tribes-plugin-aether/lib/aether/chat/participant.ex

defmodule TribeOne.TribesPlugin.Aether.Chat.Participant do
  @moduledoc """
  Participant projection for Aether conversations.
  """

  use Ash.Resource,
    otp_app: :tribe_one_aether,
    domain: TribeOne.TribesPlugin.Aether.Chat,
    data_layer: AshPostgres.DataLayer,
    extensions: [AshNostrSync]

  import Ash.Expr

  @roles [:owner, :member]

  postgres do
    table("aether_chat_participants")
    repo(Tribes.Repo)

    custom_indexes do
      index([:channel_id, :pubkey], unique: true, where: "deleted_at IS NULL")
      index([:pubkey], where: "deleted_at IS NULL")
    end
  end

  nostr_sync do
    namespace("plugins.aether.chat.participant")
    lane(:control)
    publish?(true)
    consume?(true)
  end

  actions do
    defaults([:read])

    read :by_channel_pubkey do
      get?(true)

      argument :channel_id, :uuid do
        allow_nil?(false)
      end

      argument :pubkey, :string do
        allow_nil?(false)
      end

      filter(expr(channel_id == ^arg(:channel_id) and pubkey == ^arg(:pubkey)))
    end

    read :by_pubkey do
      argument :pubkey, :string do
        allow_nil?(false)
      end

      prepare(build(filter: expr(pubkey == ^arg(:pubkey)), sort: [inserted_at: :desc]))
    end

    create :create do
      accept([:id, :channel_id, :pubkey, :user_id, :display_name, :role, :metadata])
      change(AshNostrSync.PublishChange)
    end

    create :sync_upsert do
      accept([:id, :channel_id, :pubkey, :user_id, :display_name, :role, :metadata])
      upsert?(true)
    end

    update :update do
      require_atomic?(false)
      accept([:user_id, :display_name, :role, :metadata])
      change(AshNostrSync.PublishChange)
    end

    destroy :destroy do
      require_atomic?(false)
      soft?(true)
      soft_delete()
      change(AshNostrSync.PublishChange)
    end
  end

  relationships do
    belongs_to :channel, TribeOne.TribesPlugin.Aether.Chat.Channel do
      allow_nil?(false)
      attribute_type(:uuid)
      public?(true)
    end
  end

  attributes do
    attribute :id, :uuid do
      allow_nil?(false)
      primary_key?(true)
      public?(true)
      writable?(true)
      default(&Ash.UUID.generate/0)
    end

    attribute :pubkey, :string do
      allow_nil?(false)
      public?(true)
    end

    attribute :user_id, :uuid do
      public?(true)
    end

    attribute :display_name, :string do
      public?(true)
    end

    attribute :role, :atom do
      constraints(one_of: @roles)
      allow_nil?(false)
      default(:member)
      public?(true)
    end

    attribute :metadata, :map do
      allow_nil?(false)
      default(%{})
      public?(true)
    end

    timestamps(type: :utc_datetime)
  end
end