"""File Operations Utility"""

import os
import shutil
import json
from pathlib import Path
from typing import List, Optional, Dict, Any
from datetime import datetime


class FileOps:
    """File operation utilities"""

    @staticmethod
    def read_text(file_path: str, encoding: str = "utf-8") -> str:
        """Read text content from file"""
        with open(file_path, "r", encoding=encoding) as f:
            return f.read()

    @staticmethod
    def write_text(file_path: str, content: str, encoding: str = "utf-8"):
        """Write text content to file"""
        Path(file_path).parent.mkdir(parents=True, exist_ok=True)
        with open(file_path, "w", encoding=encoding) as f:
            f.write(content)

    @staticmethod
    def read_json(file_path: str) -> Dict[str, Any]:
        """Read JSON file"""
        with open(file_path, "r", encoding="utf-8") as f:
            return json.load(f)

    @staticmethod
    def write_json(file_path: str, data: Dict[str, Any], indent: int = 2):
        """Write JSON file"""
        Path(file_path).parent.mkdir(parents=True, exist_ok=True)
        with open(file_path, "w", encoding="utf-8") as f:
            json.dump(data, f, indent=indent, ensure_ascii=False)

    @staticmethod
    def append_jsonl(file_path: str, data: Dict[str, Any]):
        """Append data as JSONL line"""
        Path(file_path).parent.mkdir(parents=True, exist_ok=True)
        with open(file_path, "a", encoding="utf-8") as f:
            f.write(json.dumps(data, ensure_ascii=False) + "\n")

    @staticmethod
    def read_jsonl(file_path: str) -> List[Dict[str, Any]]:
        """Read JSONL file"""
        results = []
        with open(file_path, "r", encoding="utf-8") as f:
            for line in f:
                if line.strip():
                    results.append(json.loads(line))
        return results

    @staticmethod
    def list_files(directory: str, pattern: str = "*") -> List[Path]:
        """List files in directory matching pattern"""
        return list(Path(directory).glob(pattern))

    @staticmethod
    def create_directory(path: str):
        """Create directory if it doesn't exist"""
        Path(path).mkdir(parents=True, exist_ok=True)

    @staticmethod
    def delete_file(path: str):
        """Delete file"""
        Path(path).unlink(missing_ok=True)

    @staticmethod
    def copy_file(src: str, dst: str):
        """Copy file"""
        Path(dst).parent.mkdir(parents=True, exist_ok=True)
        shutil.copy2(src, dst)

    @staticmethod
    def move_file(src: str, dst: str):
        """Move file"""
        Path(dst).parent.mkdir(parents=True, exist_ok=True)
        shutil.move(src, dst)

    @staticmethod
    def get_file_info(path: str) -> Dict[str, Any]:
        """Get file information"""
        p = Path(path)
        stat = p.stat()

        return {
            "path": str(p.absolute()),
            "name": p.name,
            "size": stat.st_size,
            "modified": datetime.fromtimestamp(stat.st_mtime).isoformat(),
            "is_file": p.is_file(),
            "is_dir": p.is_dir(),
        }

    @staticmethod
    def find_files(directory: str, extensions: List[str]) -> List[Path]:
        """Find files with specific extensions"""
        results = []
        for ext in extensions:
            results.extend(Path(directory).rglob(f"*.{ext}"))
        return results

    @staticmethod
    def get_directory_size(path: str) -> int:
        """Calculate directory size in bytes"""
        total = 0
        for p in Path(path).rglob("*"):
            if p.is_file():
                total += p.stat().st_size
        return total

    @staticmethod
    def clean_directory(path: str, keep_pattern: Optional[str] = None):
        """Clean directory, optionally keeping files matching pattern"""
        for item in Path(path).iterdir():
            if keep_pattern and item.match(keep_pattern):
                continue
            if item.is_file():
                item.unlink()
            elif item.is_dir():
                shutil.rmtree(item)