defmodule LSG.IRC.AlcoologAnnouncerPlugin do
  require Logger

  @moduledoc """
  Annonce changements d'alcoolog
  """

  @channel "#dmz"

  @seconds 30

  @apero [
    "C'EST L'HEURE DE L'APÉRRROOOOOOOO !!",
    "SAAAAANNNNNNNTTTTTTTTAAAAAAAAIIIIIIIIIIIIIIIIIIIIII",
    "APÉRO ? APÉRO !",
    {:timed, ["/!\\ à vos tires bouchons…", "… débouchez …", "… BUVEZ! SANTAIII!"]},
    "/!\\ ALERTE APÉRO /!\\",
    "CED !!! VASE DE ROUGE !",
    "DIDI UN PETIT RICARD™??!",
    "ALLEZ GUIGUI UNE PETITE BIERE ?",
    {:timed, ["/!\\ à vos tires bouchons…", "… débouchez …", "… BUVEZ! SANTAIII!"]},
    "APPPPAIIIRRREAAUUUUUUUUUUU"
  ]

  def irc_doc, do: nil

  def start_link(), do: GenServer.start_link(__MODULE__, [], name: __MODULE__)

  def log(account) do
    dets_filename = (LSG.data_path() <> "/" <> "alcoologlog.dets") |> String.to_charlist
    {:ok, dets} = :dets.open_file(dets_filename, [{:type,:bag}])
    from = ~U[2020-08-23 19:41:40.524154Z]
    to = ~U[2020-08-24 19:41:40.524154Z]
    select = [
  {{:"$1", :"$2", :_},
   [
     {:andalso,
      {:andalso, {:==, :"$1", {:const, account.id}},
       {:>, :"$2", {:const, DateTime.to_unix(from)}}},
      {:<, :"$2", {:const, DateTime.to_unix(to)}}}
   ], [:"$_"]}
    ]
    res = :dets.select(dets, select)
    :dets.close(dets)
    res
  end

  def init(_) do
    {:ok, _} = Registry.register(IRC.PubSub, "account", [])
    stats = get_stats()
    Process.send_after(self(), :stats, :timer.seconds(30))
    dets_filename = (LSG.data_path() <> "/" <> "alcoologlog.dets") |> String.to_charlist
    {:ok, dets} = :dets.open_file(dets_filename, [{:type,:bag}])
    ets = nil # :ets.new(__MODULE__.ETS, [:ordered_set, :named_table, :protected, {:read_concurrency, true}])
    #:ok = LSG.IRC.SettingPlugin.declare("alcoolog.alerts", __MODULE__, true, :boolean)
    #:ok = LSG.IRC.SettingPlugin.declare("alcoolog.aperoalert", __MODULE__, true, :boolean)
    #
    {:ok, {stats, now(), dets, ets}}#, {:continue, :traverse}}
  end

  def handle_continue(:traverse, state = {_, _, dets, ets}) do
    traverse_fun = fn(obj, dets) ->
      case obj do
        {nick, %DateTime{} = dt, active} ->
          :dets.delete_object(dets, obj)
          :dets.insert(dets, {nick, DateTime.to_unix(dt), active})
          IO.puts("ok #{inspect obj}")
          dets
        {nick, ts, value} ->
          :ets.insert(ets, { {nick, ts}, value })
          dets
      end
    end
    :dets.foldl(traverse_fun, dets, dets)
    :dets.sync(dets)
    IO.puts("alcoolog announcer fixed")
    {:noreply, state}
  end

  def alcohol_reached(old, new, level) do
      (old.active < level && new.active >= level) && (new.active5m >= level)
    end

  def alcohol_below(old, new, level) do
      (old.active > level && new.active <= level) && (new.active5m <= level)
    end


  def handle_info(:stats, {old_stats, old_now, dets, ets}) do
    stats = get_stats()
    now = now()

    if old_now.hour < 18 && now.hour == 18 do
      apero = Enum.shuffle(@apero)
              |> Enum.random()

      case apero do
        {:timed, list} ->
          spawn(fn() ->
            for line <- list do
              IRC.Connection.broadcast_message("evolu.net", "#dmz", line)
              :timer.sleep(:timer.seconds(5))
            end
          end)
        string ->
          IRC.Connection.broadcast_message("evolu.net", "#dmz", string)
      end

    end

    #IO.puts "newstats #{inspect stats}"
    events = for {acct, old} <- old_stats do
      new = Map.get(stats, acct, nil)
      #IO.puts "#{acct}: #{inspect(old)} -> #{inspect(new)}"

      now = DateTime.to_unix(DateTime.utc_now())
      if new && new[:active] do
        :dets.insert(dets, {acct, now, new[:active]})
        :ets.insert(ets, {{acct, now}, new[:active]})
      else
        :dets.insert(dets, {acct, now, 0.0})
        :ets.insert(ets, {{acct, now}, new[:active]})
      end

      event = cond do
        old == nil -> nil
        (old.active > 0) && (new == nil) -> :sober
        new == nil -> nil
        alcohol_reached(old, new, 0.5) -> :stopconduire
        alcohol_reached(old, new, 1.0) -> :g1
        alcohol_reached(old, new, 2.0) -> :g2
        alcohol_reached(old, new, 3.0) -> :g3
        alcohol_reached(old, new, 4.0) -> :g4
        alcohol_reached(old, new, 5.0) -> :g5
        alcohol_reached(old, new, 6.0) -> :g6
        alcohol_reached(old, new, 7.0) -> :g7
        alcohol_reached(old, new, 10.0) -> :g10
        alcohol_reached(old, new, 13.74) -> :record
        alcohol_below(old, new, 0.5) -> :conduire
        alcohol_below(old, new, 1.0) -> :fini1g
        alcohol_below(old, new, 2.0) -> :fini2g
        alcohol_below(old, new, 3.0) -> :fini3g
        alcohol_below(old, new, 4.0) -> :fini4g
        (old.rising) && (!new.rising) -> :lowering
        true -> nil
      end
      {acct, event}
    end

    for {acct, event} <- events do
      message = case event do
        :g1 -> [
            "[vigicuite jaune] LE GRAMME! LE GRAMME O/",
            "début de vigicuite jaune ! LE GRAMME ! \\O/",
            "waiiiiiiii le grammmeee",
            "bourraiiiiiiiiiiide 1 grammeeeeeeeeeee",
          ]
        :g2 -> [
            "[vigicuite orange] \\o_YAY 2 GRAMMES ! _o/",
            "PAITAIIIIIIIIII DEUX GRAMMEESSSSSSSSSSSSSSSSS",
            "bourrrrrraiiiiiiiiiiiiiiiide 2 grammeeeeeeeeeees",
          ]
        :g3 -> [
            "et un ! et deux ! et TROIS GRAMMEEESSSSSSS",
            "[vigicuite rouge] _o/ BOURRAIIDDDEEEE 3 GRAMMESSSSSSSSS \\o/ \\o/"
          ]
        :g4 -> [
            "[vigicuite écarlate] et un, et deux, et trois, ET QUATRES GRAMMEESSSSSSSSSSSSSSSSSSSssssss"
          ]
        :g5 -> "[vigicuite écarlate+] PUTAIN 5 GRAMMES !"
        :g6 -> "[vigicuite écarlate++] 6 grammes ? Vous pouvez joindre Alcool info service au 0 980 980 930"
        :g7 -> "[vigicuite c'est la merde] 7 grammes. Le SAMU, c'est le 15."
        :g10 -> "BORDLE 10 GRAMMES"
        :record -> "RECORD DU MONDE BATTU ! >13.74g/l !!"
        :fini1g -> [
            "fin d'alerte vigicuite jaune, passage en vert (<1g/l)",
            "/!\\ alerte moins de 1g/l /!\\"
          ]
        :fini2g -> [
            "t'as moins de 2 g/l, faut se reprendre là [vigicuite jaune]"
          ]
        :fini3g -> [
            "fin d'alerte vigicuite rouge, passage en orange (<3g/l)"
          ]
        :fini4g -> [
            "fin d'alerte vigicuite écarlate, passage en rouge (<4g/l)"
          ]
        :lowering -> [
            "attention ça baisse!",
            "tu vas quand même pas en rester là ?",
            "IL FAUT CONTINUER À BOIRE !",
            "t'abandonnes déjà ?",
            "!santai ?",
            "faut pas en rester là",
            "il faut se resservir",
            "coucou faut reboire",
            "encore un petit verre ?",
            "abwaaaaaaaaaaaaarrrrrrrrrrrrrr",
            "taux d'alcoolémie en chute ! agissez avant qu'il soit trop tard!",
            "ÇA BAISSE !!"
        ]
        :stopconduire -> [
            "0.5g! bientot le gramme?",
            "tu peux plus prendre la route... mais... tu peux prendre la route du gramme! !santai !",
            "fini la conduite!",
            "0.5! continues faut pas en rester là!",
            "beau début, continues !",
            "ça monte! 0.5g/l!"
        ]
        :conduire -> [
            "tu peux conduire, ou recommencer à boire! niveau critique!",
            "!santai ?",
            "tu peux reprendre la route, ou reprendre la route du gramme..",
            "attention, niveau critique!",
            "il faut boire !!",
            "trop de sang dans ton alcool, c'est mauvais pour la santé",
            "faut pas en rester là !",
          ]
        :sober -> [
            "sobre…",
            "/!\\ alerte sobriété /!\\",
            "... sobre?!?!",
            "sobre :(",
            "attention, t'es sobre :/",
            "danger, alcoolémie à 0.0 !",
            "sobre! c'était bien on recommence quand ?",
            "sobre ? Faut recommencer...",
            "T'es sobre. Ne te laisses pas abattre- ton caviste peut aider.",
            "Vous êtes sobre ? Ceci n'est pas une fatalité - resservez vous vite !"
        ]
        _ -> nil
      end
      message = case message do
        m when is_binary(m) -> m
        m when is_list(m) -> m |> Enum.shuffle() |> Enum.random()
        nil -> nil
      end
      if message do
        #IO.puts("#{acct}: #{message}")
        account = IRC.Account.get(acct)
        for {net, chan} <- IRC.Membership.notify_channels(account) do
          user = IRC.UserTrack.find_by_account(net, account)
          nick = if(user, do: user.nick, else: account.name)
          IRC.Connection.broadcast_message(net, chan, "#{nick}: #{message}")
        end
      end
    end

    timer()

    #IO.puts "tick stats ok"
    {:noreply, {stats,now,dets,ets}}
  end

  def handle_info(_, state) do
    {:noreply, state}
  end

  defp now() do
    DateTime.utc_now()
    |> Timex.Timezone.convert("Europe/Paris")
  end

  defp get_stats() do
    Enum.into(LSG.IRC.AlcoologPlugin.get_all_stats(), %{})
  end

  defp timer() do
    Process.send_after(self(), :stats, :timer.seconds(@seconds))
  end

end