package authz

import (
	"context"
	"net"
	"strings"
	"testing"

	auth "github.com/envoyproxy/go-control-plane/envoy/service/auth/v3"
	"github.com/stretchr/testify/assert"
	"github.com/stretchr/testify/require"
	"google.golang.org/grpc"
	"google.golang.org/grpc/codes"
	"google.golang.org/grpc/credentials/insecure"
	"google.golang.org/grpc/test/bufconn"
)

func TestServer(t *testing.T) {
	socket := bufconn.Listen(1024 * 1024)
	srv := New(t.Context())

	defer srv.GracefulStop()
	go func() {
		require.NoError(t, srv.Serve(socket))
	}()

	connection, err := grpc.DialContext(
		t.Context(),
		"bufnet",
		grpc.WithContextDialer(func(context.Context, string) (net.Conn, error) {
			return socket.Dial()
		}),
		grpc.WithTransportCredentials(insecure.NewCredentials()),
	)
	require.NoError(t, err)
	defer connection.Close()

	client := auth.NewAuthorizationClient(connection)
	idToken := "eyJ0eXAiOiJKV1QiLCJraWQiOiJ0ZDBTbWRKUTRxUGg1cU5Lek0yNjBDWHgyVWgtd2hHLU1Eam9PS1dmdDhFIiwiYWxnIjoiUlMyNTYifQ.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.TjTrGS5FjfPoY0HWkSLvgjogBxB27jX2beosOZAkwXi_gO3q9DTnL0csOgxjoF1UR8baPNfMFBqL1ipLxBdY9vvDxZve-sOhoSptjzLGkCi7uQKeu7r8wNyFWNWhcLwmbinZyENGSZqIDSkHy0lGdo9oj7qqnH6sYqU46jtWACDGSHTFjNNuo1s_P2SZgkaq4c4v4jdlVV_C_Qlvtl7-eaWV1LzTpB4Mz0VWGsRx1pk3-KnS24crhBjxSE383z4Nar4ZhrsrTK-bOj33l6U32gRKNb4g6GxrPXaRQ268n37spQmbQn0aDwmUOABv-aBRy203bCCZca8BJ0XBur8t6w"
	accessToken := "f88f60df11e458b594c80b299aee05f8e5805c65c3e779cc6fbc606c4ac36227"
	refreshToken := "0847d325d6e4f021c4baaae0ddb425dbd8795807a4751cd2131bec8e8a9aee24"

	cookies := []string{
		"bearer_token=" + accessToken + ";",
		"id_token=" + idToken + ";",
		"refresh_token=" + refreshToken,
	}
	loggedInHeaders := map[string]string{"cookie": strings.Join(cookies, "; ")}

	t.Run("CheckRequest", func(t *testing.T) {
		tt := []struct {
			http   *auth.AttributeContext_HttpRequest
			status codes.Code
		}{
			{status: codes.OK, http: &auth.AttributeContext_HttpRequest{Method: "GET", Path: "/"}},
			{status: codes.OK, http: &auth.AttributeContext_HttpRequest{Method: "GET", Path: "/application.js"}},
			{status: codes.OK, http: &auth.AttributeContext_HttpRequest{Method: "GET", Path: "/callback"}},
			{status: codes.OK, http: &auth.AttributeContext_HttpRequest{Method: "GET", Path: "/dashboard", Headers: loggedInHeaders}},
			{status: codes.OK, http: &auth.AttributeContext_HttpRequest{Method: "GET", Path: "/dashboard/nav"}},
			{status: codes.OK, http: &auth.AttributeContext_HttpRequest{Method: "GET", Path: "/favicon.ico"}},
			{status: codes.OK, http: &auth.AttributeContext_HttpRequest{Method: "GET", Path: "/favicon.png"}},
			{status: codes.OK, http: &auth.AttributeContext_HttpRequest{Method: "GET", Path: "/health"}},
			{status: codes.OK, http: &auth.AttributeContext_HttpRequest{Method: "GET", Path: "/index.html"}},
			{status: codes.OK, http: &auth.AttributeContext_HttpRequest{Method: "GET", Path: "/logo.png"}},
			{status: codes.OK, http: &auth.AttributeContext_HttpRequest{Method: "GET", Path: "/signout"}},
			{status: codes.OK, http: &auth.AttributeContext_HttpRequest{Method: "GET", Path: "/sparkles"}},
			{status: codes.OK, http: &auth.AttributeContext_HttpRequest{Method: "POST", Path: "/sparkles/restore"}},
			{status: codes.PermissionDenied, http: &auth.AttributeContext_HttpRequest{Method: "GET", Path: "/dashboard"}},
			{status: codes.PermissionDenied, http: &auth.AttributeContext_HttpRequest{Method: "POST", Path: "/sparkles"}},
		}

		for _, example := range tt {
			t.Run(example.http.Path, func(t *testing.T) {
				response, err := client.Check(t.Context(), &auth.CheckRequest{
					Attributes: &auth.AttributeContext{
						Request: &auth.AttributeContext_Request{
							Http: example.http,
						},
					},
				})
				require.NoError(t, err)
				assert.Equal(t, int32(example.status), response.Status.Code)
			})
		}
	})
}