'use client';

import { useEffect, useState, useCallback } from 'react';
import Link from 'next/link';
import { useRouter } from 'next/navigation';
import { useForm } from 'react-hook-form';
import { zodResolver } from '@hookform/resolvers/zod';
import * as z from 'zod';
import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card';
import { Button } from '@/components/ui/button';
import { Input } from '@/components/ui/input';
import { Textarea } from '@/components/ui/textarea';
import { Select, SelectContent, SelectItem, SelectTrigger, SelectValue } from '@/components/ui/select';
import { Form, FormControl, FormField, FormItem, FormLabel, FormMessage } from '@/components/ui/form';
import { Switch } from '@/components/ui/switch';
import { Dialog, DialogContent, DialogHeader, DialogTitle, DialogTrigger } from '@/components/ui/dialog';
import { AlertDialog, AlertDialogAction, AlertDialogCancel, AlertDialogContent, AlertDialogDescription, AlertDialogFooter, AlertDialogHeader, AlertDialogTitle, AlertDialogTrigger } from '@/components/ui/alert-dialog';
import { StatusBadge, StatusDot } from '@/components/status-badge';
import { ProgressRing } from '@/components/progress-ring';
import { useUser } from '@/components/user-context';
import { Label } from '@/components/ui/label';
import {
  calculateProgress,
  calculateExpectedProgress,
  getDaysRemaining,
  formatDateRange,
  isKRActive,
} from '@/lib/kr-utils';
import { REASON_CODES, PERIOD_TYPES, DIRECTION_LABELS } from '@/lib/constants';
import { toast } from 'sonner';
import { TaskEditDialog } from '@/components/task-edit-dialog';
import type { KR, User, Checkin, Objective, Task, TaskStep } from '@/types/database';
import {
  ArrowLeft,
  Plus,
  Clock,
  TrendingUp,
  TrendingDown,
  Target,
  AlertTriangle,
  Calendar,
  User as UserIcon,
  HandHelping,
  Loader2,
  Pencil,
  Trash2,
  CheckSquare,
} from 'lucide-react';

import { getErrorMessage } from '@/lib/error-utils';

interface KRWithRelations extends KR {
  owner: User | null;
  project: { id: string; name: string; status: string } | null;
  objective: Objective | null;
}

interface CheckinWithRelations extends Checkin {
  user: User | null;
}

import { RadioGroup, RadioGroupItem } from '@/components/ui/radio-group';

const checkinSchema = z.object({
  current_value: z.number(),
  confidence: z.number().min(0).max(100),
  reason_code: z.string().optional(),
  note: z.string().optional(),
});

type CheckinFormValues = z.infer<typeof checkinSchema>;

export default function KRDetailPage({ krId }: { krId: string }) {
  const router = useRouter();
  const { currentUser } = useUser();

  const [kr, setKR] = useState<KRWithRelations | null>(null);
  const [checkins, setCheckins] = useState<CheckinWithRelations[]>([]);
  const [tasks, setTasks] = useState<(Task & { steps: TaskStep[] })[]>([]);
  const [isLoading, setIsLoading] = useState(true);
  const [loadError, setLoadError] = useState<string | null>(null);
  const [isCheckinOpen, setIsCheckinOpen] = useState(false);
  const [isSubmitting, setIsSubmitting] = useState(false);
  const [isDeleting, setIsDeleting] = useState(false);
  const [isEditing, setIsEditing] = useState(false);
  const [isEditDialogOpen, setIsEditDialogOpen] = useState(false);
  const [isTaskDialogOpen, setIsTaskDialogOpen] = useState(false);
  const [editingTask, setEditingTask] = useState<(Task & { steps: TaskStep[] }) | null>(null);

  const fetchData = useCallback(async () => {
    try {
      const [krRes, checkinsRes, tasksRes] = await Promise.all([
        fetch(`/api/krs/${krId}`),
        fetch(`/api/checkins?kr_id=${krId}`),
        fetch(`/api/tasks?kr_id=${krId}`),
      ]);

      if (krRes.status === 403) {
        setLoadError('你没有权限查看此 KR');
        setKR(null);
        return;
      }
      if (krRes.status === 404) {
        setLoadError('KR 不存在');
        setKR(null);
        return;
      }

      if (krRes.ok) {
        const krData = await krRes.json();
        setKR(krData);
        setLoadError(null);
      }

      if (checkinsRes.ok) {
        const checkinsData = await checkinsRes.json();
        setCheckins(checkinsData);
      }

      if (tasksRes.ok) {
        const tasksData = await tasksRes.json();
        setTasks(tasksData);
      }
    } catch (error) {
      console.error('Failed to fetch KR data:', error);
      setLoadError('加载失败');
    } finally {
      setIsLoading(false);
    }
  }, [krId]);

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

  const form = useForm<CheckinFormValues>({
    resolver: zodResolver(checkinSchema),
    defaultValues: {
      current_value: kr?.current_value || 0,
      confidence: kr?.confidence || 80,
      reason_code: '',
      note: '',
    },
  });

  useEffect(() => {
    if (kr) {
      form.reset({
        current_value: kr.current_value,
        confidence: kr.confidence,
        reason_code: kr.reason_code || '',
        note: '',
      });
    }
  }, [kr, form]);

  const onCheckinSubmit = async (values: CheckinFormValues) => {
    if (!kr) return;

    setIsSubmitting(true);
    try {
      const res = await fetch('/api/checkins', {
        method: 'POST',
        headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify({
          kr_id: kr.id,
          project_id: kr.project_id,
          user_id: currentUser?.id,
          current_value: values.current_value,
          confidence: values.confidence,
          reason_code: values.reason_code || null,
          note: values.note || null,
        }),
      });

      if (!res.ok) {
        const data = await res.json();
        throw new Error(data.error || '打卡失败');
      }

      toast.success('打卡成功');
      setIsCheckinOpen(false);
      fetchData();
    } catch (error) {
      toast.error(getErrorMessage(error));
    } finally {
      setIsSubmitting(false);
    }
  };

  const toggleNeedHelp = async () => {
    if (!kr) return;

    try {
      const res = await fetch(`/api/krs/${kr.id}`, {
        method: 'PATCH',
        headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify({
          need_owner_help: !kr.need_owner_help,
          skipReasonCodeCheck: true,
        }),
      });

      if (res.ok) {
        toast.success(kr.need_owner_help ? '已取消求助' : '已发送求助请求');
        fetchData();
      }
    } catch (error) {
      toast.error('操作失败');
    }
  };

  const handleDeleteKR = async () => {
    if (!kr) return;
    setIsDeleting(true);
    try {
      const res = await fetch(`/api/krs/${kr.id}`, { method: 'DELETE' });
      if (!res.ok) throw new Error('删除失败');
      toast.success('KR 已删除');
      router.push(`/projects/${kr.project_id}`);
    } catch (error) {
      toast.error(getErrorMessage(error));
    } finally {
      setIsDeleting(false);
    }
  };

  const handleEditKR = async (e: React.FormEvent<HTMLFormElement>) => {
    e.preventDefault();
    if (!kr) return;

    setIsEditing(true);
    const formData = new FormData(e.currentTarget);
    
    try {
      const res = await fetch(`/api/krs/${kr.id}`, {
        method: 'PATCH',
        headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify({
          title: formData.get('title'),
          metric_name: formData.get('metric_name'),
          unit: formData.get('unit'),
          target_value: parseFloat(formData.get('target_value') as string),
          period_start: formData.get('period_start'),
          period_end: formData.get('period_end'),
        }),
      });

      if (!res.ok) throw new Error('更新失败');
      
      toast.success('KR 已更新');
      setIsEditDialogOpen(false);
      fetchData();
    } catch (error) {
      toast.error(getErrorMessage(error));
    } finally {
      setIsEditing(false);
    }
  };

  if (isLoading) {
    return (
      <div className="max-w-4xl mx-auto px-4 py-8">
        <div className="animate-pulse space-y-6">
          <div className="h-6 bg-slate-200 rounded w-24" />
          <div className="h-10 bg-slate-200 rounded w-64" />
          <div className="grid grid-cols-1 lg:grid-cols-3 gap-6">
            <div className="lg:col-span-2 h-96 bg-slate-200 rounded-lg" />
            <div className="h-64 bg-slate-200 rounded-lg" />
          </div>
        </div>
      </div>
    );
  }

  if (!kr) {
    return (
      <div className="max-w-4xl mx-auto px-4 py-8 text-center">
        <p className="text-muted-foreground">{loadError || 'KR 不存在'}</p>
        <Button asChild className="mt-4" variant="outline">
          <Link href="/my-krs">返回我的 KR</Link>
        </Button>
      </div>
    );
  }

  const progress = calculateProgress(kr);
  const expectedProgress = calculateExpectedProgress(kr);
  const daysLeft = getDaysRemaining(kr.period_end);
  const isActive = isKRActive(kr);
  const isOwner = currentUser?.id === kr.owner_user_id;
  const TrendIcon = kr.direction === 'increase' ? TrendingUp : TrendingDown;

  const handleTaskStatusChange = async (taskId: string, newStatus: string) => {
    try {
      const res = await fetch(`/api/tasks/${taskId}`, {
        method: 'PATCH',
        headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify({ status: newStatus }),
      });
      if (res.ok) {
        setTasks(tasks.map(t => t.id === taskId ? { ...t, status: newStatus as any } : t));
        toast.success('计划状态已更新');
      }
    } catch (error) {
      toast.error('更新失败');
    }
  };

  const isBooleanMetric = kr?.unit === '状态' && kr?.metric_name === '完成状态';

  return (
    <div className="max-w-4xl mx-auto px-4 py-8">
      <div className="mb-6">
        <Link
          href="/my-krs"
          className="inline-flex items-center text-sm text-muted-foreground hover:text-slate-800 mb-4"
        >
          <ArrowLeft className="h-4 w-4 mr-1" />
          返回我的 KR
        </Link>

        <div className="flex items-start justify-between">
          <div>
            <div className="flex items-center gap-3 mb-2">
              <h1 className="text-2xl font-bold text-slate-800">{kr.title}</h1>
              <StatusBadge status={kr.status} />
              {kr.need_owner_help && (
                <span className="text-xs bg-amber-100 text-amber-700 px-2 py-1 rounded flex items-center gap-1">
                  <HandHelping className="h-3 w-3" />
                  需要帮助
                </span>
              )}
            </div>
            <div className="flex items-center gap-3 text-sm text-muted-foreground">
              <Link href={`/projects/${kr.project_id}`} className="hover:text-slate-800">
                {kr.project?.name}
              </Link>
              <span>|</span>
              <span className="flex items-center gap-1">
                <UserIcon className="h-4 w-4" />
                {kr.owner?.name || '未分配'}
              </span>
              <span>|</span>
              <span className="flex items-center gap-1">
                <Calendar className="h-4 w-4" />
                {formatDateRange(kr.period_start, kr.period_end)}
              </span>
            </div>
          </div>

          {isActive && (
            <div className="flex gap-2">
              {currentUser?.role === 'owner' && (
                <>
                  <Dialog open={isEditDialogOpen} onOpenChange={setIsEditDialogOpen}>
                    <DialogTrigger asChild>
                      <Button variant="outline" size="icon">
                        <Pencil className="h-4 w-4" />
                      </Button>
                    </DialogTrigger>
                    <DialogContent>
                      <DialogHeader>
                        <DialogTitle>编辑 KR</DialogTitle>
                      </DialogHeader>
                      <form onSubmit={handleEditKR} className="space-y-4">
                        <div>
                          <Label htmlFor="kr-title">KR 标题</Label>
                          <Input id="kr-title" name="title" defaultValue={kr.title} required />
                        </div>
                        <div className="grid grid-cols-2 gap-4">
                          <div>
                            <Label htmlFor="kr-metric">指标名称</Label>
                            <Input id="kr-metric" name="metric_name" defaultValue={kr.metric_name} required />
                          </div>
                          <div>
                            <Label htmlFor="kr-unit">单位</Label>
                            <Input id="kr-unit" name="unit" defaultValue={kr.unit} required />
                          </div>
                        </div>
                        <div>
                          <Label htmlFor="kr-target">目标值</Label>
                          <Input type="number" step="any" id="kr-target" name="target_value" defaultValue={kr.target_value} required />
                        </div>
                        <div className="grid grid-cols-2 gap-4">
                          <div>
                            <Label htmlFor="kr-start">开始日期</Label>
                            <Input type="date" id="kr-start" name="period_start" defaultValue={kr.period_start} required />
                          </div>
                          <div>
                            <Label htmlFor="kr-end">结束日期</Label>
                            <Input type="date" id="kr-end" name="period_end" defaultValue={kr.period_end} required />
                          </div>
                        </div>
                        <Button type="submit" disabled={isEditing} className="w-full">
                          {isEditing && <Loader2 className="h-4 w-4 mr-2 animate-spin" />}
                          保存修改
                        </Button>
                      </form>
                    </DialogContent>
                  </Dialog>

                  <AlertDialog>
                    <AlertDialogTrigger asChild>
                      <Button variant="outline" size="icon" className="text-rose-500 hover:text-rose-600">
                        <Trash2 className="h-4 w-4" />
                      </Button>
                    </AlertDialogTrigger>
                    <AlertDialogContent>
                      <AlertDialogHeader>
                        <AlertDialogTitle>确定要删除此 KR 吗？</AlertDialogTitle>
                        <AlertDialogDescription>
                          此操作无法撤销。这将永久删除 KR 及其所有打卡记录。
                        </AlertDialogDescription>
                      </AlertDialogHeader>
                      <AlertDialogFooter>
                        <AlertDialogCancel>取消</AlertDialogCancel>
                        <AlertDialogAction
                          onClick={handleDeleteKR}
                          className="bg-rose-600 hover:bg-rose-700"
                          disabled={isDeleting}
                        >
                          {isDeleting && <Loader2 className="h-4 w-4 mr-2 animate-spin" />}
                          删除
                        </AlertDialogAction>
                      </AlertDialogFooter>
                    </AlertDialogContent>
                  </AlertDialog>
                </>
              )}
              <Dialog open={isCheckinOpen} onOpenChange={setIsCheckinOpen}>
                <DialogTrigger asChild>
                  <Button className="bg-teal-600 hover:bg-teal-700">
                    <Plus className="h-4 w-4 mr-2" />
                    打卡更新
                  </Button>
                </DialogTrigger>
                <DialogContent>
                  <DialogHeader>
                    <DialogTitle>KR 进度打卡</DialogTitle>
                  </DialogHeader>
                  <Form {...form}>
                    <form onSubmit={form.handleSubmit(onCheckinSubmit)} className="space-y-4">
                      <FormField
                        control={form.control}
                        name="current_value"
                        render={({ field }) => (
                          <FormItem>
                            <FormLabel>当前状态</FormLabel>
                            <FormControl>
                              {isBooleanMetric ? (
                                <RadioGroup
                                  onValueChange={(val) => field.onChange(parseInt(val))}
                                  defaultValue={field.value.toString()}
                                  className="flex flex-col space-y-1"
                                >
                                  <div className="flex items-center space-x-2">
                                    <RadioGroupItem value="0" id="r1" />
                                    <Label htmlFor="r1">待完成</Label>
                                  </div>
                                  <div className="flex items-center space-x-2">
                                    <RadioGroupItem value="1" id="r2" />
                                    <Label htmlFor="r2">已完成</Label>
                                  </div>
                                </RadioGroup>
                              ) : (
                                <>
                                  <Input
                                    type="number"
                                    step="any"
                                    {...field}
                                    onChange={e => field.onChange(parseFloat(e.target.value) || 0)}
                                  />
                                  <p className="text-xs text-muted-foreground">
                                    目标值: {kr.target_value} {kr.unit}
                                  </p>
                                </>
                              )}
                            </FormControl>
                            <FormMessage />
                          </FormItem>
                        )}
                      />

                      <FormField
                        control={form.control}
                        name="confidence"
                        render={({ field }) => (
                          <FormItem>
                            <FormLabel>信心度 ({field.value}%)</FormLabel>
                            <FormControl>
                              <Input
                                type="range"
                                min="0"
                                max="100"
                                {...field}
                                onChange={e => field.onChange(parseInt(e.target.value))}
                                className="w-full"
                              />
                            </FormControl>
                            <div className="flex justify-between text-xs text-muted-foreground">
                              <span>0%</span>
                              <span>50%</span>
                              <span>100%</span>
                            </div>
                            <FormMessage />
                          </FormItem>
                        )}
                      />

                      <FormField
                        control={form.control}
                        name="reason_code"
                        render={({ field }) => (
                          <FormItem>
                            <FormLabel>问题原因 (如有)</FormLabel>
                            <Select
                              onValueChange={(value) => field.onChange(value === "unspecified" ? "" : value)}
                              value={field.value || "unspecified"}
                            >
                              <FormControl>
                                <SelectTrigger>
                                  <SelectValue placeholder="选择原因类型" />
                                </SelectTrigger>
                              </FormControl>
                              <SelectContent>
                                <SelectItem value="unspecified">无问题</SelectItem>
                                {Object.entries(REASON_CODES).map(([key, label]) => (
                                  <SelectItem key={key} value={key}>
                                    {label}
                                  </SelectItem>
                                ))}
                              </SelectContent>
                            </Select>
                            <FormMessage />
                          </FormItem>
                        )}
                      />

                      <FormField
                        control={form.control}
                        name="note"
                        render={({ field }) => (
                          <FormItem>
                            <FormLabel>备注</FormLabel>
                            <FormControl>
                              <Textarea placeholder="补充说明" rows={2} {...field} />
                            </FormControl>
                            <FormMessage />
                          </FormItem>
                        )}
                      />

                      <Button type="submit" className="w-full" disabled={isSubmitting}>
                        {isSubmitting && <Loader2 className="h-4 w-4 mr-2 animate-spin" />}
                        提交打卡
                      </Button>
                    </form>
                  </Form>
                </DialogContent>
              </Dialog>
            </div>
          )}
        </div>
      </div>

      <div className="grid grid-cols-1 lg:grid-cols-3 gap-6">
        <div className="lg:col-span-2 space-y-6">
          <Card>
            <CardContent className="pt-6">
              <div className="flex items-center justify-between mb-6">
                <div className="flex items-center gap-6">
                  <ProgressRing progress={progress} status={kr.status} size={100} strokeWidth={8} />
                  <div>
                    <p className="text-3xl font-bold text-slate-800">
                      {isBooleanMetric 
                        ? (kr.current_value >= 1 ? '已完成' : '待完成') 
                        : `${kr.current_value} / ${kr.target_value}`
                      }
                    </p>
                    {!isBooleanMetric && <p className="text-muted-foreground">{kr.unit}</p>}
                    <div className="flex items-center gap-2 mt-2">
                      <TrendIcon className="h-4 w-4 text-muted-foreground" />
                      <span className="text-sm text-muted-foreground">
                        {DIRECTION_LABELS[kr.direction]}
                      </span>
                    </div>
                  </div>
                </div>
                <div className="text-right">
                  <p className="text-sm text-muted-foreground mb-1">期望进度</p>
                  <p className="text-2xl font-semibold text-slate-600">
                    {Math.round(expectedProgress * 100)}%
                  </p>
                  {isActive && (
                    <p className={`text-sm ${daysLeft <= 3 ? 'text-amber-600' : 'text-muted-foreground'}`}>
                      <Clock className="h-3 w-3 inline mr-1" />
                      剩余 {daysLeft} 天
                    </p>
                  )}
                </div>
              </div>

              {kr.reason_code && kr.status !== 'green' && (
                <div className="bg-amber-50 rounded-lg p-4 flex items-start gap-3">
                  <AlertTriangle className="h-5 w-5 text-amber-500 mt-0.5" />
                  <div>
                    <p className="font-medium text-amber-800">{REASON_CODES[kr.reason_code]}</p>
                    {kr.note && <p className="text-sm text-amber-700 mt-1">{kr.note}</p>}
                  </div>
                </div>
              )}
            </CardContent>
          </Card>

          <Card>
            <CardHeader className="flex flex-row items-center justify-between">
              <CardTitle className="text-lg flex items-center gap-2">
                <CheckSquare className="h-5 w-5 text-indigo-600" />
                执行计划 ({tasks.length})
              </CardTitle>
              {isActive && (
                <Button 
                  size="sm" 
                  variant="outline" 
                  className="text-indigo-600 border-indigo-200 hover:bg-indigo-50"
                  onClick={() => {
                    setEditingTask(null);
                    setIsTaskDialogOpen(true);
                  }}
                >
                  <Plus className="h-4 w-4 mr-1" />
                  新建计划
                </Button>
              )}
            </CardHeader>
            <CardContent>
              {tasks.length === 0 ? (
                <div className="text-center py-8 border border-dashed rounded-lg bg-slate-50">
                  <p className="text-muted-foreground text-sm">暂无计划，拆解 KR 为具体执行步骤</p>
                </div>
              ) : (
                <div className="space-y-3">
                  {tasks.map(task => (
                    <div 
                      key={task.id} 
                      className="group p-3 bg-white border rounded-lg hover:shadow-sm transition-all cursor-pointer"
                      onClick={() => {
                        setEditingTask(task);
                        setIsTaskDialogOpen(true);
                      }}
                    >
                      <div className="flex items-start gap-3">
                        <div 
                          className="mt-1"
                          onClick={(e) => {
                            e.stopPropagation();
                            handleTaskStatusChange(task.id, task.status === 'done' ? 'todo' : 'done');
                          }}
                        >
                          <div className={`w-5 h-5 rounded border flex items-center justify-center ${task.status === 'done' ? 'bg-indigo-600 border-indigo-600' : 'border-slate-300 hover:border-indigo-500'}`}>
                            {task.status === 'done' && <CheckSquare className="h-3.5 w-3.5 text-white" />}
                          </div>
                        </div>
                        <div className="flex-1 min-w-0">
                          <div className="flex items-center justify-between mb-1">
                            <p className={`font-medium text-slate-800 truncate ${task.status === 'done' ? 'line-through text-slate-400' : ''}`}>
                              {task.title}
                            </p>
                            <StatusBadge 
                              status={task.status === 'done' ? 'green' : (task.status === 'in_progress' ? 'yellow' : 'red')} 
                              size="sm" 
                              text={task.status === 'done' ? '已完成' : (task.status === 'in_progress' ? '进行中' : '待办')} 
                            />
                          </div>
                          
                          <div className="flex items-center gap-3 text-xs text-muted-foreground">
                            {task.owner_user_id && (
                              <span className="flex items-center gap-1">
                                <UserIcon className="h-3 w-3" />
                                {currentUser?.name}
                              </span>
                            )}
                            <span className="flex items-center gap-1">
                              <Calendar className="h-3 w-3" />
                              {formatDateRange(task.start_date || '', task.end_date || '')}
                            </span>
                            {task.steps.length > 0 && (
                              <span className="bg-slate-100 px-1.5 rounded">
                                {task.steps.filter(s => s.is_completed).length}/{task.steps.length} 步骤
                              </span>
                            )}
                          </div>
                        </div>
                      </div>
                    </div>
                  ))}
                </div>
              )}
            </CardContent>
          </Card>

          <Card>
            <CardHeader>
              <CardTitle className="text-lg">打卡记录</CardTitle>
            </CardHeader>
            <CardContent>
              {checkins.length === 0 ? (
                <p className="text-center text-muted-foreground py-8">暂无打卡记录</p>
              ) : (
                <div className="space-y-4">
                  {checkins.map((checkin, index) => (
                    <div key={checkin.id} className="flex items-start gap-4">
                      <div className="flex flex-col items-center">
                        <StatusDot status={checkin.status_snapshot} size="md" />
                        {index < checkins.length - 1 && (
                          <div className="w-0.5 h-12 bg-slate-200 mt-2" />
                        )}
                      </div>
                      <div className="flex-1 pb-4">
                        <div className="flex items-center justify-between mb-1">
                          <span className="font-medium">
                            {isBooleanMetric 
                              ? (checkin.current_value >= 1 ? '已完成' : '待完成') 
                              : `${checkin.current_value} ${kr.unit}`
                            }
                          </span>
                          <span className="text-sm text-muted-foreground">
                            {new Date(checkin.created_at).toLocaleString('zh-CN', {
                              month: 'short',
                              day: 'numeric',
                              hour: '2-digit',
                              minute: '2-digit',
                            })}
                          </span>
                        </div>
                        <div className="text-sm text-muted-foreground">
                          {checkin.user?.name} | 信心度 {checkin.confidence}%
                          {checkin.delta_value !== null && checkin.delta_value !== 0 && (
                            <span className={checkin.delta_value > 0 ? 'text-emerald-600' : 'text-rose-600'}>
                              {' '}({checkin.delta_value > 0 ? '+' : ''}{checkin.delta_value})
                            </span>
                          )}
                        </div>
                        {checkin.reason_code && (
                          <p className="text-sm text-amber-600 mt-1">
                            {REASON_CODES[checkin.reason_code]}
                          </p>
                        )}
                        {checkin.note && (
                          <p className="text-sm text-slate-600 mt-1">{checkin.note}</p>
                        )}
                      </div>
                    </div>
                  ))}
                </div>
              )}
            </CardContent>
          </Card>
        </div>

        <div className="space-y-6">
          <Card>
            <CardHeader>
              <CardTitle className="text-lg">KR 详情</CardTitle>
            </CardHeader>
            <CardContent className="space-y-4">
              <div>
                <p className="text-sm text-muted-foreground">周期类型</p>
                <p className="font-medium">{PERIOD_TYPES[kr.period_type]}</p>
              </div>
              <div>
                <p className="text-sm text-muted-foreground">指标名称</p>
                <p className="font-medium">{kr.metric_name}</p>
              </div>
              <div>
                <p className="text-sm text-muted-foreground">信心度</p>
                <p className="font-medium">{kr.confidence}%</p>
              </div>
              {kr.objective && (
                <div>
                  <p className="text-sm text-muted-foreground">关联目标</p>
                  <p className="font-medium">{kr.objective.title}</p>
                </div>
              )}
            </CardContent>
          </Card>

          {isOwner && isActive && (
            <Card>
              <CardHeader>
                <CardTitle className="text-lg">快捷操作</CardTitle>
              </CardHeader>
              <CardContent>
                <div className="flex items-center justify-between">
                  <div>
                    <p className="font-medium">请求老板帮助</p>
                    <p className="text-sm text-muted-foreground">遇到困难时发送求助</p>
                  </div>
                  <Switch checked={kr.need_owner_help} onCheckedChange={toggleNeedHelp} />
                </div>
              </CardContent>
            </Card>
          )}
        </div>
      </div>
      <TaskEditDialog 
        open={isTaskDialogOpen} 
        onOpenChange={setIsTaskDialogOpen}
        krId={krId}
        projectId={kr.project_id}
        projectTitle={kr.project?.name || ''}
        task={editingTask}
        onSuccess={fetchData}
      />
    </div>
  );
}