import {
  AdminAlert,
  AdminButton,
  AdminDialog,
  AdminField,
  AdminInfoList,
  AdminListPanel,
  AdminPanelHeading,
  AdminStatusPill,
  AdminTag,
  AdminTagList,
  formatAdminCurrencyCents,
} from '@genarrative/shared/components';
import { RefreshCcw, ShieldAlert, UserRound, X } from 'lucide-react';
import { useEffect, useRef, useState } from 'react';
import { createPortal } from 'react-dom';

import {
  formatAdminApiError,
  getAdminUserDetail,
  isAdminApiError,
  reconcileAdminUserConsumption,
  updateAdminWalletRestriction,
} from '../api/adminApiClient';
import type {
  AdminProfileMembershipPayload,
  AdminProfileWalletPayload,
  AdminUserDetailResponse,
} from '../api/adminApiTypes';
import {
  formatMembershipCycleKind,
  formatMembershipPlan,
  formatMembershipStatus,
} from '../config/membershipDisplay';
import { useAdminWriteConfirm } from './useAdminWriteConfirm';

interface AdminUserDetailDialogProps {
  token: string;
  userId?: string | null;
  publicUserCode?: string | null;
  onClose: () => void;
  onUnauthorized: (message?: string) => void;
}

export function AdminUserDetailDialog({
  token,
  userId,
  publicUserCode,
  onClose,
  onUnauthorized,
}: AdminUserDetailDialogProps) {
  const [detail, setDetail] = useState<AdminUserDetailResponse | null>(null);
  const [isLoading, setIsLoading] = useState(true);
  const [errorMessage, setErrorMessage] = useState('');
  const [restrictionReason, setRestrictionReason] = useState('');
  const [isSavingRestriction, setIsSavingRestriction] = useState(false);
  const [isReconcilingConsumption, setIsReconcilingConsumption] =
    useState(false);
  const [reconcileMessage, setReconcileMessage] = useState('');
  const closeButtonRef = useRef<HTMLButtonElement | null>(null);
  const requestVersionRef = useRef(0);
  const { confirmWrite, confirmDialog, isConfirming } = useAdminWriteConfirm();

  useEffect(() => {
    void loadDetail();
    return () => {
      requestVersionRef.current += 1;
    };
    // eslint-disable-next-line react-hooks/exhaustive-deps
  }, [token, userId, publicUserCode]);

  useEffect(() => {
    closeButtonRef.current?.focus();
  }, []);

  useEffect(() => {
    const previousOverflow = document.body.style.overflow;
    document.body.style.overflow = 'hidden';
    return () => {
      document.body.style.overflow = previousOverflow;
    };
  }, []);

  async function loadDetail() {
    const requestVersion = requestVersionRef.current + 1;
    requestVersionRef.current = requestVersion;
    setIsLoading(true);
    setErrorMessage('');
    setReconcileMessage('');
    try {
      const response = await getAdminUserDetail(token, {
        userId: userId?.trim() || undefined,
        publicUserCode: userId?.trim()
          ? undefined
          : publicUserCode?.trim() || undefined,
      });
      if (requestVersionRef.current === requestVersion) {
        setDetail(response);
      }
    } catch (error: unknown) {
      if (requestVersionRef.current !== requestVersion) {
        return;
      }
      if (isAdminApiError(error) && error.status === 401) {
        onUnauthorized('登录状态已失效');
        return;
      }
      setErrorMessage(formatAdminApiError(error));
    } finally {
      if (requestVersionRef.current === requestVersion) {
        setIsLoading(false);
      }
    }
  }

  async function handleRestrictionChange() {
    if (!detail || isSavingRestriction) {
      return;
    }
    const reason = restrictionReason.trim();
    if (!reason) {
      setErrorMessage('请填写人工冻结操作原因');
      return;
    }
    const nextFrozen = !detail.wallet.manualFrozen;
    const action = nextFrozen ? '人工冻结钱包' : '解除人工冻结';
    const confirmed = await confirmWrite({
      action,
      target: `${detail.displayName || detail.publicUserCode} / ${detail.userId}`,
    });
    if (!confirmed) {
      return;
    }

    setIsSavingRestriction(true);
    setErrorMessage('');
    try {
      const response = await updateAdminWalletRestriction(token, {
        userId: detail.userId,
        frozen: nextFrozen,
        reason,
      });
      setDetail((current) =>
        current ? { ...current, wallet: response.wallet } : current,
      );
      setRestrictionReason('');
    } catch (error: unknown) {
      if (isAdminApiError(error) && error.status === 401) {
        onUnauthorized('登录状态已失效');
      } else {
        setErrorMessage(formatAdminApiError(error));
      }
    } finally {
      setIsSavingRestriction(false);
    }
  }

  async function handleConsumptionReconcile() {
    if (!detail || isReconcilingConsumption) {
      return;
    }
    const confirmed = await confirmWrite({
      action: '手动对账历史花费',
      target: `${detail.displayName || detail.publicUserCode} / ${detail.userId}`,
    });
    if (!confirmed) {
      return;
    }

    setIsReconcilingConsumption(true);
    setErrorMessage('');
    setReconcileMessage('');
    try {
      const response = await reconcileAdminUserConsumption(token, {
        userId: detail.userId,
      });
      setDetail((current) =>
        current
          ? {
              ...current,
              historicalConsumedPoints: response.historicalConsumedPoints,
            }
          : current,
      );
      setReconcileMessage(
        response.changed ? '对账完成，历史花费已校准' : '对账完成，数据一致',
      );
    } catch (error: unknown) {
      if (isAdminApiError(error) && error.status === 401) {
        onUnauthorized('登录状态已失效');
      } else {
        setErrorMessage(formatAdminApiError(error));
      }
    } finally {
      setIsReconcilingConsumption(false);
    }
  }

  if (typeof document === 'undefined') {
    return null;
  }

  return createPortal(
    <AdminDialog
      backdropClassName="admin-user-detail-backdrop"
      closeOnBackdrop={
        !isSavingRestriction && !isReconcilingConsumption && !isConfirming
      }
      closeOnEscape={
        !isSavingRestriction && !isReconcilingConsumption && !isConfirming
      }
      description={detail?.publicUserCode || publicUserCode || userId || '-'}
      panelClassName="admin-user-detail-panel"
      showClose={false}
      title="用户详情"
      titleProps={{ id: 'admin-user-detail-title' }}
      onClose={onClose}
      extra={
        <div className="admin-detail-actions">
          <AdminButton
            variant="ghost"
            aria-label="刷新用户信息"
            disabled={isLoading || isReconcilingConsumption}
            title="刷新"
            type="button"
            onClick={() => void loadDetail()}
          >
            <RefreshCcw size={17} aria-hidden="true" />
          </AdminButton>
          <AdminButton
            variant="ghost"
            ref={closeButtonRef}
            aria-label="关闭用户详情"
            disabled={isSavingRestriction || isReconcilingConsumption}
            title="关闭"
            type="button"
            onClick={onClose}
          >
            <X size={17} aria-hidden="true" />
          </AdminButton>
        </div>
      }
    >
      {isLoading ? (
        <div className="admin-user-detail-loading" role="status">
          <div className="admin-loading-mark" />
          <span>正在读取用户信息</span>
        </div>
      ) : errorMessage && !detail ? (
        <div className="admin-user-detail-error">
          <AdminAlert>{errorMessage}</AdminAlert>
          <AdminButton
            variant="secondary"
            type="button"
            onClick={() => void loadDetail()}
          >
            <RefreshCcw size={17} aria-hidden="true" />
            <span>重试</span>
          </AdminButton>
        </div>
      ) : detail ? (
        <>
          <UserIdentityHeader detail={detail} />
          {errorMessage ? <AdminAlert>{errorMessage}</AdminAlert> : null}
          <WalletSection
            wallet={detail.wallet}
            historicalConsumedPoints={detail.historicalConsumedPoints}
            canReconcileConsumption={detail.canReconcileConsumption}
            isBusy={isReconcilingConsumption || isSavingRestriction}
            isReconciling={isReconcilingConsumption}
            reconcileMessage={reconcileMessage}
            onReconcile={() => void handleConsumptionReconcile()}
          />

          <MembershipSection membership={detail.membership} />

          <section className="admin-user-restriction-section">
            <AdminPanelHeading
              title="人工冻结"
              count={detail.wallet.manualFrozen ? '当前已冻结' : '当前未冻结'}
            />
            {detail.wallet.manualRestriction ? (
              <div className="admin-user-restriction-record">
                <span>
                  {detail.wallet.manualRestriction.reason || '未填写原因'}
                </span>
                <small>
                  {formatMicros(
                    detail.wallet.manualRestriction.updatedAtMicros,
                  )}{' '}
                  / {detail.wallet.manualRestriction.updatedByAdminDisplayName}
                </small>
              </div>
            ) : null}
            {detail.wallet.manualFrozen && detail.wallet.refundDebtFrozen ? (
              <AdminAlert tone="warning">
                <ShieldAlert size={17} aria-hidden="true" />
                <span>解除人工冻结后，退款欠账限制仍会保留。</span>
              </AdminAlert>
            ) : null}
            <div className="admin-user-restriction-actions">
              <AdminField label="操作原因" fill>
                <input
                  aria-label="人工冻结操作原因"
                  disabled={isSavingRestriction || isReconcilingConsumption}
                  value={restrictionReason}
                  onChange={(event) => setRestrictionReason(event.target.value)}
                />
              </AdminField>
              <button
                className={
                  detail.wallet.manualFrozen
                    ? 'admin-secondary-button'
                    : 'admin-danger-button'
                }
                disabled={
                  isSavingRestriction ||
                  isReconcilingConsumption ||
                  !restrictionReason.trim()
                }
                type="button"
                onClick={() => void handleRestrictionChange()}
              >
                <ShieldAlert size={17} aria-hidden="true" />
                <span>
                  {isSavingRestriction
                    ? '处理中'
                    : detail.wallet.manualFrozen
                      ? '解除人工冻结'
                      : '人工冻结钱包'}
                </span>
              </button>
            </div>
          </section>

          <section className="admin-user-recharge-section">
            <AdminPanelHeading
              title="充值订单"
              count={<>{detail.rechargeOrders.length} 笔</>}
            />
            <AdminListPanel
              columns={[
                {
                  key: 'orderId',
                  label: '订单',
                  sortable: true,
                  sortDescription: '订单创建时间',
                  sortValue: (order) => order.createdAtMicros,
                },
                {
                  key: 'product',
                  label: '商品',
                  sortable: true,
                  sortValue: (order) => order.productTitle || order.productId,
                },
                {
                  key: 'paidAmount',
                  label: '实付',
                  sortable: true,
                  sortValue: (order) => order.paidAmountCents,
                },
                {
                  key: 'pointsDelta',
                  label: '发放泥点',
                  sortable: true,
                  sortValue: (order) => order.pointsDelta,
                },
                {
                  key: 'refund',
                  label: '退款',
                  sortable: true,
                  sortValue: (order) => order.cumulativeSuccessRefundCents,
                },
                { key: 'status', label: '状态', sortable: true },
              ]}
              emptyText="暂无充值订单"
              renderRow={(order) => (
                <tr key={order.orderId}>
                  <td>
                    <span className="admin-mono-value">{order.orderId}</span>
                    <small>{formatMicros(order.createdAtMicros)}</small>
                  </td>
                  <td>{order.productTitle || order.productId}</td>
                  <td>
                    {order.paidAmountCents > 0
                      ? formatAdminCurrencyCents(order.paidAmountCents)
                      : '未支付'}
                  </td>
                  <td>{order.pointsDelta} 泥点</td>
                  <td>
                    {formatAdminCurrencyCents(
                      order.cumulativeSuccessRefundCents,
                    )}
                    <small>欠账 {order.unrecoveredPoints} 泥点</small>
                  </td>
                  <td>{formatOrderStatus(order.status)}</td>
                </tr>
              )}
              rows={detail.rechargeOrders}
              surface="plain"
              tableClassName="admin-user-recharge-table"
            />
          </section>
        </>
      ) : null}
      {confirmDialog}
    </AdminDialog>,
    document.body,
  );
}

function UserIdentityHeader({ detail }: { detail: AdminUserDetailResponse }) {
  return (
    <section className="admin-user-identity">
      <div className="admin-user-avatar">
        {detail.avatarUrl ? (
          <img
            alt={`${detail.displayName || detail.publicUserCode}头像`}
            src={detail.avatarUrl}
          />
        ) : (
          <UserRound size={30} aria-hidden="true" />
        )}
      </div>
      <div className="admin-user-identity-primary">
        <strong>{detail.displayName || '未设置昵称'}</strong>
        <span>{detail.publicUserCode || '未分配陶泥号'}</span>
      </div>
      <AdminInfoList
        items={[
          {
            label: <>内部 ID</>,
            value: <>{detail.userId}</>,
          },
          {
            label: <>脱敏手机号</>,
            value: <>{detail.phoneNumberMasked || '未绑定'}</>,
          },
          {
            label: <>登录方式</>,
            value: <>{detail.loginMethod || '-'}</>,
          },
          {
            label: <>累计充值</>,
            value: (
              <>
                {typeof detail.cumulativeRechargedCents === 'number'
                  ? formatAdminCurrencyCents(detail.cumulativeRechargedCents)
                  : '未知'}
              </>
            ),
          },
          {
            label: <>绑定状态</>,
            value: (
              <>
                {detail.bindingStatus || '-'} / 手机
                {detail.phoneBound ? '已绑定' : '未绑定'} / 微信
                {detail.wechatBound ? '已绑定' : '未绑定'}
              </>
            ),
          },
        ]}
        className="admin-user-identity-list"
      />
    </section>
  );
}

function WalletSection({
  wallet,
  historicalConsumedPoints,
  canReconcileConsumption,
  isBusy,
  isReconciling,
  reconcileMessage,
  onReconcile,
}: {
  wallet: AdminProfileWalletPayload;
  historicalConsumedPoints: number;
  canReconcileConsumption: boolean;
  isBusy: boolean;
  isReconciling: boolean;
  reconcileMessage: string;
  onReconcile: () => void;
}) {
  const metrics = [
    ['总余额', wallet.totalBalance],
    ['可消费', wallet.spendableBalance],
    ['永久泥点', wallet.permanentPoints],
    ['每日免费', wallet.dailyFreePoints],
    ['月度泥点', wallet.monthlyPoints],
    ['退款占用', wallet.heldPoints],
    ['退款欠账', wallet.refundDebtPoints],
    ['历史花费', historicalConsumedPoints],
  ] as const;
  return (
    <section className="admin-user-wallet-section">
      <AdminPanelHeading
        title="钱包"
        extra={
          <div className="admin-detail-actions">
            {canReconcileConsumption ? (
              <AdminButton
                variant="ghost"
                aria-label="手动对账历史花费"
                disabled={isBusy}
                type="button"
                onClick={onReconcile}
                className="admin-user-wallet-reconcile-button"
              >
                <RefreshCcw size={15} aria-hidden="true" />
                <span>{isReconciling ? '对账中' : '手动对账'}</span>
              </AdminButton>
            ) : null}
            <AdminTagList as="div">
              {wallet.manualFrozen ? <AdminTag>人工冻结</AdminTag> : null}
              {wallet.refundDebtFrozen ? (
                <AdminTag>退款欠账限制</AdminTag>
              ) : null}
              {!wallet.walletFrozen ? (
                <AdminStatusPill tone="ok">正常</AdminStatusPill>
              ) : null}
            </AdminTagList>
          </div>
        }
      />
      {reconcileMessage ? <AdminAlert>{reconcileMessage}</AdminAlert> : null}
      <div className="admin-user-wallet-grid">
        {metrics.map(([label, value]) => (
          <div className="admin-recharge-metric" key={label}>
            <span>{label}</span>
            <strong>{value}</strong>
          </div>
        ))}
      </div>
    </section>
  );
}

function MembershipSection({
  membership,
}: {
  membership: AdminProfileMembershipPayload;
}) {
  const metrics: Array<[string, string]> = [
    ['档位', `${formatMembershipPlan(membership.plan)}（${membership.plan}）`],
    ['状态', formatMembershipStatus(membership.status) || '-'],
    [
      '账期',
      // 非会员时后端投影返回占位账期（monthly / 1/1），不展示成“正在计费”。
      membership.status === 'active'
        ? `${formatMembershipCycleKind(membership.cycleKind)} 第 ${membership.cycleIndex}/${membership.cycleCount} 期`
        : '-',
    ],
    ['本账期发放', `${membership.cycleGrantedPoints} 泥点`],
    ['本账期剩余', `${membership.cycleRemainingPoints} 泥点`],
    [
      '到期',
      membership.expiresAtMicros
        ? formatMicros(membership.expiresAtMicros)
        : '-',
    ],
    [
      '账期重置',
      membership.cycleResetsAtMicros
        ? formatMicros(membership.cycleResetsAtMicros)
        : '-',
    ],
  ];
  return (
    <section className="admin-user-wallet-section">
      <AdminPanelHeading title="会员" />
      <div className="admin-user-wallet-grid">
        {metrics.map(([label, value]) => (
          <div className="admin-recharge-metric" key={label}>
            <span>{label}</span>
            <strong>{value}</strong>
          </div>
        ))}
      </div>
    </section>
  );
}

function formatMicros(value: number) {
  if (!Number.isFinite(value) || value <= 0) {
    return '-';
  }
  return new Date(Math.floor(value / 1000)).toLocaleString('zh-CN', {
    hour12: false,
  });
}

function formatOrderStatus(status: string) {
  const labels: Record<string, string> = {
    pending: '待支付',
    paid: '已支付',
    refunded: '已退款',
    closed: '已关闭',
  };
  return labels[status.toLowerCase()] ?? status;
}