"""
Test discrete_material_plan.extractor module functions

Tests pure functions for data extraction and post-processing.
Does not require actual browser or ERP connection.
"""

import sys
from pathlib import Path

# Add project root to Python path
PROJECT_ROOT = Path(__file__).resolve().parent.parent
sys.path.insert(0, str(PROJECT_ROOT))

# Load environment variables
from dotenv import load_dotenv
load_dotenv(PROJECT_ROOT / ".env")

# Configure browser path (not used in this test, but consistent with other tests)
import os
os.environ["PLAYWRIGHT_BROWSERS_PATH"] = os.getenv("PLAYWRIGHT_BROWSERS_PATH", "")

print("=" * 60)
print("Testing discrete_material_plan.extractor Functions")
print("=" * 60)

try:
    # Test 1: Import all functions
    print("\n[1/5] Importing extractor functions...")
    from utils.discrete_material_plan.extractor import (
        chunk_order_ids,
        get_login_url,
        extract_batch,
        extract_batches,
        extract_and_post_process,
        read_order_ids_from_file,
        extract_from_file,
    )
    print("[OK] All functions imported successfully")

    # Test 2: Test chunk_order_ids
    print("\n[2/5] Testing chunk_order_ids...")
    
    # Test normal chunking
    result = chunk_order_ids(["A", "B", "C", "D", "E"], 2)
    expected = [["A", "B"], ["C", "D"], ["E"]]
    assert result == expected, f"Expected {expected}, got {result}"
    print(f"  chunk_order_ids(['A','B','C','D','E'], 2) = {result}")
    
    # Test exact division
    result = chunk_order_ids(["A", "B", "C", "D"], 2)
    expected = [["A", "B"], ["C", "D"]]
    assert result == expected, f"Expected {expected}, got {result}"
    print(f"  chunk_order_ids(['A','B','C','D'], 2) = {result}")
    
    # Test batch size larger than list
    result = chunk_order_ids(["A", "B"], 10)
    expected = [["A", "B"]]
    assert result == expected, f"Expected {expected}, got {result}"
    print(f"  chunk_order_ids(['A','B'], 10) = {result}")
    
    # Test empty list
    result = chunk_order_ids([], 5)
    expected = []
    assert result == expected, f"Expected {expected}, got {result}"
    print(f"  chunk_order_ids([], 5) = {result}")
    
    print("[OK] chunk_order_ids works correctly")

    # Test 3: Test get_login_url
    print("\n[3/5] Testing get_login_url...")
    
    # Test with trailing slash
    result = get_login_url("https://erp.example.com/")
    expected = "https://erp.example.com/yonbip/resources/uap/rbac/login/main/index.html"
    assert result == expected, f"Expected {expected}, got {result}"
    print(f"  get_login_url('https://erp.example.com/') = {result}")
    
    # Test without trailing slash
    result = get_login_url("https://erp.example.com")
    assert result == expected, f"Expected {expected}, got {result}"
    print(f"  get_login_url('https://erp.example.com') = {result}")
    
    # Test with path
    result = get_login_url("https://erp.example.com/some/path/")
    expected = "https://erp.example.com/some/path/yonbip/resources/uap/rbac/login/main/index.html"
    assert result == expected, f"Expected {expected}, got {result}"
    print(f"  get_login_url('https://erp.example.com/some/path/') = {result}")
    
    print("[OK] get_login_url works correctly")

    # Test 4: Test read_order_ids_from_file
    print("\n[4/5] Testing read_order_ids_from_file...")
    
    # Create a temporary test file
    import tempfile
    with tempfile.NamedTemporaryFile(mode='w', suffix='.txt', delete=False, encoding='utf-8') as f:
        f.write("ID001\n")
        f.write("ID002\n")
        f.write("\n")  # Empty line
        f.write("ID003\n")
        f.write("  \n")  # Whitespace only
        f.write("ID004\n")
        temp_file = f.name
    
    try:
        result = read_order_ids_from_file(temp_file)
        expected = ["ID001", "ID002", "ID003", "ID004"]
        assert result == expected, f"Expected {expected}, got {result}"
        print(f"  read_order_ids_from_file(temp_file) = {result}")
        print("[OK] read_order_ids_from_file works correctly")
    finally:
        # Cleanup temp file
        Path(temp_file).unlink()
    
    # Test FileNotFoundError
    try:
        read_order_ids_from_file("nonexistent_file.txt")
        print("[FAIL] Should have raised FileNotFoundError")
        raise AssertionError("Should have raised FileNotFoundError")
    except FileNotFoundError:
        print(f"  read_order_ids_from_file('nonexistent') raises FileNotFoundError [OK]")

    # Test 5: Test module exports
    print("\n[5/5] Testing module exports...")
    from utils.discrete_material_plan import (
        chunk_order_ids as exported_chunk,
        get_login_url as exported_get_url,
        extract_batch as exported_extract_batch,
        extract_batches as exported_extract_batches,
        extract_and_post_process as exported_extract_and_post,
        read_order_ids_from_file as exported_read_ids,
        extract_from_file as exported_extract_file,
    )
    print("[OK] All functions exported correctly from module")

    print("\n" + "=" * 60)
    print("[SUCCESS] All extractor function tests passed!")
    print("=" * 60)
    print("\nNote: extract_batch, extract_batches, extract_and_post_process,")
    print("      and extract_from_file require actual browser session and")
    print("      are not tested here. Integration tests cover those cases.")

except Exception as e:
    print(f"\n[ERROR] Function test failed!")
    print(f"Error: {e}")
    import traceback
    traceback.print_exc()
    sys.exit(1)

print("\n" + "=" * 60)
print("Test completed successfully")
print("=" * 60)