Add discord notifications for games
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@ -26,3 +26,7 @@ REACT_APP_SSH_PORT=42069
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REDIS_HOST=localhost
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REDIS_PORT=6379
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NEW_GAME_PINGABLE_ROLE_ID=1123232
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NEW_GAME_CHANNEL_WEBHOOK=https://discordapp.com/api/webhooks/
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REMIND_MOVE_CHANNEL_WEBHOOK=https://discordapp.com/api/webhooks/
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@ -14,14 +14,19 @@ config :chessh, RateLimits,
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player_session_message_burst_rate: 8,
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player_public_keys: 15,
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create_game_ms: 60 * 1000,
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create_game_rate: 3
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create_game_rate: 3,
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discord_notification_rate: 3,
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discord_notification_rate_ms: 1000
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config :chessh, Web,
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discord_oauth_login_url: "https://discord.com/api/oauth2/token",
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discord_user_api_url: "https://discord.com/api/users/@me",
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discord_scope: "identify"
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config :chessh, DiscordNotifications, looking_for_games_mention: "<@&1070084105796075550>"
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config :chessh, DiscordNotifications,
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game_move_notif_delay_ms: 3 * 60 * 1000,
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game_created_notif_delay_ms: 30 * 1000,
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reschedule_delay: 5 * 1000
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config :joken, default_signer: "secret"
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@ -3,6 +3,11 @@ import Config
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config :chessh,
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ssh_port: String.to_integer(System.get_env("SSH_PORT", "34355"))
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config :chessh, DiscordNotifications,
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looking_for_games_role_mention: "<@&#{System.get_env("NEW_GAME_PINGABLE_ROLE_ID")}>",
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discord_game_move_notif_webhook: System.get_env("REMIND_MOVE_CHANNEL_WEBHOOK"),
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discord_new_game_notif_webhook: System.get_env("NEW_GAME_CHANNEL_WEBHOOK")
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config :chessh, Web,
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discord_client_id: System.get_env("DISCORD_CLIENT_ID"),
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discord_client_secret: System.get_env("DISCORD_CLIENT_SECRET"),
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@ -18,6 +18,7 @@ defmodule Chessh.Application do
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children = [
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Chessh.Repo,
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Chessh.SSH.Daemon,
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Chessh.DiscordNotifier,
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Plug.Cowboy.child_spec(
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scheme: :http,
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plug: Chessh.Web.Endpoint,
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129
lib/chessh/discord/notifier.ex
Normal file
129
lib/chessh/discord/notifier.ex
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@ -0,0 +1,129 @@
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defmodule Chessh.DiscordNotifier do
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use GenServer
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@name :discord_notifier
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alias Chessh.{Game, Player, Repo}
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def start_link(state \\ []) do
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GenServer.start_link(__MODULE__, state, name: @name)
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end
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@impl true
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def init(state) do
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{:ok, state}
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end
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@impl true
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def handle_cast(x, state), do: handle_info(x, state)
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@impl true
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def handle_info({:attempt_notification, notification} = body, state) do
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[discord_notification_rate, discord_notification_rate_ms] =
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Application.get_env(:chessh, RateLimits)
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|> Keyword.take([:discord_notification_rate, :discord_notification_rate_ms])
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|> Keyword.values()
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reschedule_delay = Application.get_env(:chessh, RateLimits)[:reschedule_delay]
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case Hammer.check_rate_inc(
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:redis,
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"discord-webhook-message-rate",
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discord_notification_rate_ms,
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discord_notification_rate,
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1
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) do
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{:allow, _count} ->
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send_notification(notification)
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{:deny, _limit} ->
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Process.send_after(self(), body, reschedule_delay)
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end
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{:noreply, state}
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end
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@impl true
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def handle_info({:schedule_notification, notification, delay}, state) do
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Process.send_after(self(), {:attempt_notification, notification}, delay)
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{:noreply, state}
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end
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defp send_notification({:move_reminder, game_id}) do
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[min_delta_t, discord_game_move_notif_webhook] =
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Application.get_env(:chessh, DiscordNotifications)
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|> Keyword.take([:game_move_notif_delay_ms, :discord_game_move_notif_webhook])
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|> Keyword.values()
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case Repo.get(Game, game_id) do
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nil ->
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nil
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game ->
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%Game{
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dark_player: %Player{discord_id: dark_player_discord_id},
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light_player: %Player{discord_id: light_player_discord_id},
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turn: turn,
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updated_at: last_updated,
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moves: move_count
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} = Repo.preload(game, [:dark_player, :light_player])
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delta_t = NaiveDateTime.diff(NaiveDateTime.utc_now(), last_updated, :millisecond)
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if delta_t >= min_delta_t do
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post_discord(
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discord_game_move_notif_webhook,
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"<@#{if turn == :light, do: light_player_discord_id, else: dark_player_discord_id}> it is your move in Game #{game_id} (move #{move_count})."
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)
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end
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end
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end
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defp send_notification({:game_created, game_id}) do
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[pingable_mention, discord_game_created_notif_webhook] =
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Application.get_env(:chessh, DiscordNotifications)
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|> Keyword.take([:looking_for_games_role_mention, :discord_new_game_notif_webhook])
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|> Keyword.values()
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case Repo.get(Game, game_id) do
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nil ->
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nil
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game ->
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%Game{
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dark_player: dark_player,
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light_player: light_player
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} = Repo.preload(game, [:dark_player, :light_player])
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message =
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case {is_nil(light_player), is_nil(dark_player)} do
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{true, false} ->
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"#{pingable_mention}, <@#{dark_player.discord_id}> is looking for an opponent to play as light in Game #{game_id}"
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{false, true} ->
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"#{pingable_mention}, <@#{light_player.discord_id}> is looking for an opponent to play as dark in Game #{game_id}"
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_ ->
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false
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end
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if message do
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post_discord(discord_game_created_notif_webhook, message)
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end
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end
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end
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defp post_discord(webhook, message) do
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:httpc.request(
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:post,
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{
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String.to_charlist(webhook),
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[],
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'application/json',
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%{content: message} |> Jason.encode!() |> String.to_charlist()
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},
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[],
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[]
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)
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end
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end
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@ -77,7 +77,7 @@ defmodule Chessh.SSH.Client.Game do
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) do
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{:allow, _count} ->
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# Starting a new game
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{:ok, %Game{} = game} =
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{:ok, %Game{id: game_id} = game} =
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Game.changeset(
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%Game{},
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Map.merge(
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@ -92,6 +92,12 @@ defmodule Chessh.SSH.Client.Game do
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)
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|> Repo.insert()
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GenServer.cast(
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:discord_notifier,
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{:schedule_notification, {:game_created, game_id},
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Application.get_env(:chessh, DiscordNotifications)[:game_created_notif_delay_ms]}
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)
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init([
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%State{
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state
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@ -403,6 +409,12 @@ defmodule Chessh.SSH.Client.Game do
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:syn.publish(:games, {:game, game_id}, {:new_move, attempted_move})
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GenServer.cast(
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:discord_notifier,
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{:schedule_notification, {:move_reminder, game_id},
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Application.get_env(:chessh, DiscordNotifications)[:game_move_notif_delay_ms]}
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)
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_ ->
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nil
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end
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@ -2,11 +2,9 @@ defmodule Chessh.Repo.Migrations.CreatePlayer do
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use Ecto.Migration
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def change do
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execute("CREATE EXTENSION IF NOT EXISTS citext", "")
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create table(:players) do
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add(:discord_id, :string, null: false)
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add(:username, :citext, null: false)
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add(:username, :string, null: false)
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add(:hashed_password, :string, null: true)
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timestamps()
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end
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