Mikubot-2/plugins/urbandictionary.lua

local doc = [[
	/urbandictionary <query>
	Returns a definition from Urban Dictionary.
]]

local triggers = {
	'^/urbandictionary[@'..bot.username..']*',
	'^/ud[@'..bot.username..']*$',
	'^/ud[@'..bot.username..']* ',
	'^/urban[@'..bot.username..']*'
}

local action = function(msg)

	local input = msg.text:input()
	if not input then
		if msg.reply_to_message and msg.reply_to_message.text then
			input = msg.reply_to_message.text
		else
			sendReply(msg, doc)
			return
		end
	end

	local url = 'http://api.urbandictionary.com/v0/define?term=' .. URL.escape(input)

	local jstr, res = HTTP.request(url)
	if res ~= 200 then
		sendReply(msg, config.errors.connection)
		return
	end

	local jdat = JSON.decode(jstr)
	if jdat.result_type == "no_results" then
		sendReply(msg, config.errors.results)
		return
	end

	local message = '"' .. jdat.list[1].word .. '"\n' .. jdat.list[1].definition:trim()
	if string.len(jdat.list[1].example) > 0 then
		message = message .. '\n\nExample:\n' .. jdat.list[1].example:trim()
	end

	sendReply(msg, message)

end

return {
	action = action,
	triggers = triggers,
	doc = doc
}