import {
  Dialog,
  DialogContent,
  DialogDescription,
  DialogFooter,
  DialogHeader,
  DialogTitle,
} from '@/components/ui/dialog';
import { Button } from '@/components/ui/button';
import { Badge } from '@/components/ui/badge';
import { CheckCircle2, XCircle, Clock } from 'lucide-react';
import {
  renderFormData,
  renderStepProgress,
  getApprovalTypeLabel,
  getApprovalTypeColor,
  getInstanceType,
} from './helpers';
import type { JsonData } from '@/types/common';

interface ApprovalDetailDialogProps {
  open: boolean;
  onOpenChange: (open: boolean) => void;
  instance?: JsonData;
  templates: JsonData[];
  onApprove: (instance: JsonData) => void;
  onReject: (instance: JsonData) => void;
}

// 审批详情弹窗 — 展示流程详情/表单/进度/操作记录 // Logan.Li
export function ApprovalDetailDialog({
  open,
  onOpenChange,
  instance,
  templates,
  onApprove,
  onReject,
}: ApprovalDetailDialogProps) {
  if (!instance) return null;

  return (
    <Dialog open={open} onOpenChange={onOpenChange}>
      <DialogContent className="max-w-2xl bg-[var(--dg-bg-secondary)] border-[var(--dg-border)] max-h-[90vh] overflow-y-auto">
        <DialogHeader>
          <DialogTitle className="text-[var(--dg-text-primary)]">审批详情</DialogTitle>
          <DialogDescription className="text-[var(--dg-text-muted)]">查看审批流程详细信息</DialogDescription>
        </DialogHeader>
        <div className="space-y-4 py-2">
          <div>
            <h3 className="text-lg font-medium text-[var(--dg-text-primary)]">{instance.title}</h3>
            <div className="flex items-center gap-2 mt-1">
              <Badge variant="outline" className="text-xs border-[var(--dg-border)]" style={{ color: getApprovalTypeColor(getInstanceType(instance)) }}>
                {getApprovalTypeLabel(getInstanceType(instance))}
              </Badge>
              <span className="text-xs text-[var(--dg-text-muted)]">
                申请人：{instance.applicant_name || instance.applicant || '--'}
              </span>
              <span className="text-xs text-[var(--dg-text-muted)]">
                提交于 {instance.created_at ? new Date(instance.created_at).toLocaleString() : '--'}
              </span>
            </div>
          </div>

          {/* 审批内容 */}
          {instance.content && (
            <div className="bg-[var(--dg-bg-primary)] rounded-lg p-4">
              <p className="text-sm text-[var(--dg-text-secondary)] whitespace-pre-wrap">{instance.content}</p>
            </div>
          )}

          {/* 申请表单 */}
          {(() => {
            const tpl = templates.find((t) => t.id === instance.template_id);
            const rendered = renderFormData(instance.form_data, tpl);
            if (!rendered) return null;
            return (
              <div className="bg-[var(--dg-bg-primary)] rounded-lg p-4">
                <p className="text-sm font-medium text-[var(--dg-text-secondary)] mb-3">申请表单</p>
                {rendered}
              </div>
            );
          })()}

          {/* 审批进度 */}
          <div className="bg-[var(--dg-bg-primary)] rounded-lg p-4">
            <p className="text-sm font-medium text-[var(--dg-text-secondary)] mb-3">审批进度</p>
            {renderStepProgress(instance)}
          </div>

          {/* 操作记录 */}
          {instance.actions && (
            <div className="bg-[var(--dg-bg-primary)] rounded-lg p-4">
              <p className="text-sm font-medium text-[var(--dg-text-secondary)] mb-3">操作记录</p>
              <div className="space-y-2">
                {instance.actions.map((action: JsonData, index: number) => (
                  <div key={index} className="flex items-center gap-3 text-sm">
                    {action.action === 'approve' ? (
                      <CheckCircle2 className="h-4 w-4 text-emerald-400" />
                    ) : action.action === 'reject' ? (
                      <XCircle className="h-4 w-4 text-red-400" />
                    ) : (
                      <Clock className="h-4 w-4 text-[var(--dg-text-muted)]" />
                    )}
                    <div>
                      <span className="text-[var(--dg-text-secondary)]">
                        {action.operator_name || action.operator}
                      </span>
                      <span className="text-[var(--dg-text-muted)] mx-1">·</span>
                      <span className="text-[var(--dg-text-secondary)]">
                        {action.action === 'approve' ? '通过' : action.action === 'reject' ? '拒绝' : '提交'}
                      </span>
                      {action.comment && (
                        <p className="text-xs text-[var(--dg-text-muted)] mt-0.5">{action.comment}</p>
                      )}
                    </div>
                    <span className="text-xs text-[var(--dg-text-muted)] ml-auto">
                      {action.created_at ? new Date(action.created_at).toLocaleString() : ''}
                    </span>
                  </div>
                ))}
              </div>
            </div>
          )}
        </div>
        <DialogFooter>
          {instance.status === 'pending' && (
            <>
              <Button variant="outline" className="border-red-500/30 text-red-400 hover:bg-red-500/10" onClick={() => { onOpenChange(false); onReject(instance); }}>
                <XCircle className="h-4 w-4 mr-2" />拒绝
              </Button>
              <Button className="bg-emerald-500/90 hover:bg-emerald-500 text-white" onClick={() => { onOpenChange(false); onApprove(instance); }}>
                <CheckCircle2 className="h-4 w-4 mr-2" />通过
              </Button>
            </>
          )}
          <Button variant="ghost" onClick={() => onOpenChange(false)}>关闭</Button>
        </DialogFooter>
      </DialogContent>
    </Dialog>
  );
}