#!/usr/bin/env python3
"""Validate the recorded observations, including known extraction failures.

A successful verifier means the evidence is consistent. It does not mean every
extraction case passed. Use run.py to execute the extractor again.
"""
from hashlib import sha256
import json
from pathlib import Path

ROOT = Path(__file__).resolve().parent
report = json.loads((ROOT / "artifacts/results.json").read_text())
cases = {item["case_id"]: item for item in report["results"]}
for name, metadata in report["fixtures"].items():
    assert sha256((ROOT / "artifacts" / name).read_bytes()).hexdigest() == metadata["sha256"]

assert cases["digital-ruled-default"]["raw_exact_match"] is True
multi = cases["multipage-ruled-default"]
assert multi["raw_exact_match"] is True
assert len(multi["observed_pages"]) == 2
assert multi["explicit_stitching"]["exact_match"] is True

borderless = cases["borderless-default-lines"]
assert borderless["raw_exact_match"] is False
assert borderless["observed_pages"][0]["tables"] == []
text = cases["borderless-text-strategies"]
assert text["normalized_exact_match"] is False
assert text["normalized_tables_by_page"][0][0][0] == ["Item", "Quantity", "Unit"]
assert text["expected_tables_by_page"][0][0][0] == ["Item", "Quantity", "Unit price"]

rotated = cases["rotated-90-default"]
assert rotated["observed_pages"][0]["rotation"] == 90
assert rotated["raw_exact_match"] is False
assert len(rotated["observed_pages"][0]["tables"][0]) == 3
assert len(rotated["observed_pages"][0]["tables"][0][0]) == 4

image_only = cases["image-only-without-ocr"]
assert image_only["raw_exact_match"] is False
assert image_only["observed_pages"][0]["character_count"] == 0
assert image_only["observed_pages"][0]["image_count"] == 1
assert image_only["observed_pages"][0]["tables"] == []
print("Evidence verified: ruled cases match; borderless, rotated and image-only limitations reproduced.")