package permissions

import (
	"fmt"
	"net/url"

	"github.com/spf13/pflag"
	"github.com/spf13/viper"
	"go.infratographer.com/x/viperx"
)

// Config provides configuration for connecting to the Equinix Metal API provider.
type Config struct {
	// BaseURL is the baseurl to use when connecting to the Equinix Metal API Provider.
	BaseURL string

	// BearerToken is the token to interact with the Equinix Metal API
	BearerToken string
}

// MustViperFlags registers command flags along with the viper bindings.
func MustViperFlags(v *viper.Viper, flags *pflag.FlagSet) {
	flags.String("permissions-baseurl", "", "permissions base url")
	viperx.MustBindFlag(v, "permissions.baseurl", flags.Lookup("permissions-baseurl"))

	flags.String("permissions-token", "", "permissions bearer url")
	viperx.MustBindFlag(v, "permissions.bearertoken", flags.Lookup("permissions-token"))
}

// WithConfig applies all configurations defined in the config.
func WithConfig(config Config) Option {
	return func(c *client) error {
		var options []Option

		if config.BaseURL != "" {
			options = append(options, WithBaseURL(config.BaseURL))
		}

		if config.BearerToken != "" {
			options = append(options, WithBearerToken(config.BearerToken))
		}

		for _, opt := range options {
			if err := opt(c); err != nil {
				return err
			}
		}

		return nil
	}
}

// WithBaseURL updates the baseurl used by the client.
func WithBaseURL(baseURL string) Option {
	return func(c *client) error {
		u, err := url.Parse(baseURL)
		if err != nil {
			return fmt.Errorf("failed to parse emapi base url %s: %w", baseURL, err)
		}

		c.baseURL = u

		return nil
	}
}

// WithBearerToken sets the bearer token to authenticate the request with.
func WithBearerToken(token string) Option {
	return func(c *client) error {
		c.token = token

		return nil
	}
}