68 lines
1.6 KiB
Go
68 lines
1.6 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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"net/url"
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"time"
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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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type claudeUsageService struct {
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usageURL string
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}
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func NewClaudeUsageFetcher() service.ClaudeUsageFetcher {
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return &claudeUsageService{usageURL: defaultClaudeUsageURL}
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}
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func (s *claudeUsageService) FetchUsage(ctx context.Context, accessToken, proxyURL string) (*service.ClaudeUsageResponse, error) {
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transport, ok := http.DefaultTransport.(*http.Transport)
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if !ok {
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return nil, fmt.Errorf("failed to get default transport")
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}
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transport = transport.Clone()
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if proxyURL != "" {
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if parsedURL, err := url.Parse(proxyURL); err == nil {
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transport.Proxy = http.ProxyURL(parsedURL)
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}
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}
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client := &http.Client{
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Transport: transport,
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Timeout: 30 * time.Second,
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}
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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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req.Header.Set("Authorization", "Bearer "+accessToken)
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req.Header.Set("anthropic-beta", "oauth-2025-04-20")
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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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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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