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83 lines
2.1 KiB
83 lines
2.1 KiB
9 years ago
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--[[
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Licensed under GNU General Public License v2
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* (c) 2014, Aaron Lebo
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--]]
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local newtimer = require("lain.helpers").newtimer
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local json = require("lain.util").dkjson
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local wibox = require("wibox")
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local string = { format = string.format }
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local tonumber = tonumber
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-- Crypto currencies widget
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-- lain.widgets.contrib.ccurr
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local ccurr = {}
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-- Currently gets
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-- * BTC/USD
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-- * DOGE/USD
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-- using Coinbase and Cryptsy APIs.
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-- requires http://dkolf.de/src/dkjson-lua.fsl/home
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-- based upon http://awesome.naquadah.org/wiki/Bitcoin_Price_Widget
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local function get(url)
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local f = io.popen('curl -m 5 -s "' .. url .. '"')
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if not f then
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return 0
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else
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local s = f:read("*all")
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f:close()
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return s
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end
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end
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local function parse(j)
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local obj, pos, err = json.decode(j, 1, nil)
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if err then
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return nil
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else
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return obj
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end
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end
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local function worker(args)
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local args = args or {}
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local timeout = args.timeout or 600
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local btc_url = args.btc_url or "https://coinbase.com/api/v1/prices/buy"
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local doge_url = args.doge_url or "http://pubapi.cryptsy.com/api.php?method=singlemarketdata&marketid=132"
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local settings = args.settings or function() end
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ccurr.widget = wibox.widget.textbox('')
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local function update()
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price_now = {
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btc = "N/A",
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doge = "N/A"
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}
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btc = parse(get(btc_url))
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doge = parse(get(doge_url))
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if btc and doge then
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price_now.btc = tonumber(btc["subtotal"]["amount"])
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price_now.doge = tonumber(doge["return"]["markets"]["DOGE"]["lasttradeprice"])
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price_now.doge = string.format("%.4f", price_now.btc * price_now.doge)
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end
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widget = ccurr.widget
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settings()
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end
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newtimer("ccurr", timeout, update)
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return ccurr.widget
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end
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return setmetatable(ccurr, { __call = function(_, ...) return worker(...) end })
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