do

local user = cred_data.sankaku_username
local password = cred_data.sankaku_pw --Your SHA1 hashed password. (echo "choujin-steiner--YOUR-PASSWORD--" | sha1sum)

local function get_complex(tag)
  local BASE_URL = 'https://chan.sankakucomplex.com'
  local url = BASE_URL..'/post/index.json?login='..user..'&password_hash='..password..'&tags='..tag
  local b,c = https.request(url)
  if c ~= 200 then return nil end
  local complex = json:decode(b)
  -- truly randomize
  math.randomseed(os.time())
  -- random max json table size
  local i = math.random(#complex)
  local link_image = 'https:'..complex[i].file_url
  return link_image
end

local function run(msg, matches)
  local tag = matches[1]
  local tag = string.gsub(tag, " ", '_' )
  local tag = string.gsub(tag, ":", '%%3A' )
  local receiver = get_receiver(msg)
  local url = get_complex(tag)
  if string.match(url, ".gif") or string.match(url, ".zip") or string.match(url, ".webm") or string.match(url, ".mp4") then
    send_document_from_url(receiver, url)
  else
	send_photo_from_url(receiver, url, send_title, {receiver, title})
  end
    return "Source: "..url
end

return {
  description = "Sendet ein zufälliges Bild von Sankakucomplex.", 
  usage = {"#sankaku [Tags]","#sc [Tags]"},
  patterns = {"^#sankaku (.*)$","^#sc (.*)$"},
  run = run 
}

end