"""React Intl detector."""

import json
from pathlib import Path
from typing import Optional

from i18n_guardian.detectors.base import Detector


class ReactIntlDetector(Detector):
    """Detect React Intl (react-intl) library usage."""

    @property
    def name(self) -> str:
        return "react-intl"

    @property
    def patterns(self) -> list:
        return ["package.json", "webpack.config.js", ".babelrc", ".babelrc.js"]

    def detect(self, path: Path) -> Optional[str]:
        """Check for React Intl usage."""
        package_json = path / "package.json"
        if package_json.exists():
            try:
                with open(package_json, "r", encoding="utf-8") as f:
                    data = json.load(f)
                    dependencies = data.get("dependencies", {})
                    dev_dependencies = data.get("devDependencies", {})
                    all_deps = {**dependencies, **dev_dependencies}
                    if "react-intl" in all_deps or "格式化消息" in str(all_deps):
                        return self.name
            except (json.JSONDecodeError, OSError):
                pass

        webpack_config = path / "webpack.config.js"
        if webpack_config.exists():
            try:
                content = webpack_config.read_text(encoding="utf-8")
                if "react-intl" in content or "FormattedMessage" in content:
                    return self.name
            except OSError:
                pass

        babelrc = path / ".babelrc"
        if babelrc.exists():
            try:
                with open(babelrc, "r", encoding="utf-8") as f:
                    content = f.read()
                    if "react-intl" in content:
                        return self.name
            except (json.JSONDecodeError, OSError):
                pass

        for js_file in path.rglob("*.js"):
            try:
                content = js_file.read_text(encoding="utf-8")
                if "import { defineMessages } from 'react-intl'" in content or "import { FormattedMessage } from 'react-intl'" in content:
                    return self.name
            except OSError:
                continue

        return None

    def get_i18n_functions(self) -> list:
        """Get React Intl function names."""
        return [
            "formatMessage",
            "defineMessages",
            "FormattedMessage",
            "FormattedDate",
            "FormattedTime",
            "FormattedRelativeTime",
            "FormattedNumber",
            "FormattedPlural",
            "FormattedHTMLMessage",
        ]