package cmd

import (
	"code.gitea.io/sdk/gitea"
	"errors"
	"fmt"
	"gitea.com/jolheiser/tea/modules/config"
	"gitea.com/jolheiser/tea/modules/git"
	"github.com/AlecAivazis/survey/v2"
	"github.com/urfave/cli/v2"
	"strings"
	"sync"
)

var (
	Flags = []cli.Flag{
		&cli.StringFlag{
			Name:    "origin",
			Usage:   "The origin remote",
			Value:   config.Origin,
		},
		&cli.StringFlag{
			Name:    "upstream",
			Usage:   "The upstream remote",
			Value:   config.Upstream,
		},
		&cli.StringFlag{
			Name:    "url",
			Aliases: []string{"u"},
			Usage:   "The base URL to the Gitea instance",
			Value:   getUpstreamRepo()[0],
		},
		&cli.StringFlag{
			Name:    "owner",
			Aliases: []string{"o"},
			Usage:   "The owner to target",
			Value:   getUpstreamRepo()[1],
		},
		&cli.StringFlag{
			Name:    "repo",
			Aliases: []string{"r"},
			Usage:   "The repo to target",
			Value:   getUpstreamRepo()[2],
		},
		&cli.StringFlag{
			Name:    "login",
			Aliases: []string{"l"},
			Usage:   "The login token to use (by name)",
		},
	}
	originOnce   sync.Once
	originRepo   []string
	upstreamOnce sync.Once
	upstreamRepo []string
)

func requireToken(ctx *cli.Context) (string, error) {
	if ctx.IsSet("login") {
		return getToken(ctx.String("login")), nil
	}
	loginMap := make(map[string]config.Login)
	opts := make([]string, len(config.Logins))
	for idx, login := range config.Logins {
		key := fmt.Sprintf("%s (%s)", login.Name, login.URL)
		loginMap[key] = login
		opts[idx] = key
	}

	question := &survey.Select{Message: "This action requires a login token", Options: opts}
	var answer string

	if err := survey.AskOne(question, &answer); err != nil {
		return "", err
	}

	return loginMap[answer].Token, nil
}

func getToken(name string) string {
	for _, login := range config.Logins {
		if name == login.Name {
			return login.Token
		}
	}
	return ""
}

func getClient(ctx *cli.Context) *gitea.Client {
	return gitea.NewClient(ctx.String("url"), getToken(ctx.String("login")))
}

func getUpstreamRepo() []string {
	upstreamOnce.Do(func() {
		upstreamRepo = git.GetRepo(config.Upstream)
		if upstreamRepo == nil {
			upstreamRepo = git.GetRepo(config.Origin)
		}
	})
	return upstreamRepo
}

func getOriginRepo() []string {
	originOnce.Do(func() {
		originRepo = git.GetRepo(config.Origin)
	})
	return originRepo
}

func fullName(ctx *cli.Context) string {
	return ctx.String("owner") + "/" + ctx.String("repo")
}

func validateFullName(ans interface{}) error {
	fullName := ans.(string)
	ownerRepo := strings.Split(fullName, "/")
	if len(ownerRepo) != 2 {
		return errors.New("full repo name should be in form `owner/repo`")
	}
	return nil
}