// 云账号详情侧栏 — 概览 / 区域 / 账单 // Logan.Li
import { useState, useEffect, useCallback } from 'react';
import { useTranslation } from 'react-i18next';
import { Button } from '@/components/ui/button';
import { Badge } from '@/components/ui/badge';
import {
  Sheet,
  SheetContent,
  SheetDescription,
  SheetHeader,
  SheetTitle,
} from '@/components/ui/sheet';
import { Tabs, TabsContent, TabsList, TabsTrigger } from '@/components/ui/tabs';
import {
  CheckCircle2,
  CloudDownload,
  Loader2,
  MapPin,
  RefreshCw,
  Wallet,
  XCircle,
} from 'lucide-react';
import { toast } from 'sonner';
import { cloudApi, billingApi } from '@/api';
import { CloudBrandIcon, getProviderColor } from '@/components/icons/CloudBrandIcon';

import type { JsonData } from '@/types/common';

interface CloudAccountDetailSheetProps {
  account: JsonData | null;
  open: boolean;
  onOpenChange: (open: boolean) => void;
  providerLabels: Record<string, string>;
  onSyncRegions?: () => void;
  onSyncBilling?: () => void;
  onImportHosts?: () => void;
}

export function CloudAccountDetailSheet({
  account,
  open,
  onOpenChange,
  providerLabels,
  onSyncRegions,
  onSyncBilling,
  onImportHosts,
}: CloudAccountDetailSheetProps) {
  const { t } = useTranslation();
  const [tab, setTab] = useState('overview');
  const [regions, setRegions] = useState<JsonData[]>([]);
  const [regionsLoading, setRegionsLoading] = useState(false);
  const [syncingRegions, setSyncingRegions] = useState(false);
  const [billings, setBillings] = useState<JsonData[]>([]);
  const [billingsLoading, setBillingsLoading] = useState(false);
  const [syncingBilling, setSyncingBilling] = useState(false);

  const accountId = account?.id as number | string | undefined;

  const loadRegions = useCallback(async () => {
    if (!accountId) return;
    setRegionsLoading(true);
    try {
      const res = await cloudApi.getAccountRegions(accountId);
      setRegions(res?.list || []);
    } catch {
      setRegions([]);
    } finally {
      setRegionsLoading(false);
    }
  }, [accountId]);

  const loadBillings = useCallback(async () => {
    if (!accountId) return;
    setBillingsLoading(true);
    try {
      const monthStart = new Date().toISOString().slice(0, 7) + '-01';
      const res = await billingApi.list({
        cloud_account_id: Number(accountId),
        start_date: monthStart,
        page_size: 20,
      });
      setBillings(res?.list || []);
    } catch {
      setBillings([]);
    } finally {
      setBillingsLoading(false);
    }
  }, [accountId]);

  useEffect(() => {
    if (!open || !accountId) return;
    setTab('overview');
    loadRegions();
    loadBillings();
  }, [open, accountId, loadRegions, loadBillings]);

  const handleSyncRegions = async () => {
    if (!accountId) return;
    setSyncingRegions(true);
    try {
      await cloudApi.syncRegions(accountId);
      await loadRegions();
      onSyncRegions?.();
      toast.success(t('cloud.syncRegionsSuccess'));
    } catch (e) {
      toast.error(t('cloud.syncRegionsFailed'), { description: (e as JsonData).message });
    } finally {
      setSyncingRegions(false);
    }
  };

  const handleSyncBilling = async () => {
    if (!accountId) return;
    setSyncingBilling(true);
    try {
      const res = await cloudApi.syncBilling(accountId);
      await loadBillings();
      onSyncBilling?.();
      const errs = res?.errors || [];
      if (errs.length > 0) {
        toast.warning(t('cloud.syncBillingPartial'), { description: errs.join('\n') });
      } else {
        toast.success(t('cloud.syncBillingSuccess'), {
          description: t('cloud.syncBillingResult', {
            date: res.billing_date,
            created: res.created,
            updated: res.updated,
          }),
        });
      }
    } catch (e) {
      toast.error(t('cloud.syncBillingFailed'), { description: (e as JsonData).message });
    } finally {
      setSyncingBilling(false);
    }
  };

  if (!account) return null;

  const provider = String(account.provider || '');
  const serverCount = account.server_count ?? account.serverCount ?? 0;
  const regionCount = account.region_count ?? account.regionCount ?? regions.length;
  const monthlyCost = account.monthly_cost ?? account.monthlyCost ?? 0;
  const lastSync = account.last_sync_at || account.lastSyncAt || account.last_sync;

  return (
    <Sheet open={open} onOpenChange={onOpenChange}>
      <SheetContent side="right" className="w-full sm:max-w-xl overflow-y-auto">
        <SheetHeader className="border-b border-[var(--dg-border)] pb-4">
          <div className="flex items-start gap-3 pr-8">
            <div
              className="w-10 h-10 rounded-lg bg-[var(--dg-bg-tertiary)] flex items-center justify-center shrink-0"
              style={{ borderBottom: `2px solid ${getProviderColor(provider)}` }}
            >
              <CloudBrandIcon provider={provider} className="h-6 w-6" />
            </div>
            <div className="min-w-0">
              <SheetTitle className="truncate">{account.name}</SheetTitle>
              <SheetDescription>
                {providerLabels[provider] || provider}
                {account.status === 'active' ? (
                  <Badge className="dg-status-running border-0 ml-2">
                    <CheckCircle2 className="h-3 w-3 mr-1" />
                    {t('cloud.normal')}
                  </Badge>
                ) : account.status === 'inactive' ? (
                  <Badge className="dg-status-stopped border-0 ml-2">
                    <XCircle className="h-3 w-3 mr-1" />
                    {t('cloud.stopped')}
                  </Badge>
                ) : null}
              </SheetDescription>
            </div>
          </div>
        </SheetHeader>

        <Tabs value={tab} onValueChange={setTab} className="px-1 pt-2">
          <TabsList className="w-full grid grid-cols-3">
            <TabsTrigger value="overview">{t('cloud.tabOverview')}</TabsTrigger>
            <TabsTrigger value="regions">{t('cloud.tabRegions')}</TabsTrigger>
            <TabsTrigger value="billing">{t('cloud.tabBilling')}</TabsTrigger>
          </TabsList>

          <TabsContent value="overview" className="space-y-4 mt-4">
            <div className="grid grid-cols-3 gap-3">
              <div className="rounded-lg p-3 bg-[var(--dg-bg-tertiary)]">
                <p className="text-xs dg-text-secondary">{t('cloud.monthlyFee')}</p>
                <p className="text-lg font-medium text-[var(--dg-green)]">¥{Number(monthlyCost).toLocaleString()}</p>
              </div>
              <div className="rounded-lg p-3 bg-[var(--dg-bg-tertiary)]">
                <p className="text-xs dg-text-secondary">{t('cloud.serverCount')}</p>
                <p className="text-lg font-medium">{serverCount}</p>
              </div>
              <div className="rounded-lg p-3 bg-[var(--dg-bg-tertiary)]">
                <p className="text-xs dg-text-secondary">{t('cloud.regionCount')}</p>
                <p className="text-lg font-medium">{regionCount}</p>
              </div>
            </div>
            {lastSync && (
              <p className="text-xs dg-text-muted">
                {t('cloud.syncTime')}: {new Date(lastSync).toLocaleString()}
              </p>
            )}
            <div className="flex flex-wrap gap-2">
              <Button size="sm" variant="outline" className="dg-btn-secondary" disabled={syncingRegions} onClick={handleSyncRegions}>
                {syncingRegions ? <Loader2 className="h-4 w-4 mr-1 animate-spin" /> : <MapPin className="h-4 w-4 mr-1" />}
                {t('cloud.syncRegions')}
              </Button>
              <Button size="sm" variant="outline" className="dg-btn-secondary" disabled={syncingBilling} onClick={handleSyncBilling}>
                {syncingBilling ? <Loader2 className="h-4 w-4 mr-1 animate-spin" /> : <Wallet className="h-4 w-4 mr-1" />}
                {t('cloud.syncBilling')}
              </Button>
              {onImportHosts && (
                <Button size="sm" className="dg-btn-primary" onClick={onImportHosts}>
                  <CloudDownload className="h-4 w-4 mr-1" />
                  {t('cloud.importHosts')}
                </Button>
              )}
            </div>
          </TabsContent>

          <TabsContent value="regions" className="mt-4 space-y-3">
            <div className="flex items-center justify-between">
              <span className="text-sm dg-text-secondary">{t('cloud.regionListHint')}</span>
              <Button size="sm" variant="outline" className="dg-btn-secondary h-8" disabled={syncingRegions} onClick={handleSyncRegions}>
                {syncingRegions ? <Loader2 className="h-3 w-3 animate-spin" /> : <RefreshCw className="h-3 w-3" />}
              </Button>
            </div>
            {regionsLoading ? (
              <div className="flex justify-center py-8"><Loader2 className="h-6 w-6 animate-spin dg-text-muted" /></div>
            ) : regions.length === 0 ? (
              <p className="text-sm dg-text-muted text-center py-8">{t('cloud.noRegions')}</p>
            ) : (
              <div className="space-y-2 max-h-[50vh] overflow-y-auto">
                {regions.map((r) => (
                  <div key={r.id || r.code} className="flex items-center justify-between px-3 py-2 rounded-md bg-[var(--dg-bg-tertiary)] text-sm">
                    <span className="font-medium">{r.name || r.code}</span>
                    <span className="dg-text-muted text-xs">{r.code}</span>
                  </div>
                ))}
              </div>
            )}
          </TabsContent>

          <TabsContent value="billing" className="mt-4 space-y-3">
            <div className="flex items-center justify-between">
              <span className="text-sm dg-text-secondary">{t('cloud.billingMonthHint')}</span>
              <Button size="sm" variant="outline" className="dg-btn-secondary h-8" disabled={syncingBilling} onClick={handleSyncBilling}>
                {syncingBilling ? <Loader2 className="h-3 w-3 animate-spin" /> : <RefreshCw className="h-3 w-3" />}
              </Button>
            </div>
            {billingsLoading ? (
              <div className="flex justify-center py-8"><Loader2 className="h-6 w-6 animate-spin dg-text-muted" /></div>
            ) : billings.length === 0 ? (
              <p className="text-sm dg-text-muted text-center py-8">{t('cloud.noBillingRecords')}</p>
            ) : (
              <div className="space-y-2 max-h-[50vh] overflow-y-auto">
                {billings.map((b) => (
                  <div key={b.id} className="flex items-center justify-between px-3 py-2 rounded-md bg-[var(--dg-bg-tertiary)] text-sm">
                    <div>
                      <p className="font-medium">{b.service || '-'}</p>
                      <p className="text-xs dg-text-muted">{b.billing_date} · {b.region || '-'}</p>
                    </div>
                    <span className="text-[var(--dg-green)] font-medium">
                      ¥{Number(b.cost || 0).toLocaleString('zh-CN', { minimumFractionDigits: 2, maximumFractionDigits: 2 })}
                    </span>
                  </div>
                ))}
              </div>
            )}
          </TabsContent>
        </Tabs>
      </SheetContent>
    </Sheet>
  );
}