"""Photo metadata adapter tests against the synthetic EXIF-style dataset."""

from __future__ import annotations

import json
import shutil
from pathlib import Path

from helpers import blob

from pmp.adapters.photos import PhotosAdapter


def _record_count(data) -> int | None:
    """Number of photo records in the sample JSON, tolerant of either a
    top-level list or a single wrapping object containing a list."""
    if isinstance(data, list):
        return len(data)
    if isinstance(data, dict):
        for value in data.values():
            if isinstance(value, list):
                return len(value)
    return None


def test_sample_photos_ingest(samples_dir: Path):
    sample = samples_dir / "photos" / "avery-photos.json"
    items = list(PhotosAdapter().ingest(sample))
    assert len(items) >= 1

    expected = _record_count(json.loads(sample.read_text(encoding="utf-8")))
    if expected is not None:
        assert len(items) == expected, "one evidence item per photo record"

    rendered = [blob(item.content) for item in items]
    assert all(rendered)
    assert len(set(rendered)) == len(rendered), "photo evidence items must be distinct"


def test_items_carry_provenance_fields(samples_dir: Path):
    sample = samples_dir / "photos" / "avery-photos.json"
    for item in PhotosAdapter().ingest(sample):
        assert item.content
        assert item.source_ref
        assert "photo" in str(item.source_type).lower()


def test_ingest_is_deterministic(samples_dir: Path):
    sample = samples_dir / "photos" / "avery-photos.json"
    first = [blob(item.content) for item in PhotosAdapter().ingest(sample)]
    second = [blob(item.content) for item in PhotosAdapter().ingest(sample)]
    assert first == second


def test_identical_copy_yields_identical_content(samples_dir: Path, tmp_path: Path):
    """Content extracted from a byte-identical copy must match, which is the
    property node-level deduplication relies on."""
    sample = samples_dir / "photos" / "avery-photos.json"
    copy = tmp_path / "copy.json"
    shutil.copyfile(sample, copy)
    original = [blob(item.content) for item in PhotosAdapter().ingest(sample)]
    copied = [blob(item.content) for item in PhotosAdapter().ingest(copy)]
    assert original == copied