add arguments support

currencies-widget.lua

@@ -0,0 +1,46 @@
+-- name = "Курсы валют"
+-- description = "Free Currency Rates API (https://github.com/fawazahmed0/currency-api#readme). Нажатие на дату загружает текущие курсы, на остальные строки - сдвигает дату на один день назад."
+-- type = "widget"
+-- author = "Andrey Gavrilov"
+-- version = "1.0"
+
+curs1 = {"usd", "eur", "eur", "gbp", "gbp", "chf", "aed", "btc"}
+curs2 = {"rub", "rub", "usd", "rub", "usd", "usd", "usd", "usd"}
+
+function onAlarm()
+	local locDate = "latest"
+    getRates(locDate)
+end
+	
+function getRates(locDate)
+	net:getText("https://cdn.jsdelivr.net/gh/fawazahmed0/currency-api@1/"..locDate.."/currencies/usd.json")
+end
+
+function onNetworkResult(result)
+	dat = json:getValue(result, "object string:date")
+	tab = {}
+	table.insert(tab, "<u>"..dat.."</u>")
+	for idx = 1, #curs1, 1 do
+		local cur1 = curs1[idx]
+		local cur2 = curs2[idx]
+		local rate1 = json:getValue(result, "object object:usd double:"..cur1)
+		local rate2 = json:getValue(result, "object object:usd double:"..cur2)
+		local rate = rate2/rate1
+		table.insert(tab, "1 "..string.upper(cur1).." = "..rate.." "..string.upper(cur2))
+	end
+	ui:showLines(tab)
+end
+
+function onClick(idx)
+	if idx == 1 then
+		local locDat = "latest"
+		getRates(locDat)
+	else
+		local locYear = tonumber(string.sub(dat, 1, 4))
+		local locMonth = tonumber(string.sub(dat, 6,7))
+		local locDay = tonumber(string.sub(dat, 9, 10))
+		local locTime = os.time{year=locYear, month=locMonth, day=locDay} - (60*60*24)
+		local locDate = os.date("%Y-%m-%d", locTime)
+		getRates(locDate)
+	end
+end