#!/usr/bin/env python3
"""
PHPStan Parser - PHP static type checker and code analysis.

PHPStan is a PHP static analysis tool that catches whole classes of bugs
even before you write tests for the code. It focuses on type safety and
finding logical errors without requiring annotations.

PHPStan Features:
    - Type inference and checking (without PHPDoc)
    - Dead code detection
    - Possible errors detection
    - Self-analysis rule generation
    - Extensible rulesets (0-8 levels)
    - Multiple output formats (JSON, JSON-inline, table, checkstyle, etc.)

Phase 2 Enhancement Areas:


"""

from dataclasses import dataclass, field
from enum import Enum
from pathlib import Path
from typing import Any


class PHPStanLevel(Enum):
    """PHPStan analysis levels (0=most lenient, 8=strictest)."""

    LEVEL0 = 0
    LEVEL1 = 1
    LEVEL2 = 2
    LEVEL3 = 3
    LEVEL4 = 4
    LEVEL5 = 5
    LEVEL6 = 6
    LEVEL7 = 7
    LEVEL8 = 8


class PHPStanErrorType(Enum):
    """PHPStan error type categories."""

    TYPE_ERROR = "type_error"
    DEAD_CODE = "dead_code"
    UNDEFINED = "undefined"
    LOGIC_ERROR = "logic_error"
    METHOD_SIGNATURE = "method_signature"
    PROPERTY_ACCESS = "property_access"
    UNKNOWN = "unknown"


@dataclass
class PHPStanError:
    """Represents a single PHPStan analysis error."""

    message: str
    file_path: str | None = None
    line_number: int | None = None
    error_type: str | None = None
    level: int | None = None
    rule: str | None = None


@dataclass
class PHPStanConfig:
    """PHPStan configuration settings."""

    config_file: Path | None = None
    analysis_level: int = 5
    paths: list[str] = field(default_factory=list)
    excluded_paths: list[str] = field(default_factory=list)
    memory_limit: str = "2GB"


class PHPStanParser:
    """Parser for PHPStan static analysis results."""

    def __init__(self):
        """Initialize PHPStan parser."""
        self.errors: list[PHPStanError] = []
        self.config: PHPStanConfig | None = None

    def parse_json_report(self, json_data: str) -> list[PHPStanError]:
        raise NotImplementedError("Phase 2: PHPStan JSON parsing")

    def parse_json_inline(self, json_data: str) -> list[PHPStanError]:
        raise NotImplementedError("Phase 2: PHPStan JSON-inline parsing")

    def load_config(self, config_path: Path) -> PHPStanConfig:
        raise NotImplementedError("Phase 2: PHPStan config parsing")

    def execute_phpstan(self, paths: list[str]) -> dict[str, Any]:
        raise NotImplementedError("Phase 2: PHPStan execution")

    def generate_type_coverage(self) -> dict[str, Any]:
        raise NotImplementedError("Phase 2: PHPStan type coverage")

    def generate_report(self) -> str:
        raise NotImplementedError("Phase 2: PHPStan report generation")
