package edit

import (
	"context"
	"downloadhub/pkg/data"
	"flag"
	"fmt"
	"os"

	"github.com/google/subcommands"
)

type (
	EditCmd struct {
		slug        string
		name        string
		description string
		version     string
		iconURL     string
		out         string
	}
)

func (*EditCmd) Name() string     { return "edit" }
func (*EditCmd) Synopsis() string { return "edit an entry" }
func (*EditCmd) Usage() string {
	return `Usage: ./cli edit [OPTIONS] SLUG

Options:
`
}

func (p *EditCmd) SetFlags(f *flag.FlagSet) {
	f.StringVar(&p.slug, "slug", "", "")
	f.StringVar(&p.name, "name", "", "")
	f.StringVar(&p.description, "description", "", "")
	f.StringVar(&p.version, "version", "0.0.0", "")
	f.StringVar(&p.iconURL, "icon", "", "an url or a path to the icon")
	f.StringVar(&p.out, "out", "./config.json", "path to the configuration file")
}

func (p *EditCmd) Execute(_ context.Context, f *flag.FlagSet, _ ...interface{}) subcommands.ExitStatus {
	if f.NArg() == 0 {
		fmt.Fprintln(os.Stderr, "error: slug cannot be empty")
		return subcommands.ExitUsageError
	}

	if f.NArg() > 1 {
		fmt.Fprintln(os.Stderr, "error: this command cannot take more than 1 argument")
		return subcommands.ExitUsageError
	}

	d, err := data.Load(p.out)
	if err != nil {
		fmt.Fprintln(os.Stderr, "error:", err)
		return subcommands.ExitFailure
	}

	var found bool
	for i, soft := range d.Softwares {
		if soft.Slug == f.Arg(0) {
			if len(p.slug) > 0 {
				soft.Slug = p.slug
			}

			if len(p.name) > 0 {
				soft.Name = p.name
			}

			if len(p.description) > 0 {
				soft.Description = p.description
			}

			if len(p.version) > 0 {
				soft.Version = p.version
			}

			if len(p.iconURL) > 0 {
				soft.IconURL = p.iconURL
			}

			d.Softwares[i] = soft
			found = true
			break
		}
	}

	if !found {
		fmt.Fprintf(os.Stderr, "error: slug '%s' cannot be found\n", f.Arg(0))
		return subcommands.ExitFailure
	}

	if err := data.Save(d, p.out); err != nil {
		fmt.Fprintln(os.Stderr, "error:", err)
		return subcommands.ExitFailure
	}

	return subcommands.ExitSuccess
}