defmodule AprsmeWeb.PageControllerTest do
  # Mutates :aprsme, :health_status; must not run in parallel with other tests
  # that read it (the HealthCheck plug, for example).
  use AprsmeWeb.ConnCase, async: false

  setup do
    original = Application.get_env(:aprsme, :health_status)
    on_exit(fn -> Application.put_env(:aprsme, :health_status, original || :healthy) end)
    :ok
  end

  describe "health/2 controller action" do
    # Call the action directly; the /health endpoint is otherwise served by
    # the HealthCheck plug as text/plain.
    test "returns 200 with ok status when app is healthy and DB is up" do
      Application.put_env(:aprsme, :health_status, :healthy)
      base = Phoenix.Controller.put_format(Phoenix.ConnTest.build_conn(), "json")
      result = AprsmeWeb.PageController.health(base, %{})
      assert result.status == 200
      body = Jason.decode!(result.resp_body)
      assert body["status"] == "ok"
      assert body["database"] == "connected"
      assert is_binary(body["version"])
    end

    test "returns 503 draining when app is draining" do
      Application.put_env(:aprsme, :health_status, :draining)
      base = Phoenix.Controller.put_format(Phoenix.ConnTest.build_conn(), "json")
      result = AprsmeWeb.PageController.health(base, %{})
      assert result.status == 503
      body = Jason.decode!(result.resp_body)
      assert body["status"] == "draining"
      assert body["message"] =~ "draining"
    end
  end

  describe "GET /ready" do
    test "returns 200 with ready status and version", %{conn: conn} do
      conn = get(conn, "/ready")
      assert conn.status == 200
      body = json_response(conn, 200)
      assert body["status"] == "ready"
      assert is_binary(body["version"])
    end
  end

  describe "GET /sitemap.xml" do
    test "returns an XML urlset with known paths", %{conn: conn} do
      conn = get(conn, "/sitemap.xml")
      assert conn.status == 200
      xml = conn.resp_body
      assert xml =~ ~s(<?xml version="1.0" encoding="UTF-8"?>)
      assert xml =~ "<urlset"
      assert xml =~ "/about"
      assert xml =~ "/status"
    end
  end

  describe "GET /.well-known/api-catalog" do
    test "returns an RFC 9264-style linkset", %{conn: conn} do
      conn = get(conn, "/.well-known/api-catalog")
      assert conn.status == 200
      body = Jason.decode!(conn.resp_body)
      assert is_list(body["linkset"])

      anchors = Enum.map(body["linkset"], & &1["anchor"])
      assert Enum.any?(anchors, &String.contains?(&1, "/api/v1"))
      assert Enum.any?(anchors, &String.contains?(&1, "/mobile/websocket"))
    end
  end

  describe "GET /status.json (status_json/2)" do
    test "returns application + aprs_is sections", %{conn: conn} do
      conn = get(conn, "/status.json")
      assert conn.status == 200
      body = json_response(conn, 200)
      assert Map.has_key?(body, "aprs_is")
      assert Map.has_key?(body, "application")
      assert is_binary(body["application"]["version"])
    end
  end

  describe "uptime formatting (via format_uptime/1 inside status_json)" do
    # The private format_uptime/1 helper has four branches based on duration.
    # These test cases hit each branch by sending the status_json action
    # through the controller (which calls LeaderElection.get_cluster_aprs_status
    # and then formats the uptime_seconds value returned).
    test "formats zero uptime as 'Not connected'" do
      conn = Phoenix.ConnTest.build_conn()
      # Call the action directly; the real status is "Not connected" when the
      # app isn't actually running an APRS connection in the test environment.
      result = AprsmeWeb.PageController.status_json(conn, %{})
      body = Jason.decode!(result.resp_body)
      assert is_binary(body["aprs_is"]["uptime_display"])
    end
  end
end