'use client'

import {
  Dialog,
  DialogTitle,
  DialogContent,
  DialogActions,
  Box,
  Typography,
  Button,
  LinearProgress,
  Chip
} from '@mui/material'
import {
  Favorite,
  AutoAwesome,
  Close as CloseIcon
} from '@mui/icons-material'
import { useTranslations, useLocale } from 'next-intl'
import Link from 'next/link'

interface UpgradeModalProps {
  open: boolean
  onClose: () => void
  limitData?: {
    limit: number
    remaining: number
    tier: string
    resetDate: string | null
  }
}

export default function UpgradeModal({ open, onClose, limitData }: UpgradeModalProps) {
  const locale = useLocale()
  const t = useTranslations('subscription.limitReached')

  const usagePercentage = limitData ? ((limitData.limit - limitData.remaining) / limitData.limit) * 100 : 100

  const formatResetDate = (dateString: string | null) => {
    if (!dateString) {
      // If no reset date set, calculate 1 month from now
      const nextMonth = new Date()
      nextMonth.setMonth(nextMonth.getMonth() + 1)
      return nextMonth.toLocaleDateString(locale, { year: 'numeric', month: 'long', day: 'numeric' })
    }
    const date = new Date(dateString)
    return date.toLocaleDateString(locale, { year: 'numeric', month: 'long', day: 'numeric' })
  }

  return (
    <Dialog
      open={open}
      onClose={onClose}
      maxWidth="sm"
      fullWidth
      PaperProps={{
        sx: {
          borderRadius: 3,
          p: 1
        }
      }}
    >
      <DialogTitle>
        <Box sx={{ display: 'flex', justifyContent: 'space-between', alignItems: 'center' }}>
          <Typography variant="h5" component="div" fontWeight="700">
            {t('title')}
          </Typography>
          <Button
            onClick={onClose}
            sx={{ minWidth: 'auto', p: 1 }}
            color="inherit"
          >
            <CloseIcon />
          </Button>
        </Box>
      </DialogTitle>

      <DialogContent>
        {/* Current Usage */}
        {limitData && (
          <Box sx={{ mb: 4 }}>
            <Box sx={{ display: 'flex', justifyContent: 'space-between', mb: 1 }}>
              <Typography variant="body2" color="text.secondary">
                {t('conversationsUsed')}
              </Typography>
              <Typography variant="body2" fontWeight="600">
                {limitData.limit - limitData.remaining} / {limitData.limit}
              </Typography>
            </Box>
            <LinearProgress
              variant="determinate"
              value={usagePercentage}
              sx={{
                height: 8,
                borderRadius: 1,
                bgcolor: 'grey.200',
                '& .MuiLinearProgress-bar': {
                  bgcolor: 'warning.main'
                }
              }}
            />
            <Typography variant="caption" color="text.secondary" sx={{ mt: 1, display: 'block' }}>
              {t('resetsOn', { date: formatResetDate(limitData.resetDate) })}
            </Typography>
          </Box>
        )}

        {/* Limit Reached Message */}
        <Box sx={{ mb: 4, textAlign: 'center' }}>
          <Typography variant="body1" sx={{ mb: 2 }}>
            {t('message')}
          </Typography>
          <Typography variant="body2" color="text.secondary">
            {t('upgradePrompt')}
          </Typography>
        </Box>

        {/* Premium Benefits */}
        <Box
          sx={{
            bgcolor: 'primary.light',
            borderRadius: 2,
            p: 3,
            mb: 3
          }}
        >
          <Box sx={{ display: 'flex', alignItems: 'center', mb: 2 }}>
            <AutoAwesome sx={{ color: 'primary.main', mr: 1 }} />
            <Typography variant="h6" fontWeight="600">
              {t('premiumTitle')}
            </Typography>
          </Box>
          <Box sx={{ display: 'flex', flexDirection: 'column', gap: 1.5 }}>
            <Box sx={{ display: 'flex', alignItems: 'center' }}>
              <Box
                sx={{
                  width: 6,
                  height: 6,
                  borderRadius: '50%',
                  bgcolor: 'primary.main',
                  mr: 1.5
                }}
              />
              <Typography variant="body2">
                {t('benefits.unlimited')}
              </Typography>
            </Box>
            <Box sx={{ display: 'flex', alignItems: 'center' }}>
              <Box
                sx={{
                  width: 6,
                  height: 6,
                  borderRadius: '50%',
                  bgcolor: 'primary.main',
                  mr: 1.5
                }}
              />
              <Typography variant="body2">
                {t('benefits.support')}
              </Typography>
            </Box>
            <Box sx={{ display: 'flex', alignItems: 'center' }}>
              <Box
                sx={{
                  width: 6,
                  height: 6,
                  borderRadius: '50%',
                  bgcolor: 'primary.main',
                  mr: 1.5
                }}
              />
              <Typography variant="body2">
                {t('benefits.early')}
              </Typography>
            </Box>
          </Box>
          <Box sx={{ mt: 2, display: 'flex', alignItems: 'center', gap: 1 }}>
            <Typography variant="h5" fontWeight="700" color="primary.main">
              $10
            </Typography>
            <Typography variant="body2" color="text.secondary">
              {t('pricing')}
            </Typography>
            <Chip
              label={t('savings')}
              size="small"
              color="success"
              sx={{ ml: 'auto' }}
            />
          </Box>
        </Box>
      </DialogContent>

      <DialogActions sx={{ p: 3, pt: 0, flexDirection: 'column', gap: 2 }}>
        <Button
          variant="contained"
          size="large"
          fullWidth
          startIcon={<Favorite />}
          component={Link}
          href={`/${locale}/subscription`}
          onClick={onClose}
          sx={{ py: 1.5 }}
        >
          {t('upgradeButton')}
        </Button>
        <Button
          variant="text"
          size="large"
          fullWidth
          onClick={onClose}
          sx={{ py: 1 }}
        >
          {t('maybeLater')}
        </Button>
      </DialogActions>
    </Dialog>
  )
}