package codersdk_test

import (
	"net/url"
	"testing"

	"github.com/stretchr/testify/require"
	"tailscale.com/tailcfg"

	"github.com/coder/coder/v2/codersdk/agentsdk"
)

func TestWorkspaceRewriteDERPMap(t *testing.T) {
	t.Parallel()
	// This test ensures that RewriteDERPMap mutates built-in DERPs with the
	// client access URL.
	dm := &tailcfg.DERPMap{
		Regions: map[int]*tailcfg.DERPRegion{
			1: {
				EmbeddedRelay: true,
				RegionID:      1,
				Nodes: []*tailcfg.DERPNode{{
					HostName: "bananas.org",
					DERPPort: 1,
				}},
			},
		},
	}
	parsed, err := url.Parse("https://coconuts.org:44558")
	require.NoError(t, err)
	client := agentsdk.New(parsed)
	client.RewriteDERPMap(dm)
	region := dm.Regions[1]
	require.True(t, region.EmbeddedRelay)
	require.Len(t, region.Nodes, 1)
	node := region.Nodes[0]
	require.Equal(t, "coconuts.org", node.HostName)
	require.Equal(t, 44558, node.DERPPort)
}