// Prometheus 数据源管理 — 列表编排器 // Logan.Li
import { useState, useEffect } from 'react';
import {
  Database,
  Plus,
  Edit,
  Trash2,
  Star,
  RefreshCw,
  Key,
  Plug,
} from 'lucide-react';

import { Button } from '@/components/ui/button';
import { Badge } from '@/components/ui/badge';
import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card';
import { toast } from 'sonner';
import { useConfirm } from '@/components/ui/confirm-dialog';
import { usePromDatasources, usePromDatasourceMutations } from '@/hooks/api';

import type { PromDS } from './prometheus-ds/types';
import { handleTestQuick } from './prometheus-ds/helpers';
import PromDsFormDialog from './prometheus-ds/PromDsFormDialog';

export default function PrometheusDatasourceManager() {
  const _confirm = useConfirm();
  const { data: sources = [], isLoading, isError } = usePromDatasources();
  const { deleteMutation, setDefaultMutation } = usePromDatasourceMutations();

  const [dialogOpen, setDialogOpen] = useState(false);
  const [editingDs, setEditingDs] = useState<PromDS | null>(null);

  useEffect(() => {
    if (isError) toast.error('获取数据源列表失败');
  }, [isError]);

  const openCreate = () => {
    setEditingDs(null);
    setDialogOpen(true);
  };

  const openEdit = (ds: PromDS) => {
    setEditingDs(ds);
    setDialogOpen(true);
  };

  const handleDelete = async (ds: PromDS) => {
    const ok = await _confirm({
      title: '删除数据源',
      description: `确定删除数据源「${ds.name}」吗？此操作不可撤销。`,
      variant: 'destructive',
    });
    if (!ok) return;
    try {
      await deleteMutation.mutateAsync(ds.id);
      toast.success('已删除');
    } catch {
      toast.error('删除失败');
    }
  };

  const handleSetDefault = async (ds: PromDS) => {
    try {
      await setDefaultMutation.mutateAsync(ds.id);
      toast.success(`已将「${ds.name}」设为默认数据源`);
    } catch {
      toast.error('设置失败');
    }
  };

  if (isLoading) {
    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="p-6 space-y-6 max-w-7xl mx-auto">
      {/* 页头 */}
      <div className="flex items-center justify-between">
        <div>
          <h1 className="text-2xl font-bold text-[var(--dg-text-primary)]">数据源管理</h1>
          <p className="text-sm text-[var(--dg-text-secondary)] mt-1">
            Prometheus 数据源配置，用于指标监控与监控大屏
          </p>
        </div>
        <Button onClick={openCreate} className="gap-2">
          <Plus className="w-4 h-4" />
          添加数据源
        </Button>
      </div>

      {/* 数据源列表 */}
      <Card className="border-[var(--dg-border)] bg-[var(--dg-bg-secondary)]">
        <CardHeader className="pb-2">
          <CardTitle className="text-base flex items-center gap-2">
            <Database className="w-4 h-4 text-blue-400" />
            已配置的数据源
            <Badge variant="secondary" className="ml-2">{sources.length}</Badge>
          </CardTitle>
        </CardHeader>
        <CardContent className="p-0">
          {sources.length === 0 ? (
            <div className="py-12 text-center text-[var(--dg-text-secondary)]">
              <Database className="w-12 h-12 mx-auto mb-3 opacity-30" />
              <p className="text-sm">暂无数据源</p>
              <p className="text-xs mt-1">点击「添加数据源」开始配置</p>
            </div>
          ) : (
            <div className="overflow-x-auto">
              <table className="w-full">
                <thead className="border-b border-[var(--dg-border)]">
                  <tr className="text-xs text-[var(--dg-text-secondary)]">
                    <th className="text-left py-3 px-4 font-medium">名称</th>
                    <th className="text-left py-3 px-4 font-medium">URL</th>
                    <th className="text-left py-3 px-4 font-medium w-20">默认</th>
                    <th className="text-left py-3 px-4 font-medium w-16">状态</th>
                    <th className="text-right py-3 px-4 font-medium w-36">操作</th>
                  </tr>
                </thead>
                <tbody>
                  {sources.map(ds => (
                    <tr
                      key={ds.id}
                      className="border-b border-[var(--dg-border)]/50 hover:bg-[var(--dg-bg-tertiary)]/50 transition-colors"
                    >
                      <td className="py-3 px-4">
                        <div className="flex items-center gap-2">
                          <img
                            src="https://cdn.jsdelivr.net/gh/walkxcode/dashboard-icons@master/png/prometheus.png"
                            alt="Prometheus"
                            className="w-5 h-5 rounded"
                            onError={(e) => { (e.target as HTMLImageElement).style.display = 'none'; }}
                          />
                          <div>
                            <span className="text-sm font-medium text-[var(--dg-text-primary)]">{ds.name}</span>
                            {ds.basic_auth && <Key className="w-3 h-3 inline ml-1.5 text-amber-400" />}
                          </div>
                        </div>
                      </td>
                      <td className="py-3 px-4">
                        <code className="text-xs text-blue-300 bg-slate-800/50 px-2 py-0.5 rounded max-w-[320px] block truncate"
                          title={ds.url}>
                          {ds.url}
                        </code>
                      </td>
                      <td className="py-3 px-4">
                        {ds.is_default ? (
                          <Badge variant="default" className="bg-amber-500/15 text-amber-400 border-amber-500/30 text-xs">
                            <Star className="w-3 h-3 mr-1" /> 默认
                          </Badge>
                        ) : (
                          <span className="text-xs text-[var(--dg-text-secondary)]">--</span>
                        )}
                      </td>
                      <td className="py-3 px-4">
                        {ds.status === 1 ? (
                          <Badge variant="default" className="bg-emerald-500/15 text-emerald-400 border-emerald-500/30 text-xs">
                            启用
                          </Badge>
                        ) : (
                          <Badge variant="secondary" className="text-xs">禁用</Badge>
                        )}
                      </td>
                      <td className="py-3 px-4">
                        <div className="flex items-center justify-end gap-1">
                          <Button
                            variant="ghost" size="sm"
                            className="h-8 px-2"
                            onClick={() => handleTestQuick(ds)}
                            title="测试连接"
                          >
                            <Plug className="w-3.5 h-3.5" />
                          </Button>
                          {!ds.is_default && (
                            <Button
                              variant="ghost" size="sm"
                              className="h-8 px-2 text-amber-400 hover:text-amber-300"
                              onClick={() => handleSetDefault(ds)}
                              title="设为默认"
                            >
                              <Star className="w-3.5 h-3.5" />
                            </Button>
                          )}
                          <Button
                            variant="ghost" size="sm"
                            className="h-8 px-2"
                            onClick={() => openEdit(ds)}
                          >
                            <Edit className="w-3.5 h-3.5" />
                          </Button>
                          <Button
                            variant="ghost" size="sm"
                            className="h-8 px-2 text-red-400 hover:text-red-300"
                            onClick={() => handleDelete(ds)}
                          >
                            <Trash2 className="w-3.5 h-3.5" />
                          </Button>
                        </div>
                      </td>
                    </tr>
                  ))}
                </tbody>
              </table>
            </div>
          )}
        </CardContent>
      </Card>

      <PromDsFormDialog
        open={dialogOpen}
        onOpenChange={setDialogOpen}
        editingDs={editingDs}
        sources={sources}
      />
    </div>
  );
}