import { useCallback, useEffect, useMemo, useState } from "react";
import { useTranslation } from "react-i18next";
import { Save } from "lucide-react";
import { Button } from "@/components/ui/button";
import { FullScreenPanel } from "@/components/common/FullScreenPanel";
import type { Provider } from "@/types";
import {
  ProviderForm,
  type ProviderFormValues,
} from "@/components/providers/forms/ProviderForm";
import { providersApi, vscodeApi, type AppId } from "@/lib/api";

interface EditProviderDialogProps {
  open: boolean;
  provider: Provider | null;
  onOpenChange: (open: boolean) => void;
  onSubmit: (provider: Provider) => Promise<void> | void;
  appId: AppId;
}

export function EditProviderDialog({
  open,
  provider,
  onOpenChange,
  onSubmit,
  appId,
}: EditProviderDialogProps) {
  const { t } = useTranslation();

  // 默认使用传入的 provider.settingsConfig，若当前编辑对象是"当前生效供应商"，则尝试读取实时配置替换初始值
  const [liveSettings, setLiveSettings] = useState<Record<
    string,
    unknown
  > | null>(null);

  useEffect(() => {
    let cancelled = false;
    const load = async () => {
      if (!open || !provider) {
        setLiveSettings(null);
        return;
      }
      try {
        const currentId = await providersApi.getCurrent(appId);
        if (currentId && provider.id === currentId) {
          try {
            const live = (await vscodeApi.getLiveProviderSettings(
              appId,
            )) as Record<string, unknown>;
            if (!cancelled && live && typeof live === "object") {
              setLiveSettings(live);
            }
          } catch {
            // 读取实时配置失败则回退到 SSOT（不打断编辑流程）
            if (!cancelled) setLiveSettings(null);
          }
        } else {
          if (!cancelled) setLiveSettings(null);
        }
      } finally {
        // no-op
      }
    };
    void load();
    return () => {
      cancelled = true;
    };
  }, [open, provider, appId]);

  const initialSettingsConfig = useMemo(() => {
    return (liveSettings ?? provider?.settingsConfig ?? {}) as Record<
      string,
      unknown
    >;
  }, [liveSettings, provider]);

  const handleSubmit = useCallback(
    async (values: ProviderFormValues) => {
      if (!provider) return;

      const parsedConfig = JSON.parse(values.settingsConfig) as Record<
        string,
        unknown
      >;

      const updatedProvider: Provider = {
        ...provider,
        name: values.name.trim(),
        notes: values.notes?.trim() || undefined,
        websiteUrl: values.websiteUrl?.trim() || undefined,
        settingsConfig: parsedConfig,
        icon: values.icon?.trim() || undefined,
        iconColor: values.iconColor?.trim() || undefined,
        ...(values.presetCategory ? { category: values.presetCategory } : {}),
        // 保留或更新 meta 字段
        ...(values.meta ? { meta: values.meta } : {}),
      };

      await onSubmit(updatedProvider);
      onOpenChange(false);
    },
    [onSubmit, onOpenChange, provider],
  );

  if (!provider) {
    return null;
  }

  return (
    <FullScreenPanel
      isOpen={open}
      title={t("provider.editProvider")}
      onClose={() => onOpenChange(false)}
      footer={
        <Button
          type="submit"
          form="provider-form"
          className="bg-primary text-primary-foreground hover:bg-primary/90"
        >
          <Save className="h-4 w-4 mr-2" />
          {t("common.save")}
        </Button>
      }
    >
      <ProviderForm
        appId={appId}
        providerId={provider.id}
        submitLabel={t("common.save")}
        onSubmit={handleSubmit}
        onCancel={() => onOpenChange(false)}
        initialData={{
          name: provider.name,
          notes: provider.notes,
          websiteUrl: provider.websiteUrl,
          // 若读取到实时配置则优先使用
          settingsConfig: initialSettingsConfig,
          category: provider.category,
          meta: provider.meta,
          icon: provider.icon,
          iconColor: provider.iconColor,
        }}
        showButtons={false}
      />
    </FullScreenPanel>
  );
}