<?php
declare(strict_types=1);
require_once __DIR__ . '/../../src/bootstrap.php';

if (!Auth::user()) {
    json_out(['ok' => false, 'error' => 'unauthorized'], 401);
}

try {
    Database::requireTicketsTable();
} catch (RuntimeException $e) {
    json_out(['ok' => false, 'error' => 'tickets_table_missing', 'hint' => $e->getMessage()], 503);
}

$method = strtoupper($_SERVER['REQUEST_METHOD'] ?? 'GET');

if ($method === 'GET') {
    $ticketId = (int) ($_GET['ticket_id'] ?? 0);
    if ($ticketId <= 0) {
        json_out(['ok' => false, 'error' => 'invalid ticket_id'], 400);
    }
    $ticket = TicketRepository::getById($ticketId);
    if (!$ticket) {
        json_out(['ok' => false, 'error' => 'not found'], 404);
    }
    try {
        json_out(['ok' => true, 'comments' => TicketCommentRepository::listForTicket($ticketId)]);
    } catch (Throwable $e) {
        if (str_contains($e->getMessage(), 'ticket_comments') || str_contains($e->getMessage(), 'no such table')) {
            json_out(['ok' => false, 'error' => 'comments_table_missing', 'hint' => 'Run sql/migrations/004_ticket_workflow.sql'], 503);
        }
        throw $e;
    }
}

if ($method !== 'POST') {
    json_out(['ok' => false, 'error' => 'method not allowed'], 405);
}

$user = Auth::user();
$raw = file_get_contents('php://input');
$data = is_string($raw) && $raw !== '' ? json_decode($raw, true) : $_POST;
if (!is_array($data)) {
    json_out(['ok' => false, 'error' => 'invalid json'], 400);
}

$ticketId = (int) ($data['ticket_id'] ?? 0);
if ($ticketId <= 0) {
    json_out(['ok' => false, 'error' => 'invalid ticket_id'], 400);
}

$ticket = TicketRepository::getById($ticketId);
if (!$ticket) {
    json_out(['ok' => false, 'error' => 'not found'], 404);
}
if (empty($ticket['can_edit']) && !Auth::canEditTags()) {
    json_out(['ok' => false, 'error' => 'forbidden'], 403);
}

try {
    $comment = TicketCommentRepository::add(
        $ticketId,
        (string) ($user['username'] ?? ''),
        (string) ($data['body'] ?? '')
    );
    json_out(['ok' => true, 'comment' => $comment]);
} catch (InvalidArgumentException $e) {
    json_out(['ok' => false, 'error' => $e->getMessage()], 400);
} catch (Throwable $e) {
    if (str_contains($e->getMessage(), 'ticket_comments') || str_contains($e->getMessage(), 'no such table')) {
        json_out(['ok' => false, 'error' => 'comments_table_missing', 'hint' => 'Run sql/migrations/004_ticket_workflow.sql'], 503);
    }
    error_log('ticket_comments: ' . $e->getMessage());
    json_out(['ok' => false, 'error' => 'save failed'], 500);
}