"""
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
import uuid
from pathlib import Path
import pytest

PLUGIN_DIR = Path(__file__).parent.parent
PLUGINS_ROOT = PLUGIN_DIR.parent
PAPERSDL_HOOK = next(PLUGIN_DIR.glob('on_Snapshot__*_papersdl.*'), None)
TEST_URL = 'https://example.com'

# Module-level cache for binary path
_papersdl_binary_path = None

def get_papersdl_binary_path():
    """Get the installed papers-dl binary path from cache or by running installation."""
    global _papersdl_binary_path
    if _papersdl_binary_path:
        return _papersdl_binary_path

    # Try to find papers-dl binary using abx-pkg
    from abx_pkg import Binary, PipProvider, EnvProvider, BinProviderOverrides

    try:
        binary = Binary(
            name='papers-dl',
            binproviders=[PipProvider(), EnvProvider()]
        ).load()

        if binary and binary.abspath:
            _papersdl_binary_path = str(binary.abspath)
            return _papersdl_binary_path
    except Exception:
        pass

    # If not found, try to install via pip
    pip_hook = PLUGINS_ROOT / 'pip' / 'on_Binary__install_using_pip_provider.py'
    if pip_hook.exists():
        binary_id = str(uuid.uuid4())
        machine_id = str(uuid.uuid4())

        cmd = [
            sys.executable, str(pip_hook),
            '--binary-id', binary_id,
            '--machine-id', machine_id,
            '--name', 'papers-dl'
        ]

        install_result = subprocess.run(
            cmd,
            capture_output=True,
            text=True,
            timeout=300
        )

        # Parse Binary from pip installation
        for install_line in install_result.stdout.strip().split('\n'):
            if install_line.strip():
                try:
                    install_record = json.loads(install_line)
                    if install_record.get('type') == 'Binary' and install_record.get('name') == 'papers-dl':
                        _papersdl_binary_path = install_record.get('abspath')
                        return _papersdl_binary_path
                except json.JSONDecodeError:
                    pass

    return None

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


def test_verify_deps_with_abx_pkg():
    """Verify papers-dl is installed by calling the REAL installation hooks."""
    binary_path = get_papersdl_binary_path()
    assert binary_path, "papers-dl must be installed successfully via install hook and pip provider"
    assert Path(binary_path).is_file(), f"Binary path must be a valid file: {binary_path}"


def test_handles_non_paper_url():
    """Test that papers-dl extractor handles non-paper URLs gracefully via hook."""
    import os

    binary_path = get_papersdl_binary_path()
    assert binary_path, "Binary must be installed for this test"

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

        env = os.environ.copy()
        env['PAPERSDL_BINARY'] = binary_path

        # 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,
            env=env,
            timeout=60
        )

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

        # Parse clean JSONL output
        result_json = None
        for line in result.stdout.strip().split('\n'):
            line = line.strip()
            if line.startswith('{'):
                try:
                    record = json.loads(line)
                    if record.get('type') == 'ArchiveResult':
                        result_json = record
                        break
                except json.JSONDecodeError:
                    pass

        assert result_json, "Should have ArchiveResult JSONL output"
        assert result_json['status'] == 'succeeded', f"Should succeed: {result_json}"


def test_config_save_papersdl_false_skips():
    """Test that PAPERSDL_ENABLED=False exits without emitting JSONL."""
    import os

    with tempfile.TemporaryDirectory() as tmpdir:
        env = os.environ.copy()
        env['PAPERSDL_ENABLED'] = '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 feature disabled: {result.stderr}"

        # Feature disabled - temporary failure, should NOT emit JSONL
        assert 'Skipping' in result.stderr or 'False' in result.stderr, "Should log skip reason to stderr"

        # Should NOT emit any JSONL
        jsonl_lines = [line for line in result.stdout.strip().split('\n') if line.strip().startswith('{')]
        assert len(jsonl_lines) == 0, f"Should not emit JSONL when feature disabled, but got: {jsonl_lines}"


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

    binary_path = get_papersdl_binary_path()
    assert binary_path, "Binary must be installed for this test"

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