"""Shared language-guessing helpers for code fences and syntax highlighting."""

from __future__ import annotations

from pathlib import Path


LANGUAGE_MAPPING: dict[str, str] = {
    ".py": "python",
    ".js": "javascript",
    ".ts": "typescript",
    ".tsx": "tsx",
    ".jsx": "jsx",
    ".go": "go",
    ".rs": "rust",
    ".c": "c",
    ".cpp": "cpp",
    ".h": "c",
    ".java": "java",
    ".kt": "kotlin",
    ".sh": "bash",
    ".zsh": "bash",
    ".bash": "bash",
    ".md": "markdown",
    ".json": "json",
    ".yaml": "yaml",
    ".yml": "yaml",
    ".toml": "toml",
    ".html": "html",
    ".css": "css",
    ".scss": "scss",
    ".sql": "sql",
    ".dockerfile": "dockerfile",
    ".lock": "text",
    ".txt": "text",
    ".env": "bash",
}


def guess_language(path: Path | str) -> str:
    """Best-effort language tag for a file path or artifact name."""
    name = str(path)
    lower_name = name.lower()
    for ext, lang in LANGUAGE_MAPPING.items():
        if lower_name.endswith(ext):
            return lang
    return "text"