"""Unit tests for atomic file store and manifest generation covering scenarios OUT-001, OUT-011, OUT-012."""

import hashlib
from pathlib import Path

import pytest

from src.runtime.storage.file_store import (
    create_manifest_dict,
    persist_manifest_atomically,
    write_file_atomically,
)


def test_atomic_file_write_and_verification(tmp_path: Path):
    dest = tmp_path / "test_doc.md"
    content = "# Test Document Content"

    hash_hex, byte_count = write_file_atomically(dest, content)
    assert dest.exists()
    assert hash_hex == hashlib.sha256(content.encode("utf-8")).hexdigest()
    assert byte_count == len(content.encode("utf-8"))
    assert dest.read_text(encoding="utf-8") == content


def test_atomic_file_write_hash_mismatch_raises(tmp_path: Path):
    dest = tmp_path / "test_doc.md"
    content = "Hello World"
    wrong_hash = "0" * 64

    with pytest.raises(ValueError, match="Content hash mismatch"):
        write_file_atomically(dest, content, expected_hash=wrong_hash)


def test_persist_manifest_atomically(tmp_path: Path):
    fp = "f" * 64
    manifest = create_manifest_dict(
        fingerprint=fp,
        source_url="https://example.com/1",
        selected_extractor="trafilatura",
        final_status="completed_text",
        generate_markdown=True,
        markdown_path=str(tmp_path / f"{fp}.md"),
        markdown_hash="m" * 64,
        config_version="1.0.0",
        ecp_classification={
            "category": "DIRECT_INHERENT",
            "confidence": 1.0,
            "rationale": "ok",
            "evidences": [],
        },
        enrichment={"sentiment": "neutral", "tags": ["a", "b", "c"]},
        provider_versions={
            "hygiene": {
                "provider": "groq",
                "model": "llama-3.1-8b-instant",
                "role_config_version": "1.0.0",
            },
            "enrichment": {
                "provider": "deepseek",
                "model": "deepseek-chat",
                "role_config_version": "1.0.0",
            },
        },
        model_versions={
            "runtime_primary": {
                "provider": "groq",
                "model": "llama-3.1-8b-instant",
                "role_config_version": "1.0.0",
            },
            "runtime_fallback": {
                "provider": "deepseek",
                "model": "deepseek-chat",
                "role_config_version": "1.0.0",
            },
        },
        prompt_versions={
            "article_content_hygiene": {"version": "1.0.0", "hash": "h" * 64},
            "article_sentiment_tags": {"version": "1.0.0", "hash": "s" * 64},
        },
    )

    path, m_hash = persist_manifest_atomically(tmp_path, manifest)
    assert path.exists()
    assert path.name == f"{fp}.result.json"
    assert len(m_hash) == 64