import React from 'react';
import { useNavigate } from 'react-router-dom';
import { Card } from '@tamagui/card';
import { YGroup } from '@tamagui/group';
import { ListItem } from '@tamagui/list-item';
import { YStack, XStack } from '@tamagui/stacks';
import { SizableText as Text } from '@tamagui/text';
import { Pressable } from '@tamagui/react-native-web-lite';
import { CheckCircle2, Circle, ChevronDown, ChevronUp } from 'lucide-react';
import { Separator } from 'tamagui';
import { useAdminTheme } from '../theme';
import { ReadinessStep } from '../hooks/useEventReadiness';
import { adminPath } from '../../constants';
import { PillBadge } from './Primitives';

export function SetupChecklist({
  steps,
  title,
  variant = 'card',
}: {
  steps: ReadinessStep[];
  title: string;
  variant?: 'card' | 'embedded';
}) {
  const theme = useAdminTheme();
  const navigate = useNavigate();
  const isAllComplete = steps.every(s => s.isComplete);
  const [collapsed, setCollapsed] = React.useState(isAllComplete);
  const isEmbedded = variant === 'embedded';

  const completedCount = steps.filter(s => s.isComplete).length;

  return (
    <Card
      backgroundColor={theme.surface}
      borderRadius={isEmbedded ? 16 : 20}
      borderWidth={1}
      borderColor={theme.border}
      padding="$0"
      overflow="hidden"
      shadowColor={theme.shadow}
      shadowOpacity={isEmbedded ? 0 : 0.16}
      shadowRadius={isEmbedded ? 0 : 16}
      shadowOffset={isEmbedded ? { width: 0, height: 0 } : { width: 0, height: 10 }}
    >
      <Pressable onPress={() => setCollapsed(!collapsed)}>
        <XStack padding="$3" paddingVertical="$2.5" alignItems="center" justifyContent="space-between">
           <XStack alignItems="center" space="$2">
             <Text fontSize="$xs" fontWeight="700" color={theme.muted} textTransform="uppercase" letterSpacing={1}>
                {title}
             </Text>
             {isAllComplete && (
               <CheckCircle2 size={14} color={theme.successText} />
             )}
           </XStack>
           
           <XStack alignItems="center" space="$2">
             <Text fontSize="$xs" color={theme.muted} fontWeight="600">
               {completedCount}/{steps.length}
             </Text>
             {collapsed ? <ChevronDown size={16} color={theme.muted} /> : <ChevronUp size={16} color={theme.muted} />}
           </XStack>
        </XStack>
      </Pressable>

      {!collapsed && (
        <YStack>
          <Separator backgroundColor={theme.border} opacity={0.6} />
          <YGroup {...({ borderRadius: "$4", borderWidth: 1, borderColor: theme.border, overflow: "hidden" } as any)}>
            {steps.map((step, index) => {
              const isNext = !step.isComplete && steps.slice(0, index).every(s => s.isComplete);

              return (
                <YGroup.Item key={step.id}>
                  <ListItem
                    hoverTheme
                    pressTheme
                    paddingVertical="$2"
                    paddingHorizontal="$3"
                    backgroundColor={isNext ? theme.surfaceMuted : 'transparent'}
                    onPress={() => navigate(adminPath(step.targetPath))}
                    title={
                      <XStack alignItems="center" space="$2.5">
                        {step.isComplete ? (
                          <CheckCircle2 size={18} color={theme.successText} />
                        ) : isNext ? (
                          <Circle size={18} color={theme.primary} strokeWidth={2.5} />
                        ) : (
                          <Circle size={18} color={theme.border} />
                        )}
                        <Text
                          fontSize="$sm"
                          fontWeight={isNext ? '700' : '500'}
                          color={step.isComplete ? theme.muted : theme.textStrong}
                          textDecorationLine={step.isComplete ? 'line-through' : 'none'}
                        >
                          {step.label}
                        </Text>
                      </XStack>
                    }
                    subTitle={
                      step.description && !step.isComplete ? (
                        <Text fontSize="$xs" color={theme.muted}>
                          {step.description}
                        </Text>
                      ) : undefined
                    }
                    iconAfter={isNext ? <PillBadge tone="success">Start</PillBadge> : undefined}
                  />
                </YGroup.Item>
              );
            })}
          </YGroup>
        </YStack>
      )}
    </Card>
  );
}