init commit

lib/workload_service/consumers/solicitation_requested_consumer.ex

@@ -0,0 +1,138 @@
+defmodule WorkloadService.Consumers.SolicitationRequestedConsumer do
+  use GenServer
+  require Logger
+
+  alias WorkloadService.CommandedApp
+  alias WorkloadService.Commands.SolicitationTask
+
+  @exchange "workload_service.events.solicitation_requested"
+  @queue "workload_service.solicitation_requested"
+  @routing_key "solicitation.requested"
+
+  @provider_service_url "http://localhost:4002"
+  @solicitation_service_url "http://localhost:8081"
+
+  def start_link(opts \\ []) do
+    GenServer.start_link(__MODULE__, opts, name: __MODULE__)
+  end
+
+  def init(_opts) do
+    {:ok, conn} = AMQP.Connection.open(amqp_url())
+    {:ok, channel} = AMQP.Channel.open(conn)
+
+    AMQP.Queue.declare(channel, @queue, durable: true)
+    AMQP.Queue.bind(channel, @queue, @exchange, routing_key: @routing_key)
+    {:ok, _tag} = AMQP.Basic.consume(channel, @queue)
+
+    Logger.info("SolicitationRequestedConsumer started, listening on #{@queue}")
+
+    {:ok, %{channel: channel}}
+  end
+
+  def handle_info({:basic_consume_ok, _}, state), do: {:noreply, state}
+  def handle_info({:basic_cancel, _}, state), do: {:stop, :normal, state}
+  def handle_info({:basic_cancel_ok, _}, state), do: {:noreply, state}
+
+  def handle_info({:basic_deliver, payload, meta}, state) do
+    case process(payload) do
+      :ok ->
+        AMQP.Basic.ack(state.channel, meta.delivery_tag)
+
+      {:error, reason} ->
+        Logger.error("SolicitationRequestedConsumer: failed to process: #{inspect(reason)}")
+        AMQP.Basic.reject(state.channel, meta.delivery_tag, requeue: false)
+    end
+
+    {:noreply, state}
+  end
+
+  defp process(payload) do
+    with {:ok, event} <- Jason.decode(payload),
+         {:ok, provider} <- get_provider(event["provider_id"]),
+         {:ok, template} <- get_active_template(provider, event["policy_type"]),
+         {:ok, result} <- generate_solicitation(event, template),
+         :ok <- create_task(event, result) do
+      :ok
+    end
+  end
+
+  defp get_provider(provider_id) do
+    url = "#{@provider_service_url}/api/v1/providers/#{provider_id}"
+
+    case Req.get(url) do
+      {:ok, %{status: 200, body: %{"data" => provider}}} -> {:ok, provider}
+      {:ok, %{status: 404}} -> {:error, :provider_not_found}
+      {:error, reason} -> {:error, reason}
+    end
+  end
+
+  defp get_active_template(provider, policy_type) do
+    templates = get_in(provider, ["templates", policy_type]) || []
+    default_id = get_in(provider, ["default_templates", policy_type])
+
+    template =
+      if default_id do
+        Enum.find(templates, &(&1["template_id"] == default_id))
+      else
+        Enum.find(templates, &(&1["active"] == true))
+      end
+
+    case template do
+      nil -> {:error, :no_active_template}
+      t -> {:ok, t}
+    end
+  end
+
+  defp generate_solicitation(event, template) do
+    url = "#{@solicitation_service_url}/api/solicitations/generate"
+
+    body = %{
+      org_id: event["org_id"],
+      id: event["id"],
+      template_document_url: template["document_url"],
+      fields: event["fields"] || %{}
+    }
+
+    case Req.post(url, json: body) do
+      {:ok, %{status: 200, body: result}} ->
+        {:ok, result}
+
+      {:ok, %{status: status, body: body}} ->
+        {:error, "solicitation_service returned #{status}: #{inspect(body)}"}
+
+      {:error, reason} ->
+        {:error, reason}
+    end
+  end
+
+  defp create_task(event, result) do
+    org_id = event["org_id"]
+    task_id = WorkloadService.Aggregates.TaskId.new(org_id, "solicitation", Ecto.UUID.generate())
+
+    command = %SolicitationTask.CreateTask{
+      id: task_id,
+      application_id: event["id"],
+      provider_id: event["provider_id"],
+      provider_name: event["provider_name"] || "",
+      task_info: %{
+        "quote_id" => event["quote_id"],
+        "plan_id" => event["plan_id"],
+        "document_url" => result["document_url"]
+      },
+      attachments: [result["document_url"]] |> Enum.filter(& &1)
+    }
+
+    case CommandedApp.dispatch(command) do
+      :ok ->
+        Logger.info("SolicitationRequestedConsumer: created task #{task_id}")
+        :ok
+
+      {:error, reason} ->
+        {:error, reason}
+    end
+  end
+
+  defp amqp_url do
+    Application.get_env(:workload_service, :amqp_url, "amqp://guest:guest@localhost:5672")
+  end
+end