"""Smart Paste (스마트 붙여넣기) — BIG-AGI style."""

from __future__ import annotations

import json
import re
from typing import Any, Dict


def detect_paste_type(text: str) -> Dict[str, Any]:
    """Detect paste type."""
    text = text.strip()

    url_pattern = re.compile(r"^https?://\S+$")
    if url_pattern.match(text):
        return {
            "type": "url",
            "original": text,
            "suggestion": "fetch_content",
            "message": "🔗 URL detected. Fetch page content? / URL이 감지되었습니다. 페이지 내용을 가져올까요?",
        }

    lines = text.split("\n")
    urls = [l.strip() for l in lines if url_pattern.match(l.strip())]  # noqa: E741
    if len(urls) > 1:
        return {
            "type": "urls",
            "original": text,
            "urls": urls,
            "suggestion": "fetch_all",
            "message": f"🔗 {len(urls)} URLs detected. / {len(urls)}개의 URL이 감지되었습니다.",
        }

    code_indicators = {
        "python": [r"^\s*(import |from .+ import |def |class |if __name__)", r"print\("],
        "javascript": [r"^\s*(const |let |var |function |import |export |=>)", r"console\.log"],
        "typescript": [r"^\s*(interface |type |const .+:.+= |import .+ from)", r": string|: number|: boolean"],
        "html": [r"<(!DOCTYPE|html|head|body|div|span|script)", r"</\w+>"],
        "css": [r"\{[^}]*:[^}]*;\s*\}", r"\.([\w-]+)\s*\{"],
        "sql": [r"^\s*(SELECT|INSERT|UPDATE|DELETE|CREATE|DROP|ALTER)\s", r"\bFROM\b.*\bWHERE\b"],
        "shell": [r"^#!/bin/(ba)?sh", r"^\s*(echo |export |alias |sudo )"],
        "json": [r"^\s*[\[{]", r'"[^"]+"\s*:\s*'],
        "yaml": [r"^\w+:\s*$", r"^\s*-\s+\w+"],
    }

    for lang, patterns in code_indicators.items():
        matches = sum(1 for p in patterns if re.search(p, text, re.MULTILINE | re.IGNORECASE))
        if matches >= 1 and len(text) > 20:
            if lang == "json":
                try:
                    json.loads(text)
                    return {
                        "type": "code",
                        "language": "json",
                        "original": text,
                        "formatted": f"```json\n{text}\n```",
                        "suggestion": "wrap_code",
                        "message": "📋 JSON detected. / JSON이 감지되었습니다.",
                    }
                except json.JSONDecodeError:
                    continue
            elif matches >= 1 and any(re.search(p, text, re.MULTILINE) for p in patterns):
                return {
                    "type": "code",
                    "language": lang,
                    "original": text,
                    "formatted": f"```{lang}\n{text}\n```",
                    "suggestion": "wrap_code",
                    "message": f"💻 {lang.title()} code detected. / {lang.title()} 코드가 감지되었습니다.",
                }

    return {"type": "text", "original": text, "suggestion": None, "message": None}
