package flag

import (
	"encoding/json"

	proxyFlag "forge.cadoles.com/cadoles/bouncer/internal/command/admin/proxy/flag"
	"forge.cadoles.com/cadoles/bouncer/internal/store"
	"github.com/pkg/errors"
	"github.com/urfave/cli/v2"
)

const (
	FlagLayerName    = "layer-name"
	FlagLayerType    = "layer-type"
	FlagLayerOptions = "layer-options"
)

func WithLayerFlags(flags ...cli.Flag) []cli.Flag {
	baseFlags := proxyFlag.WithProxyFlags(
		&cli.StringFlag{
			Name:     FlagLayerName,
			Usage:    "use `LAYER_NAME` as targeted layer",
			Value:    "",
			Required: true,
		},
	)

	flags = append(flags, baseFlags...)

	return flags
}

func WithLayerCreateFlags(flags ...cli.Flag) []cli.Flag {
	return WithLayerFlags(
		&cli.StringFlag{
			Name:     FlagLayerType,
			Usage:    "Set `LAYER_TYPE` as layer's type",
			Value:    "",
			Required: true,
		},
		&cli.StringFlag{
			Name:  FlagLayerOptions,
			Usage: "Set `LAYER_OPTIONS` as layer's options",
			Value: "{}",
		},
	)
}

func AssertLayerName(ctx *cli.Context) (store.LayerName, error) {
	rawLayerName := ctx.String(FlagLayerName)

	name, err := store.ValidateName(rawLayerName)
	if err != nil {
		return "", errors.WithStack(err)
	}

	return store.LayerName(name), nil
}

func AssertLayerType(ctx *cli.Context) (store.LayerType, error) {
	rawLayerType := ctx.String(FlagLayerType)

	return store.LayerType(rawLayerType), nil
}

func AssertLayerOptions(ctx *cli.Context) (store.LayerOptions, error) {
	rawLayerOptions := ctx.String(FlagLayerOptions)

	layerOptions := store.LayerOptions{}

	if err := json.Unmarshal([]byte(rawLayerOptions), &layerOptions); err != nil {
		return nil, errors.WithStack(err)
	}

	return layerOptions, nil
}