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230package bot
import (
"context"
"errors"
"fmt"
"strings"
"time"
tgbotapi "github.com/go-telegram-bot-api/telegram-bot-api"
)
const (
CommandStart = "start"
KeyboardButtonTask = "/task"
Emails = 100
)
var ErrNotFound = errors.New("not found")
type UserToken struct {
UserKey string
Token string
}
type Workout struct {
Date time.Time
Description string
}
type Sender interface {
Send(msg tgbotapi.Chattable) (tgbotapi.Message, error)
}
type Storage interface {
UserToken(ctx context.Context, userName string) (UserToken, error)
UpdateUserToken(ctx context.Context, userName string, userToken UserToken) error
}
type FinalSurge interface {
Login(ctx context.Context, email, password string) (UserToken, error)
Workouts(ctx context.Context, userToken UserToken, startDate, endDate time.Time) ([]Workout, error)
}
type Clock interface {
Now() time.Time
}
//go:generate mockgen -source=$GOFILE -package mock -destination mock/interfaces_mock.go
type Bot struct {
bot Sender
db Storage
fs FinalSurge
clock Clock
keyboard tgbotapi.ReplyKeyboardMarkup
userEmails map[string]string
}
func NewBot(bot Sender, db Storage, fs FinalSurge, clock Clock) *Bot {
return &Bot{
bot: bot,
db: db,
fs: fs,
clock: clock,
keyboard: tgbotapi.NewReplyKeyboard(tgbotapi.NewKeyboardButtonRow(
tgbotapi.NewKeyboardButton(KeyboardButtonTask),
)),
userEmails: make(map[string]string, Emails),
}
}
func (b *Bot) ProcessUpdate(ctx context.Context, update tgbotapi.Update) error {
if update.Message == nil {
return nil
}
msg, err := b.message(ctx, update.Message)
if err != nil {
return fmt.Errorf("get message: %w", err)
}
if msg == nil {
return nil
}
if _, err := b.bot.Send(*msg); err != nil {
return fmt.Errorf("send reply msg to chat %d: %w", msg.ChatID, err)
}
return nil
}
func (b *Bot) Keyboard() tgbotapi.ReplyKeyboardMarkup {
return b.keyboard
}
func (b *Bot) message(ctx context.Context, message *tgbotapi.Message) (*tgbotapi.MessageConfig, error) {
userName := message.From.UserName
chatID := message.Chat.ID
text := message.Text
if message.IsCommand() && message.Command() == CommandStart {
b.userEmails[userName] = ""
msg := tgbotapi.NewMessage(chatID, "Enter FinalSurge email:")
return &msg, nil
}
if text == KeyboardButtonTask {
return b.buttonTask(ctx, userName, chatID)
}
email, ok := b.userEmails[userName]
if !ok {
return b.newChooseOptionMsg(chatID), nil
}
switch {
case email == "":
b.userEmails[userName] = text
msg := tgbotapi.NewMessage(chatID, "Enter FinalSurge password:")
return &msg, nil
case email != "":
userToken, err := b.fs.Login(ctx, email, text)
if err != nil {
return nil, fmt.Errorf("login: %w", err)
}
if err := b.db.UpdateUserToken(ctx, userName, userToken); err != nil {
return nil, fmt.Errorf("update user token: %w", err)
}
b.userEmails[userName] = ""
return b.newChooseOptionMsg(chatID), nil
}
return nil, nil
}
func (b *Bot) buttonTask(ctx context.Context, userName string, chatID int64) (*tgbotapi.MessageConfig, error) {
userToken, err := b.db.UserToken(ctx, userName)
if errors.Is(err, ErrNotFound) {
msg := tgbotapi.NewMessage(chatID, "Please authorize first by entering /start")
return &msg, nil
}
if err != nil {
return nil, fmt.Errorf("get usertoken: %w", err)
}
today := NewDate(b.clock.Now())
tomorrow := today.AddDate(0, 0, 1)
workouts, err := b.fs.Workouts(context.Background(), userToken, today, tomorrow)
if err != nil {
return nil, fmt.Errorf("get workouts: %w", err)
}
task := MessageTask(workouts, today, tomorrow)
msg := tgbotapi.NewMessage(chatID, task)
return &msg, nil
}
func MessageTask(workouts []Workout, today, tomorrow time.Time) string {
todayDescriptions := make([]string, 0, len(workouts))
tomorrowDescriptions := make([]string, 0, len(workouts))
for _, w := range workouts {
switch {
case w.Date.Equal(today):
todayDescriptions = append(todayDescriptions, w.Description)
case w.Date.Equal(tomorrow):
tomorrowDescriptions = append(tomorrowDescriptions, w.Description)
default:
}
}
task := strings.Builder{}
task.WriteString("Tasks:")
task.WriteByte('\n')
writeDescriptions := func(day string, date time.Time, descriptions []string) {
task.WriteString(day)
task.WriteByte(' ')
task.WriteString(date.Format("02.01"))
task.WriteByte(':')
task.WriteByte('\n')
if len(descriptions) != 0 {
for _, d := range descriptions {
task.WriteString(d)
task.WriteByte('\n')
}
} else {
task.WriteString("not set")
task.WriteByte('\n')
}
}
writeDescriptions("Today", today, todayDescriptions)
task.WriteByte('\n')
writeDescriptions("Tomorrow", tomorrow, tomorrowDescriptions)
return task.String()
}
func (b *Bot) newChooseOptionMsg(chatID int64) *tgbotapi.MessageConfig {
msg := tgbotapi.NewMessage(chatID, "Choose option:")
msg.ReplyMarkup = b.keyboard
return &msg
}
func NewDate(t time.Time) time.Time {
return time.Date(t.Year(), t.Month(), t.Day(), 0, 0, 0, 0, time.UTC)
}