1 files changed, 82 insertions, 0 deletions
diff --git a/lain/widgets/contrib/ccurr.lua b/lain/widgets/contrib/ccurr.lua
new file mode 100644
index 0000000..980e19b
--- /dev/null
+++ b/lain/widgets/contrib/ccurr.lua
@@ -0,0 +1,82 @@
+
+--[[
+                                                  
+     Licensed under GNU General Public License v2 
+      * (c) 2014, Aaron Lebo                      
+                                                  
+--]]
+
+local newtimer = require("lain.helpers").newtimer
+local json     = require("lain.util").dkjson
+
+local wibox    = require("wibox")
+
+local string   = { format = string.format }
+local tonumber = tonumber
+
+-- Crypto currencies widget
+-- lain.widgets.contrib.ccurr
+local ccurr = {}
+
+-- Currently gets
+--   * BTC/USD
+--   * DOGE/USD
+-- using Coinbase and Cryptsy APIs.
+
+-- requires   http://dkolf.de/src/dkjson-lua.fsl/home
+-- based upon http://awesome.naquadah.org/wiki/Bitcoin_Price_Widget
+
+local function get(url)
+    local f = io.popen('curl -m 5 -s "' .. url .. '"')
+    if not f then
+        return 0
+    else
+        local s = f:read("*all")
+        f:close()
+        return s
+    end
+end
+
+local function parse(j)
+    local obj, pos, err = json.decode(j, 1, nil)
+    if err then
+        return nil
+    else
+        return obj
+    end
+end
+
+local function worker(args)
+    local args     = args or {}
+    local timeout  = args.timeout  or 600
+    local btc_url  = args.btc_url  or "https://coinbase.com/api/v1/prices/buy"
+    local doge_url = args.doge_url or "http://pubapi.cryptsy.com/api.php?method=singlemarketdata&marketid=132"
+    local settings = args.settings or function() end
+
+    ccurr.widget = wibox.widget.textbox('')
+
+    local function update()
+        price_now = {
+            btc  = "N/A",
+            doge = "N/A"
+        }
+
+        btc  = parse(get(btc_url))
+        doge = parse(get(doge_url))
+
+        if btc and doge then
+            price_now.btc  = tonumber(btc["subtotal"]["amount"])
+            price_now.doge = tonumber(doge["return"]["markets"]["DOGE"]["lasttradeprice"])
+            price_now.doge = string.format("%.4f", price_now.btc * price_now.doge)
+        end
+
+        widget = ccurr.widget
+        settings()
+    end
+
+    newtimer("ccurr", timeout, update)
+
+    return ccurr.widget
+end
+
+return setmetatable(ccurr, { __call = function(_, ...) return worker(...) end })