import json
import subprocess
import tempfile
import unittest
from pathlib import Path
from unittest.mock import patch

from scripts import run_mvp_meeting as cli
from src.meeting_lab.models.meeting_context import load_meeting_context
from src.meeting_lab.orchestration import mvp as mvp_api
from src.meeting_lab.orchestration.mvp import MvpMeetingConfig, MvpRunResult
from src.meeting_lab.protocol.generate_direct_protocol import DirectProtocolResult
from src.meeting_lab.transcription.whisper import TranscriptionError, TranscriptionResult


def context_data():
    return {
        "schema_version": "1",
        "meeting": {
            "meeting_id": "programmatic-test",
            "title": "Programmatic Test",
            "language": "de",
            "date": None,
            "objective": "API prüfen",
            "notes": "",
        },
        "participants": [
            {
                "participant_id": "person-1",
                "display_name": "Test Person",
                "aliases": [],
                "role": "Projektleitung",
                "department": None,
                "attendance_status": "present",
                "notes": None,
            }
        ],
        "speaker_mappings": {"SPEAKER_00": "person-1"},
        "mentioned_people": [],
        "organization": {"name": "Example", "departments": []},
        "known_entities": {},
        "context_rules": {"do_not_infer_responsibilities": True},
    }


def fake_transcribe(audio, model, output, language, **kwargs):
    output.mkdir(parents=True, exist_ok=True)
    raw = output / "whisper_raw.json"
    transcript = output / "transcript.json"
    text = output / "transcript.txt"
    metadata = output / "runtime_metadata.json"
    raw.write_text('{"transcription": []}\n', encoding="utf-8")
    transcript.write_text(
        json.dumps(
            {
                "text": "Ein kurzer Besprechungstext.",
                "segments": [
                    {
                        "id": 0,
                        "start": 0.0,
                        "end": 1.0,
                        "text": "Ein kurzer Besprechungstext.",
                    }
                ],
            }
        ),
        encoding="utf-8",
    )
    text.write_text("Ein kurzer Besprechungstext.\n", encoding="utf-8")
    metadata.write_text('{"runtime_seconds": 0.1}\n', encoding="utf-8")
    return TranscriptionResult(output, raw, transcript, text, metadata, 0.1)


def fake_protocol(transcript, context, **kwargs):
    rendered_context = load_meeting_context(context)
    assert rendered_context.meeting_id == "programmatic-test"
    return DirectProtocolResult(
        protocol_text="# Meeting Protocol\n",
        exact_prompt="prompt",
        model_metadata={"model": kwargs["model"]},
        runtime_metadata={"request_count": 1},
        raw_response={"response": "# Meeting Protocol\n"},
    )


class MvpApiTests(unittest.TestCase):
    def config(self, root: Path):
        audio = root / "meeting.wav"
        model = root / "model.bin"
        audio.write_bytes(b"audio")
        model.write_bytes(b"model")
        return MvpMeetingConfig(
            audio_file=audio,
            whisper_model=model,
            output_root=root / "runs",
            model="test:model",
        )

    def test_programmatic_context_is_persisted_without_source_yaml(self):
        with tempfile.TemporaryDirectory() as directory:
            root = Path(directory)
            config = self.config(root)
            events = []
            with (
                patch.object(mvp_api, "transcribe_audio", side_effect=fake_transcribe),
                patch.object(
                    mvp_api, "generate_direct_protocol", side_effect=fake_protocol
                ),
                patch.object(subprocess, "run") as subprocess_run,
            ):
                result = mvp_api.run_mvp_meeting(
                    config, meeting_context=context_data(), progress_sink=events.append
                )

            self.assertEqual(result.exit_code, 0)
            context_path = result.run_dir / "context/meeting_context.yaml"
            self.assertTrue(context_path.is_file())
            persisted = load_meeting_context(context_path)
            self.assertEqual(persisted.meeting_id, "programmatic-test")
            self.assertEqual(persisted.speaker_mappings, {"SPEAKER_00": "person-1"})
            subprocess_run.assert_not_called()
            self.assertEqual(
                [(event.stage, event.status) for event in events],
                [
                    ("preparing", "started"),
                    ("preparing", "completed"),
                    ("transcription", "started"),
                    ("transcription", "completed"),
                    ("protocol_generation", "started"),
                    ("protocol_generation", "completed"),
                    ("completed", "completed"),
                ],
            )
            self.assertTrue(all(event.progress is None for event in events))

    def test_failure_emits_terminal_failure_event(self):
        with tempfile.TemporaryDirectory() as directory:
            root = Path(directory)
            config = self.config(root)
            events = []
            with patch.object(
                mvp_api,
                "transcribe_audio",
                side_effect=TranscriptionError("stopped"),
            ):
                result = mvp_api.run_mvp_meeting(config, progress_sink=events.append)

            self.assertEqual(result.exit_code, 2)
            self.assertEqual(events[-1].stage, "failed")
            self.assertEqual(events[-1].status, "failed")
            self.assertIn("transcription", events[-1].message)
            metadata = json.loads((result.run_dir / "run_metadata.json").read_text())
            self.assertEqual(metadata["status"], "failed")

    def test_cli_defaults_and_wrapper_delegate_without_subprocess(self):
        with tempfile.TemporaryDirectory() as directory:
            root = Path(directory)
            config = self.config(root)
            args = cli.parse_args(
                [str(config.audio_file), "--whisper-model", str(config.whisper_model)]
            )
            expected = MvpRunResult(0, root / "run", root / "run/protocol.md")
            with patch.object(cli, "run_mvp_meeting", return_value=expected) as api:
                actual = cli.run(args, context_override=context_data())

            self.assertEqual(actual, (0, expected.run_dir, expected.protocol_path))
            delegated = api.call_args.args[0]
            self.assertEqual(delegated.diarization, "off")
            self.assertEqual(delegated.language, "de")
            self.assertEqual(delegated.whisper_executable, "whisper-cli")
            self.assertEqual(api.call_args.kwargs["meeting_context"], context_data())


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