package applyconfig

import (
	"os"

	"github.com/rs/zerolog"
	"github.com/rs/zerolog/log"
	"github.com/spf13/cobra"

	"novit.tech/direktil/pkg/config"
	"novit.tech/direktil/pkg/config/apply"
)

var (
	filters    []string
	pathPrefix string
)

func Command() (c *cobra.Command) {
	c = &cobra.Command{
		Use:   "apply-config <config.yaml>",
		Short: "apply a config to the current system",
		Args:  cobra.ExactArgs(1),

		Run: run,
	}

	flag := c.Flags()
	flag.StringArrayVarP(&filters, "filter", "F", []string{}, "glob filter to select files to apply")
	flag.StringVarP(&pathPrefix, "prefix", "P", "", "path prefix")

	return c
}

func run(_ *cobra.Command, args []string) {
	log.Logger = log.Output(zerolog.ConsoleWriter{Out: os.Stderr})

	configPath := args[0]

	var (
		cfg *config.Config
		err error
	)

	if configPath == "-" {
		log.Info().Str("from", "stdin").Msg("loading config")
		cfg, err = config.Read(os.Stdin)

	} else {
		log.Info().Str("from", configPath).Msg("loading config")
		cfg, err = config.Load(configPath)
	}

	if err != nil {
		log.Fatal().Err(err).Msg("failed to load config")
	}

	if err = apply.Files(cfg, pathPrefix, filters...); err != nil {
		log.Fatal().Err(err).Msg("failed to apply files")
	}
}