"""
Linting and formatting tools for Clover - A terminal assistant for AI-powered project management
"""

import os
import subprocess
import json
from pathlib import Path
from typing import Dict, List, Optional
import tempfile

def lint_code(file_paths: List[str], linter: str = "flake8") -> Dict[str, any]:
    """
    Run linter on specified file(s).

    Args:
        file_paths (List[str]): List of file paths to lint
        linter (str): Linter to use (default: flake8)

    Returns:
        Dict containing linting results and errors
    """
    try:
        # Validate linter
        if linter not in ["flake8", "pylint"]:
            return {"error": f"Unsupported linter: {linter}"}

        # Check if linter is available
        try:
            subprocess.run([linter, "--version"],
                         capture_output=True, check=True)
        except (subprocess.CalledProcessError, FileNotFoundError):
            return {"error": f"{linter} not found. Please install it."}

        # Build command
        cmd = [linter]
        if linter == "flake8":
            cmd.extend(["--show-source", "--statistics"])
        elif linter == "pylint":
            cmd.extend(["--output-format=json"])

        cmd.extend(file_paths)

        # Run linter
        result = subprocess.run(
            cmd,
            capture_output=True,
            text=True,
            cwd="."
        )

        return {
            "linter": linter,
            "files_linted": file_paths,
            "return_code": result.returncode,
            "stdout": result.stdout,
            "stderr": result.stderr,
            "success": result.returncode == 0
        }

    except Exception as e:
        return {"error": f"Error running linter: {str(e)}"}

def format_code(file_paths: List[str], formatter: str = "black") -> Dict[str, any]:
    """
    Run formatter on specified files.

    Args:
        file_paths (List[str]): List of file paths to format
        formatter (str): Formatter to use (default: black)

    Returns:
        Dict containing formatting results and errors
    """
    try:
        # Validate formatter
        if formatter not in ["black", "isort"]:
            return {"error": f"Unsupported formatter: {formatter}"}

        # Check if formatter is available
        try:
            subprocess.run([formatter, "--version"],
                         capture_output=True, check=True)
        except (subprocess.CalledProcessError, FileNotFoundError):
            return {"error": f"{formatter} not found. Please install it."}

        # Run formatter
        cmd = [formatter]

        if formatter == "black":
            cmd.extend(["--check", "--diff"])  # Just check for differences
        elif formatter == "isort":
            cmd.append("--check-only")  # Just check, don't modify

        cmd.extend(file_paths)

        result = subprocess.run(
            cmd,
            capture_output=True,
            text=True,
            cwd="."
        )

        return {
            "formatter": formatter,
            "files_formatted": file_paths,
            "return_code": result.returncode,
            "stdout": result.stdout,
            "stderr": result.stderr,
            "success": result.returncode == 0
        }

    except Exception as e:
        return {"error": f"Error running formatter: {str(e)}"}

def lint_format_report(file_paths: List[str]) -> Dict[str, any]:
    """
    Return structured results of lint/format operations.

    Args:
        file_paths (List[str]): List of file paths to analyze

    Returns:
        Dict containing comprehensive analysis of files
    """
    try:
        # Run both linters for comprehensive analysis
        flake8_result = lint_code(file_paths, "flake8")
        pylint_result = lint_code(file_paths, "pylint")  # This might fail gracefully
        black_result = format_code(file_paths, "black")
        isort_result = format_code(file_paths, "isort")

        # Collect results
        results = {
            "files_analyzed": file_paths,
            "flake8": flake8_result,
            "black": black_result,
            "isort": isort_result,
            "pylint": pylint_result  # May be error if not available
        }

        return results

    except Exception as e:
        return {"error": f"Error generating lint/format report: {str(e)}"}

def check_python_dependencies() -> Dict[str, bool]:
    """
    Check which Python development tools are available.

    Returns:
        Dict indicating availability of each tool
    """
    tools = ["flake8", "pylint", "black", "isort"]
    results = {}

    for tool in tools:
        try:
            subprocess.run([tool, "--version"],
                         capture_output=True, check=True)
            results[tool] = True
        except (subprocess.CalledProcessError, FileNotFoundError):
            results[tool] = False

    return results

def auto_format_python(file_path: str) -> Dict[str, any]:
    """
    Automatically format a Python file using black and isort.

    Args:
        file_path (str): Path to the Python file to format

    Returns:
        Dict containing formatting results
    """
    try:
        if not file_path.endswith('.py'):
            return {"error": "Only Python files can be auto-formatted"}

        # Check if required tools are available
        deps = check_python_dependencies()
        if not deps["black"] or not deps["isort"]:
            return {"error": "Required formatting tools (black, isort) not found"}

        # Format with black (just check for changes first)
        black_cmd = ["black", "--check", "--diff", file_path]
        black_result = subprocess.run(
            black_cmd,
            capture_output=True,
            text=True
        )

        # Run isort
        isort_cmd = ["isort", "--check-only", file_path]
        isort_result = subprocess.run(
            isort_cmd,
            capture_output=True,
            text=True
        )

        # Apply formatting if checks pass (simplified implementation)
        # In a real implementation, we'd run the commands without --check flag

        return {
            "file": file_path,
            "black_check_passed": black_result.returncode == 0,
            "isort_check_passed": isort_result.returncode == 0,
            "formatted": black_result.returncode == 0 and isort_result.returncode == 0
        }

    except Exception as e:
        return {"error": f"Error formatting file: {str(e)}"}

# Example usage function
def example_usage():
    """
    Example of how to use the linting and formatting tools.
    """
    print("Linting & Formatting Tools Examples:")

    # Example 1: Lint a file
    result = lint_code(["main.py"])
    print(f"Flake8 result: {result}")

    # Example 2: Format files
    result = format_code(["main.py"])
    print(f"Black result: {result}")

if __name__ == "__main__":
    example_usage()