#!/usr/bin/env python
# -*- coding: utf-8 -*-
"""
Coverage test runner for MCP Gateway.

This script runs all tests and generates coverage reports in multiple formats.
"""

import os
import subprocess
import sys

# Fix Windows console encoding
if sys.platform == 'win32':
    import io
    sys.stdout = io.TextIOWrapper(sys.stdout.buffer, encoding='utf-8')
    sys.stderr = io.TextIOWrapper(sys.stderr.buffer, encoding='utf-8')


def build_coverage_commands():
    """Build coverage commands using the current Python interpreter."""
    return [
        (
            [sys.executable, '-m', 'coverage', 'run', '-m', 'unittest',
             'discover', '-s', 'tests', '-p', 'test_*.py'],
            'Running tests with coverage',
        ),
        (
            [sys.executable, '-m', 'coverage', 'report'],
            'Generating console coverage report',
        ),
        (
            [sys.executable, '-m', 'coverage', 'html'],
            'Generating HTML coverage report',
        ),
        (
            [sys.executable, '-m', 'coverage', 'xml'],
            'Generating XML coverage report (for CI/CD)',
        ),
    ]


def run_command(cmd, description):
    """Run a command and print status."""
    print(f"\n{'='*60}")
    print(f"[*] {description}")
    print(f"{'='*60}\n")

    result = subprocess.run(cmd, shell=False)

    if result.returncode != 0:
        print(f"\n[X] {description} failed!")
        return False

    print(f"\n[OK] {description} completed successfully!")
    return True


def main():
    """Main test runner."""
    print("\n=== MCP Gateway Coverage Test Runner ===")
    print("=" * 60)

    # Change to script directory
    script_dir = os.path.dirname(os.path.abspath(__file__))
    os.chdir(script_dir)

    # Step 1: Clean old coverage data
    if os.path.exists('.coverage'):
        os.remove('.coverage')
        print("[*] Cleaned old coverage data")

    for cmd, description in build_coverage_commands():
        if not run_command(cmd, description):
            return 1

    # Summary
    print("\n" + "=" * 60)
    print("=== Coverage Reports Generated ===")
    print("=" * 60)
    print("  [*] Console: (shown above)")
    print(f"  [*] HTML:    {os.path.join(script_dir, 'htmlcov', 'index.html')}")
    print(f"  [*] XML:     {os.path.join(script_dir, 'coverage.xml')}")
    print("=" * 60)

    # Open HTML report (optional)
    if '--open' in sys.argv or '-o' in sys.argv:
        html_path = os.path.join(script_dir, 'htmlcov', 'index.html')
        print("\n[*] Opening HTML report in browser...")

        if sys.platform == 'win32':
            os.startfile(html_path)
        elif sys.platform == 'darwin':
            subprocess.run(['open', html_path])
        else:
            subprocess.run(['xdg-open', html_path])

    print("\n[OK] All coverage reports generated successfully!")
    print("[TIP] Run 'python run_coverage.py --open' to open HTML report automatically\n")

    return 0


if __name__ == '__main__':
    sys.exit(main())