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--[[ /gitget
    GitHub downloading utility for CC.
    Developed by apemanzilla.

    Modified into an installer by Detective_Smith

    This requires ElvishJerricco's JSON parsing API.
    Direct link: http://pastebin.com/raw.php?i=4nRg9CHU
--]]

if not http then
  error("HTTP API Must be Enabled.")
end

if not term.isColor() then
  error("Advanced Computer Required to play this game")
end

local function save(data, file, p)
    local p = p or ""
    local file = shell.resolve(file)
    if not (fs.exists(string.sub(file,1,#file - #fs.getName(file))) and fs.isDir(string.sub(file,1,#file - #fs.getName(file)))) then
      if fs.exists(string.sub(file,1,#file - #fs.getName(file))) then fs.delete(string.sub(file,1,#file - #fs.getName(file))) end
      fs.makeDir(string.sub(file,1,#file - #fs.getName(file)))
    end
    local f = fs.open(file, "w")
    if file == p.. "/MiniatureCraft" then
      local line = "local MainFolder = '" ..p.. "'"
      f.writeLine(line)
    end
    f.write(data)
    f.close()
end

local function download(url, file, p)
    save(http.get(url).readAll(), file, p)
end

if not json then
    print()
    print("Temporarily Downloading JSON api...\n(Credits to ElvishJerricco!)")
    print()
    download("http://pastebin.com/raw.php?i=4nRg9CHU","json")
    os.loadAPI("json")
    sleep(1)
end

local blacklist = {
  ".gitattributes",
  ".gitignore",
  "LICENSE",
  "README.md"
}

local function allowed(str)
  for i = 1, #blacklist do
    if blacklist[i] == str then
      return false
    end
  end
  return true
end

term.clear()
term.setCursorPos(1,1)
print("Folder to install to: ")
print()
print("Leave Blank for default 'MiniatureCraft' Folder")
print("Put '/' for root")
term.setCursorPos(23, 1)
term.setTextColor(colors.green)
local path = read()

if path == "" then
    path = "MiniatureCraft"
end

term.setCursorPos(1, 6)
term.setTextColor(colors.blue)
print("Beginning Installation.")
print()

local data = json.decode(http.get("https://api.github.com/repos/DetectiveSmith/MiniatureCraft/git/trees/master?recursive=1").readAll())
if data.message and data.message == "Not found" then error("Could not find files.",2) else
  for k,v in pairs(data.tree) do -- Create Directories
        if v.type == "tree" then
            fs.makeDir(fs.combine(path, v.path))
            term.setTextColor(colors.green)
            print("Creating Directory: " ..fs.combine(path, v.path))
        end
    end
     print()
  for k,v in pairs(data.tree) do -- Download Files
        if v.type == "blob" then
             if allowed(v.path) then
        download("https://raw.github.com/DetectiveSmith/MiniatureCraft/master/"..v.path, fs.combine(path, v.path), path)
            term.setTextColor(colors.yellow)
                 term.write("Downloading File: ")
        term.setTextColor(colors.green)
        term.write(path.. "/")
        term.setTextColor(colors.white)
        term.write(v.path)
        print()
          end
    end
     end
end

os.unloadAPI("json")
fs.delete("json")
term.setTextColor(colors.blue)
if path == "/" then path = "" else path = path.. "/" end
print()
print("Installation Complete. Run " ..path.. "MiniatureCraft to play.")
print()
term.setTextColor(colors.white)