from __future__ import annotations

import json
import sys
from pathlib import Path

ROOT = Path(__file__).resolve().parents[1]
sys.path.insert(0, str(ROOT / "scripts"))

from hai_gate import Status, evaluate, main, render_owner_packet


def test_blocks_secret_file_without_owner_approval() -> None:
    result = evaluate(
        changed_files=[".env", "src/app.py"],
        pr_body="""
## Goal
Change app config.

## Verification
Tests run: pytest
Result: passed
""",
    )

    assert result.status == Status.BLOCK
    assert result.should_block is True


def test_code_change_without_test_evidence_requires_evidence() -> None:
    result = evaluate(
        changed_files=["src/payments/retry.py"],
        pr_body="""
## Goal
Fix retry handling.

## Verification
Not run.
""",
    )

    assert result.status == Status.EVIDENCE_REQUIRED
    assert result.should_block is True


def test_large_scope_requires_owner_decision() -> None:
    result = evaluate(
        changed_files=[f"docs/file_{idx}.md" for idx in range(13)],
        pr_body="""
## Goal
Refresh docs.

## Verification
Docs-only review.
Result: passed.
""",
    )

    assert result.status == Status.OWNER_DECISION
    assert result.should_block is True


def test_docs_with_evidence_passes() -> None:
    result = evaluate(
        changed_files=["README.md"],
        pr_body="""
## Goal
Clarify usage.

## Verification
Tests run: docs-only check
Result: passed

## Risk
Low.
""",
    )

    assert result.status == Status.PASS
    assert result.should_block is False


def test_follow_up_is_parked_but_not_blocking() -> None:
    result = evaluate(
        changed_files=["README.md"],
        pr_body="""
## Goal
Clarify usage.

## Verification
Tests run: docs-only check
Result: passed

## Follow-up
- Nice-to-have: add screenshots later.
""",
    )

    assert result.status == Status.PARK
    assert result.should_block is False
    assert "nice-to-have" in result.findings[0].evidence.lower()


def test_owner_approval_allows_risky_file_when_evidence_exists() -> None:
    result = evaluate(
        changed_files=[".github/workflows/test.yml"],
        pr_body="""
## Goal
Add CI.

## Verification
Tests run: python scripts/hai_gate.py
Result: passed

## Owner decision
Approved-by: Samuel
""",
    )

    assert result.status == Status.PASS


def test_owner_packet_has_single_decision() -> None:
    result = evaluate(changed_files=["src/app.py"], pr_body="")
    packet = render_owner_packet(result)

    assert "## HAI Owner Packet" in packet
    assert "### One Decision" in packet
    assert "Do not merge" in packet
    assert "Merge is blocked" in packet


def test_cli_writes_summary_and_blocks(tmp_path: Path) -> None:
    event = tmp_path / "event.json"
    files = tmp_path / "files.txt"
    summary = tmp_path / "summary.md"
    event.write_text(json.dumps({"pull_request": {"body": ""}}), encoding="utf-8")
    files.write_text("src/app.py\n", encoding="utf-8")

    code = main(["--event", str(event), "--files", str(files), "--summary", str(summary)])

    assert code == 1
    assert "EVIDENCE_REQUIRED" in summary.read_text(encoding="utf-8")