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message.go
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message.go
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package bete
import (
"context"
"fmt"
"github.com/yi-jiayu/ted"
)
func (b Bete) HandleMessage(ctx context.Context, m *ted.Message) {
if m.Location != nil {
b.HandleLocation(ctx, m)
return
}
if m.Text == "" {
// Ignore non-text messages.
return
}
if cmd, args := m.CommandAndArgs(); cmd != "" {
b.HandleCommand(ctx, m, cmd, args)
return
}
if m.ReplyToMessage != nil {
b.HandleReply(ctx, m)
return
}
b.HandleTextMessage(ctx, m)
}
func (b Bete) HandleTextMessage(ctx context.Context, m *ted.Message) {
var query Query
if favourite := b.Favourites.Find(m.From.ID, m.Text); favourite != "" {
query, _ = ParseQuery(favourite)
} else {
var err error
query, err = ParseQuery(m.Text)
if err != nil {
if err != ErrQueryDoesNotStartWithBusStopCode {
b.reportInvalidQuery(ctx, m.Chat.ID, err)
}
return
}
}
text, err := b.etaMessageText(ctx, query.Stop, query.Filter, FormatSummary)
if err != nil {
captureError(ctx, err)
return
}
req := ted.SendMessageRequest{
ChatID: m.Chat.ID,
Text: text,
ParseMode: "HTML",
ReplyMarkup: etaMessageReplyMarkup(query.Stop, query.Filter, FormatSummary),
}
b.send(ctx, req)
}
func (b Bete) reportInvalidQuery(ctx context.Context, chatID int64, err error) {
var text string
switch err {
case ErrQueryDoesNotStartWithBusStopCode:
text = stringQueryShouldStartWithBusStopCode
case ErrQueryContainsInvalidCharacters:
text = stringQueryContainsInvalidCharacters
case ErrQueryTooLong:
text = stringQueryTooLong
// I want to know if anyone actually runs into this error.
captureError(ctx, err)
}
b.send(ctx, ted.SendMessageRequest{
ChatID: chatID,
Text: text,
})
}
func getFavouriteQuery(text string) string {
var query string
n, err := fmt.Sscanf(text, stringAddFavouritePromptForName, &query)
if err != nil {
return ""
}
if n != 1 {
return ""
}
return query
}
// HandleReply handles messages which are replies.
//
// When matching against the reply text, note that formatting markup in the original message will not be present.
func (b Bete) HandleReply(ctx context.Context, m *ted.Message) {
if m.ReplyToMessage.Text == stringAddFavouritePromptForQuery {
b.addFavouriteSuggestName(ctx, m)
} else if query := getFavouriteQuery(m.ReplyToMessage.Text); query != "" {
b.addFavouriteFinish(ctx, m, query)
} else if m.ReplyToMessage.Text == stringETACommandPrompt {
b.handleETACommand(ctx, m, m.Text)
} else {
b.send(ctx, ted.SendMessageRequest{
ChatID: m.Chat.ID,
Text: "Sorry, I forgot what we were talking about.",
})
}
}
func (b Bete) addFavouriteSuggestName(ctx context.Context, m *ted.Message) {
query, err := ParseQuery(m.Text)
if err != nil {
b.reportInvalidQuery(ctx, m.Chat.ID, err)
askAgain := ted.SendMessageRequest{
ChatID: m.Chat.ID,
Text: stringAddFavouritePromptForQuery,
ReplyMarkup: ted.ForceReply{},
}
b.send(ctx, askAgain)
return
}
var description string
stop, err := b.BusStops.Find(query.Stop)
switch {
case err == ErrNotFound:
case err != nil:
captureError(ctx, err)
default:
description = stop.Description
}
req := ted.SendMessageRequest{
ChatID: m.Chat.ID,
Text: fmt.Sprintf(stringAddFavouriteSuggestName, query.Canonical()),
ReplyMarkup: addFavouriteSuggestNameMarkup(query, description),
}
b.send(ctx, req)
}
func (b Bete) addFavouriteFinish(ctx context.Context, m *ted.Message, query string) {
name := m.Text
userID := m.From.ID
err := b.Favourites.Put(userID, name, query)
if err != nil {
captureError(ctx, err)
b.send(ctx, ted.SendMessageRequest{
ChatID: m.Chat.ID,
Text: stringErrorSorry,
})
return
}
favourites, err := b.Favourites.List(userID)
if err != nil {
captureError(ctx, err)
b.send(ctx, ted.SendMessageRequest{
ChatID: m.Chat.ID,
Text: stringErrorSorry,
})
return
}
req := ted.SendMessageRequest{
ChatID: m.Chat.ID,
Text: fmt.Sprintf(stringAddFavouriteAdded, query, name),
ReplyMarkup: showFavouritesReplyMarkup(favourites),
}
b.send(ctx, req)
}
func (b Bete) HandleLocation(ctx context.Context, m *ted.Message) {
chatID := m.Chat.ID
location := m.Location
nearby, err := b.BusStops.Nearby(location.Latitude, location.Longitude, float32(1), 5)
if err != nil {
captureError(ctx, err)
return
}
if len(nearby) > 0 {
b.send(ctx, ted.SendMessageRequest{
ChatID: chatID,
Text: stringLocationNearby,
})
for _, stop := range nearby {
req := ted.SendVenueRequest{
ChatID: chatID,
Latitude: stop.BusStop.Location.Latitude,
Longitude: stop.BusStop.Location.Longitude,
Title: stop.BusStop.Description,
Address: fmt.Sprintf("%.0f m away", stop.Distance*1000),
ReplyMarkup: ted.InlineKeyboardMarkup{
InlineKeyboard: [][]ted.InlineKeyboardButton{
{
{
Text: "Get ETAs",
CallbackData: CallbackData{
Type: callbackNearbyETA,
StopID: stop.BusStop.ID,
}.Encode(),
},
},
},
},
}
b.send(ctx, req)
}
} else {
b.send(ctx, ted.SendMessageRequest{
ChatID: chatID,
Text: stringNoLocationsNearby,
})
}
}