func (h *Handler) Serve(ctrl *telegram.Control, bot *tgbotapi.BotAPI, update tgbotapi.Update) {
var call slugger.Call
if v := ctrl.Context().Value(reflect.TypeOf(call)); v == nil {
ctrl.Throw(errors.New("slugger should be used before"))
return
} else {
call = v.(slugger.Call)
}
if len(call.Query) > 0 {
switch len(call.Query) {
case 1:
h.roubleInline(ctrl, bot, update, call)
default:
h.rateInline(ctrl, bot, update, call)
}
} else {
switch call.Args[0] {
case "rate":
h.rate(ctrl, bot, update, call)
default:
h.rouble(ctrl, bot, update, call)
}
}
}
func (h *Handler) rateInline(ctrl *telegram.Control, bot *tgbotapi.BotAPI, update tgbotapi.Update, call slugger.Call) {
if len(call.Query) != 2 {
ctrl.Throw(ErrRateExpectTwoArguments)
return
}
if err := validateCurrency(call.Query[0]); err != nil {
ctrl.Throw(err)
return
}
if err := validateCurrency(call.Query[1]); err != nil {
ctrl.Throw(err)
return
}
from, to := toCurrency(call.Query[0]), toCurrency(call.Query[1])
rate, err := h.f.GetRate(ctrl.Context(), from, to)
if err != nil {
ctrl.Throw(err)
return
}
bot.AnswerInlineQuery(tgbotapi.InlineConfig{
InlineQueryID: update.InlineQuery.ID,
Results: []interface{}{
inlineResultArticle(from, to, rate.Rate),
},
})
ctrl.Next()
}
func (h *Handler) rouble(ctrl *telegram.Control, bot *tgbotapi.BotAPI, update tgbotapi.Update, call slugger.Call) {
if len(call.Args) != 1 {
ctrl.Throw(ErrRoubleExpectOneArgument)
return
}
if err := validateCurrency(call.Args[0]); err != nil {
ctrl.Throw(err)
return
}
rate, err := h.f.GetRate(ctrl.Context(), toCurrency(call.Args[0]), finance.RUB)
if err != nil {
ctrl.Throw(err)
return
}
bot.Send(tgbotapi.NewMessage(update.Message.Chat.ID, strconv.FormatFloat(rate.Rate, 'f', 2, 64)))
ctrl.Next()
}