use std, functional, types, regex, date

include "own-modules/telegram-bot/TelegramBot.own"
include "config.own"
include "DanbooruApi.own"

DANBOORU_REGEX = regex("https://danbooru[^0-9 ]+([0-9]{5,9})")
bot = new TelegramBot(config.telegram.token)
api = new DanbooruApi(config.danbooru.auth)

lastUpdateId = -1
while true {
  sleep(6200)
  updates = bot.getUpdatesSync(lastUpdateId + 1, 50, 58)
  if (updates.isEmpty()) continue

  lastUpdateId = stream(updates)
    .map(::processUpdate)
    .reduce(0, def(a, b) = a + b)
}
// Confirm updates
bot.getUpdatesSync(lastUpdateId + 1, 1, 10)
thread(def() {
  sleep(2000)
  exit(0)
})


def processUpdate(update) {
  if !arrayKeyExists("message", update) {
    return update.update_id
  }
  msg = update.message
  text = msg.text ?? ""
  if text.isEmpty() {
    return update.update_id
  }
  m = DANBOORU_REGEX.matcher(text)
  while m.find() {
    processPost(m.group(1), msg.chat.id, msg.message_id)
  }
  return update.update_id
}

def processPost(id, chatId, msgId) {
  post = api.getPost(id)
  url = "https://danbooru.donmai.us/posts/" + id
  println "%s: %s".sprintf(newDate(), url)
  if !post.isImage() return 0
  blacklistTags = config.danbooru.blacklistTags
  if post.containsTags(blacklistTags) return 0

  caption = getCaption(post)
  reply = jsonencode({"message_id": msgId, "chat_id": chatId})
  bot.invoke("sendPhoto", {
    "chat_id": chatId,
    "reply_parameters": reply,
    "photo": post.getImageUrl(),
    "parse_mode": "html",
    "caption": caption,
  }, def(r) {
    if !r.contains("wrong file identifier") return 1
    bot.invoke("sendPhoto", {
      "chat_id": chatId,
      "reply_parameters": reply,
      "photo": post.getSampleImageUrl(),
      "parse_mode": "html",
      "caption": "small " + caption,
    }, def(r) = 1)
  })
}