From d2974d295f847031e6ad853b32f40704ae5cc324 Mon Sep 17 00:00:00 2001
From: Marcel van der Boom <marcel@hsdev.com>
Date: Fri, 28 Nov 2014 22:59:52 +0100
Subject: [PATCH] Add USD support

---
 plugins/btc.lua | 48 +++++++++++++++++++++++++++++++-----------------
 1 file changed, 31 insertions(+), 17 deletions(-)

diff --git a/plugins/btc.lua b/plugins/btc.lua
index 23d5091..2236355 100644
--- a/plugins/btc.lua
+++ b/plugins/btc.lua
@@ -1,36 +1,50 @@
 
-function getBTCEUR(eur)
+function getBTCX(amount,currency)
    -- Do request on bitcoinaverage, the final / is critical!
-   local res,code  = https.request("https://api.bitcoinaverage.com/ticker/global/EUR/")
+   local res,code  = https.request("https://api.bitcoinaverage.com/ticker/global/"..currency.."/")
    
    if code~= 200 then return nil end
    local data = json:decode(res)
-     
+
    -- Easy, it's right there
-   text = "BTC/EUR"..'\n'..'Buy: '..data.ask..'\n'..'Sell: '..data.bid
+   text = "BTC/"..currency..'\n'..'Buy: '..data.ask..'\n'..'Sell: '..data.bid
    
    -- If we have a number as second parameter, calculate the bitcoin amount
-   if eur~=nil then
-      btc = tonumber(eur) / tonumber(data.ask)
-      text = text.."\n EUR "..eur.." = BTC "..btc
+   if amount~=nil then
+      btc = tonumber(amount) / tonumber(data.ask)
+      text = text.."\n "..currency .." "..amount.." = BTC "..btc
    end
    return text
 end
 
 function run(msg, matches)
-  if matches[1] == "!btc" then
-    return getBTCEUR(nil)
-  end
-  return getBTCEUR(matches[1])
+   vardump(matches)
+   local cur = 'EUR'
+   local amt = nil
+   -- Get the global match out of the way
+   if matches[1] == "!btc" then  return getBTCX(amt,cur) end
+
+   if matches[2]~=nil then
+      -- There is a second match
+      amt = matches[2]
+      cur = string.upper(matches[1])
+   else
+      -- Just a EUR or USD param
+      cur = string.upper(matches[1])
+   end
+   return getBTCX(amt,cur)
 end
 
 return {
-    description = "BTCEUR market value", 
-    usage = "!btc [EUR]",
-    patterns = {
+   description = "Bitcoin global average market value (in EUR or USD)", 
+   usage = "!btc [EUR|USD] [amount]",
+   patterns = {
       "^!btc$",
-      "^!btc (%d+[%d%.]*)$",
-    }, 
-    run = run 
+      "^!btc ([Ee][Uu][Rr])$",
+      "^!btc ([Uu][Ss][Dd])$",
+      "^!btc (EUR) (%d+[%d%.]*)$",
+      "^!btc (USD) (%d+[%d%.]*)$"
+   }, 
+   run = run 
 }