<?php
require_once __DIR__ . '/../helpers.php';
runAuth();

$data = readJsonBody();
$bizId = (int) ($data['BusinessID'] ?? 0);
$stationId = (int) ($data['StationID'] ?? 0);
$name = trim($data['Name'] ?? '');
$color = trim($data['Color'] ?? '#666666');

if ($bizId <= 0) {
    apiAbort(['OK' => false, 'ERROR' => 'missing_businessid', 'MESSAGE' => 'BusinessID is required.']);
}
if ($name === '') {
    apiAbort(['OK' => false, 'ERROR' => 'missing_name', 'MESSAGE' => 'Station name is required.']);
}

try {
    if ($stationId > 0) {
        queryTimed("UPDATE Stations SET Name = ?, Color = ? WHERE ID = ? AND BusinessID = ?",
            [$name, $color, $stationId, $bizId]);
    } else {
        queryTimed("
            INSERT INTO Stations (BusinessID, Name, Color, SortOrder, IsActive, AddedOn)
            VALUES (?, ?, ?,
                (SELECT COALESCE(MAX(s2.SortOrder), 0) + 1 FROM Stations s2 WHERE s2.BusinessID = ?),
                1, NOW())
        ", [$bizId, $name, $color, $bizId]);
        $stationId = (int) lastInsertId();
    }

    $q = queryOne("SELECT ID, BusinessID, Name, Color, SortOrder FROM Stations WHERE ID = ?", [$stationId]);

    if (!$q) {
        apiAbort(['OK' => false, 'ERROR' => 'not_found', 'MESSAGE' => 'Station not found after save.']);
    }

    jsonResponse([
        'OK' => true,
        'ERROR' => '',
        'STATION' => [
            'StationID' => (int) $q['ID'],
            'Name' => $q['Name'],
            'Color' => $q['Color'],
            'SortOrder' => (int) $q['SortOrder'],
        ],
    ]);

} catch (Exception $e) {
    jsonResponse(['OK' => false, 'ERROR' => 'server_error', 'MESSAGE' => 'Failed to save station', 'DETAIL' => $e->getMessage()]);
}