import tempfile
import unittest
from pathlib import Path

from render_config import render


class RenderConfigSlotTests(unittest.TestCase):
    def test_render_config_expands_scene_slot_bindings(self):
        with tempfile.TemporaryDirectory() as tmpdir:
            root = Path(tmpdir)
            template_path = root / "template.json"
            profile_path = root / "profile.json"

            template_path.write_text(
                """
{
  "name": "std_service_test_stream",
  "slots": {
    "inputs": [{"name": "video_input_main", "type": "video_source", "required": true}],
    "services": [{"name": "object_storage_main", "type": "object_storage", "required": false}],
    "outputs": [{"name": "stream_output_main", "type": "stream_publish", "required": true}]
  },
  "template": {
    "nodes": [
      {"id": "input_rtsp_main", "type": "input_rtsp", "url": "${slot:video_input_main.url}"},
      {"id": "publish_stream", "type": "publish", "outputs": [{"proto": "hls", "path": "${slot:stream_output_main.publish_hls_path}"}]}
    ],
    "edges": []
  }
}
""".strip(),
                encoding="utf-8",
            )

            profile_path.write_text(
                """
{
  "name": "line_a",
  "instances": [
    {
      "name": "cam1",
      "template": "std_service_test_stream",
      "scene_meta": {
        "display_name": "B厂区通道1"
      },
      "input_bindings": {
        "video_input_main": {
          "resolved": {
            "url": "rtsp://10.0.0.1/live"
          }
        }
      },
      "output_bindings": {
        "stream_output_main": {
          "publish_hls_path": "./web/hls/cam1/index.m3u8"
        }
      }
    }
  ]
}
""".strip(),
                encoding="utf-8",
            )

            rendered = render(template_path, profile_path, [])

        self.assertIn("templates", rendered)
        self.assertIn("instances", rendered)
        self.assertEqual(1, len(rendered["instances"]))
        instance = rendered["instances"][0]
        self.assertEqual("std_service_test_stream__cam1", instance["template"])
        template = rendered["templates"][instance["template"]]
        self.assertEqual("rtsp://10.0.0.1/live", template["nodes"][0]["url"])
        self.assertEqual("./web/hls/cam1/index.m3u8", template["nodes"][1]["outputs"][0]["path"])


if __name__ == "__main__":
    unittest.main()