local inv = require "inv"
local event = require "event"
local sides = require "sides"

local searchterm = ""
local output = nil
local ci,si = 1,1
local run = true

local function search()
 io.write("\n\27[2KSearch: ")
 searchterm = io.read()
end
local function setOutput()
 io.write("\n\27[2KOutput side:")
 local in = io.read()
 output = tonumber(in) or sides[in]
end

local function extract(res)
 local slot,item = res[1], res[2]
 io.write(string.format("\nExtracting %s; Count [64] or x to exit? ",item.label))
 local count = io.read()
 if count == "x" then return false end
 count=tonumber(count) or 64
 inv.extractItem(slot,count)
end

local function popup(str,title)
 if title then
  title=string.format("[%s]",title or "")
 else
  title = ""
 end
 local width, height, content = 0, 0, {}
 for line in str:gmatch("[^\n]*") do
  height = height + 1
  width = math.max(width,line:len())
  content[#content+1] = line
 end
 if width < 1 or height < 1 then return false end
 local startx,starty = (40-(width//2))-2, (12-(height//2))-2
 io.write(string.format("\27[%d;%dH╒═%s%s╕",starty,startx,title,("═"):rep((width+1)-title:len())))
 for k,v in pairs(content) do
  io.write(string.format("\27[%d;%dH│ %s%s │",starty+k,startx,v,(" "):rep(width-v:len())))
 end
 io.write(string.format("\27[%d;%dH┕%s┙",starty+1+#content,startx,("━"):rep(width+2)))
end

local function info(item)
 local s = string.format("\n%s (%s)\nCount: %d\n",item.label,item.name,item.size)
 if item.aspects then
  s=s.."Aspects: "
  for k,v in pairs(item.aspects) do
   s=string.format("%s\n - %d x %s",s,v,k)
  end
 end
 s=s.."\n\nPress any key."
 popup(s,item.label or item.name)
 event.pull("key_down")
end

local function help()
 popup("\n[Tab]   Search\n[Enter] Extract Items\n[i]     Item Information\n[r]     Refresh\n[o]     Set output\n\nPress any key.","Key bindings")
 event.pull("key_down")
end

local function draw(sr, ci, used, size)
 io.write("\27[2J\27[H")
 for i = si, si+22 do
  if sr[i] then
   item = sr[i][2]
   pt = " "
   if ci == i then
    pt = ">"
   end
--   print(string.format("%s %s (%s - %d)",pt,item.label, item.name, item.size):sub(1,79))
   print(string.format("%s %s (%d - %dx%d + %d)",pt,item.label, item.size, math.floor(item.size/item.maxSize),item.maxSize,item.size%item.maxSize):sub(1,79))
  end
 end
 io.write("\27[25;62HPress [H] for help.")
-- io.write(string.format("\27[24;1H(%d/%d) [Tab] Search [Enter] Extract [i] Information [r] Refresh",used,size))
 io.write(string.format("\27[24;1H(%d/%d) %s",used,size-1,searchterm))
end

while run do
 local sr, used, size = inv.search(searchterm)
 ci = 1
 while true do
  --[[
  if ci > math.min(#sr,23) then
   ci = math.min(#sr,23)
  elseif ci < 1 then
   ci = 1
  end
  ]]--
  if ci > #sr then
   ci = #sr
  elseif ci < 1 then
   ci = 1
  end
  if ci > math.min(si + 20,#sr) then
   si = si + 5
  elseif ci < si + 2 then
   si = si - 5
  end
  if si < 1 then
   si = 1
  elseif si > #sr then
   si = sr - 23
  end
  draw(sr,ci,used,size)
  local _,_,ch,co = event.pull("key_down")
  ch=string.char(ch)
  if co == 208 then -- down
   ci = ci + 1
  elseif co == 200 then -- up
   ci = ci - 1
  elseif co == 28 then -- enter
   extract(sr[ci])
   break
  elseif co == 15 then -- tab
   search()
   break
  elseif ch == "i" then
   info(sr[ci][2])
  elseif ch == "h" then
   help()
  elseif ch == "r" then
   popup("Refreshing index...")
   inv.inputItems()
   break
  elseif ch == "o" then
   setOutput()
  elseif ch == "q" then
   run = false
   break
  end
 end
end