package gitea

import (
	"bufio"
	"fmt"
	"os"
	"strings"
	"syscall"
	"time"

	"code.gitea.io/gitea/modules/structs"
	"github.com/pkg/errors"
	"golang.org/x/crypto/ssh/terminal"
)

type Options struct {
	structs.CreateReleaseOption
	Attachments []string
	Token       string
	Username    string
	Password    string
	BaseURL     string
}

type OptionFunc func(*Options)

func WithAttachments(attachments ...string) OptionFunc {
	return func(opts *Options) {
		opts.Attachments = attachments
	}
}

func WithBaseURL(baseURL string) OptionFunc {
	return func(opts *Options) {
		opts.BaseURL = baseURL
	}
}

func WithInteractivePassword() OptionFunc {
	return func(opts *Options) {
		fmt.Print("Enter Password: ")
		password, err := terminal.ReadPassword(syscall.Stdin)
		if err != nil {
			panic(errors.Wrap(err, "error while asking password"))
		}
		opts.Password = strings.TrimSpace(string(password))
	}
}

func WithInteractiveUsername() OptionFunc {
	return func(opts *Options) {
		reader := bufio.NewReader(os.Stdin)
		fmt.Print("Enter Username: ")
		username, err := reader.ReadString('\n')
		if err != nil {
			panic(errors.Wrap(err, "error while asking username"))
		}
		opts.Username = strings.TrimSpace(username)
	}
}

func WithEnvUsername() OptionFunc {
	return func(opts *Options) {
		opts.Username = os.Getenv("GITEA_USERNAME")
	}
}

func WithEnvPassword() OptionFunc {
	return func(opts *Options) {
		opts.Password = os.Getenv("GITEA_PASSWORD")
	}
}

func WithAutoUsername() OptionFunc {
	envUsername := WithEnvUsername()
	interactiveUsername := WithInteractiveUsername()
	return func(opts *Options) {
		envUsername(opts)
		if opts.Username != "" {
			return
		}
		interactiveUsername(opts)
	}
}

func WithAutoPassword() OptionFunc {
	envPassword := WithEnvPassword()
	interactivePassword := WithInteractivePassword()
	return func(opts *Options) {
		envPassword(opts)
		if opts.Password != "" {
			return
		}
		interactivePassword(opts)
	}
}

func DefaultTagName() string {
	now := time.Now()
	return fmt.Sprintf("r%s", now.Format("20060102150405"))
}

func defaultOptions() *Options {
	return &Options{
		CreateReleaseOption: structs.CreateReleaseOption{
			IsDraft:      false,
			IsPrerelease: true,
			Note:         "test",
			Target:       "master",
			Title:        "test",
			TagName:      "test",
		},
		Attachments: make([]string, 0),
	}
}