'use client'

import { useState, useEffect, useCallback } from 'react'
import Link from 'next/link'
import { useSearchParams, usePathname } from 'next/navigation'
import { trpc } from '@/lib/trpc/client'
import { toast } from 'sonner'
import {
  Card,
  CardContent,
  CardDescription,
  CardHeader,
  CardTitle,
} from '@/components/ui/card'
import { Badge } from '@/components/ui/badge'
import { Button } from '@/components/ui/button'
import { Input } from '@/components/ui/input'
import { Skeleton } from '@/components/ui/skeleton'
import { Progress } from '@/components/ui/progress'
import {
  Table,
  TableBody,
  TableCell,
  TableHead,
  TableHeader,
  TableRow,
} from '@/components/ui/table'
import {
  DropdownMenu,
  DropdownMenuContent,
  DropdownMenuItem,
  DropdownMenuSeparator,
  DropdownMenuTrigger,
} from '@/components/ui/dropdown-menu'
import {
  AlertDialog,
  AlertDialogAction,
  AlertDialogCancel,
  AlertDialogContent,
  AlertDialogDescription,
  AlertDialogFooter,
  AlertDialogHeader,
  AlertDialogTitle,
} from '@/components/ui/alert-dialog'
import {
  Dialog,
  DialogContent,
  DialogDescription,
  DialogHeader,
  DialogTitle,
} from '@/components/ui/dialog'
import {
  Plus,
  MoreHorizontal,
  ClipboardList,
  Eye,
  Pencil,
  FileUp,
  Users,
  Search,
  Trash2,
  Loader2,
  Sparkles,
  Tags,
  Clock,
  CheckCircle2,
  AlertCircle,
  Layers,
  FolderOpen,
  X,
  AlertTriangle,
} from 'lucide-react'
import {
  Select,
  SelectContent,
  SelectItem,
  SelectTrigger,
  SelectValue,
} from '@/components/ui/select'
import { Checkbox } from '@/components/ui/checkbox'
import { Label } from '@/components/ui/label'
import { truncate } from '@/lib/utils'
import { ProjectLogo } from '@/components/shared/project-logo'
import { Pagination } from '@/components/shared/pagination'
import {
  ProjectFiltersBar,
  type ProjectFilters,
} from './project-filters'

const statusColors: Record<
  string,
  'default' | 'success' | 'secondary' | 'destructive' | 'warning'
> = {
  SUBMITTED: 'secondary',
  ELIGIBLE: 'default',
  ASSIGNED: 'default',
  SEMIFINALIST: 'success',
  FINALIST: 'success',
  WINNER: 'success',
  REJECTED: 'destructive',
  WITHDRAWN: 'secondary',
}

function parseFiltersFromParams(
  searchParams: URLSearchParams
): ProjectFilters & { page: number } {
  return {
    search: searchParams.get('q') || '',
    statuses: searchParams.get('status')
      ? searchParams.get('status')!.split(',')
      : [],
    roundId: searchParams.get('round') || '',
    competitionCategory: searchParams.get('category') || '',
    oceanIssue: searchParams.get('issue') || '',
    country: searchParams.get('country') || '',
    wantsMentorship:
      searchParams.get('mentorship') === 'true'
        ? true
        : searchParams.get('mentorship') === 'false'
          ? false
          : undefined,
    hasFiles:
      searchParams.get('hasFiles') === 'true'
        ? true
        : searchParams.get('hasFiles') === 'false'
          ? false
          : undefined,
    hasAssignments:
      searchParams.get('hasAssign') === 'true'
        ? true
        : searchParams.get('hasAssign') === 'false'
          ? false
          : undefined,
    page: parseInt(searchParams.get('page') || '1', 10),
  }
}

function filtersToParams(
  filters: ProjectFilters & { page: number }
): URLSearchParams {
  const params = new URLSearchParams()
  if (filters.search) params.set('q', filters.search)
  if (filters.statuses.length > 0)
    params.set('status', filters.statuses.join(','))
  if (filters.roundId) params.set('round', filters.roundId)
  if (filters.competitionCategory)
    params.set('category', filters.competitionCategory)
  if (filters.oceanIssue) params.set('issue', filters.oceanIssue)
  if (filters.country) params.set('country', filters.country)
  if (filters.wantsMentorship !== undefined)
    params.set('mentorship', String(filters.wantsMentorship))
  if (filters.hasFiles !== undefined)
    params.set('hasFiles', String(filters.hasFiles))
  if (filters.hasAssignments !== undefined)
    params.set('hasAssign', String(filters.hasAssignments))
  if (filters.page > 1) params.set('page', String(filters.page))
  return params
}

const PER_PAGE = 20

export default function ProjectsPage() {

  const pathname = usePathname()
  const searchParams = useSearchParams()

  const parsed = parseFiltersFromParams(searchParams)
  const [filters, setFilters] = useState<ProjectFilters>({
    search: parsed.search,
    statuses: parsed.statuses,
    roundId: parsed.roundId,
    competitionCategory: parsed.competitionCategory,
    oceanIssue: parsed.oceanIssue,
    country: parsed.country,
    wantsMentorship: parsed.wantsMentorship,
    hasFiles: parsed.hasFiles,
    hasAssignments: parsed.hasAssignments,
  })
  const [page, setPage] = useState(parsed.page)
  const [searchInput, setSearchInput] = useState(parsed.search)

  // Debounced search
  useEffect(() => {
    const timer = setTimeout(() => {
      if (searchInput !== filters.search) {
        setFilters((f) => ({ ...f, search: searchInput }))
        setPage(1)
      }
    }, 300)
    return () => clearTimeout(timer)
  }, [searchInput, filters.search])

  // Sync URL
  const syncUrl = useCallback(
    (f: ProjectFilters, p: number) => {
      const params = filtersToParams({ ...f, page: p })
      const qs = params.toString()
      window.history.replaceState(null, '', qs ? `${pathname}?${qs}` : pathname)
    },
    [pathname]
  )

  useEffect(() => {
    syncUrl(filters, page)
  }, [filters, page, syncUrl])

  // Reset page when filters change
  const handleFiltersChange = (newFilters: ProjectFilters) => {
    setFilters(newFilters)
    setPage(1)
  }

  // Build tRPC query input
  const queryInput = {
    search: filters.search || undefined,
    statuses:
      filters.statuses.length > 0
        ? (filters.statuses as Array<
            | 'SUBMITTED'
            | 'ELIGIBLE'
            | 'ASSIGNED'
            | 'SEMIFINALIST'
            | 'FINALIST'
            | 'REJECTED'
          >)
        : undefined,
    roundId: filters.roundId || undefined,
    competitionCategory:
      (filters.competitionCategory as 'STARTUP' | 'BUSINESS_CONCEPT') ||
      undefined,
    oceanIssue: filters.oceanIssue
      ? (filters.oceanIssue as
          | 'POLLUTION_REDUCTION'
          | 'CLIMATE_MITIGATION'
          | 'TECHNOLOGY_INNOVATION'
          | 'SUSTAINABLE_SHIPPING'
          | 'BLUE_CARBON'
          | 'HABITAT_RESTORATION'
          | 'COMMUNITY_CAPACITY'
          | 'SUSTAINABLE_FISHING'
          | 'CONSUMER_AWARENESS'
          | 'OCEAN_ACIDIFICATION'
          | 'OTHER')
      : undefined,
    country: filters.country || undefined,
    wantsMentorship: filters.wantsMentorship,
    hasFiles: filters.hasFiles,
    hasAssignments: filters.hasAssignments,
    page,
    perPage: PER_PAGE,
  }

  const utils = trpc.useUtils()
  const { data, isLoading } = trpc.project.list.useQuery(queryInput)
  const { data: filterOptions } = trpc.project.getFilterOptions.useQuery()

  const [deleteDialogOpen, setDeleteDialogOpen] = useState(false)
  const [projectToDelete, setProjectToDelete] = useState<{ id: string; title: string } | null>(null)
  const [aiTagDialogOpen, setAiTagDialogOpen] = useState(false)
  const [taggingScope, setTaggingScope] = useState<'round' | 'program'>('round')
  const [selectedRoundForTagging, setSelectedRoundForTagging] = useState<string>('')
  const [selectedProgramForTagging, setSelectedProgramForTagging] = useState<string>('')
  const [activeTaggingJobId, setActiveTaggingJobId] = useState<string | null>(null)

  // Fetch programs and rounds for the AI tagging dialog
  const { data: programs } = trpc.program.list.useQuery()

  // Start tagging job mutation
  const startTaggingJob = trpc.tag.startTaggingJob.useMutation({
    onSuccess: (result) => {
      setActiveTaggingJobId(result.jobId)
      toast.info('AI tagging job started. Progress will update automatically.')
    },
    onError: (error) => {
      toast.error(error.message || 'Failed to start tagging job')
    },
  })

  // Poll for job status when job is active
  const { data: jobStatus } = trpc.tag.getTaggingJobStatus.useQuery(
    { jobId: activeTaggingJobId! },
    {
      enabled: !!activeTaggingJobId,
      refetchInterval: (query) => {
        const status = query.state.data?.status
        // Stop polling when job is done
        if (status === 'COMPLETED' || status === 'FAILED') {
          return false
        }
        return 1500 // Poll every 1.5 seconds
      },
    }
  )

  // Handle job completion
  useEffect(() => {
    if (jobStatus?.status === 'COMPLETED') {
      toast.success(
        `AI Tagging complete: ${jobStatus.taggedCount} tagged, ${jobStatus.skippedCount} already tagged, ${jobStatus.failedCount} failed`
      )
      utils.project.list.invalidate()
    } else if (jobStatus?.status === 'FAILED') {
      toast.error(`AI Tagging failed: ${jobStatus.errorMessage || 'Unknown error'}`)
    }
  }, [jobStatus?.status, jobStatus?.taggedCount, jobStatus?.skippedCount, jobStatus?.failedCount, jobStatus?.errorMessage, utils.project.list])

  const taggingInProgress = startTaggingJob.isPending ||
    (jobStatus?.status === 'PENDING' || jobStatus?.status === 'RUNNING')

  const taggingResult = jobStatus?.status === 'COMPLETED' || jobStatus?.status === 'FAILED'
    ? {
        processed: jobStatus.taggedCount,
        skipped: jobStatus.skippedCount,
        failed: jobStatus.failedCount,
        errors: jobStatus.errors || [],
        status: jobStatus.status,
      }
    : null

  const handleStartTagging = () => {
    if (taggingScope === 'round' && selectedRoundForTagging) {
      startTaggingJob.mutate({ roundId: selectedRoundForTagging })
    } else if (taggingScope === 'program' && selectedProgramForTagging) {
      startTaggingJob.mutate({ programId: selectedProgramForTagging })
    }
  }

  const handleCloseTaggingDialog = () => {
    if (!taggingInProgress) {
      setAiTagDialogOpen(false)
      setActiveTaggingJobId(null)
      setSelectedRoundForTagging('')
      setSelectedProgramForTagging('')
    }
  }

  // Get selected program's rounds
  const selectedProgram = programs?.find(p => p.id === selectedProgramForTagging)
  const programRounds = filterOptions?.rounds?.filter(r => r.program?.id === selectedProgramForTagging) ?? []

  // Calculate stats for display
  const selectedRound = filterOptions?.rounds?.find(r => r.id === selectedRoundForTagging)
  const displayProgram = taggingScope === 'program'
    ? selectedProgram
    : (selectedRound ? programs?.find(p => p.id === selectedRound.program?.id) : null)

  // Calculate progress percentage
  const taggingProgressPercent = jobStatus && jobStatus.totalProjects > 0
    ? Math.round((jobStatus.processedCount / jobStatus.totalProjects) * 100)
    : 0

  // Bulk selection state
  const [selectedIds, setSelectedIds] = useState<Set<string>>(new Set())
  const [bulkStatus, setBulkStatus] = useState<string>('')
  const [bulkConfirmOpen, setBulkConfirmOpen] = useState(false)

  const bulkUpdateStatus = trpc.project.bulkUpdateStatus.useMutation({
    onSuccess: (result) => {
      toast.success(`${result.updated} project${result.updated !== 1 ? 's' : ''} updated successfully`)
      setSelectedIds(new Set())
      setBulkStatus('')
      setBulkConfirmOpen(false)
      utils.project.list.invalidate()
    },
    onError: (error) => {
      toast.error(error.message || 'Failed to update projects')
    },
  })

  const handleToggleSelect = (id: string) => {
    setSelectedIds((prev) => {
      const next = new Set(prev)
      if (next.has(id)) {
        next.delete(id)
      } else {
        next.add(id)
      }
      return next
    })
  }

  const handleSelectAll = () => {
    if (!data) return
    const allVisible = data.projects.map((p) => p.id)
    const allSelected = allVisible.every((id) => selectedIds.has(id))
    if (allSelected) {
      setSelectedIds((prev) => {
        const next = new Set(prev)
        allVisible.forEach((id) => next.delete(id))
        return next
      })
    } else {
      setSelectedIds((prev) => {
        const next = new Set(prev)
        allVisible.forEach((id) => next.add(id))
        return next
      })
    }
  }

  const handleBulkApply = () => {
    if (!bulkStatus || selectedIds.size === 0) return
    setBulkConfirmOpen(true)
  }

  const handleBulkConfirm = () => {
    if (!bulkStatus || selectedIds.size === 0 || !filters.roundId) return
    bulkUpdateStatus.mutate({
      ids: Array.from(selectedIds),
      roundId: filters.roundId,
      status: bulkStatus as 'SUBMITTED' | 'ELIGIBLE' | 'ASSIGNED' | 'SEMIFINALIST' | 'FINALIST' | 'REJECTED',
    })
  }

  // Determine if all visible projects are selected
  const allVisibleSelected = data
    ? data.projects.length > 0 && data.projects.every((p) => selectedIds.has(p.id))
    : false
  const someVisibleSelected = data
    ? data.projects.some((p) => selectedIds.has(p.id)) && !allVisibleSelected
    : false

  const deleteProject = trpc.project.delete.useMutation({
    onSuccess: () => {
      toast.success('Project deleted successfully')
      utils.project.list.invalidate()
      setDeleteDialogOpen(false)
      setProjectToDelete(null)
    },
    onError: (error) => {
      toast.error(error.message || 'Failed to delete project')
    },
  })

  const handleDeleteClick = (project: { id: string; title: string }) => {
    setProjectToDelete(project)
    setDeleteDialogOpen(true)
  }

  return (
    <div className="space-y-6">
      {/* Header */}
      <div className="flex items-center justify-between">
        <div>
          <h1 className="text-2xl font-semibold tracking-tight">Projects</h1>
          <p className="text-muted-foreground">
            Manage submitted projects across all rounds
          </p>
        </div>
        <div className="flex gap-2">
          <Button variant="outline" onClick={() => setAiTagDialogOpen(true)}>
            <Sparkles className="mr-2 h-4 w-4" />
            AI Tags
          </Button>
          <Button variant="outline" asChild>
            <Link href="/admin/projects/import">
              <FileUp className="mr-2 h-4 w-4" />
              Import
            </Link>
          </Button>
          <Button asChild>
            <Link href="/admin/projects/new">
              <Plus className="mr-2 h-4 w-4" />
              Add Project
            </Link>
          </Button>
        </div>
      </div>

      {/* Search */}
      <div className="relative">
        <Search className="absolute left-3 top-1/2 h-4 w-4 -translate-y-1/2 text-muted-foreground" />
        <Input
          value={searchInput}
          onChange={(e) => setSearchInput(e.target.value)}
          placeholder="Search projects by title, team, or description..."
          className="pl-10"
        />
      </div>

      {/* Filters */}
      <ProjectFiltersBar
        filters={filters}
        filterOptions={filterOptions}
        onChange={handleFiltersChange}
      />

      {/* Content */}
      {isLoading ? (
        <Card>
          <CardContent className="p-6">
            <div className="space-y-4">
              {[...Array(5)].map((_, i) => (
                <div key={i} className="flex items-center justify-between">
                  <div className="space-y-2">
                    <Skeleton className="h-5 w-64" />
                    <Skeleton className="h-4 w-32" />
                  </div>
                  <Skeleton className="h-9 w-9" />
                </div>
              ))}
            </div>
          </CardContent>
        </Card>
      ) : data && data.projects.length === 0 ? (
        <Card>
          <CardContent className="flex flex-col items-center justify-center py-12 text-center">
            <ClipboardList className="h-12 w-12 text-muted-foreground/50" />
            <p className="mt-2 font-medium">No projects found</p>
            <p className="text-sm text-muted-foreground">
              {filters.search ||
              filters.statuses.length > 0 ||
              filters.roundId ||
              filters.competitionCategory ||
              filters.oceanIssue ||
              filters.country
                ? 'Try adjusting your filters'
                : 'Import projects via CSV or create them manually'}
            </p>
            {!filters.search && filters.statuses.length === 0 && (
              <div className="mt-4 flex gap-2">
                <Button asChild>
                  <Link href="/admin/projects/import">
                    <FileUp className="mr-2 h-4 w-4" />
                    Import CSV
                  </Link>
                </Button>
                <Button variant="outline" asChild>
                  <Link href="/admin/projects/new">
                    <Plus className="mr-2 h-4 w-4" />
                    Add Project
                  </Link>
                </Button>
              </div>
            )}
          </CardContent>
        </Card>
      ) : data ? (
        <>
          {/* Desktop table */}
          <Card className="hidden md:block">
            <Table>
              <TableHeader>
                <TableRow>
                  {filters.roundId && (
                    <TableHead className="w-10">
                      <Checkbox
                        checked={allVisibleSelected ? true : someVisibleSelected ? 'indeterminate' : false}
                        onCheckedChange={handleSelectAll}
                        aria-label="Select all projects"
                      />
                    </TableHead>
                  )}
                  <TableHead>Project</TableHead>
                  <TableHead>Round</TableHead>
                  <TableHead>Files</TableHead>
                  <TableHead>Assignments</TableHead>
                  <TableHead>Status</TableHead>
                  <TableHead className="text-right">Actions</TableHead>
                </TableRow>
              </TableHeader>
              <TableBody>
                {data.projects.map((project) => {
                  const isEliminated = project.status === 'REJECTED'
                  return (
                  <TableRow
                    key={project.id}
                    className={`group relative cursor-pointer hover:bg-muted/50 ${isEliminated ? 'opacity-60 bg-destructive/5' : ''}`}
                  >
                    {filters.roundId && (
                      <TableCell className="relative z-10">
                        <Checkbox
                          checked={selectedIds.has(project.id)}
                          onCheckedChange={() => handleToggleSelect(project.id)}
                          aria-label={`Select ${project.title}`}
                          onClick={(e) => e.stopPropagation()}
                        />
                      </TableCell>
                    )}
                    <TableCell>
                      <Link
                        href={`/admin/projects/${project.id}`}
                        className="flex items-center gap-3 after:absolute after:inset-0 after:content-['']"
                      >
                        <ProjectLogo
                          project={project}
                          size="sm"
                          fallback="initials"
                        />
                        <div>
                          <p className="font-medium hover:text-primary">
                            {truncate(project.title, 40)}
                          </p>
                          <p className="text-sm text-muted-foreground">
                            {project.teamName}
                          </p>
                        </div>
                      </Link>
                    </TableCell>
                    <TableCell>
                      <div>
                        <div className="flex items-center gap-2">
                          <p>{project.round?.name ?? '-'}</p>
                          {project.status === 'REJECTED' && (
                            <Badge variant="destructive" className="text-xs">
                              Eliminated
                            </Badge>
                          )}
                        </div>
                        <p className="text-sm text-muted-foreground">
                          {project.round?.program?.name}
                        </p>
                      </div>
                    </TableCell>
                    <TableCell>{project._count?.files ?? 0}</TableCell>
                    <TableCell>
                      <div className="flex items-center gap-1">
                        <Users className="h-4 w-4 text-muted-foreground" />
                        {project._count.assignments}
                      </div>
                    </TableCell>
                    <TableCell>
                      <Badge
                        variant={statusColors[project.status ?? 'SUBMITTED'] || 'secondary'}
                      >
                        {(project.status ?? 'SUBMITTED').replace('_', ' ')}
                      </Badge>
                    </TableCell>
                    <TableCell className="relative z-10 text-right">
                      <DropdownMenu>
                        <DropdownMenuTrigger asChild>
                          <Button variant="ghost" size="icon">
                            <MoreHorizontal className="h-4 w-4" />
                            <span className="sr-only">Actions</span>
                          </Button>
                        </DropdownMenuTrigger>
                        <DropdownMenuContent align="end">
                          <DropdownMenuItem asChild>
                            <Link href={`/admin/projects/${project.id}`}>
                              <Eye className="mr-2 h-4 w-4" />
                              View Details
                            </Link>
                          </DropdownMenuItem>
                          <DropdownMenuItem asChild>
                            <Link href={`/admin/projects/${project.id}/edit`}>
                              <Pencil className="mr-2 h-4 w-4" />
                              Edit
                            </Link>
                          </DropdownMenuItem>
                          <DropdownMenuSeparator />
                          <DropdownMenuItem
                            className="text-destructive focus:text-destructive"
                            onClick={(e) => {
                              e.stopPropagation()
                              handleDeleteClick({ id: project.id, title: project.title })
                            }}
                          >
                            <Trash2 className="mr-2 h-4 w-4" />
                            Delete
                          </DropdownMenuItem>
                        </DropdownMenuContent>
                      </DropdownMenu>
                    </TableCell>
                  </TableRow>
                )})}
              </TableBody>
            </Table>
          </Card>

          {/* Mobile card view */}
          <div className="space-y-4 md:hidden">
            {data.projects.map((project) => (
              <div key={project.id} className="relative">
                {filters.roundId && (
                  <div className="absolute left-3 top-4 z-10">
                    <Checkbox
                      checked={selectedIds.has(project.id)}
                      onCheckedChange={() => handleToggleSelect(project.id)}
                      aria-label={`Select ${project.title}`}
                    />
                  </div>
                )}
              <Link
                href={`/admin/projects/${project.id}`}
                className="block"
              >
                <Card className="transition-colors hover:bg-muted/50">
                  <CardHeader className="pb-3">
                    <div className={`flex items-start gap-3 ${filters.roundId ? 'pl-8' : ''}`}>
                      <ProjectLogo
                        project={project}
                        size="md"
                        fallback="initials"
                      />
                      <div className="flex-1 min-w-0">
                        <div className="flex items-start justify-between gap-2">
                          <CardTitle className="text-base line-clamp-2">
                            {project.title}
                          </CardTitle>
                          <Badge
                            variant={
                              statusColors[project.status ?? 'SUBMITTED'] || 'secondary'
                            }
                            className="shrink-0"
                          >
                            {(project.status ?? 'SUBMITTED').replace('_', ' ')}
                          </Badge>
                        </div>
                        <CardDescription>{project.teamName}</CardDescription>
                      </div>
                    </div>
                  </CardHeader>
                  <CardContent className="space-y-3">
                    <div className="flex items-center justify-between text-sm">
                      <span className="text-muted-foreground">Round</span>
                      <div className="flex items-center gap-2">
                        <span>{project.round?.name ?? '-'}</span>
                        {project.status === 'REJECTED' && (
                          <Badge variant="destructive" className="text-xs">
                            Eliminated
                          </Badge>
                        )}
                      </div>
                    </div>
                    <div className="flex items-center justify-between text-sm">
                      <span className="text-muted-foreground">Assignments</span>
                      <span>{project._count.assignments} jurors</span>
                    </div>
                  </CardContent>
                </Card>
              </Link>
              </div>
            ))}
          </div>

          {/* Pagination */}
          <Pagination
            page={data.page}
            totalPages={data.totalPages}
            total={data.total}
            perPage={PER_PAGE}
            onPageChange={setPage}
          />
        </>
      ) : null}

      {/* Bulk Action Floating Toolbar */}
      {selectedIds.size > 0 && filters.roundId && (
        <div className="fixed bottom-6 left-1/2 z-50 -translate-x-1/2">
          <Card className="border-2 shadow-lg">
            <CardContent className="flex flex-col gap-3 p-4 sm:flex-row sm:items-center">
              <Badge variant="secondary" className="shrink-0 text-sm">
                {selectedIds.size} selected
              </Badge>
              <Select value={bulkStatus} onValueChange={setBulkStatus}>
                <SelectTrigger className="w-full sm:w-[180px]">
                  <SelectValue placeholder="Set status..." />
                </SelectTrigger>
                <SelectContent>
                  {['SUBMITTED', 'ELIGIBLE', 'ASSIGNED', 'SEMIFINALIST', 'FINALIST', 'REJECTED'].map((s) => (
                    <SelectItem key={s} value={s}>
                      {s.replace('_', ' ')}
                    </SelectItem>
                  ))}
                </SelectContent>
              </Select>
              <div className="flex gap-2">
                <Button
                  size="sm"
                  onClick={handleBulkApply}
                  disabled={!bulkStatus || bulkUpdateStatus.isPending}
                >
                  {bulkUpdateStatus.isPending && (
                    <Loader2 className="mr-2 h-4 w-4 animate-spin" />
                  )}
                  Apply
                </Button>
                <Button
                  size="sm"
                  variant="ghost"
                  onClick={() => {
                    setSelectedIds(new Set())
                    setBulkStatus('')
                  }}
                >
                  <X className="mr-1 h-4 w-4" />
                  Clear
                </Button>
              </div>
            </CardContent>
          </Card>
        </div>
      )}

      {/* Bulk Status Update Confirmation Dialog */}
      <AlertDialog open={bulkConfirmOpen} onOpenChange={setBulkConfirmOpen}>
        <AlertDialogContent>
          <AlertDialogHeader>
            <AlertDialogTitle>Update Project Status</AlertDialogTitle>
            <AlertDialogDescription asChild>
              <div className="space-y-2">
                <p>
                  You are about to change the status of{' '}
                  <strong>{selectedIds.size} project{selectedIds.size !== 1 ? 's' : ''}</strong>{' '}
                  to <Badge variant={statusColors[bulkStatus] || 'secondary'}>{bulkStatus.replace('_', ' ')}</Badge>.
                </p>
                {bulkStatus === 'REJECTED' && (
                  <div className="flex items-start gap-2 rounded-md bg-destructive/10 p-3 text-destructive">
                    <AlertTriangle className="mt-0.5 h-4 w-4 shrink-0" />
                    <p className="text-sm">
                      Warning: Rejected projects will be marked as eliminated. This will send notifications to the project teams.
                    </p>
                  </div>
                )}
              </div>
            </AlertDialogDescription>
          </AlertDialogHeader>
          <AlertDialogFooter>
            <AlertDialogCancel disabled={bulkUpdateStatus.isPending}>Cancel</AlertDialogCancel>
            <AlertDialogAction
              onClick={handleBulkConfirm}
              className={bulkStatus === 'REJECTED' ? 'bg-destructive text-destructive-foreground hover:bg-destructive/90' : ''}
              disabled={bulkUpdateStatus.isPending}
            >
              {bulkUpdateStatus.isPending ? (
                <Loader2 className="mr-2 h-4 w-4 animate-spin" />
              ) : null}
              Update {selectedIds.size} Project{selectedIds.size !== 1 ? 's' : ''}
            </AlertDialogAction>
          </AlertDialogFooter>
        </AlertDialogContent>
      </AlertDialog>

      {/* Delete Confirmation Dialog */}
      <AlertDialog open={deleteDialogOpen} onOpenChange={setDeleteDialogOpen}>
        <AlertDialogContent>
          <AlertDialogHeader>
            <AlertDialogTitle>Delete Project</AlertDialogTitle>
            <AlertDialogDescription>
              Are you sure you want to delete &quot;{projectToDelete?.title}&quot;? This will
              permanently remove the project, all its files, assignments, and evaluations.
              This action cannot be undone.
            </AlertDialogDescription>
          </AlertDialogHeader>
          <AlertDialogFooter>
            <AlertDialogCancel>Cancel</AlertDialogCancel>
            <AlertDialogAction
              onClick={() => projectToDelete && deleteProject.mutate({ id: projectToDelete.id })}
              className="bg-destructive text-destructive-foreground hover:bg-destructive/90"
            >
              {deleteProject.isPending ? (
                <Loader2 className="mr-2 h-4 w-4 animate-spin" />
              ) : null}
              Delete
            </AlertDialogAction>
          </AlertDialogFooter>
        </AlertDialogContent>
      </AlertDialog>

      {/* AI Tagging Dialog */}
      <Dialog open={aiTagDialogOpen} onOpenChange={handleCloseTaggingDialog}>
        <DialogContent className="sm:max-w-lg">
          <DialogHeader>
            <DialogTitle className="flex items-center gap-2">
              <div className="flex h-10 w-10 items-center justify-center rounded-full bg-gradient-to-br from-amber-400 to-orange-500">
                <Sparkles className="h-5 w-5 text-white" />
              </div>
              <div>
                <span>AI Tag Generator</span>
                <p className="text-sm font-normal text-muted-foreground">
                  Automatically categorize projects with expertise tags
                </p>
              </div>
            </DialogTitle>
          </DialogHeader>

          <div className="space-y-6 py-4">
            {/* Progress Indicator (when running) */}
            {taggingInProgress && (
              <div className="p-4 rounded-lg bg-blue-50 dark:bg-blue-950/20 border border-blue-200 dark:border-blue-900">
                <div className="space-y-3">
                  <div className="flex items-center gap-3">
                    <Loader2 className="h-5 w-5 animate-spin text-blue-600" />
                    <div className="flex-1">
                      <p className="font-medium text-blue-900 dark:text-blue-100">
                        AI Tagging in Progress
                      </p>
                      <p className="text-sm text-blue-700 dark:text-blue-300">
                        {jobStatus?.status === 'PENDING'
                          ? 'Initializing...'
                          : `Processing ${jobStatus?.totalProjects || 0} projects with AI...`}
                      </p>
                    </div>
                    {jobStatus && jobStatus.totalProjects > 0 && (
                      <Badge variant="outline" className="border-blue-300 text-blue-700">
                        <Clock className="mr-1 h-3 w-3" />
                        {jobStatus.processedCount} / {jobStatus.totalProjects}
                      </Badge>
                    )}
                  </div>
                  <div className="space-y-1">
                    <div className="flex justify-between text-sm">
                      <span className="text-blue-700 dark:text-blue-300">
                        {jobStatus?.processedCount || 0} of {jobStatus?.totalProjects || '?'} projects processed
                        {jobStatus?.taggedCount ? ` (${jobStatus.taggedCount} tagged)` : ''}
                      </span>
                      {jobStatus && jobStatus.totalProjects > 0 && (
                        <span className="font-medium text-blue-900 dark:text-blue-100">
                          {taggingProgressPercent}%
                        </span>
                      )}
                    </div>
                    <Progress
                      value={jobStatus?.totalProjects ? taggingProgressPercent : undefined}
                      className={`h-2 ${!jobStatus?.totalProjects ? 'animate-pulse' : ''}`}
                    />
                  </div>
                  {jobStatus?.failedCount ? (
                    <p className="text-xs text-amber-600">
                      {jobStatus.failedCount} projects failed so far
                    </p>
                  ) : null}
                </div>
              </div>
            )}

            {/* Result Display */}
            {taggingResult && !taggingInProgress && (
              <div className={`p-4 rounded-lg border ${
                taggingResult.failed > 0
                  ? 'bg-amber-50 dark:bg-amber-950/20 border-amber-200 dark:border-amber-900'
                  : taggingResult.processed > 0
                    ? 'bg-green-50 dark:bg-green-950/20 border-green-200 dark:border-green-900'
                    : 'bg-muted border-border'
              }`}>
                <div className="flex items-center gap-3 mb-3">
                  {taggingResult.processed > 0 ? (
                    <CheckCircle2 className="h-5 w-5 text-green-600" />
                  ) : taggingResult.errors.length > 0 ? (
                    <AlertCircle className="h-5 w-5 text-amber-600" />
                  ) : (
                    <Tags className="h-5 w-5 text-muted-foreground" />
                  )}
                  <span className="font-medium">
                    {taggingResult.processed > 0
                      ? 'Tagging Complete'
                      : taggingResult.errors.length > 0
                        ? 'Tagging Issue'
                        : 'No Projects to Tag'}
                  </span>
                </div>
                <div className="grid grid-cols-3 gap-3 text-center">
                  <div className="p-2 rounded bg-background">
                    <p className="text-2xl font-bold text-green-600">{taggingResult.processed}</p>
                    <p className="text-xs text-muted-foreground">Tagged</p>
                  </div>
                  <div className="p-2 rounded bg-background">
                    <p className="text-2xl font-bold text-muted-foreground">{taggingResult.skipped}</p>
                    <p className="text-xs text-muted-foreground">Already Tagged</p>
                  </div>
                  <div className="p-2 rounded bg-background">
                    <p className="text-2xl font-bold text-red-600">{taggingResult.failed}</p>
                    <p className="text-xs text-muted-foreground">Failed</p>
                  </div>
                </div>
                {taggingResult.errors.length > 0 && (
                  <div className="mt-3 space-y-2">
                    <p className="text-sm font-medium text-amber-700 dark:text-amber-300">
                      {taggingResult.errors.length} project{taggingResult.errors.length > 1 ? 's' : ''} failed:
                    </p>
                    <div className="max-h-32 overflow-y-auto rounded bg-background/50 p-2 text-xs space-y-1">
                      {taggingResult.errors.map((error, i) => (
                        <p key={i} className="text-amber-700 dark:text-amber-300">
                          • {error}
                        </p>
                      ))}
                    </div>
                  </div>
                )}
              </div>
            )}

            {/* Scope Selection */}
            {!taggingInProgress && !taggingResult && (
              <>
                <div className="space-y-3">
                  <Label className="text-sm font-medium">Tagging Scope</Label>
                  <div className="grid grid-cols-2 gap-3">
                    <button
                      type="button"
                      onClick={() => setTaggingScope('round')}
                      className={`flex flex-col items-center gap-2 p-4 rounded-lg border-2 transition-colors ${
                        taggingScope === 'round'
                          ? 'border-primary bg-primary/5'
                          : 'border-border hover:border-muted-foreground/30'
                      }`}
                    >
                      <FolderOpen className={`h-6 w-6 ${taggingScope === 'round' ? 'text-primary' : 'text-muted-foreground'}`} />
                      <span className={`text-sm font-medium ${taggingScope === 'round' ? 'text-primary' : ''}`}>
                        Single Round
                      </span>
                      <span className="text-xs text-muted-foreground text-center">
                        Tag projects in one specific round
                      </span>
                    </button>
                    <button
                      type="button"
                      onClick={() => setTaggingScope('program')}
                      className={`flex flex-col items-center gap-2 p-4 rounded-lg border-2 transition-colors ${
                        taggingScope === 'program'
                          ? 'border-primary bg-primary/5'
                          : 'border-border hover:border-muted-foreground/30'
                      }`}
                    >
                      <Layers className={`h-6 w-6 ${taggingScope === 'program' ? 'text-primary' : 'text-muted-foreground'}`} />
                      <span className={`text-sm font-medium ${taggingScope === 'program' ? 'text-primary' : ''}`}>
                        Entire Edition
                      </span>
                      <span className="text-xs text-muted-foreground text-center">
                        Tag all projects across all rounds
                      </span>
                    </button>
                  </div>
                </div>

                {/* Selection */}
                <div className="space-y-2">
                  {taggingScope === 'round' ? (
                    <>
                      <Label htmlFor="round-select">Select Round</Label>
                      <Select
                        value={selectedRoundForTagging}
                        onValueChange={setSelectedRoundForTagging}
                      >
                        <SelectTrigger id="round-select">
                          <SelectValue placeholder="Choose a round..." />
                        </SelectTrigger>
                        <SelectContent>
                          {filterOptions?.rounds?.map((round) => (
                            <SelectItem key={round.id} value={round.id}>
                              {round.name} ({round.program?.name})
                            </SelectItem>
                          ))}
                        </SelectContent>
                      </Select>
                    </>
                  ) : (
                    <>
                      <Label htmlFor="program-select">Select Edition</Label>
                      <Select
                        value={selectedProgramForTagging}
                        onValueChange={setSelectedProgramForTagging}
                      >
                        <SelectTrigger id="program-select">
                          <SelectValue placeholder="Choose an edition..." />
                        </SelectTrigger>
                        <SelectContent>
                          {programs?.map((program) => (
                            <SelectItem key={program.id} value={program.id}>
                              {program.name} ({program.year})
                            </SelectItem>
                          ))}
                        </SelectContent>
                      </Select>
                    </>
                  )}
                </div>

                {/* Info Note */}
                <div className="flex items-start gap-2 p-3 rounded-lg bg-muted/50">
                  <Tags className="h-4 w-4 mt-0.5 text-muted-foreground shrink-0" />
                  <p className="text-sm text-muted-foreground">
                    Only projects without existing tags will be processed. AI will analyze project descriptions and assign relevant expertise tags for jury matching.
                  </p>
                </div>
              </>
            )}
          </div>

          {/* Footer */}
          <div className="flex justify-end gap-3 pt-2 border-t">
            {taggingResult ? (
              <Button onClick={handleCloseTaggingDialog}>
                Done
              </Button>
            ) : (
              <>
                <Button
                  variant="outline"
                  onClick={handleCloseTaggingDialog}
                  disabled={taggingInProgress}
                >
                  Cancel
                </Button>
                <Button
                  onClick={handleStartTagging}
                  disabled={
                    taggingInProgress ||
                    (taggingScope === 'round' && !selectedRoundForTagging) ||
                    (taggingScope === 'program' && !selectedProgramForTagging)
                  }
                >
                  {taggingInProgress ? (
                    <Loader2 className="mr-2 h-4 w-4 animate-spin" />
                  ) : (
                    <Sparkles className="mr-2 h-4 w-4" />
                  )}
                  {taggingInProgress ? 'Processing...' : 'Generate Tags'}
                </Button>
              </>
            )}
          </div>
        </DialogContent>
      </Dialog>
    </div>
  )
}
