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package cmd

import (
	"bytes"
	"io"
	"os"

	"filippo.io/age"
	"github.com/urfave/cli/v2"
)

var TextConv = &cli.Command{
	Name:        "textconv",
	Aliases:     []string{"t"},
	Description: "Git textconv",
	Hidden:      true,
	Flags: []cli.Flag{
		&cli.StringFlag{
			Name:    "file",
			Usage:   "File being worked on",
			Aliases: []string{"f"},
		},
	},
	Action: actionTextConv,
}

func actionTextConv(ctx *cli.Context) error {
	identities, err := ageIdentities()
	if err != nil {
		return err
	}

	fi, err := os.Open(ctx.Args().First())
	if err != nil {
		return err
	}
	defer fi.Close()
	contents, err := io.ReadAll(fi)
	if err != nil {
		return err
	}

	r, err := age.Decrypt(bytes.NewReader(contents), identities...)
	if err != nil {
		// TODO debug print err
		if _, cerr := io.Copy(os.Stdout, bytes.NewReader(contents)); cerr != nil {
			return err
		}
		return nil
	}

	if _, err := io.Copy(os.Stdout, r); err != nil {
		return err
	}
	return nil
}