from __future__ import annotations

import json
import subprocess
import sys
from pathlib import Path


ROOT = Path(__file__).resolve().parents[2]


def _polygon(x: float, y: float, size: float) -> dict:
    return {
        "type": "Polygon",
        "coordinates": [
            [
                [x, y],
                [x + size, y],
                [x + size, y + size],
                [x, y + size],
                [x, y],
            ]
        ],
    }


def _evidence_feature(
    role: str,
    feature_id: str,
    geometry: dict,
    *,
    tile_index: int = 1,
    confidence: float | None = None,
) -> dict:
    properties = {
        "qa_evidence_role": role,
        "candidate_feature_id": feature_id,
        "feature_class": "building",
        "tile_index": tile_index,
        "analysis_run_id": "run-1",
        "quality_check_id": "quality-1",
        "calibration_threshold": 0.15,
        "calibration_model_asset_id": "model-a",
    }
    if confidence is not None:
        properties["candidate_confidence"] = confidence
    return {
        "type": "Feature",
        "id": f"{role}:{feature_id}",
        "properties": properties,
        "geometry": geometry,
    }


def _write_portfolio(
    tmp_path: Path,
    features: list[dict],
    *,
    declared_false_positives: int,
) -> Path:
    evidence_dir = tmp_path / "samples" / "geel" / "evidence"
    evidence_dir.mkdir(parents=True)
    evidence_path = evidence_dir / "calibration_evidence.geojson"
    evidence_path.write_text(
        json.dumps({"type": "FeatureCollection", "features": features}),
        encoding="utf-8",
    )
    portfolio_path = tmp_path / "calibration_evidence_portfolio.json"
    portfolio_path.write_text(
        json.dumps(
            {
                "model_asset_id": "model-a",
                "model_sha256": "abc123",
                "samples": [
                    {
                        "sample_slug": "geel",
                        "role_counts": {
                            "false_positive": declared_false_positives,
                            "match_candidate": 1,
                        },
                        "evidence_geojson_path": str(evidence_path),
                    }
                ],
            }
        ),
        encoding="utf-8",
    )
    return portfolio_path


def test_detection_results_table_uses_bounded_local_pagination() -> None:
    lab = (ROOT / "frontend" / "src" / "components" / "detection" / "DetectionLab.tsx").read_text(
        encoding="utf-8"
    )
    styles = (ROOT / "frontend" / "src" / "styles" / "app.css").read_text(
        encoding="utf-8"
    )

    assert "DETECTION_PAGE_SIZE_OPTIONS" in lab
    assert "visibleDetectionItems" in lab
    assert "detectionItems.slice" in lab
    assert "Detection result pagination" in lab
    assert "Vorige resultatenpagina" in lab
    assert "Volgende resultatenpagina" in lab
    assert "formatSourceTilePath(detection.source_tile_path)" in lab
    assert 'title={detection.source_tile_path ?? undefined}' in lab
    assert "pagination-toolbar" in styles
    assert ".source-tile-cell" in styles
    assert "detectionItems.map((detection)" not in lab


def test_false_positive_audit_builds_reviewable_persisted_evidence(tmp_path: Path) -> None:
    script = ROOT / "scripts" / "audit_detection_false_positive_evidence.py"
    readiness = (ROOT / "scripts" / "run_readiness_check.sh").read_text(encoding="utf-8")
    dockerfile = (ROOT / "deploy" / "unraid" / "Dockerfile.all-in-one").read_text(
        encoding="utf-8"
    )
    assert script.exists()
    assert "py_compile scripts/audit_detection_false_positive_evidence.py" in readiness
    assert "COPY scripts/audit_detection_false_positive_evidence.py" in dockerfile

    features = [
        _evidence_feature(
            "false_positive",
            "fp-small",
            _polygon(5.0, 51.2, 0.0001),
            tile_index=4,
            confidence=0.27,
        ),
        _evidence_feature(
            "false_positive",
            "fp-large",
            _polygon(5.001, 51.2, 0.0003),
            tile_index=4,
            confidence=0.81,
        ),
        _evidence_feature(
            "match_candidate",
            "matched",
            _polygon(5.002, 51.2, 0.0002),
            tile_index=7,
        ),
    ]
    portfolio_path = _write_portfolio(
        tmp_path / "portfolio",
        features,
        declared_false_positives=2,
    )
    output_dir = tmp_path / "audit"
    result = subprocess.run(
        [
            sys.executable,
            str(script),
            "--portfolio",
            str(portfolio_path),
            "--output-dir",
            str(output_dir),
        ],
        cwd=ROOT,
        check=True,
        capture_output=True,
        text=True,
    )

    report = json.loads(
        (output_dir / "detection_false_positive_audit.json").read_text(encoding="utf-8")
    )
    assert report["model_asset_id"] == "model-a"
    assert report["model_sha256"] == "abc123"
    assert report["false_positive_count"] == 2
    assert report["candidate_count"] == 3
    assert report["false_positive_rate"] == 2 / 3
    assert report["confidence_coverage_count"] == 2
    assert report["confidence"]["median"] == 0.54
    assert report["source_tile_counts"] == {"geel:4": 2}
    assert sum(bucket["count"] for bucket in report["area_buckets"].values()) == 2
    assert report["samples"][0]["false_positive_area_m2"]["median"] > 0
    assert report["recommendations"]

    geojson = json.loads(
        (output_dir / "false_positives.geojson").read_text(encoding="utf-8")
    )
    assert geojson["type"] == "FeatureCollection"
    assert len(geojson["features"]) == 2
    assert all(
        feature["properties"]["qa_evidence_role"] == "false_positive"
        for feature in geojson["features"]
    )
    assert all(feature["properties"]["sample_slug"] == "geel" for feature in geojson["features"])
    assert all(feature["properties"]["area_m2"] > 0 for feature in geojson["features"])
    assert "False-positive audit JSON" in result.stdout
    assert (output_dir / "detection_false_positive_audit.md").is_file()


def test_false_positive_audit_rejects_declared_role_count_drift(tmp_path: Path) -> None:
    script = ROOT / "scripts" / "audit_detection_false_positive_evidence.py"
    portfolio_path = _write_portfolio(
        tmp_path / "portfolio",
        [
            _evidence_feature(
                "false_positive",
                "fp-one",
                _polygon(5.0, 51.2, 0.0001),
            )
        ],
        declared_false_positives=2,
    )

    result = subprocess.run(
        [
            sys.executable,
            str(script),
            "--portfolio",
            str(portfolio_path),
            "--output-dir",
            str(tmp_path / "audit"),
        ],
        cwd=ROOT,
        check=False,
        capture_output=True,
        text=True,
    )

    assert result.returncode != 0
    assert "declares 2 false positives but evidence contains 1" in result.stderr