import { useState } from 'react'
import { useNavigate } from 'react-router'
import {
  Alert,
  Box,
  Button,
  Chip,
  CircularProgress,
  Dialog,
  DialogActions,
  DialogContent,
  DialogTitle,
  IconButton,
  Switch,
  Tooltip,
  Typography,
} from '@mui/material'
import { Plus, Trash2 } from 'lucide-react'
import { useProperties, useUpdateProperty, useRemoveProperty } from '../../hooks/useProperties'
import type { Property } from '../../domain/property'

const ASSET_LABELS: Record<string, string> = {
  OFFICE: 'Büro',
  RETAIL: 'Einzelhandel',
  LIGHT_INDUSTRIAL: 'Gewerbe',
  LOGISTICS: 'Logistik',
  PRODUCTION: 'Produktion',
  MIXED: 'Gemischt',
}

function formatDate(iso?: string) {
  if (!iso) return '–'
  return new Date(iso).toLocaleDateString('de-CH', { day: '2-digit', month: '2-digit', year: 'numeric' })
}

export default function MyListings() {
  const navigate = useNavigate()

  const { data: listings = [], isLoading } = useProperties({ sourceType: 'DIRECT' })
  const updateProperty = useUpdateProperty()
  const removeProperty = useRemoveProperty()

  const [confirmDelete, setConfirmDelete] = useState<Property | null>(null)
  const [actionError, setActionError] = useState<string | null>(null)

  function handleToggleStatus(p: Property) {
    const next = p.status === 'ACTIVE' ? 'INACTIVE' : 'ACTIVE'
    updateProperty.mutate(
      { id: p.id, input: { status: next } },
      {
        onError: () => {
          setActionError('Status konnte nicht geändert werden.')
        },
      },
    )
  }

  function handleDelete(p: Property) {
    removeProperty.mutate(p.id, {
      onSuccess: () => {
        setConfirmDelete(null)
      },
      onError: () => {
        setActionError('Inserat konnte nicht gelöscht werden.')
        setConfirmDelete(null)
      },
    })
  }

  return (
    <Box sx={{ maxWidth: 960, mx: 'auto', px: 3, py: 4 }}>
      <Box sx={{ display: 'flex', alignItems: 'center', justifyContent: 'space-between', mb: 3 }}>
        <Box>
          <Typography variant="h5" sx={{ fontWeight: 700 }}>Meine Inserate</Typography>
          <Typography variant="body2" color="text.secondary">
            Direkt erstellte Inserate — unabhängig vom Portfolio
          </Typography>
        </Box>
        <Button
          variant="contained"
          startIcon={<Plus size={16} />}
          onClick={() => navigate('/supply/new-listing')}
          sx={{ bgcolor: '#1e3a5f', '&:hover': { bgcolor: '#162d4a' }, textTransform: 'none' }}
        >
          Neues Inserat
        </Button>
      </Box>

      {actionError && (
        <Alert severity="error" sx={{ mb: 2 }} onClose={() => setActionError(null)}>
          {actionError}
        </Alert>
      )}

      {isLoading ? (
        <Box sx={{ display: 'flex', justifyContent: 'center', py: 8 }}>
          <CircularProgress />
        </Box>
      ) : listings.length === 0 ? (
        <Box sx={{ textAlign: 'center', py: 10, color: 'text.secondary' }}>
          <Typography variant="h6" sx={{ mb: 1, fontWeight: 500 }}>Noch keine Inserate</Typography>
          <Typography variant="body2" sx={{ mb: 3 }}>
            Erstellen Sie Ihr erstes direktes Inserat — ohne vollständiges Objekt im Portfolio.
          </Typography>
          <Button
            variant="outlined"
            startIcon={<Plus size={15} />}
            onClick={() => navigate('/supply/new-listing')}
            sx={{ textTransform: 'none' }}
          >
            Erstes Inserat erstellen
          </Button>
        </Box>
      ) : (
        <Box sx={{ border: '1px solid #e2e8f0', borderRadius: 1.5, overflow: 'hidden' }}>
          {/* Header */}
          <Box sx={{
            display: 'grid',
            gridTemplateColumns: '2fr 1fr 80px 100px 120px 80px 48px',
            px: 2, py: 1,
            bgcolor: '#f8fafc',
            borderBottom: '1px solid #e2e8f0',
          }}>
            {['Inserat', 'Ort', 'Fläche', 'Preis/m²/J', 'Erstellt', 'Aktiv', ''].map(h => (
              <Typography key={h} variant="caption" sx={{ fontWeight: 600, color: '#64748b', fontSize: '0.65rem', textTransform: 'uppercase' }}>
                {h}
              </Typography>
            ))}
          </Box>

          {listings.map((p, i) => {
            const isLast = i === listings.length - 1
            return (
              <Box
                key={p.id}
                sx={{
                  display: 'grid',
                  gridTemplateColumns: '2fr 1fr 80px 100px 120px 80px 48px',
                  px: 2, py: 1.25,
                  alignItems: 'center',
                  borderBottom: isLast ? 'none' : '1px solid #f1f5f9',
                  '&:hover': { bgcolor: '#f8fafc' },
                  transition: 'background 0.1s',
                }}
              >
                {/* Title + type */}
                <Box>
                  <Typography variant="body2" sx={{ fontWeight: 500, color: '#0f172a', lineHeight: 1.3 }}>
                    {p.title}
                  </Typography>
                  <Chip
                    label={ASSET_LABELS[p.assetType] ?? p.assetType}
                    size="small"
                    sx={{ height: 16, fontSize: '0.6rem', mt: 0.25, bgcolor: '#f1f5f9', color: '#475569' }}
                  />
                </Box>

                {/* City */}
                <Typography variant="body2" sx={{ color: '#374151' }}>
                  {p.location.city}
                </Typography>

                {/* Area */}
                <Typography variant="body2" sx={{ color: '#374151' }}>
                  {p.areaSqm.toLocaleString('de-CH')} m²
                </Typography>

                {/* Rent */}
                <Typography variant="body2" sx={{ color: '#374151' }}>
                  CHF {p.rentPricePerSqm.toLocaleString('de-CH')}
                </Typography>

                {/* Created */}
                <Typography variant="caption" sx={{ color: '#64748b' }}>
                  {formatDate(p.createdAt)}
                </Typography>

                {/* Status toggle */}
                <Box>
                  <Tooltip title={p.status === 'ACTIVE' ? 'Deaktivieren' : 'Aktivieren'}>
                    <Switch
                      size="small"
                      checked={p.status === 'ACTIVE'}
                      onChange={() => handleToggleStatus(p)}
                      disabled={updateProperty.isPending}
                      sx={{ '& .MuiSwitch-thumb': { width: 14, height: 14 } }}
                    />
                  </Tooltip>
                </Box>

                {/* Delete */}
                <Box>
                  <Tooltip title="Inserat löschen">
                    <IconButton
                      size="small"
                      onClick={() => setConfirmDelete(p)}
                      disabled={removeProperty.isPending}
                      sx={{ color: '#94a3b8', '&:hover': { color: '#ef4444' } }}
                    >
                      <Trash2 size={15} />
                    </IconButton>
                  </Tooltip>
                </Box>
              </Box>
            )
          })}
        </Box>
      )}

      {/* Delete confirmation dialog */}
      <Dialog open={!!confirmDelete} onClose={() => setConfirmDelete(null)} maxWidth="xs" fullWidth>
        <DialogTitle>Inserat löschen?</DialogTitle>
        <DialogContent>
          <Typography variant="body2">
            <strong>{confirmDelete?.title}</strong> wird unwiderruflich gelöscht.
          </Typography>
        </DialogContent>
        <DialogActions>
          <Button onClick={() => setConfirmDelete(null)} sx={{ textTransform: 'none' }}>
            Abbrechen
          </Button>
          <Button
            color="error"
            variant="contained"
            onClick={() => confirmDelete && handleDelete(confirmDelete)}
            sx={{ textTransform: 'none' }}
          >
            Löschen
          </Button>
        </DialogActions>
      </Dialog>
    </Box>
  )
}