feat: Prism HTTP/SOCKS5 代理网关及管理台

Co-authored-by: Cursor <cursoragent@cursor.com>

internal/mihomoapi/traffic.go

@@ -0,0 +1,42 @@
+package mihomoapi
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"net/http"
+	"time"
+)
+
+type TrafficRates struct {
+	Up        int64 `json:"up"`
+	Down      int64 `json:"down"`
+	UpTotal   int64 `json:"upTotal"`
+	DownTotal int64 `json:"downTotal"`
+}
+
+// TrafficRates reads the first frame from Mihomo's streaming /traffic endpoint.
+func (c *Client) TrafficRates(ctx context.Context) (TrafficRates, error) {
+	var zero TrafficRates
+	req, err := http.NewRequestWithContext(ctx, http.MethodGet, c.base+"/traffic", nil)
+	if err != nil {
+		return zero, err
+	}
+	if c.secret != "" {
+		req.Header.Set("Authorization", "Bearer "+c.secret)
+	}
+	client := &http.Client{Timeout: 5 * time.Second}
+	resp, err := client.Do(req)
+	if err != nil {
+		return zero, err
+	}
+	defer resp.Body.Close()
+	if resp.StatusCode >= 400 {
+		return zero, fmt.Errorf("mihomo api %d", resp.StatusCode)
+	}
+	var rates TrafficRates
+	if err := json.NewDecoder(resp.Body).Decode(&rates); err != nil {
+		return zero, err
+	}
+	return rates, nil
+}