#!/usr/bin/env python3.9
# -*- coding: utf-8 -*-
"""
Test template from file functionality
"""

import os
from pyenjoy.template.Engine import Engine
from pyenjoy.kit.Kv import Kv

def test_file_template():
    """Test template from file"""
    print("Testing template from file...")
    
    # Create a test template file
    test_dir = "./test_templates"
    os.makedirs(test_dir, exist_ok=True)
    
    # Test case 1: Basic template
    test_file1 = os.path.join(test_dir, "test1.txt")
    with open(test_file1, "w", encoding="utf-8") as f:
        f.write("Hello, #(name)!")
    
    # Test case 2: Template with null coalescing
    test_file2 = os.path.join(test_dir, "test2.txt")
    with open(test_file2, "w", encoding="utf-8") as f:
        f.write("Data: #(data??'未知')")
    
    # Test case 3: Template with multiple expressions
    test_file3 = os.path.join(test_dir, "test3.txt")
    with open(test_file3, "w", encoding="utf-8") as f:
        f.write("Name: #(name), Age: #(age??'未知'), City: #(city??'未知')")
    
    # Create engine and configure base template path
    engine = Engine.use()
    engine.base_template_path = os.getcwd()
    
    # Test cases
    test_cases = [
        # (file_path, data, expected_result, description)
        (test_file1, {"name": "World"}, "Hello, World!", "Basic template"),
        (test_file2, {"data": None}, "Data: 未知", "Null coalescing with None"),
        (test_file2, {"data": "测试数据"}, "Data: 测试数据", "Null coalescing with value"),
        (test_file2, {}, "Data: 未知", "Null coalescing with undefined variable"),
        (test_file3, {"name": "张三", "age": 30}, "Name: 张三, Age: 30, City: 未知", "Multiple expressions"),
    ]
    
    passed = 0
    failed = 0
    
    for i, (file_path, data, expected, description) in enumerate(test_cases):
        try:
            print(f"\nTest {i+1}: {description}")
            print(f"File: {file_path}")
            print(f"Data: {data}")
            
            # Get template
            template = engine.get_template(file_path)
            
            # Render template
            result = template.render_to_string(Kv(data))
            
            print(f"Expected: '{expected}'")
            print(f"Got:      '{result}'")
            
            if result == expected:
                print("✓ Passed")
                passed += 1
            else:
                print("✗ Failed")
                failed += 1
                
                # Debug: Check content
                print(f"\nDebug info:")
                with open(file_path, 'r', encoding='utf-8') as f:
                    content = f.read()
                print(f"File content: '{content}'")
                print(f"Content length: {len(content)}")
                print(f"Content repr: {repr(content)}")
                
        except Exception as e:
            print(f"✗ Error: {e}")
            failed += 1
    
    print(f"\nSummary: {passed} passed, {failed} failed")
    
    # Clean up
    for file_path in [test_file1, test_file2, test_file3]:
        if os.path.exists(file_path):
            os.remove(file_path)
    if os.path.exists(test_dir):
        os.rmdir(test_dir)
    
    return passed == len(test_cases)

if __name__ == "__main__":
    success = test_file_template()
    exit(0 if success else 1)