package service

import (
	"context"
	"encoding/json"
	"net/http"
	"net/http/httptest"
	"testing"
	"time"

	"github.com/imroc/req/v3"
	"github.com/stretchr/testify/require"
)

func TestFetchChatGPTSubscriptionExpiresAt(t *testing.T) {
	const wantExpiresAt = "2026-06-10T02:52:15Z"

	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		require.Equal(t, "/backend-api/subscriptions", r.URL.Path)
		require.Equal(t, "acc_123", r.URL.Query().Get("account_id"))
		require.Equal(t, "Bearer access-token", r.Header.Get("Authorization"))

		w.Header().Set("Content-Type", "application/json")
		_ = json.NewEncoder(w).Encode(map[string]any{
			"plan_type":    "plus",
			"active_until": wantExpiresAt,
			"will_renew":   true,
			"id":           "sub_123",
		})
	}))
	defer server.Close()

	oldURL := chatGPTSubscriptionsURL
	chatGPTSubscriptionsURL = server.URL + "/backend-api/subscriptions"
	t.Cleanup(func() { chatGPTSubscriptionsURL = oldURL })

	got := fetchChatGPTSubscriptionExpiresAt(context.Background(), func(proxyURL string) (*req.Client, error) {
		return req.C().SetTimeout(5 * time.Second), nil
	}, "access-token", "", "acc_123")

	require.Equal(t, wantExpiresAt, got)
}