package app

import (
	"errors"
	"fmt"
	"os"
	"regexp"
	"strings"

	"cnb.cool/cnb/go-cnb/cnb"
	"cnb.cool/looc/git-cnb/git"
	"cnb.cool/looc/git-cnb/ui"
)

var Client *cnb.Client
var Repo string

func init() {

	gitRemoteURL, err := git.Remote()
	if err != nil {
		ui.ErrorWithExit(err.Error())
	}
	scheme, domain, repo, err := parseGitRemoteUrl(gitRemoteURL)
	if err != nil {
		ui.ErrorWithExit(err.Error())
	}
	baseURL := fmt.Sprintf("%s://api.%s/", scheme, domain)
	Repo = repo
	Client, err = cnb.NewClient(nil).WithAuthToken(getToken(domain)).WithURLs(baseURL)
	if err != nil {
		ui.ErrorWithExit(err.Error())
	}
}

func parseGitRemoteUrl(gitRemoteURL string) (string, string, string, error) {
	re := regexp.MustCompile(`^(https?)://([^/]+)/(.+?)(?:\.git)?$`)
	matches := re.FindStringSubmatch(gitRemoteURL)
	var scheme, domain, repo string
	if len(matches) == 4 {
		scheme = matches[1]
		d := strings.Split(matches[2], "@")
		if len(d) == 2 {
			domain = d[1]
		} else {
			domain = d[0]
		}
		repo = matches[3]
		return scheme, domain, repo, nil
	}
	return "", "", "", errors.New("git remote url is not a valid cnb url")
}

func getToken(domain string) string {
	tokenWithDomainKey := fmt.Sprintf(
		"CNB_TOKEN_%s",
		strings.ReplaceAll(domain, ".", ""))
	token := os.Getenv(tokenWithDomainKey)
	if token == "" {
		return os.Getenv("CNB_TOKEN")
	}
	return token
}