package main

import "strings"

type MessageFilter = func(rawText string) bool

func MessageIsAboutCoffee(rawText string) bool {
	textLower := strings.ToLower(rawText)
	thisIsAboutCoffee := strings.Contains(textLower, "coffee") || strings.Contains(textLower, "コーヒー")
	return thisIsAboutCoffee
}

func MessageSlippedOnBananaPeel(rawText string) bool {
	textLower := strings.ToLower(rawText)
	thisIsAboutCoffee := (strings.Contains(textLower, "banana") ||
		strings.Contains(textLower, "peel"))
	return thisIsAboutCoffee
}