278 lines
7.4 KiB
Go
278 lines
7.4 KiB
Go
package main
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import (
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"encoding/json"
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"fmt"
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"log"
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"os"
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"strconv"
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"strings"
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"time"
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"unicode"
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"git.fromouter.space/hamcha/tg"
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)
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var remindpath *string
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type Reminder struct {
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TargetID int64
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When int64
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Text string
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Reference *ReminderReference
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}
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type ReminderReference struct {
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Chat int64
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Message int64
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}
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var reminders map[string]Reminder
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const reminderMaxDuration = time.Hour * 24 * 30 * 3
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var defaultLocation *time.Location = nil
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func remind_init() {
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var err error
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defaultLocation, err = time.LoadLocation("Europe/Rome")
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if err != nil {
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log.Fatalf("[remind] Something is really wrong: %s\n", err.Error())
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return
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}
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reminders = make(map[string]Reminder)
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file, err := os.Open(*remindpath)
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if err != nil {
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return
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}
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defer file.Close()
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err = json.NewDecoder(file).Decode(&reminders)
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if err != nil {
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log.Println("[remind] WARN: Could not load pending reminders (malformed or unreadable file): " + err.Error())
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return
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}
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for id := range reminders {
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go runreminder(id)
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}
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log.Printf("[remind] Loaded %d pending reminders from %s\n", len(reminders), *remindpath)
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}
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func remind_message(broker *tg.Broker, update tg.APIMessage) {
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if isCommand(update, "ricordami") {
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// Supported formats:
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// Xs/m/h/d => in X seconds/minutes/hours/days
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// HH:MM => at HH:MM (24 hour format)
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// HH:MM:SS => at HH:MM:SS (24 hour format)
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// dd/mm/yyyy => same hour, specific date
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// dd/mm/yyyy-HH:MM => specific hour, specific dat
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// dd/mm/yyyy-HH:MM:SS => specific hour, specific date
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parts := strings.SplitN(*(update.Text), " ", 3)
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// Little hack to allow text-less reminders with replies
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if len(parts) == 2 && update.ReplyTo != nil {
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parts = append(parts, "")
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}
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if len(parts) < 3 {
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broker.SendTextMessage(update.Chat, "<b>Sintassi</b>\n/ricordami <i>[quando]</i> Messaggio\n\n<b>Formati supportati per [quando]</b>:\n 10s 10m 10h 10d (secondi/minuti/ore/giorni)\n 13:20 15:55:01 (ora dello stesso giorno, formato 24h)\n 11/02/2099 11/02/2099-11:20:01 (giorno diverso, stessa ora [1] o specifica [2])", &tg.MessageOptions{
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ReplyID: &update.MessageID,
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})
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return
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}
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format := parts[1]
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message := parts[2]
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loc := defaultLocation
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if uloc, ok := tzlocs[update.User.UserID]; ok {
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loc = uloc
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}
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timestamp, err := parseDuration(format, loc)
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if err != nil {
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broker.SendTextMessage(update.Chat, err.Error(), &tg.MessageOptions{
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ReplyID: &update.MessageID,
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})
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return
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}
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id := strconv.FormatInt(update.Chat.ChatID, 36) + "-" + strconv.FormatInt(update.MessageID, 36)
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reminder := Reminder{
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TargetID: update.User.UserID,
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When: timestamp.Unix(),
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Text: message,
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}
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if update.ReplyTo != nil {
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reminder.Reference = &ReminderReference{
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Chat: update.Chat.ChatID,
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Message: update.ReplyTo.MessageID,
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}
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}
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reminders[id] = reminder
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savereminder()
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go runreminder(id)
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whenday := "più tardi"
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_, todaym, todayd := time.Now().Date()
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_, targetm, targetd := timestamp.Date()
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if todaym != targetm || todayd != targetd {
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whenday = "il " + timestamp.In(loc).Format("2/1")
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}
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whentime := "alle " + timestamp.In(loc).Format("15:04:05")
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broker.SendTextMessage(update.Chat, "Ok, vedrò di avvisarti "+whenday+" "+whentime, &tg.MessageOptions{
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ReplyID: &update.MessageID,
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})
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}
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if isCommand(update, "reminders") {
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// Should only work in private chats
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if update.Chat.Type != tg.ChatTypePrivate {
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broker.SendTextMessage(update.Chat, "Per favore chiedimi in privato dei reminder", &tg.MessageOptions{
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ReplyID: &update.MessageID,
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})
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return
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}
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useritems := []Reminder{}
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for _, reminder := range reminders {
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if reminder.TargetID == update.User.UserID {
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useritems = append(useritems, reminder)
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}
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}
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if len(useritems) == 0 {
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broker.SendTextMessage(update.Chat, "Non ci sono reminder in coda per te", &tg.MessageOptions{
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ReplyID: &update.MessageID,
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})
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} else {
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broker.SendTextMessage(update.Chat, fmt.Sprintf("Ci sono <b>%d</b> reminder in coda per te", len(useritems)), &tg.MessageOptions{
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ReplyID: &update.MessageID,
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})
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}
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}
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}
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func runreminder(id string) {
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// In case this is called in the init, wait until the broker is available
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for broker == nil {
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// Wait
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time.Sleep(time.Second)
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}
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// Get reminder
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r := reminders[id]
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remaining := r.When - time.Now().Unix()
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if remaining > 0 {
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// Wait remaining time
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time.Sleep(time.Second * time.Duration(remaining))
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}
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// Remind!
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broker.SendTextMessage(&tg.APIChat{ChatID: r.TargetID}, "<b>Heyla! Mi avevi chiesto di ricordarti questo:</b>\n"+r.Text, nil)
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if r.Reference != nil {
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broker.ForwardMessage(&tg.APIChat{ChatID: r.TargetID}, tg.APIMessage{MessageID: r.Reference.Message, Chat: &tg.APIChat{ChatID: r.Reference.Chat}})
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}
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// Delete reminder from pending list and save list to disk
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delete(reminders, id)
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savereminder()
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}
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func savereminder() {
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file, err := os.Create(*remindpath)
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if err != nil {
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log.Println("[remind] WARN: Could not open pending reminders file: " + err.Error())
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return
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}
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err = json.NewEncoder(file).Encode(reminders)
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if err != nil {
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log.Println("[macro] WARN: Could not save pending reminders into file: " + err.Error())
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}
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}
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func isSscanfValid(n int, err error) bool {
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return err == nil
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}
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func scanMixedDelay(str string) (bool, time.Time, error) {
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remaining := str
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now := time.Now()
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num := 0
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sep := ' '
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for len(remaining) > 1 {
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_, err := fmt.Sscanf(remaining, "%d%c", &num, &sep)
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if err != nil {
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return false, now, err
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}
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dur := time.Duration(num)
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switch unicode.ToLower(sep) {
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case 's':
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dur *= time.Second
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case 'm':
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dur *= time.Minute
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case 'h':
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dur *= time.Hour
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case 'd':
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dur *= time.Hour * 24
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default:
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return true, now, fmt.Errorf("La durata ha una unità che non conosco, usa una di queste: s (secondi) m (minuti) h (ore) d (giorni)")
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}
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return true, now.Add(dur), nil
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}
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/* TO FIX
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now = now.Add(dur)
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remaining = remaining[scanned:]
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}
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return true, now, nil
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*/
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return false, now, nil
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}
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func parseDuration(date string, loc *time.Location) (time.Time, error) {
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now := time.Now().In(loc)
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hour := now.Hour()
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min := now.Minute()
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sec := now.Second()
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day := now.Day()
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month := now.Month()
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year := now.Year()
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dayunspecified := false
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isDurationFmt, duration, err := scanMixedDelay(date)
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switch {
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case isSscanfValid(fmt.Sscanf(date, "%d/%d/%d-%d:%d:%d", &day, &month, &year, &hour, &min, &sec)):
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case isSscanfValid(fmt.Sscanf(date, "%d/%d/%d-%d:%d", &day, &month, &year, &hour, &min)):
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sec = 0
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case isSscanfValid(fmt.Sscanf(date, "%d/%d/%d", &day, &month, &year)):
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hour = now.Hour()
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min = now.Minute()
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sec = now.Second()
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case isSscanfValid(fmt.Sscanf(date, "%d:%d:%d", &hour, &min, &sec)):
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day = now.Day()
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month = now.Month()
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year = now.Year()
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dayunspecified = true
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case isSscanfValid(fmt.Sscanf(date, "%d:%d", &hour, &min)):
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day = now.Day()
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month = now.Month()
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year = now.Year()
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sec = 0
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dayunspecified = true
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case isDurationFmt:
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return duration, err
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default:
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return now, fmt.Errorf("Non capisco quando dovrei ricordartelo!")
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}
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targetDate := time.Date(year, month, day, hour, min, sec, 0, loc)
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if targetDate.Before(now) {
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// If day was not specified assume tomorrow
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if dayunspecified {
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targetDate = targetDate.Add(time.Hour * 24)
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} else {
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return now, fmt.Errorf("Non posso ricordarti cose nel passato!")
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}
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}
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if targetDate.After(now.Add(reminderMaxDuration)) {
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return now, fmt.Errorf("Non credo riuscirei a ricordarmi qualcosa per così tanto")
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}
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return targetDate, nil
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}
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