package layer

import (
	"encoding/json"
	"os"

	"forge.cadoles.com/cadoles/bouncer/internal/client"
	"forge.cadoles.com/cadoles/bouncer/internal/command/admin/apierr"
	clientFlag "forge.cadoles.com/cadoles/bouncer/internal/command/admin/flag"
	"forge.cadoles.com/cadoles/bouncer/internal/command/admin/layer/flag"
	layerFlag "forge.cadoles.com/cadoles/bouncer/internal/command/admin/layer/flag"
	proxyFlag "forge.cadoles.com/cadoles/bouncer/internal/command/admin/proxy/flag"
	"forge.cadoles.com/cadoles/bouncer/internal/format"
	"forge.cadoles.com/cadoles/bouncer/internal/store"
	"github.com/pkg/errors"
	"github.com/urfave/cli/v2"
)

func UpdateCommand() *cli.Command {
	return &cli.Command{
		Name:  "update",
		Usage: "Update layer",
		Flags: layerFlag.WithLayerFlags(
			flag.LayerEnabled(),
			flag.LayerWeight(),
			flag.LayerOptions(),
		),
		Action: func(ctx *cli.Context) error {
			baseFlags := clientFlag.GetBaseFlags(ctx)

			token, err := clientFlag.GetToken(baseFlags)
			if err != nil {
				return errors.WithStack(apierr.Wrap(err))
			}

			proxyName, err := proxyFlag.AssertProxyName(ctx)
			if err != nil {
				return errors.WithStack(err)
			}

			layerName, err := layerFlag.AssertLayerName(ctx)
			if err != nil {
				return errors.WithStack(err)
			}

			opts := &client.UpdateLayerOptions{}

			if ctx.IsSet(flag.KeyLayerOptions) {
				var options store.LayerOptions
				if err := json.Unmarshal([]byte(ctx.String(flag.KeyLayerOptions)), &options); err != nil {
					return errors.Wrap(err, "could not parse layer's options")
				}

				opts.Options = &options
			}

			if ctx.IsSet(flag.KeyLayerWeight) {
				weight := ctx.Int(flag.KeyLayerWeight)
				opts.Weight = &weight
			}

			if ctx.IsSet(flag.KeyLayerEnabled) {
				enabled := ctx.Bool(flag.KeyLayerEnabled)
				opts.Enabled = &enabled
			}

			client := client.New(baseFlags.ServerURL, client.WithToken(token))

			proxy, err := client.UpdateLayer(ctx.Context, proxyName, layerName, opts)
			if err != nil {
				return errors.WithStack(apierr.Wrap(err))
			}

			hints := layerHints(baseFlags.OutputMode)

			if err := format.Write(baseFlags.Format, os.Stdout, hints, proxy); err != nil {
				return errors.WithStack(err)
			}

			return nil
		},
	}
}