"""
Integration tests for papersdl plugin

Tests verify:
1. Hook script exists
2. Dependencies installed via validation hooks
3. Verify deps with abx-pkg
4. Paper extraction works on paper URLs
5. JSONL output is correct
6. Config options work
7. Handles non-paper URLs gracefully
"""

import json
import subprocess
import sys
import tempfile
from pathlib import Path
import pytest

PLUGIN_DIR = Path(__file__).parent.parent
PLUGINS_ROOT = PLUGIN_DIR.parent
PAPERSDL_HOOK = PLUGIN_DIR / 'on_Snapshot__54_papersdl.py'
PAPERSDL_VALIDATE_HOOK = PLUGIN_DIR / 'on_Crawl__00_validate_papersdl.py'
TEST_URL = 'https://example.com'

def test_hook_script_exists():
    """Verify on_Snapshot hook exists."""
    assert PAPERSDL_HOOK.exists(), f"Hook not found: {PAPERSDL_HOOK}"


def test_papersdl_validate_hook():
    """Test papers-dl validate hook checks for papers-dl."""
    # Run papers-dl validate hook
    result = subprocess.run(
        [sys.executable, str(PAPERSDL_VALIDATE_HOOK)],
        capture_output=True,
        text=True,
        timeout=30
    )

    # Hook exits 0 if all binaries found, 1 if any not found
    # Parse output for InstalledBinary and Dependency records
    found_binary = False
    found_dependency = False

    for line in result.stdout.strip().split('\n'):
        if line.strip():
            try:
                record = json.loads(line)
                if record.get('type') == 'InstalledBinary':
                    if record['name'] == 'papers-dl':
                        assert record['abspath'], "papers-dl should have abspath"
                        found_binary = True
                elif record.get('type') == 'Dependency':
                    if record['bin_name'] == 'papers-dl':
                        found_dependency = True
            except json.JSONDecodeError:
                pass

    # papers-dl should either be found (InstalledBinary) or missing (Dependency)
    assert found_binary or found_dependency, \
        "papers-dl should have either InstalledBinary or Dependency record"


def test_verify_deps_with_abx_pkg():
    """Verify papers-dl is available via abx-pkg."""
    from abx_pkg import Binary, PipProvider, EnvProvider, BinProviderOverrides

    missing_binaries = []

    # Verify papers-dl is available
    papersdl_binary = Binary(name='papers-dl', binproviders=[PipProvider(), EnvProvider()])
    papersdl_loaded = papersdl_binary.load()
    if not (papersdl_loaded and papersdl_loaded.abspath):
        missing_binaries.append('papers-dl')

    if missing_binaries:
        pytest.skip(f"Binaries not available: {', '.join(missing_binaries)} - Dependency records should have been emitted")


def test_handles_non_paper_url():
    """Test that papers-dl extractor handles non-paper URLs gracefully via hook."""
    # Prerequisites checked by earlier test

    with tempfile.TemporaryDirectory() as tmpdir:
        tmpdir = Path(tmpdir)

        # Run papers-dl extraction hook on non-paper URL
        result = subprocess.run(
            [sys.executable, str(PAPERSDL_HOOK), '--url', 'https://example.com', '--snapshot-id', 'test789'],
            cwd=tmpdir,
            capture_output=True,
            text=True,
            timeout=60
        )

        # Should exit 0 even for non-paper URL
        assert result.returncode == 0, f"Should handle non-paper URL gracefully: {result.stderr}"

        # Verify JSONL output
        assert 'STATUS=' in result.stdout, "Should report status"
        assert 'RESULT_JSON=' in result.stdout, "Should output RESULT_JSON"

        # Parse JSONL result
        result_json = None
        for line in result.stdout.split('\n'):
            if line.startswith('RESULT_JSON='):
                result_json = json.loads(line.split('=', 1)[1])
                break

        assert result_json, "Should have RESULT_JSON"
        assert result_json['extractor'] == 'papersdl'


def test_config_save_papersdl_false_skips():
    """Test that SAVE_PAPERSDL=False causes skip."""
    import os

    with tempfile.TemporaryDirectory() as tmpdir:
        env = os.environ.copy()
        env['SAVE_PAPERSDL'] = 'False'

        result = subprocess.run(
            [sys.executable, str(PAPERSDL_HOOK), '--url', TEST_URL, '--snapshot-id', 'test999'],
            cwd=tmpdir,
            capture_output=True,
            text=True,
            env=env,
            timeout=30
        )

        assert result.returncode == 0, f"Should exit 0 when skipping: {result.stderr}"
        assert 'STATUS=' in result.stdout


def test_config_timeout():
    """Test that PAPERSDL_TIMEOUT config is respected."""
    import os

    with tempfile.TemporaryDirectory() as tmpdir:
        env = os.environ.copy()
        env['PAPERSDL_TIMEOUT'] = '5'

        result = subprocess.run(
            [sys.executable, str(PAPERSDL_HOOK), '--url', 'https://example.com', '--snapshot-id', 'testtimeout'],
            cwd=tmpdir,
            capture_output=True,
            text=True,
            env=env,
            timeout=30
        )

        assert result.returncode == 0, "Should complete without hanging"

if __name__ == '__main__':
    pytest.main([__file__, '-v'])