n";
$sql .= "  wp_key VARCHAR(32) NOT NULL UNIQUE,\n";
$sql .= "  name VARCHAR(100) NOT NULL,\n";
$sql .= "  lat DECIMAL(8,5) NOT NULL,\n";
$sql .= "  lon DECIMAL(8,5) NOT NULL,\n";
$sql .= "  region VARCHAR(32) DEFAULT 'vorarlberg',\n";
$sql .= "  wp_type ENUM('base','city','village','peak','target','pass') DEFAULT 'village',\n";
$sql .= "  info VARCHAR(255),\n";
$sql .= "  updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP\n";
$sql .= ") ENGINE=InnoDB;\n\n";
$sql .= "DELETE FROM geo_waypoints;\n\n";
$sql .= "INSERT INTO geo_waypoints (wp_key, name, lat, lon, region, wp_type, info) VALUES\n";

$lines = [];
foreach ($rows as $r) {
    $lines[] = sprintf(
        "(%s,%s,%s,%s,%s,%s,%s)",
        $esc($r['wp_key']),
        $esc($r['name']),
        $r['lat'],
        $r['lon'],
        $esc($r['region']),
        $esc($r['wp_type']),
        $esc($r['info'])
    );
}
$sql .= implode(",\n", $lines) . ";\n";

$target = __DIR__ . '/../assets/data/waypoints.sql';
$bytes = file_put_contents($target, $sql);

if ($bytes === false) {
    exit("Fehler: Konnte $target nicht schreiben.\n");
}

$count = count($rows);
echo "OK — $count Waypoints nach $target geschrieben ($bytes Bytes).\n";