// Zabbix 数据源管理 — 参照 Grafana Zabbix 数据源配置界面 // Logan.Li
import { useState, useEffect, useCallback } from 'react';
import {
  
  Database,
  Plus,
  Trash2,
  Star,
  RefreshCw,
  Plug,
  Shield,
  Globe,
  Settings,
  ChevronDown,
  ChevronUp,
  Edit,
  Clock,
  CheckCircle2,
  XCircle,
} from 'lucide-react';

import { Button } from '@/components/ui/button';
import { Input } from '@/components/ui/input';
import { Badge } from '@/components/ui/badge';
import { Card, CardContent} from '@/components/ui/card';
import { Label } from '@/components/ui/label';
import { Switch } from '@/components/ui/switch';
import {
  Dialog, DialogContent, DialogHeader, DialogTitle, DialogDescription, DialogFooter
} from '@/components/ui/dialog';
import { toast } from 'sonner';
import { useConfirm } from '@/components/ui/confirm-dialog';
import { zabbixDatasourceApi } from '@/api';
import type { JsonData } from '@/types/common';
import i18n from '@/i18n';

interface ZabbixDS {
  id: number;
  name: string;
  url: string;
  username: string;
  password: string;
  trends_after: number;
  trends_range: number;
  trends_cache_ttl: number;
  trends_timeout: number;
  direct_db: boolean;
  disable_acknowledges: boolean;
  disable_data_alignment: boolean;
  is_default: boolean;
  status: number;
  created_at: string;
}

const defaultForm = {
  name: '', url: '', username: '', password: '',
  trends_after: 0, trends_range: 0, trends_cache_ttl: 3600, trends_timeout: 30,
  direct_db: false, disable_acknowledges: false, disable_data_alignment: false,
  is_default: false,
};

export default function ZabbixDatasourceManager() {
  const _confirm = useConfirm();
  const [sources, setSources] = useState<ZabbixDS[]>([]);
  const [loading, setLoading] = useState(true);
  const [dialogOpen, setDialogOpen] = useState(false);
  const [editingId, setEditingId] = useState<number | null>(null);
  const [form, setForm] = useState({ ...defaultForm });

  const [showAuth, setShowAuth] = useState(false);
  const [showTrends, setShowTrends] = useState(false);
  const [showOther, setShowOther] = useState(false);

  const [testing, setTesting] = useState(false);
  const [testResult, setTestResult] = useState<{ success: boolean; message: string } | null>(null);

  const fetchList = useCallback(async () => {
    try {
      const res: JsonData = await zabbixDatasourceApi.list();
      setSources(res?.data || res || []);
    } catch {
      toast.error(i18n.t('monitor.zabbixdatasourc.s45f81749'));
    } finally {
      setLoading(false);
    }
  }, []);

  useEffect(() => { fetchList(); }, [fetchList]);

  const openCreate = () => {
    setEditingId(null);
    setForm({ ...defaultForm });
    setTestResult(null);
    setShowAuth(false); setShowTrends(false); setShowOther(false);
    setDialogOpen(true);
  };

  const openEdit = (ds: ZabbixDS) => {
    setEditingId(ds.id);
    setForm({
      name: ds.name, url: ds.url,
      username: ds.username || '', password: ds.password || '',
      trends_after: ds.trends_after || 0, trends_range: ds.trends_range || 0,
      trends_cache_ttl: ds.trends_cache_ttl || 3600, trends_timeout: ds.trends_timeout || 30,
      direct_db: ds.direct_db || false,
      disable_acknowledges: ds.disable_acknowledges || false,
      disable_data_alignment: ds.disable_data_alignment || false,
      is_default: ds.is_default || false,
    });
    setTestResult(null);
    setDialogOpen(true);
  };

  const updateForm = (field: string, value: string | number | boolean) => {
    setForm(prev => ({ ...prev, [field]: value }));
  };

  const handleSave = async () => {
    if (!form.name.trim()) { toast.error(i18n.t('monitor.promDs.nameRequired')); return; }
    if (!form.url.trim()) { toast.error(i18n.t('monitor.zabbixdatasourc.s2ba385d6')); return; }
    if (!form.username.trim()) { toast.error(i18n.t('pipeline.usernameRequired')); return; }
    if (!form.password.trim()) { toast.error(i18n.t('login.passwordRequired')); return; }

    try {
      if (editingId) {
        await zabbixDatasourceApi.update(editingId, form);
        toast.success(i18n.t('monitor.zabbixdatasourc.s8dfdd2f4'));
      } else {
        await zabbixDatasourceApi.create(form);
        toast.success(i18n.t('monitor.zabbixdatasourc.sa6def01f'));
      }
      setDialogOpen(false);
      fetchList();
    } catch (err) {
      toast.error(err?.message || i18n.t('cloud.operationFailed'));
    }
  };

  const handleDelete = async (ds: ZabbixDS) => {
    const ok = await _confirm({
      title: i18n.t('monitor.deleteDatasource'),
      description: `确定删除「${ds.name}」？`,
      variant: 'destructive',
    });
    if (!ok) return;
    try {
      await zabbixDatasourceApi.delete(ds.id);
      toast.success(i18n.t('monitor.silenceRules.deleted'));
      fetchList();
    } catch { toast.error(i18n.t('kubernetes.msg.deleteFailed2')); }
  };

  const handleSetDefault = async (ds: ZabbixDS) => {
    try {
      await zabbixDatasourceApi.setDefault(ds.id);
      toast.success(`已将「${ds.name}」设为默认`);
      fetchList();
    } catch { toast.error(i18n.t('monitor.zabbixdatasourc.s9f96034c')); }
  };

  const handleTest = async () => {
    if (!form.url.trim() || !form.username.trim()) {
      toast.error(i18n.t('monitor.zabbixdatasourc.s1d3562b7'));
      return;
    }
    setTesting(true);
    setTestResult(null);
    try {
      const res: JsonData = await zabbixDatasourceApi.testConnection({
        url: form.url.trim(),
        username: form.username.trim(),
        password: form.password || '',
      });
      const data = res?.data || res;
      setTestResult(data);
    } catch (err) {
      setTestResult({ success: false, message: err?.message || i18n.t('monitor.alertChannels.testFailed') });
    } finally {
      setTesting(false);
    }
  };

  if (loading) {
    return (
      <div className="flex items-center justify-center h-96">
        <RefreshCw className="animate-spin w-8 h-8 text-[var(--dg-text-secondary)]" />
      </div>
    );
  }

  return (
    <div className="space-y-4">
      <div className="flex items-center justify-between">
        <div>
          <h2 className="text-lg font-semibold text-[var(--dg-text-primary)] flex items-center gap-2">
            <img
              src="https://cdn.jsdelivr.net/gh/walkxcode/dashboard-icons@master/png/zabbix.png"
              className="w-5 h-5 rounded"
              onError={(e) => { (e.target as HTMLImageElement).style.display = 'none'; }}
            />
            Zabbix 数据源
          </h2>
          <p className="text-xs text-[var(--dg-text-muted)]"> {i18n.t('monitor.zabbixdatasourc.s79e929d8')} </p>
        </div>
        <Button onClick={openCreate} size="sm">
          <Plus className="w-4 h-4 mr-1" />添加
        </Button>
      </div>

      {sources.length === 0 ? (
        <Card className="bg-[var(--dg-bg-secondary)] border-[var(--dg-border)]">
          <CardContent className="py-12 text-center text-[var(--dg-text-muted)]">
            <Database className="w-12 h-12 mx-auto mb-3 opacity-30" />
            <p className="text-sm"> {i18n.t('monitor.zabbixdatasourc.sc9c9bd18')} </p>
            <Button size="sm" className="mt-4" onClick={openCreate}>
              <Plus className="w-4 h-4 mr-1" />添加数据源
            </Button>
          </CardContent>
        </Card>
      ) : (
        <div className="grid gap-3">
          {sources.map(ds => (
            <Card key={ds.id} className="bg-[var(--dg-bg-secondary)] border-[var(--dg-border)] hover:border-orange-500/30 transition-colors">
              <CardContent className="p-4">
                <div className="flex items-start justify-between">
                  <div className="flex-1 min-w-0">
                    <div className="flex items-center gap-2 mb-1">
                      <div className={`w-2 h-2 rounded-full ${ds.status === 1 ? 'bg-emerald-400' : 'bg-[var(--dg-bg-active)]'}`} />
                      <span className="font-medium text-[var(--dg-text-primary)]">{ds.name}</span>
                      {ds.is_default && <Badge className="bg-amber-500/20 dg-text-yellow text-[10px]"><Star className="w-3 h-3 mr-0.5" /> {i18n.t('k8s.storage.default')} </Badge>}
                      {ds.status === 1
                        ? <Badge className="bg-emerald-500/20 dg-text-green text-[10px]"> {i18n.t('system.userActive')} </Badge>
                        : <Badge className="bg-[var(--dg-bg-active)]/20 dg-text-secondary text-[10px]"> {i18n.t('system.userInactive')} </Badge>}
                    </div>
                    <div className="text-xs text-[var(--dg-text-muted)] space-x-3">
                      <code className="text-orange-300">{ds.url}</code>
                      <span>用户: {ds.username}</span>
                      {ds.direct_db && <Badge variant="outline" className="text-[10px]"> {i18n.t('monitor.zabbixdatasourc.s85260abd')} </Badge>}
                    </div>
                  </div>
                  <div className="flex items-center gap-1">
                    {!ds.is_default && (
                      <Button variant="ghost" size="sm" className="h-7 text-xs dg-text-yellow" onClick={() => handleSetDefault(ds)}>
                        <Star className="w-3 h-3 mr-0.5" />默认
                      </Button>
                    )}
                    <Button variant="ghost" size="sm" className="h-7 text-xs" onClick={() => openEdit(ds)}>
                      <Edit className="w-3 h-3 mr-0.5" />编辑
                    </Button>
                    <Button variant="ghost" size="sm" className="h-7 text-xs dg-text-red" onClick={() => handleDelete(ds)}>
                      <Trash2 className="w-3 h-3" />
                    </Button>
                  </div>
                </div>
              </CardContent>
            </Card>
          ))}
        </div>
      )}

      {/* 编辑 Dialog — 参照 Grafana Zabbix 数据源配置 */}
      <Dialog open={dialogOpen} onOpenChange={setDialogOpen}>
        <DialogContent className="max-w-xl max-h-[85vh] overflow-y-auto bg-[var(--dg-bg-secondary)] border-[var(--dg-border)]">
          <DialogHeader>
            <DialogTitle className="text-[var(--dg-text-primary)] flex items-center gap-2">
              <Database className="h-5 w-5 dg-text-orange" />
              {editingId ? i18n.t('monitor.zabbixdatasourc.sc1c87ed6') : i18n.t('monitor.zabbixdatasourc.sa77d384f')}
            </DialogTitle>
            <DialogDescription>
              配置 Zabbix API 连接，用于主机监控与告警数据获取
            </DialogDescription>
          </DialogHeader>

          <div className="space-y-4 py-2">
            {/* Name + Default */}
            <div className="grid grid-cols-2 gap-3">
              <div>
                <Label className="text-xs text-[var(--dg-text-secondary)]"> {i18n.t('deploy.form.nameStar')} </Label>
                <Input className="mt-1 h-9 text-sm bg-[var(--dg-bg-primary)]" placeholder={i18n.t('monitor.zabbixdatasourc.s9f1e6a92')}
                  value={form.name} onChange={e => updateForm('name', e.target.value)} />
              </div>
              <div className="flex items-end pb-1">
                <div className="flex items-center gap-2">
                  <Switch checked={form.is_default} onCheckedChange={v => updateForm('is_default', v)} />
                  <Label className="text-xs cursor-pointer"> {i18n.t('aiops.llmSetDefault')} </Label>
                </div>
              </div>
            </div>

            {/* HTTP + Auth */}
            <div className="border border-[var(--dg-border)] rounded-lg p-3 space-y-3">
              <div className="flex items-center gap-2 text-sm text-[var(--dg-text-primary)]">
                <Globe className="w-4 h-4" /> HTTP
              </div>
              <div>
                <Label className="text-xs text-[var(--dg-text-secondary)]">URL *</Label>
                <Input className="mt-1 h-9 text-sm font-mono bg-[var(--dg-bg-primary)]"
                  placeholder="http://zabbix.example.com/api_jsonrpc.php"
                  value={form.url} onChange={e => updateForm('url', e.target.value)} />
              </div>
            </div>

            {/* API Details — 折叠 */}
            <div className="border border-[var(--dg-border)] rounded-lg overflow-hidden">
              <button className="w-full flex items-center justify-between px-3 py-2.5 text-sm hover:bg-[var(--dg-bg-tertiary)]"
                onClick={() => setShowAuth(!showAuth)}>
                <div className="flex items-center gap-2">
                  <Shield className="w-4 h-4" />
                  <span>Zabbix API 认证</span>
                </div>
                {showAuth ? <ChevronUp className="w-4 h-4" /> : <ChevronDown className="w-4 h-4" />}
              </button>
              {showAuth && (
                <div className="px-3 pb-3 space-y-3">
                  <Input className="h-9 text-sm bg-[var(--dg-bg-primary)]" placeholder={i18n.t('system.userNameRequired')}
                    value={form.username} onChange={e => updateForm('username', e.target.value)} />
                  <Input className="h-9 text-sm bg-[var(--dg-bg-primary)]" type="password" placeholder={i18n.t('system.passwordRequired')}
                    value={form.password} onChange={e => updateForm('password', e.target.value)} />
                </div>
              )}
            </div>

            {/* Trends — 折叠 */}
            <div className="border border-[var(--dg-border)] rounded-lg overflow-hidden">
              <button className="w-full flex items-center justify-between px-3 py-2.5 text-sm hover:bg-[var(--dg-bg-tertiary)]"
                onClick={() => setShowTrends(!showTrends)}>
                <div className="flex items-center gap-2">
                  <Clock className="w-4 h-4" />
                  <span>Trends 设置</span>
                </div>
                {showTrends ? <ChevronUp className="w-4 h-4" /> : <ChevronDown className="w-4 h-4" />}
              </button>
              {showTrends && (
                <div className="px-3 pb-3 space-y-3">
                  <div className="grid grid-cols-2 gap-3">
                    <div>
                      <Label className="text-xs text-[var(--dg-text-secondary)]">After (天)</Label>
                      <Input className="mt-1 h-9 text-sm bg-[var(--dg-bg-primary)]" type="number" min={0}
                        value={form.trends_after} onChange={e => updateForm('trends_after', parseInt(e.target.value) || 0)} />
                    </div>
                    <div>
                      <Label className="text-xs text-[var(--dg-text-secondary)]">Range (秒)</Label>
                      <Input className="mt-1 h-9 text-sm bg-[var(--dg-bg-primary)]" type="number" min={0}
                        value={form.trends_range} onChange={e => updateForm('trends_range', parseInt(e.target.value) || 0)} />
                    </div>
                  </div>
                  <div className="grid grid-cols-2 gap-3">
                    <div>
                      <Label className="text-xs text-[var(--dg-text-secondary)]">Cache TTL (秒)</Label>
                      <Input className="mt-1 h-9 text-sm bg-[var(--dg-bg-primary)]" type="number" min={0}
                        value={form.trends_cache_ttl} onChange={e => updateForm('trends_cache_ttl', parseInt(e.target.value) || 3600)} />
                    </div>
                    <div>
                      <Label className="text-xs text-[var(--dg-text-secondary)]">Timeout (秒)</Label>
                      <Input className="mt-1 h-9 text-sm bg-[var(--dg-bg-primary)]" type="number" min={1}
                        value={form.trends_timeout} onChange={e => updateForm('trends_timeout', parseInt(e.target.value) || 30)} />
                    </div>
                  </div>
                </div>
              )}
            </div>

            {/* 其他设置 — 折叠 */}
            <div className="border border-[var(--dg-border)] rounded-lg overflow-hidden">
              <button className="w-full flex items-center justify-between px-3 py-2.5 text-sm hover:bg-[var(--dg-bg-tertiary)]"
                onClick={() => setShowOther(!showOther)}>
                <div className="flex items-center gap-2">
                  <Settings className="w-4 h-4" />
                  <span> {i18n.t('monitor.zabbixdatasourc.sdda36edb')} </span>
                </div>
                {showOther ? <ChevronUp className="w-4 h-4" /> : <ChevronDown className="w-4 h-4" />}
              </button>
              {showOther && (
                <div className="px-3 pb-3 space-y-3">
                  <div className="flex items-center justify-between">
                    <Label className="text-xs">Direct DB Connection</Label>
                    <Switch checked={form.direct_db} onCheckedChange={v => updateForm('direct_db', v)} />
                  </div>
                  <div className="flex items-center justify-between">
                    <Label className="text-xs"> {i18n.t('monitor.zabbixdatasourc.s413ec771')} </Label>
                    <Switch checked={form.disable_acknowledges} onCheckedChange={v => updateForm('disable_acknowledges', v)} />
                  </div>
                  <div className="flex items-center justify-between">
                    <Label className="text-xs"> {i18n.t('monitor.zabbixdatasourc.s6d4d6f81')} </Label>
                    <Switch checked={form.disable_data_alignment} onCheckedChange={v => updateForm('disable_data_alignment', v)} />
                  </div>
                </div>
              )}
            </div>

            {/* 测试结果 */}
            {testResult && (
              <div className={`flex items-center gap-2 p-2.5 rounded text-sm ${
                testResult.success ? 'bg-emerald-500/10 dg-text-green' : 'bg-red-500/10 dg-text-red'
              }`}>
                {testResult.success ? <CheckCircle2 className="h-4 w-4" /> : <XCircle className="h-4 w-4" />}
                {testResult.message}
              </div>
            )}
          </div>

          <DialogFooter className="gap-2">
            <Button variant="outline" size="sm" onClick={handleTest} disabled={testing}>
              <Plug className={`w-4 h-4 mr-1 ${testing ? 'animate-pulse' : ''}`} />
              测试连接
            </Button>
            <div className="flex-1" />
            <Button variant="ghost" size="sm" onClick={() => setDialogOpen(false)}> {i18n.t('rbac.jobRole.cancel')} </Button>
            <Button size="sm" onClick={handleSave}> {i18n.t('task.script.save')} </Button>
          </DialogFooter>
        </DialogContent>
      </Dialog>
    </div>
  );
}