import { ContentCopy } from "@mui/icons-material";
import {
  Alert,
  Box,
  CircularProgress,
  IconButton,
  List,
  ListItem,
  ListItemText,
  Snackbar,
  TextField,
  Tooltip,
} from "@mui/material";
import { useLockFn } from "ahooks";
import { useImperativeHandle, useState, type Ref } from "react";
import { useTranslation } from "react-i18next";

import { BaseDialog, DialogRef, Switch } from "@/components/base";
import { useClashInfo } from "@/hooks/use-clash";
import { useVerge } from "@/hooks/use-verge";
import { showNotice } from "@/services/noticeService";

export function ControllerViewer({ ref }: { ref?: Ref<DialogRef> }) {
  const { t } = useTranslation();
  const [open, setOpen] = useState(false);
  const [copySuccess, setCopySuccess] = useState<null | string>(null);
  const [isSaving, setIsSaving] = useState(false);

  const { clashInfo, patchInfo } = useClashInfo();
  const { verge, patchVerge } = useVerge();
  const [controller, setController] = useState(clashInfo?.server || "");
  const [secret, setSecret] = useState(clashInfo?.secret || "");
  const [enableController, setEnableController] = useState(
    verge?.enable_external_controller ?? false,
  );

  // 对话框打开时初始化配置
  useImperativeHandle(ref, () => ({
    open: async () => {
      setOpen(true);
      setController(clashInfo?.server || "");
      setSecret(clashInfo?.secret || "");
      setEnableController(verge?.enable_external_controller ?? false);
    },
    close: () => setOpen(false),
  }));

  // 保存配置
  const onSave = useLockFn(async () => {
    try {
      setIsSaving(true);

      // 先保存 enable_external_controller 设置
      await patchVerge({ enable_external_controller: enableController });

      // 如果启用了外部控制器，则保存控制器地址和密钥
      if (enableController) {
        if (!controller.trim()) {
          showNotice.error(
            "settings.sections.externalController.messages.addressRequired",
          );
          return;
        }

        if (!secret.trim()) {
          showNotice.error(
            "settings.sections.externalController.messages.secretRequired",
          );
          return;
        }

        await patchInfo({ "external-controller": controller, secret });
      } else {
        // 如果禁用了外部控制器，则清空控制器地址
        await patchInfo({ "external-controller": "" });
      }

      showNotice.success("shared.feedback.notifications.common.saveSuccess");
      setOpen(false);
    } catch (err) {
      showNotice.error(
        "shared.feedback.notifications.common.saveFailed",
        err,
        4000,
      );
    } finally {
      setIsSaving(false);
    }
  });

  // 复制到剪贴板
  const handleCopyToClipboard = useLockFn(
    async (text: string, type: string) => {
      try {
        await navigator.clipboard.writeText(text);
        setCopySuccess(type);
        setTimeout(() => setCopySuccess(null));
      } catch (err) {
        console.warn("[ControllerViewer] copy to clipboard failed:", err);
        showNotice.error(
          "settings.sections.externalController.messages.copyFailed",
        );
      }
    },
  );

  return (
    <BaseDialog
      open={open}
      title={t("settings.sections.externalController.title")}
      contentSx={{ width: 400 }}
      okBtn={
        isSaving ? (
          <Box display="flex" alignItems="center" gap={1}>
            <CircularProgress size={16} color="inherit" />
            {t("shared.statuses.saving")}
          </Box>
        ) : (
          t("shared.actions.save")
        )
      }
      cancelBtn={t("shared.actions.cancel")}
      onClose={() => setOpen(false)}
      onCancel={() => setOpen(false)}
      onOk={onSave}
    >
      <List>
        <ListItem
          sx={{
            padding: "5px 2px",
            display: "flex",
            justifyContent: "space-between",
          }}
        >
          <ListItemText
            primary={t("settings.sections.externalController.fields.enable")}
          />
          <Switch
            edge="end"
            checked={enableController}
            onChange={(e) => setEnableController(e.target.checked)}
            disabled={isSaving}
          />
        </ListItem>

        <ListItem
          sx={{
            padding: "5px 2px",
            display: "flex",
            justifyContent: "space-between",
          }}
        >
          <ListItemText
            primary={t("settings.sections.externalController.fields.address")}
          />
          <Box display="flex" alignItems="center" gap={1}>
            <TextField
              size="small"
              sx={{
                width: 175,
                opacity: enableController ? 1 : 0.5,
                pointerEvents: enableController ? "auto" : "none",
              }}
              value={controller}
              placeholder={t(
                "settings.sections.externalController.placeholders.address",
              )}
              onChange={(e) => setController(e.target.value)}
              disabled={isSaving || !enableController}
            />
            <Tooltip
              title={t("settings.sections.externalController.tooltips.copy")}
            >
              <IconButton
                size="small"
                onClick={() => handleCopyToClipboard(controller, "controller")}
                color="primary"
                disabled={isSaving || !enableController}
              >
                <ContentCopy fontSize="small" />
              </IconButton>
            </Tooltip>
          </Box>
        </ListItem>

        <ListItem
          sx={{
            padding: "5px 2px",
            display: "flex",
            justifyContent: "space-between",
          }}
        >
          <ListItemText
            primary={t("settings.sections.externalController.fields.secret")}
          />
          <Box display="flex" alignItems="center" gap={1}>
            <TextField
              size="small"
              sx={{
                width: 175,
                opacity: enableController ? 1 : 0.5,
                pointerEvents: enableController ? "auto" : "none",
              }}
              value={secret}
              placeholder={t(
                "settings.sections.externalController.placeholders.secret",
              )}
              onChange={(e) => setSecret(e.target.value)}
              disabled={isSaving || !enableController}
            />
            <Tooltip
              title={t("settings.sections.externalController.tooltips.copy")}
            >
              <IconButton
                size="small"
                onClick={() => handleCopyToClipboard(secret, "secret")}
                color="primary"
                disabled={isSaving || !enableController}
              >
                <ContentCopy fontSize="small" />
              </IconButton>
            </Tooltip>
          </Box>
        </ListItem>
      </List>

      <Snackbar
        open={copySuccess !== null}
        autoHideDuration={2000}
        anchorOrigin={{ vertical: "bottom", horizontal: "right" }}
      >
        <Alert severity="success">
          {copySuccess === "controller"
            ? t(
                "settings.sections.externalController.messages.controllerCopied",
              )
            : t("settings.sections.externalController.messages.secretCopied")}
        </Alert>
      </Snackbar>
    </BaseDialog>
  );
}
