使用了AI重构项目，并完善了一部分后台问题

internal/analytics/umami_test.go

@@ -0,0 +1,56 @@
+package analytics
+
+import (
+	"context"
+	"net/http"
+	"net/http/httptest"
+	"strings"
+	"testing"
+	"time"
+)
+
+func TestSelfHostedStatsAndPageviews(t *testing.T) {
+	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		if r.Header.Get("Authorization") != "Bearer self-secret" {
+			t.Errorf("missing self-hosted auth header: %q", r.Header.Get("Authorization"))
+		}
+		if strings.HasSuffix(r.URL.Path, "/pageviews") && r.URL.Query().Get("unit") != "day" {
+			t.Errorf("missing pageviews unit: %q", r.URL.RawQuery)
+		}
+		w.Header().Set("Content-Type", "application/json")
+		if strings.HasSuffix(r.URL.Path, "/pageviews") {
+			_, _ = w.Write([]byte(`{"pageviews":[{"x":"8/5","y":4}]}`))
+			return
+		}
+		_, _ = w.Write([]byte(`{"pageviews":{"value":12},"visitors":3,"visits":5,"bounces":1,"totaltime":90}`))
+	}))
+	defer server.Close()
+
+	client := NewClient()
+	cfg := Config{Mode: "selfhost", APIURL: server.URL, Credential: "self-secret", WebsiteID: "website"}
+	stats, err := client.GetStats(context.Background(), cfg, time.Unix(0, 0), time.Now())
+	if err != nil || stats.Pageviews != 12 || stats.Visitors != 3 {
+		t.Fatalf("unexpected stats: %+v, %v", stats, err)
+	}
+	points, err := client.GetPageviews(context.Background(), cfg, time.Now().Add(-24*time.Hour), time.Now())
+	if err != nil || len(points) != 1 || points[0].Y != 4 {
+		t.Fatalf("unexpected pageviews: %+v, %v", points, err)
+	}
+}
+
+func TestCloudUsesAPIKey(t *testing.T) {
+	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		if r.Header.Get("x-umami-api-key") != "cloud-secret" || r.Header.Get("Authorization") != "" {
+			t.Errorf("unexpected cloud auth headers: api-key=%q authorization=%q", r.Header.Get("x-umami-api-key"), r.Header.Get("Authorization"))
+		}
+		w.Header().Set("Content-Type", "application/json")
+		_, _ = w.Write([]byte(`{"visitors":1}`))
+	}))
+	defer server.Close()
+
+	client := NewClient()
+	_, err := client.GetStats(context.Background(), Config{Mode: "cloud", APIURL: server.URL + "/v1", Credential: "cloud-secret", WebsiteID: "website"}, time.Time{}, time.Time{})
+	if err != nil {
+		t.Fatal(err)
+	}
+}