#!/usr/bin/env python3
"""
Clang Static Analyzer Parser - Deep C/C++ Bug Detection
"""

import os
import subprocess
import sys
from dataclasses import dataclass
from enum import Enum
from pathlib import Path
from typing import Any

from .. import base_parser


class BugType(Enum):
    """Clang Static Analyzer bug types."""

    MEMORY_LEAK = "memory_leak"
    USE_AFTER_FREE = "use_after_free"
    NULL_DEREFERENCE = "null_dereference"
    UNINITIALIZED_VALUE = "uninitialized_value"
    BUFFER_OVERFLOW = "buffer_overflow"
    RESOURCE_LEAK = "resource_leak"
    LOGIC_ERROR = "logic_error"
    SECURITY_ISSUE = "security_issue"


@dataclass
class AnalyzerFinding:
    """Represents a Clang Static Analyzer finding."""

    bug_type: BugType
    bug_category: str
    message: str
    file_path: str
    line_number: int
    column: int
    severity: str
    bug_path: list[dict[str, Any]] | None = None


@dataclass
class AnalyzerConfig:
    """Clang Static Analyzer configuration."""

    analyzer_version: str = "18.0.0"
    config_file: Path | None = None
    checkers_enabled: list[str] | None = None
    checkers_disabled: list[str] | None = None


class ClangStaticAnalyzerParser(base_parser.BaseParser):
    """
    Parser for Clang Static Analyzer deep bug detection.

    Detects memory leaks, use-after-free, null dereferences,
    and other bugs using deep symbolic execution analysis.
    """

    def __init__(self, file_path):
        super().__init__()
        self.file_path = file_path
        self.language = "cpp"
        self.config = AnalyzerConfig()
        self.findings: list[AnalyzerFinding] = []

    # [20260120_BUGFIX] Implemented abstract method to satisfy BaseParser interface
    def parse_code(self, code: str) -> None:
        """Stub implementation to satisfy BaseParser ABC."""
        pass

    def parse(self):
        try:
            clang_output = subprocess.check_output(
                ["clang-check", "-ast-dump=full", self.file_path],
                stderr=subprocess.STDOUT,
                universal_newlines=True,
            )
        except subprocess.CalledProcessError as e:
            print(f"Error: {e.output}")
            return

        self.parse_clang_output(clang_output)

    def parse_clang_output(self, clang_output):
        for line in clang_output.split("\n"):
            if line.strip().startswith("###"):
                self.handle_section_header(line.strip())
            elif line.strip().startswith("##"):
                self.handle_entity_header(line.strip())
            elif line.strip():
                self.handle_entity_line(line.strip())

    def handle_section_header(self, line):
        pass

    def handle_entity_header(self, line):
        pass

    def handle_entity_line(self, line):
        pass

    def execute_scan_build(self, paths: list[Path], config: AnalyzerConfig | None = None) -> list[AnalyzerFinding]:
        raise NotImplementedError("Phase 2: scan-build execution")

    def parse_plist_report(self, report_path: Path) -> list[AnalyzerFinding]:
        raise NotImplementedError("Phase 2: plist parsing")

    def extract_bug_paths(self, findings: list[AnalyzerFinding]) -> list[dict[str, Any]]:
        raise NotImplementedError("Phase 2: Bug path extraction")

    def detect_memory_issues(self, findings: list[AnalyzerFinding]) -> list[AnalyzerFinding]:
        raise NotImplementedError("Phase 2: Memory bug detection")

    def generate_report(self, findings: list[AnalyzerFinding], format: str = "json") -> str:
        raise NotImplementedError("Phase 2: Report generation")


if __name__ == "__main__":
    if len(sys.argv) != 2:
        print(f"Usage: {sys.argv[0]} <file_path>")
        sys.exit(1)
    file_path = sys.argv[1]
    if not os.path.isfile(file_path):
        print(f"Error: {file_path} is not a valid file path")
        sys.exit(1)

    parser = ClangStaticAnalyzerParser(file_path)
    parser.parse()
