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from __future__ import annotations

from pathlib import Path

import pytest

from app.container import build_container
from app.core.exceptions import ProcessingError
from app.models.media import OperationResult


@pytest.mark.asyncio
async def test_output_validation_probes_audio_artifact(settings, tmp_path: Path, monkeypatch) -> None:
    container = build_container(settings)
    output = tmp_path / "final.mp3"
    output.write_bytes(b"audio-placeholder")

    async def fake_probe(path: Path):
        assert path == output
        return {
            "duration": 12.5,
            "container": "mp3",
            "video_streams": [],
            "audio_streams": [{"codec": "mp3"}],
            "resolution": None,
        }

    monkeypatch.setattr(container.processor.ffprobe, "probe", fake_probe)
    report = await container.processor.validate_output_result(
        OperationResult(path=output, filename=output.name, mime_type="audio/mpeg")
    )

    assert report["valid"] is True
    assert report["probed"] is True
    assert report["size_bytes"] == output.stat().st_size
    assert report["audio_stream_count"] == 1
    assert report["duration_seconds"] == 12.5


@pytest.mark.asyncio
async def test_output_validation_rejects_audio_without_audio_stream(settings, tmp_path: Path, monkeypatch) -> None:
    container = build_container(settings)
    output = tmp_path / "broken.mp3"
    output.write_bytes(b"not-real-audio")

    async def fake_probe(path: Path):
        return {
            "duration": 1.0,
            "container": "mp3",
            "video_streams": [],
            "audio_streams": [],
            "resolution": None,
        }

    monkeypatch.setattr(container.processor.ffprobe, "probe", fake_probe)
    with pytest.raises(ProcessingError, match="no audio stream"):
        await container.processor.validate_output_result(
            OperationResult(path=output, filename=output.name, mime_type="audio/mpeg")
        )


@pytest.mark.asyncio
async def test_output_validation_rejects_empty_artifact(settings, tmp_path: Path) -> None:
    container = build_container(settings)
    output = tmp_path / "empty.mp4"
    output.write_bytes(b"")

    with pytest.raises(ProcessingError, match="empty"):
        await container.processor.validate_output_result(
            OperationResult(path=output, filename=output.name, mime_type="video/mp4")
        )