#!/usr/bin/env python3
"""
Psalm Parser - PHP type checker by Vimeo with advanced analysis.

Psalm is a static analysis tool for finding errors in PHP code developed by Vimeo.
It combines type inference with comprehensive static analysis to catch
logical errors that dynamic analysis might miss.

Psalm Features:
    - Type inference and checking
    - Taint analysis for security vulnerabilities
    - Dead code detection
    - Unused variable detection
    - Complex type analysis (Union, Intersection, Generics)
    - Multiple output formats (JSON, JSON-pretty, XML, emacs, etc.)

Phase 2 Enhancement Areas:


"""

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


class PsalmSeverity(Enum):
    """Psalm error severity levels."""

    ERROR = "error"
    WARNING = "warning"
    INFO = "info"


class PsalmErrorType(Enum):
    """Psalm error type categories."""

    TYPE_ERROR = "type_error"
    TAINT = "taint"
    DEAD_CODE = "dead_code"
    UNDEFINED = "undefined"
    SECURITY = "security"
    LOGIC = "logic"
    UNKNOWN = "unknown"


@dataclass
class PsalmError:
    """Represents a single Psalm analysis error."""

    message: str
    file_path: str | None = None
    line_number: int | None = None
    column: int | None = None
    severity: str | None = None
    error_type: str | None = None
    snippet: str | None = None


@dataclass
class PsalmConfig:
    """Psalm configuration settings."""

    config_file: Path | None = None
    level: int = 1
    analysis_type: str = "normal"
    paths: list[str] = field(default_factory=list)
    excluded_paths: list[str] = field(default_factory=list)
    plugins: list[str] = field(default_factory=list)


class PsalmParser:
    """Parser for Psalm static analysis results."""

    def __init__(self):
        """Initialize Psalm parser."""
        self.errors: list[PsalmError] = []
        self.config: PsalmConfig | None = None

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

    def parse_json_pretty(self, json_data: str) -> list[PsalmError]:
        raise NotImplementedError("Phase 2: Psalm JSON-pretty parsing")

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

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

    def analyze_taint(self) -> list[dict[str, Any]]:
        raise NotImplementedError("Phase 2: Psalm taint analysis")

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