package upstreamimpl

import (
	"context"
	"net/http"
	"net/http/httptest"
	"testing"
	"time"
)

func TestLanShangTokenProviderFetch(t *testing.T) {
	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		if r.URL.Path != "/get_token" {
			t.Fatalf("path = %q", r.URL.Path)
		}
		if got := r.URL.Query().Get("sub_account"); got != "\u66fc\u76db\u7269\u8054\u7f51" {
			t.Fatalf("sub_account = %q", got)
		}
		if got := r.URL.Query().Get("secret"); got != "Qw@0371252" {
			t.Fatalf("secret = %q", got)
		}
		w.Header().Set("Content-Type", "application/json")
		_, _ = w.Write([]byte(`{"token":"abc123","expire_in":120}`))
	}))
	defer server.Close()

	provider := NewLanShangTokenProvider(LanShangTokenConfig{
		BaseURL: server.URL, Path: "/get_token", SubAccount: "\u66fc\u76db\u7269\u8054\u7f51",
		Secret: "Qw@0371252", Timeout: time.Second,
	})
	token, err := provider.Fetch(context.Background())
	if err != nil {
		t.Fatal(err)
	}
	if token.Value != "abc123" {
		t.Fatalf("token = %q", token.Value)
	}
	if token.ExpiresAt.Before(time.Now().Add(100 * time.Second)) {
		t.Fatalf("expiry too short: %s", token.ExpiresAt)
	}
}

func TestLanShangTokenProviderRejectsEmptyToken(t *testing.T) {
	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		_, _ = w.Write([]byte(`{"expire_in":120}`))
	}))
	defer server.Close()

	provider := NewLanShangTokenProvider(LanShangTokenConfig{
		BaseURL: server.URL, SubAccount: "a", Secret: "b", Timeout: time.Second,
	})
	if _, err := provider.Fetch(context.Background()); err == nil {
		t.Fatal("expected empty token error")
	}
}