'use client';

import { useCallback, useState } from 'react';
import { Milestone, Plus } from 'lucide-react';

import { PageHeader } from '@/components/page-header';
import {
  AlertDialog,
  AlertDialogAction,
  AlertDialogCancel,
  AlertDialogContent,
  AlertDialogDescription,
  AlertDialogFooter,
  AlertDialogHeader,
  AlertDialogTitle,
} from '@/components/ui/alert-dialog';
import { Button } from '@/components/ui/button';
import type { Chainage } from '@/types';

import { SegmentDialog } from './components/SegmentDialog';
import { SegmentTable } from './components/SegmentTable';
import { useSegmentColumns } from './components/SegmentColumns';
import { useSegmentFilters } from './hooks/useSegmentFilters';
import { useSegmentForm } from './hooks/useSegmentForm';
import {
  useAllPackageOptionsQuery,
  useDeleteSegmentMutation,
  useProjectOptionsQuery,
  useSegmentsQuery,
} from './hooks/useSegmentQueries';

export default function SegmentPage() {
  const [isDialogOpen, setIsDialogOpen] = useState(false);
  const [segmentToDelete, setSegmentToDelete] = useState<Chainage | null>(null);
  const { skip, setSkip, limit, setLimit } = useSegmentFilters();
  const segmentsQuery = useSegmentsQuery({ skip, limit });
  const projectsQuery = useProjectOptionsQuery();
  const allPackagesQuery = useAllPackageOptionsQuery();
  const deleteSegmentMutation = useDeleteSegmentMutation();
  const segmentForm = useSegmentForm({
    onSaved: () => setIsDialogOpen(false),
  });
  const {
    register,
    onSubmit,
    openCreate: prepareCreateSegment,
    openEdit: prepareEditSegment,
    resetForm,
    segmentId,
    projectId,
    setProjectId,
    packageId,
    setPackageId,
    direction,
    setDirection,
    errors,
    isSubmitted,
    canSubmit,
    isSaving,
  } = segmentForm;
  const openCreate = useCallback(() => {
    prepareCreateSegment();
    setIsDialogOpen(true);
  }, [prepareCreateSegment]);

  const openEdit = useCallback(
    (segment: Chainage) => {
      const pkg = allPackagesQuery.data?.items.find(
        (item) => item.id === segment.package_id,
      );
      prepareEditSegment(segment, pkg?.project_id || '');
      setIsDialogOpen(true);
    },
    [allPackagesQuery.data?.items, prepareEditSegment],
  );

  const handleDialogOpenChange = useCallback(
    (open: boolean) => {
      setIsDialogOpen(open);
      if (!open) {
        resetForm();
      }
    },
    [resetForm],
  );

  const deleteSegment = useCallback(
    (segment: Chainage) => {
      setSegmentToDelete(segment);
    },
    [],
  );

  const handleDeleteDialogOpenChange = useCallback((open: boolean) => {
    if (!open) {
      setSegmentToDelete(null);
    }
  }, []);

  const confirmDeleteSegment = useCallback(() => {
    if (!segmentToDelete) return;

    deleteSegmentMutation.mutate(segmentToDelete, {
      onSettled: () => setSegmentToDelete(null),
    });
  }, [deleteSegmentMutation, segmentToDelete]);

  const projects = projectsQuery.data?.items ?? [];
  const allPackages = allPackagesQuery.data?.items ?? [];
  const segments = segmentsQuery.data?.items ?? [];
  const total = segmentsQuery.data?.totalItems ?? 0;
  const columns = useSegmentColumns(projects, allPackages);

  return (
    <>
      <main className="relative z-10 space-y-5">
        <PageHeader
          title="Segment Management"
          description="Manage road segments"
          icon={Milestone}
          actions={
            <Button onClick={openCreate} size="sm">
              <Plus />
              Add Segment
            </Button>
          }
        />

        <SegmentTable
          columns={columns}
          segments={segments}
          isLoading={segmentsQuery.isLoading || deleteSegmentMutation.isPending}
          skip={skip}
          limit={limit}
          total={total}
          onPageChange={setSkip}
          onLimitChange={setLimit}
          onEdit={openEdit}
          onDelete={deleteSegment}
        />
      </main>

      <SegmentDialog
        open={isDialogOpen}
        onOpenChange={handleDialogOpenChange}
        segmentId={segmentId}
        projectId={projectId}
        onProjectChange={setProjectId}
        packageId={packageId}
        onPackageChange={setPackageId}
        direction={direction}
        onDirectionChange={setDirection}
        register={register}
        errors={errors}
        isSubmitted={isSubmitted}
        onSubmit={onSubmit}
        canSubmit={canSubmit}
        isSaving={isSaving}
      />

      <AlertDialog
        open={Boolean(segmentToDelete)}
        onOpenChange={handleDeleteDialogOpenChange}
      >
        <AlertDialogContent>
          <AlertDialogHeader>
            <AlertDialogTitle>Delete segment?</AlertDialogTitle>
            <AlertDialogDescription>
              This will permanently delete{' '}
              <span className="font-medium text-foreground">
                {segmentToDelete?.segment_name}
              </span>
              . This action cannot be undone.
            </AlertDialogDescription>
          </AlertDialogHeader>
          <AlertDialogFooter>
            <AlertDialogCancel disabled={deleteSegmentMutation.isPending}>
              Cancel
            </AlertDialogCancel>
            <AlertDialogAction
              variant="destructive"
              disabled={deleteSegmentMutation.isPending}
              onClick={confirmDeleteSegment}
            >
              Delete
            </AlertDialogAction>
          </AlertDialogFooter>
        </AlertDialogContent>
      </AlertDialog>
    </>
  );
}