<?php
declare(strict_types=1);

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

try {
	if (session_status() === PHP_SESSION_NONE) {
		session_start();
	}

	require_once __DIR__ . '/../db_conn.php';
	$pdo = db_conn();

	$payload = [];
	$rawBody = file_get_contents('php://input');
	if (is_string($rawBody) && $rawBody !== '') {
		$decoded = json_decode($rawBody, true);
		if (is_array($decoded)) {
			$payload = $decoded;
		}
	}

	// id 또는 comment_id 파라미터 지원
	$commentIdRaw = $payload['id'] ?? $payload['comment_id'] ?? $_POST['id'] ?? $_POST['comment_id'] ?? null;
	$commentId = is_numeric($commentIdRaw) ? (int)$commentIdRaw : 0;
	if ($commentId <= 0) {
		echo json_encode([
			'success' => false,
			'message' => '삭제할 댓글 ID가 올바르지 않습니다.',
		], JSON_UNESCAPED_UNICODE);
		exit;
	}

	$memberId    = (string)($_SESSION['member_id'] ?? '');
	$sysCompCode = (string)($_SESSION['sys_comp_code'] ?? '');

	if ($memberId === '') {
		http_response_code(401);
		echo json_encode(['success' => false, 'message' => 'not_logged_in'], JSON_UNESCAPED_UNICODE);
		exit;
	}

	if ($sysCompCode === '') {
		http_response_code(401);
		echo json_encode(['success' => false, 'message' => 'sys_comp_code_missing'], JSON_UNESCAPED_UNICODE);
		exit;
	}

	// edu_comments 테이블에서 DELETE (본인 댓글만)
	$stmt = $pdo->prepare(
		'DELETE FROM edu_comments WHERE id = ? AND member_id = ? AND sys_comp_code = ?'
	);
	$stmt->execute([$commentId, $memberId, $sysCompCode]);

	if ($stmt->rowCount() === 0) {
		echo json_encode([
			'success' => false,
			'message' => '삭제할 댓글이 없거나 권한이 없습니다.',
		], JSON_UNESCAPED_UNICODE);
		exit;
	}

	echo json_encode([
		'success' => true,
		'data' => ['id' => $commentId],
	], JSON_UNESCAPED_UNICODE);
} catch (Throwable $e) {
	http_response_code(500);
	echo json_encode([
		'success' => false,
		'message' => 'server_error',
	], JSON_UNESCAPED_UNICODE);
}