package config

import (
	"fmt"
	"github.com/AlecAivazis/survey/v2"
	"github.com/BurntSushi/toml"
	"github.com/mitchellh/go-homedir"
	"go.jolheiser.com/beaver"
	"os"
	"path"
	"strings"
)

var (
	configPath string
	cfg        *Config
	Version    = "develop"

	// Config items

	Domain   string
	Packages []Package
)

type Config struct {
	Domain   string    `toml:"domain"`
	Packages []Package `toml:"package" json:"packages"`
}

type Package struct {
	Name        string `toml:"name"`
	Path        string `toml:"path"`
	Repo        string `toml:"repo"`
	SSH         string `toml:"ssh"`
	Description string `toml:"description"`
}

func (pkg Package) Module() string {
	return fmt.Sprintf("%s/%s", Domain, pkg.Path)
}

// Load on init so that CLI contexts are correctly populated
func init() {
	home, err := homedir.Dir()
	if err != nil {
		beaver.Fatalf("could not locate home directory: %v", err)
	}
	configPath = fmt.Sprintf("%s/.vanity/config.toml", home)

	if _, err := os.Stat(configPath); os.IsNotExist(err) {
		if err := os.MkdirAll(path.Dir(configPath), os.ModePerm); err != nil {
			beaver.Fatalf("could not create vanity home: %v", err)
		}

		if _, err := os.Create(configPath); err != nil {
			beaver.Fatalf("could not create vanity config: %v", err)
		}
	}

	if _, err := toml.DecodeFile(configPath, &cfg); err != nil {
		beaver.Fatalf("could not decode vanity config: %v", err)
	}

	dupe := make(map[string]bool)
	for _, pkg := range cfg.Packages {
		name := strings.ToLower(pkg.Name)
		if ok := dupe[name]; ok {
			beaver.Fatalf("duplicate package for %s", pkg.Name)
		}
		dupe[name] = true
	}

	Domain = cfg.Domain
	Packages = cfg.Packages
}

func Save() error {
	cfg.Domain = Domain
	cfg.Packages = Packages

	fi, err := os.Create(configPath)
	if err != nil {
		return err
	}
	defer fi.Close()

	if err := toml.NewEncoder(fi).Encode(cfg); err != nil {
		return err
	}

	return nil
}

func PackageMap() map[string]Package {
	pkgs := make(map[string]Package)
	for _, pkg := range Packages {
		pkgs[pkg.Path] = pkg
	}
	return pkgs
}

func AddPackages(force bool, pkgs ...Package) {
	for _, pkg := range pkgs {
		for idx, p := range Packages {
			if strings.EqualFold(p.Name, pkg.Name) {
				if force {
					Packages[idx] = pkg
					break
				}

				forceQuestion := &survey.Confirm{
					Message: fmt.Sprintf("Package `%s` (%s) already exists. Overwrite with `%s`?", p.Name, p.Repo, p.Repo),
					Default: false,
				}
				var forceAnswer bool

				if err := survey.AskOne(forceQuestion, &forceAnswer); err != nil {
					beaver.Error(err)
					break
				}

				if !forceAnswer {
					beaver.Errorf("leaving package `%s` as-is", pkg.Name)
					break
				}

				Packages[idx] = pkg
				break
			}
		}
		Packages = append(Packages, pkg)
	}
}