// 云账单预警规则弹窗（新建/编辑）— 自包含状态，从 CloudBilling 提取 // Logan.Li
import { useState, useEffect } from 'react';
import { Button } from '@/components/ui/button';
import { Input } from '@/components/ui/input';
import { Label } from '@/components/ui/label';
import { Switch } from '@/components/ui/switch';
import {
  Dialog,
  DialogContent,
  DialogDescription,
  DialogFooter,
  DialogHeader,
  DialogTitle,
} from '@/components/ui/dialog';
import {
  Select,
  SelectContent,
  SelectItem,
  SelectTrigger,
  SelectValue,
} from '@/components/ui/select';
import { Loader2 } from 'lucide-react';
import { toast } from 'sonner';
import { billingApi } from '@/services/api';
import { providerLabels } from './CloudBillingHelpers';

const emptyRule = { name: '', provider: '', metric: 'daily', threshold: '', operator: '>', enabled: true };

interface Props {
  open: boolean;
  onOpenChange: (open: boolean) => void;
  editingRule: any | null;
  onSuccess: () => void;
}

export function BillingRuleDialog({ open, onOpenChange, editingRule, onSuccess }: Props) {
  const [form, setForm] = useState<any>(emptyRule);
  const [submitting, setSubmitting] = useState(false);

  // 弹窗打开时初始化表单 // Logan.Li
  useEffect(() => {
    if (!open) return;
    if (editingRule) {
      setForm({
        name: editingRule.name,
        provider: editingRule.provider || '',
        metric: editingRule.metric || 'daily',
        threshold: editingRule.threshold,
        operator: editingRule.operator || '>',
        enabled: editingRule.enabled,
      });
    } else {
      setForm({ ...emptyRule });
    }
  }, [open, editingRule]);

  const handleSave = async () => {
    if (!form.name || !form.threshold) {
      toast.error('请填写规则名称和阈值');
      return;
    }
    setSubmitting(true);
    try {
      const data = { ...form, threshold: parseFloat(form.threshold) };
      if (editingRule) {
        await billingApi.updateAlertRule(editingRule.id, data);
      } else {
        await billingApi.createAlertRule(data);
      }
      onOpenChange(false);
      onSuccess();
      toast('保存成功');
    } catch (e: any) {
      toast.error('保存失败', { description: (e as Record<string, any>).message });
    } finally {
      setSubmitting(false);
    }
  };

  return (
    <Dialog open={open} onOpenChange={onOpenChange}>
      <DialogContent className="max-w-md">
        <DialogHeader>
          <DialogTitle>{editingRule ? '编辑预警规则' : '添加预警规则'}</DialogTitle>
          <DialogDescription>设置成本阈值，超标时自动预警</DialogDescription>
        </DialogHeader>
        <div className="space-y-3">
          <div>
            <Label className="text-sm text-slate-300">规则名称 *</Label>
            <Input className="mt-1" placeholder="如：日成本超 500 元预警" value={form.name} onChange={(e) => setForm({ ...form, name: e.target.value })} />
          </div>
          <div className="grid grid-cols-2 gap-3">
            <div>
              <Label className="text-sm text-slate-300">厂商</Label>
              <Select value={form.provider || 'all'} onValueChange={(v) => setForm({ ...form, provider: v === 'all' ? '' : v })}>
                <SelectTrigger className="mt-1"><SelectValue /></SelectTrigger>
                <SelectContent>
                  <SelectItem value="all">全部厂商</SelectItem>
                  {Object.entries(providerLabels).map(([k, v]) => (
                    <SelectItem key={k} value={k}>{v}</SelectItem>
                  ))}
                </SelectContent>
              </Select>
            </div>
            <div>
              <Label className="text-sm text-slate-300">指标</Label>
              <Select value={form.metric} onValueChange={(v) => setForm({ ...form, metric: v })}>
                <SelectTrigger className="mt-1"><SelectValue /></SelectTrigger>
                <SelectContent>
                  <SelectItem value="daily">日成本</SelectItem>
                  <SelectItem value="monthly">月累计</SelectItem>
                </SelectContent>
              </Select>
            </div>
          </div>
          <div className="grid grid-cols-2 gap-3">
            <div>
              <Label className="text-sm text-slate-300">比较</Label>
              <Select value={form.operator} onValueChange={(v) => setForm({ ...form, operator: v })}>
                <SelectTrigger className="mt-1"><SelectValue /></SelectTrigger>
                <SelectContent>
                  <SelectItem value=">">大于 &gt;</SelectItem>
                  <SelectItem value=">=">大于等于 &ge;</SelectItem>
                  <SelectItem value="<">小于 &lt;</SelectItem>
                  <SelectItem value="<=">小于等于 &le;</SelectItem>
                </SelectContent>
              </Select>
            </div>
            <div>
              <Label className="text-sm text-slate-300">阈值(元) *</Label>
              <Input type="number" step="0.01" className="mt-1" placeholder="500.00" value={form.threshold} onChange={(e) => setForm({ ...form, threshold: e.target.value })} />
            </div>
          </div>
          <div className="flex items-center gap-2">
            <Switch checked={form.enabled} onCheckedChange={(v) => setForm({ ...form, enabled: v })} />
            <Label className="text-sm text-slate-300">启用</Label>
          </div>
        </div>
        <DialogFooter>
          <Button variant="outline" onClick={() => onOpenChange(false)}>取消</Button>
          <Button onClick={handleSave} disabled={submitting}>
            {submitting && <Loader2 className="h-4 w-4 mr-1 animate-spin" />}
            保存
          </Button>
        </DialogFooter>
      </DialogContent>
    </Dialog>
  );
}