import { useEffect, useState } from 'react';

import { zodResolver } from '@hookform/resolvers/zod';
import { useLingui } from '@lingui/react/macro';
import { Trans } from '@lingui/react/macro';
import type * as DialogPrimitive from '@radix-ui/react-dialog';
import { FolderIcon, HomeIcon, Search } from 'lucide-react';
import { useForm } from 'react-hook-form';
import { z } from 'zod';

import { AppError, AppErrorCode } from '@documenso/lib/errors/app-error';
import { trpc } from '@documenso/trpc/react';
import type { TFolderWithSubfolders } from '@documenso/trpc/server/folder-router/schema';
import { Button } from '@documenso/ui/primitives/button';
import {
  Dialog,
  DialogContent,
  DialogDescription,
  DialogFooter,
  DialogHeader,
  DialogTitle,
} from '@documenso/ui/primitives/dialog';
import {
  Form,
  FormControl,
  FormField,
  FormItem,
  FormMessage,
} from '@documenso/ui/primitives/form/form';
import { Input } from '@documenso/ui/primitives/input';
import { useToast } from '@documenso/ui/primitives/use-toast';

export type FolderMoveDialogProps = {
  foldersData: TFolderWithSubfolders[] | undefined;
  folder: TFolderWithSubfolders | null;
  isOpen: boolean;
  onOpenChange: (open: boolean) => void;
} & Omit<DialogPrimitive.DialogProps, 'children'>;

const ZMoveFolderFormSchema = z.object({
  targetFolderId: z.string().nullable(),
});

type TMoveFolderFormSchema = z.infer<typeof ZMoveFolderFormSchema>;

export const FolderMoveDialog = ({
  foldersData,
  folder,
  isOpen,
  onOpenChange,
}: FolderMoveDialogProps) => {
  const { t } = useLingui();
  const { toast } = useToast();
  const [searchTerm, setSearchTerm] = useState('');

  const { mutateAsync: moveFolder } = trpc.folder.moveFolder.useMutation();

  const form = useForm<TMoveFolderFormSchema>({
    resolver: zodResolver(ZMoveFolderFormSchema),
    defaultValues: {
      targetFolderId: folder?.parentId ?? null,
    },
  });

  const onFormSubmit = async ({ targetFolderId }: TMoveFolderFormSchema) => {
    if (!folder) return;

    try {
      await moveFolder({
        id: folder.id,
        parentId: targetFolderId || null,
      });

      onOpenChange(false);

      toast({
        title: t`Folder moved successfully`,
      });
    } catch (err) {
      const error = AppError.parseError(err);

      if (error.code === AppErrorCode.NOT_FOUND) {
        toast({
          title: t`Folder not found`,
          description: t`The folder you are trying to move does not exist.`,
          variant: 'destructive',
        });

        return;
      }

      toast({
        title: t`Failed to move folder`,
        description: t`An unknown error occurred while moving the folder.`,
        variant: 'destructive',
      });
    }
  };

  useEffect(() => {
    if (!isOpen) {
      form.reset();
      setSearchTerm('');
    }
  }, [isOpen, form]);

  // Filter out the current folder, only show folders of the same type, and filter by search term
  const filteredFolders = foldersData?.filter(
    (f) =>
      f.id !== folder?.id &&
      f.type === folder?.type &&
      (searchTerm === '' || f.name.toLowerCase().includes(searchTerm.toLowerCase())),
  );

  return (
    <Dialog open={isOpen} onOpenChange={onOpenChange}>
      <DialogContent>
        <DialogHeader>
          <DialogTitle>
            <Trans>Move Folder</Trans>
          </DialogTitle>
          <DialogDescription>
            <Trans>Select a destination for this folder.</Trans>
          </DialogDescription>
        </DialogHeader>

        <div className="relative">
          <Search className="text-muted-foreground absolute left-2 top-3 h-4 w-4" />
          <Input
            placeholder={t`Search folders...`}
            value={searchTerm}
            onChange={(e) => setSearchTerm(e.target.value)}
            className="pl-8"
          />
        </div>

        <Form {...form}>
          <form onSubmit={form.handleSubmit(onFormSubmit)}>
            <fieldset disabled={form.formState.isSubmitting} className="space-y-4">
              <FormField
                control={form.control}
                name="targetFolderId"
                render={({ field }) => (
                  <FormItem>
                    <FormControl>
                      <div className="max-h-96 space-y-2 overflow-y-auto">
                        <Button
                          type="button"
                          variant={!field.value ? 'default' : 'outline'}
                          className="w-full justify-start"
                          disabled={!folder?.parentId}
                          onClick={() => field.onChange(null)}
                        >
                          <HomeIcon className="mr-2 h-4 w-4" />
                          <Trans>Home</Trans>
                        </Button>

                        {filteredFolders &&
                          filteredFolders.map((f) => (
                            <Button
                              key={f.id}
                              type="button"
                              disabled={f.id === folder?.parentId}
                              variant={field.value === f.id ? 'default' : 'outline'}
                              className="w-full justify-start"
                              onClick={() => field.onChange(f.id)}
                            >
                              <FolderIcon className="mr-2 h-4 w-4" />
                              {f.name}
                            </Button>
                          ))}
                      </div>
                    </FormControl>
                    <FormMessage />
                  </FormItem>
                )}
              />

              <DialogFooter>
                <Button type="button" variant="secondary" onClick={() => onOpenChange(false)}>
                  <Trans>Cancel</Trans>
                </Button>
                <Button type="submit" loading={form.formState.isSubmitting}>
                  <Trans>Move</Trans>
                </Button>
              </DialogFooter>
            </fieldset>
          </form>
        </Form>
      </DialogContent>
    </Dialog>
  );
};