import React, { useEffect, useState } from "react";
import { useTranslation } from "react-i18next";
import { Provider } from "../types";
import { Play, Edit3, Trash2, CheckCircle2, Users, Check } from "lucide-react";
import { buttonStyles, cardStyles, badgeStyles, cn } from "../lib/styles";
import { AppType } from "../lib/tauri-api";
// 不再在列表中显示分类徽章，避免造成困惑

interface ProviderListProps {
  providers: Record<string, Provider>;
  currentProviderId: string;
  onSwitch: (id: string) => void;
  onDelete: (id: string) => void;
  onEdit: (id: string) => void;
  appType?: AppType;
  onNotify?: (
    message: string,
    type: "success" | "error",
    duration?: number
  ) => void;
}

const ProviderList: React.FC<ProviderListProps> = ({
  providers,
  currentProviderId,
  onSwitch,
  onDelete,
  onEdit,
  appType,
  onNotify,
}) => {
  const { t } = useTranslation();
  // 提取API地址（兼容不同供应商配置：Claude env / Codex TOML）
  const getApiUrl = (provider: Provider): string => {
    try {
      const cfg = provider.settingsConfig;
      // Claude/Anthropic: 从 env 中读取
      if (cfg?.env?.ANTHROPIC_BASE_URL) {
        return cfg.env.ANTHROPIC_BASE_URL;
      }
      // Codex: 从 TOML 配置中解析 base_url
      if (typeof cfg?.config === "string" && cfg.config.includes("base_url")) {
        // 支持单/双引号
        const match = cfg.config.match(/base_url\s*=\s*(['"])([^'\"]+)\1/);
        if (match && match[2]) return match[2];
      }
      return t("provider.notConfigured");
    } catch {
      return t("provider.configError");
    }
  };

  const handleUrlClick = async (url: string) => {
    try {
      await window.api.openExternal(url);
    } catch (error) {
      console.error(t("console.openLinkFailed"), error);
    }
  };

  const [claudeApplied, setClaudeApplied] = useState<boolean>(false);

  // 检查 Claude 插件配置是否已应用
  useEffect(() => {
    const checkClaude = async () => {
      if (appType !== "claude" || !currentProviderId) {
        setClaudeApplied(false);
        return;
      }
      try {
        const applied = await window.api.isClaudePluginApplied();
        setClaudeApplied(applied);
      } catch (error) {
        console.error(t("console.setupListenerFailed"), error);
        setClaudeApplied(false);
      }
    };
    checkClaude();
  }, [appType, currentProviderId, providers, t]);

  const handleApplyToClaudePlugin = async () => {
    try {
      await window.api.applyClaudePluginConfig({ official: false });
      onNotify?.(t("notifications.appliedToClaudePlugin"), "success", 3000);
      setClaudeApplied(true);
    } catch (error: any) {
      console.error(error);
      const msg =
        error && error.message
          ? error.message
          : t("notifications.syncClaudePluginFailed");
      onNotify?.(msg, "error", 5000);
    }
  };

  const handleRemoveFromClaudePlugin = async () => {
    try {
      await window.api.applyClaudePluginConfig({ official: true });
      onNotify?.(t("notifications.removedFromClaudePlugin"), "success", 3000);
      setClaudeApplied(false);
    } catch (error: any) {
      console.error(error);
      const msg =
        error && error.message
          ? error.message
          : t("notifications.syncClaudePluginFailed");
      onNotify?.(msg, "error", 5000);
    }
  };

  // 对供应商列表进行排序
  const sortedProviders = Object.values(providers).sort((a, b) => {
    // 按添加时间排序
    // 没有时间戳的视为最早添加的（排在最前面）
    // 有时间戳的按时间升序排列
    const timeA = a.createdAt || 0;
    const timeB = b.createdAt || 0;

    // 如果都没有时间戳，按名称排序
    if (timeA === 0 && timeB === 0) {
      return a.name.localeCompare(b.name, "zh-CN");
    }

    // 如果只有一个没有时间戳，没有时间戳的排在前面
    if (timeA === 0) return -1;
    if (timeB === 0) return 1;

    // 都有时间戳，按时间升序
    return timeA - timeB;
  });

  return (
    <div className="space-y-4">
      {sortedProviders.length === 0 ? (
        <div className="text-center py-12">
          <div className="w-16 h-16 mx-auto mb-4 bg-gray-100 rounded-full flex items-center justify-center">
            <Users size={24} className="text-gray-400" />
          </div>
          <h3 className="text-lg font-medium text-gray-900 dark:text-gray-100 mb-2">
            {t("provider.noProviders")}
          </h3>
          <p className="text-gray-500 dark:text-gray-400 text-sm">
            {t("provider.noProvidersDescription")}
          </p>
        </div>
      ) : (
        <div className="space-y-3">
          {sortedProviders.map((provider) => {
            const isCurrent = provider.id === currentProviderId;
            const apiUrl = getApiUrl(provider);

            return (
              <div
                key={provider.id}
                className={cn(
                  isCurrent ? cardStyles.selected : cardStyles.interactive
                )}
              >
                <div className="flex items-start justify-between">
                  <div className="flex-1">
                    <div className="flex items-center gap-3 mb-2">
                      <h3 className="font-medium text-gray-900 dark:text-gray-100">
                        {provider.name}
                      </h3>
                      {/* 分类徽章已移除 */}
                      <div
                        className={cn(
                          badgeStyles.success,
                          !isCurrent && "invisible"
                        )}
                      >
                        <CheckCircle2 size={12} />
                        {t("provider.currentlyUsing")}
                      </div>
                    </div>

                    <div className="flex items-center gap-2 text-sm">
                      {provider.websiteUrl ? (
                        <button
                          onClick={(e) => {
                            e.preventDefault();
                            handleUrlClick(provider.websiteUrl!);
                          }}
                          className="inline-flex items-center gap-1 text-blue-500 dark:text-blue-400 hover:opacity-90 transition-colors"
                          title={t("providerForm.visitWebsite", { url: provider.websiteUrl })}
                        >
                          {provider.websiteUrl}
                        </button>
                      ) : (
                        <span
                          className="text-gray-500 dark:text-gray-400"
                          title={apiUrl}
                        >
                          {apiUrl}
                        </span>
                      )}
                    </div>
                  </div>

                  <div className="flex items-center gap-2 ml-4">
                    {appType === "claude" ? (
                      <div className="flex-shrink-0">
                        {provider.category !== "official" && isCurrent && (
                          <button
                            onClick={() =>
                              claudeApplied
                                ? handleRemoveFromClaudePlugin()
                                : handleApplyToClaudePlugin()
                            }
                            className={cn(
                              "inline-flex items-center gap-1 px-3 py-1.5 text-sm font-medium rounded-md transition-colors w-full whitespace-nowrap justify-center",
                              claudeApplied
                                ? "border border-gray-300 text-gray-600 hover:border-red-300 hover:text-red-600 hover:bg-red-50 dark:border-gray-600 dark:text-gray-400 dark:hover:border-red-800 dark:hover:text-red-400 dark:hover:bg-red-900/20"
                                : "border border-gray-300 text-gray-700 hover:border-green-300 hover:text-green-600 hover:bg-green-50 dark:border-gray-600 dark:text-gray-300 dark:hover:border-green-700 dark:hover:text-green-400 dark:hover:bg-green-900/20"
                            )}
                            title={
                              claudeApplied
                                ? t("provider.removeFromClaudePlugin")
                                : t("provider.applyToClaudePlugin")
                            }
                          >
                            {claudeApplied
                              ? t("provider.removeFromClaudePlugin")
                              : t("provider.applyToClaudePlugin")}
                          </button>
                        )}
                      </div>
                    ) : null}
                    <button
                      onClick={() => onSwitch(provider.id)}
                      disabled={isCurrent}
                      className={cn(
                        "inline-flex items-center gap-1.5 px-3 py-1.5 text-sm font-medium rounded-md transition-colors w-[90px] justify-center whitespace-nowrap",
                        isCurrent
                          ? "bg-gray-100 text-gray-400 dark:bg-gray-800 dark:text-gray-500 cursor-not-allowed"
                          : "bg-blue-500 text-white hover:bg-blue-600 dark:bg-blue-600 dark:hover:bg-blue-700"
                      )}
                    >
                      {isCurrent ? <Check size={14} /> : <Play size={14} />}
                      {isCurrent ? t("provider.inUse") : t("provider.enable")}
                    </button>

                    <button
                      onClick={() => onEdit(provider.id)}
                      className={buttonStyles.icon}
                      title={t("provider.editProvider")}
                    >
                      <Edit3 size={16} />
                    </button>

                    <button
                      onClick={() => onDelete(provider.id)}
                      disabled={isCurrent}
                      className={cn(
                        buttonStyles.icon,
                        isCurrent
                          ? "text-gray-400 cursor-not-allowed"
                          : "text-gray-500 hover:text-red-500 hover:bg-red-100 dark:text-gray-400 dark:hover:text-red-400 dark:hover:bg-red-500/10"
                      )}
                      title={t("provider.deleteProvider")}
                    >
                      <Trash2 size={16} />
                    </button>
                  </div>
                </div>
              </div>
            );
          })}
        </div>
      )}
    </div>
  );
};

export default ProviderList;