The most important screen this month.

nodes/currency.lua

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+local node = ThreadNode:extend('node.currency', {
+  threadFile = 'nodes/currency_thread.lua',
+  threadChannel = 'currency',
+
+  updateInterval = 10,
+  state = {
+    values = {},
+    changes = {},
+  },
+})
+
+local inspect = require('vendor.inspect')
+
+local textFont = love.graphics.newFont('fonts/Lato-Light.ttf', 90)
+local headFont = love.graphics.newFont('fonts/Lato-Regular.ttf', 90)
+local smallFont = love.graphics.newFont('fonts/Lato-Light.ttf', 30)
+
+function node:render()
+  love.graphics.setColor( 0, 0, 0 )
+  love.graphics.rectangle("fill", 0, 0, love.graphics.getWidth(), love.graphics.getHeight())
+
+  if self.state.values and self.state.values[2] then
+    local pad = 20
+    love.graphics.setColor( 255, 255, 255 )
+    love.graphics.setFont(headFont)
+    love.graphics.printf("BTCPLN", 0, 180, love.graphics.getWidth()/2, 'right')
+    love.graphics.printf("TRYIDR", 0, 350, love.graphics.getWidth()/2, 'right')
+    love.graphics.setFont(textFont)
+
+    love.graphics.setColor( 0, 255, 0 )
+    love.graphics.printf(self.state.values[1], love.graphics.getWidth()/2 + 2*pad, 180, love.graphics.getWidth()/2 - 2*pad, 'left')
+    love.graphics.printf(self.state.values[2], love.graphics.getWidth()/2 + 2*pad, 350, love.graphics.getWidth()/2 - 2*pad, 'left')
+  else
+    love.graphics.setColor( 255, 255, 255, 80 )
+
+    love.graphics.setFont(smallFont)
+    love.graphics.printf("Loading currency...", 0, love.graphics.getHeight() - 200, love.graphics.getWidth(), 'center')
+  end
+end
+
+function node:onUpdate(v)
+  for n in ipairs(v.values) do
+    if self.state.values[n] then
+      if self.state.values[n] ~= v.values[n] then
+        self.state.changes[n] = self.state.values[n] > v.values[n]
+      end
+    else
+      self.state.changes[n] = true
+    end
+  end
+
+  self.state.values = v.values
+end
+
+return node

nodes/currency_thread.lua

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+local socket = require("socket")
+local http = require("socket.http")
+local json = require("vendor.json")
+local lume = require("vendor.lume")
+
+local btcURL = 'http://www.bitmarket.pl/json/BTCPLN/ticker.json'
+local tryURL = 'http://api.fixer.io/latest?base=TRY'
+
+local r, c, h = http.request(btcURL)
+if c == 200 then
+  btcpln = json.decode(r)['last']
+  local r, c, h = http.request(tryURL)
+  if c == 200 then
+    tryidr = json.decode(r)['rates']['IDR']
+  end
+  love.thread.getChannel('currency'):push({
+    values = {math.floor(btcpln), math.floor(tryidr)},
+  })
+  print("Update finished")
+else
+  print("Update failed")
+end