84 lines
2.3 KiB
Dart
84 lines
2.3 KiB
Dart
import 'dart:io';
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import 'package:http/http.dart' as http;
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import 'package:swagger_generator_flutter/core/config.dart';
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import 'package:swagger_generator_flutter/core/exceptions.dart';
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import 'package:swagger_generator_flutter/utils/logger.dart';
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import 'package:swagger_generator_flutter/utils/path_resolver.dart';
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/// Swagger 数据获取器
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/// 负责从本地文件或远程 URL 获取 Swagger 文档内容
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class SwaggerFetcher {
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/// 获取 Swagger 文档内容
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/// [url] 可以是本地文件路径 (file://) 或远程 URL (http://, https://)
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Future<String> fetch(String url) async {
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appLogger.info('🔄 正在获取Swagger JSON文档: $url');
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if (url.startsWith('http://') || url.startsWith('https://')) {
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return _fetchFromUrl(url);
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} else {
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return _fetchFromFile(url);
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}
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}
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/// 从远程 URL 获取
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Future<String> _fetchFromUrl(String url) async {
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try {
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final response = await http.get(
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Uri.parse(url),
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headers: SwaggerConfig.httpHeaders,
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);
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if (response.statusCode == 200) {
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return response.body;
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} else {
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throw SwaggerParseException(
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'HTTP请求失败',
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url: url,
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statusCode: response.statusCode,
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details: 'HTTP响应状态码: ${response.statusCode}',
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);
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}
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} catch (e) {
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if (e is SwaggerParseException) rethrow;
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throw SwaggerParseException(
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'获取远程Swagger文档失败',
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url: url,
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details: e.toString(),
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);
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}
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}
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/// 从本地文件获取
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Future<String> _fetchFromFile(String url) async {
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try {
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// 移除 file:// 前缀（如果有）
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var filePath = url;
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if (filePath.startsWith('file://')) {
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filePath = filePath.substring(7);
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}
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// 使用 PathResolver 解析路径
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final resolvedPath = PathResolver.resolvePath(filePath);
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final file = File(resolvedPath);
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if (!file.existsSync()) {
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throw SwaggerParseException(
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'本地文件不存在',
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url: url,
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details: '文件路径: $resolvedPath',
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);
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}
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return await file.readAsString();
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} catch (e) {
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if (e is SwaggerParseException) rethrow;
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throw SwaggerParseException(
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'读取本地Swagger文件失败',
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url: url,
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details: e.toString(),
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);
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}
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}
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}
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