108 lines
3.4 KiB
Go
108 lines
3.4 KiB
Go
package repository
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import (
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"context"
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"encoding/json"
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"fmt"
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"io"
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"net/http"
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"time"
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"github.com/Wei-Shaw/sub2api/internal/pkg/httpclient"
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"github.com/Wei-Shaw/sub2api/internal/service"
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)
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const defaultClaudeUsageURL = "https://api.anthropic.com/api/oauth/usage"
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// 默认 User-Agent，与用户抓包的请求一致
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const defaultUsageUserAgent = "claude-code/2.1.7"
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type claudeUsageService struct {
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usageURL string
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allowPrivateHosts bool
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httpUpstream service.HTTPUpstream
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}
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// NewClaudeUsageFetcher 创建 Claude 用量获取服务
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// httpUpstream: 可选，如果提供则支持 TLS 指纹伪装
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func NewClaudeUsageFetcher(httpUpstream service.HTTPUpstream) service.ClaudeUsageFetcher {
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return &claudeUsageService{
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usageURL: defaultClaudeUsageURL,
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httpUpstream: httpUpstream,
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}
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}
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// FetchUsage 简单版本，不支持 TLS 指纹（向后兼容）
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func (s *claudeUsageService) FetchUsage(ctx context.Context, accessToken, proxyURL string) (*service.ClaudeUsageResponse, error) {
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return s.FetchUsageWithOptions(ctx, &service.ClaudeUsageFetchOptions{
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AccessToken: accessToken,
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ProxyURL: proxyURL,
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})
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}
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// FetchUsageWithOptions 完整版本，支持 TLS 指纹和自定义 User-Agent
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func (s *claudeUsageService) FetchUsageWithOptions(ctx context.Context, opts *service.ClaudeUsageFetchOptions) (*service.ClaudeUsageResponse, error) {
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if opts == nil {
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return nil, fmt.Errorf("options is nil")
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}
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// 创建请求
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req, err := http.NewRequestWithContext(ctx, "GET", s.usageURL, nil)
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if err != nil {
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return nil, fmt.Errorf("create request failed: %w", err)
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}
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// 设置请求头（与抓包一致，但不设置 Accept-Encoding，让 Go 自动处理压缩）
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req.Header.Set("Accept", "application/json, text/plain, */*")
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req.Header.Set("Content-Type", "application/json")
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req.Header.Set("Authorization", "Bearer "+opts.AccessToken)
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req.Header.Set("anthropic-beta", "oauth-2025-04-20")
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// 设置 User-Agent（优先使用缓存的 Fingerprint，否则使用默认值）
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userAgent := defaultUsageUserAgent
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if opts.Fingerprint != nil && opts.Fingerprint.UserAgent != "" {
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userAgent = opts.Fingerprint.UserAgent
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}
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req.Header.Set("User-Agent", userAgent)
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var resp *http.Response
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// 如果启用 TLS 指纹且有 HTTPUpstream，使用 DoWithTLS
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if opts.EnableTLSFingerprint && s.httpUpstream != nil {
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// accountConcurrency 传 0 使用默认连接池配置，usage 请求不需要特殊的并发设置
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resp, err = s.httpUpstream.DoWithTLS(req, opts.ProxyURL, opts.AccountID, 0, true)
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if err != nil {
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return nil, fmt.Errorf("request with TLS fingerprint failed: %w", err)
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}
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} else {
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// 不启用 TLS 指纹，使用普通 HTTP 客户端
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client, err := httpclient.GetClient(httpclient.Options{
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ProxyURL: opts.ProxyURL,
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Timeout: 30 * time.Second,
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ValidateResolvedIP: true,
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AllowPrivateHosts: s.allowPrivateHosts,
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})
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if err != nil {
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client = &http.Client{Timeout: 30 * time.Second}
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}
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resp, err = client.Do(req)
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if err != nil {
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return nil, fmt.Errorf("request failed: %w", err)
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}
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}
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defer func() { _ = resp.Body.Close() }()
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if resp.StatusCode != http.StatusOK {
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body, _ := io.ReadAll(resp.Body)
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return nil, fmt.Errorf("API returned status %d: %s", resp.StatusCode, string(body))
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}
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var usageResp service.ClaudeUsageResponse
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if err := json.NewDecoder(resp.Body).Decode(&usageResp); err != nil {
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return nil, fmt.Errorf("decode response failed: %w", err)
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}
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return &usageResp, nil
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}
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