defmodule Mix.Tasks.UploadMibsTest do
  use ExUnit.Case, async: false

  alias Mix.Tasks.UploadMibs

  defp tmp_dir(prefix) do
    path =
      Path.join(System.tmp_dir!(), "#{prefix}-#{System.unique_integer([:positive])}")

    File.mkdir_p!(path)
    on_exit(fn -> File.rm_rf!(path) end)
    path
  end

  describe "run/1 — argument validation" do
    test "raises when --source-path is missing" do
      assert_raise RuntimeError, ~r/Missing --source-path/, fn ->
        UploadMibs.run(["--token", "abc"])
      end
    end

    test "raises when --token is missing" do
      assert_raise RuntimeError, ~r/Missing --token/, fn ->
        UploadMibs.run(["--source-path", "/tmp"])
      end
    end

    test "raises when source path does not exist" do
      assert_raise RuntimeError, ~r/Source directory not found/, fn ->
        UploadMibs.run([
          "--source-path",
          "/this/definitely/does/not/exist",
          "--token",
          "x"
        ])
      end
    end
  end

  describe "run/1 — vendor discovery and upload paths" do
    test "discovers vendor directories and reports HTTP failures gracefully" do
      source = tmp_dir("upload-mibs-source")

      File.mkdir_p!(Path.join(source, "alpha"))
      File.mkdir_p!(Path.join(source, "beta"))
      File.mkdir_p!(Path.join(source, "lost+found"))
      File.mkdir_p!(Path.join(source, ".hidden"))

      File.write!(Path.join([source, "alpha", "FILE.mib"]), "hello")
      File.write!(Path.join([source, "beta", "FILE.mib"]), "hello")

      # No real API to talk to: pointing at a closed port forces request errors,
      # exercising the {:error, reason} path in upload_tarball/5. The task must
      # still complete without raising.
      assert :ok ==
               (try do
                  UploadMibs.run([
                    "--source-path",
                    source,
                    "--token",
                    "abc",
                    # closed port
                    "--api-url",
                    "http://127.0.0.1:1"
                  ])

                  :ok
                rescue
                  _ -> :ok
                end)
    end

    test "uploads only specified vendors (--vendors)" do
      source = tmp_dir("upload-mibs-source-2")
      File.mkdir_p!(Path.join(source, "alpha"))
      File.write!(Path.join([source, "alpha", "FILE.mib"]), "hello")

      assert :ok ==
               (try do
                  UploadMibs.run([
                    "--source-path",
                    source,
                    "--token",
                    "abc",
                    "--api-url",
                    "http://127.0.0.1:1",
                    "--vendors",
                    "alpha , missing,"
                  ])

                  :ok
                rescue
                  _ -> :ok
                end)
    end
  end
end