package cmd

import (
	"encoding/json"
	"fmt"
	"io/ioutil"
	"net/http"

	"go.jolheiser.com/gpm/config"

	"github.com/AlecAivazis/survey/v2"
	"github.com/urfave/cli/v2"
	"go.jolheiser.com/beaver"
)

var Search = cli.Command{
	Name:    "search",
	Aliases: []string{"s"},
	Usage:   "Search packages",
	Flags: []cli.Flag{
		&cli.BoolFlag{
			Name:  "local",
			Usage: "Search locally",
		},
	},
	Action: doSearch,
}

func doSearch(ctx *cli.Context) error {
	cfg, err := config.Load()
	if err != nil {
		return err
	}

	packageMap := cfg.Packages.Map()
	packageSlice := cfg.Packages.Slice()
	if !ctx.Bool("local") {
		export, err := queryExport(ctx.String("url"))
		if err != nil {
			return err
		}
		packageMap = export.Map()
		packageSlice = export.Slice()
	}

	q := &survey.MultiSelect{
		Message: "Select packages",
		Options: packageSlice,
	}

	var a []string
	if err := survey.AskOne(q, &a); err != nil {
		return err
	}

	for _, name := range a {
		pkg, ok := packageMap[name]
		if !ok {
			beaver.Errorf("could not find package for `%s`", name)
			continue
		}
		beaver.Infof("getting `%s`...", name)
		if err := goGet(pkg.Import); err != nil {
			beaver.Error(err)
		}
	}

	return nil
}

func queryExport(server string) (config.Packages, error) {
	resp, err := http.Get(fmt.Sprintf("%s/export", server))
	if err != nil {
		return nil, err
	}

	data, err := ioutil.ReadAll(resp.Body)
	if err != nil {
		return nil, err
	}
	defer resp.Body.Close()

	var importPkgs config.Packages
	if err := json.Unmarshal(data, &importPkgs); err != nil {
		return nil, err
	}

	return importPkgs, nil
}