import { useSignal } from '@preact/signals';
import { useEffect } from 'preact/hooks';

import { Directory, DirectoryFile } from '/lib/types.ts';
// import { RequestBody, ResponseBody } from '/routes/api/files/search.tsx';
interface SearchFilesProps {}

export default function SearchFiles({}: SearchFilesProps) {
  const isSearching = useSignal<boolean>(false);
  const areResultsVisible = useSignal<boolean>(false);
  const matchingDirectories = useSignal<Directory[]>([]);
  const matchingFiles = useSignal<DirectoryFile[]>([]);
  const searchTimeout = useSignal<ReturnType<typeof setTimeout>>(0);
  const closeTimeout = useSignal<ReturnType<typeof setTimeout>>(0);

  const dateFormat = new Intl.DateTimeFormat('en-GB', {
    year: 'numeric',
    month: 'long',
    day: 'numeric',
    hour: 'numeric',
    minute: '2-digit',
  });

  function searchFiles(searchTerm: string) {
    if (searchTimeout.value) {
      clearTimeout(searchTimeout.value);
    }

    if (searchTerm.trim().length < 2) {
      return;
    }

    areResultsVisible.value = false;

    searchTimeout.value = setTimeout(() => {
      isSearching.value = true;

      // TODO: Build this
      // try {
      //   const requestBody: RequestBody = { searchTerm };
      //   const response = await fetch(`/api/files/search`, {
      //     method: 'POST',
      //     body: JSON.stringify(requestBody),
      //   });
      //   const result = await response.json() as ResponseBody;

      //   if (!result.success) {
      //     throw new Error('Failed to search files!');
      //   }

      //   matchingDirectories.value = result.matchingDirectories;
      //   matchingFiles.value = result.matchingFiles;

      //   if (matchingDirectories.value.length > 0 || matchingFiles.value.length > 0) {
      //     areResultsVisible.value = true;
      //   }
      // } catch (error) {
      //   console.error(error);
      // }

      isSearching.value = false;
    }, 500);
  }

  function onFocus() {
    if (matchingDirectories.value.length > 0 || matchingFiles.value.length > 0) {
      areResultsVisible.value = true;
    }
  }

  function onBlur() {
    if (closeTimeout.value) {
      clearTimeout(closeTimeout.value);
    }

    closeTimeout.value = setTimeout(() => {
      areResultsVisible.value = false;
    }, 300);
  }

  useEffect(() => {
    return () => {
      if (searchTimeout.value) {
        clearTimeout(searchTimeout.value);
      }

      if (closeTimeout.value) {
        clearTimeout(closeTimeout.value);
      }
    };
  }, []);

  return (
    <>
      <input
        class='input-field w-72 mr-2'
        type='search'
        name='search'
        placeholder='Search files...'
        onInput={(event) => searchFiles(event.currentTarget.value)}
        onFocus={() => onFocus()}
        onBlur={() => onBlur()}
      />
      {isSearching.value ? <img src='/images/loading.svg' class='white mr-2' width={18} height={18} /> : null}
      {areResultsVisible.value
        ? (
          <section class='relative inline-block text-left ml-2 text-xs'>
            <section
              class={`absolute right-0 z-10 mt-2 w-56 origin-top-right rounded-md bg-slate-700 shadow-lg ring-1 ring-black ring-opacity-15 focus:outline-none`}
              role='menu'
              aria-orientation='vertical'
              aria-labelledby='view-button'
              tabindex={-1}
            >
              <section class='py-1'>
                <ol class='mt-2'>
                  {matchingDirectories.value.map((directory) => (
                    <li class='mb-1'>
                      <a
                        href={`/files?path=${directory.parent_path}${directory.directory_name}`}
                        class={`block px-2 py-2 hover:no-underline hover:opacity-60`}
                        target='_blank'
                        rel='noopener noreferrer'
                      >
                        <time
                          datetime={new Date(directory.updated_at).toISOString()}
                          class='mr-2 flex-none text-slate-100 block'
                        >
                          {dateFormat.format(new Date(directory.updated_at))}
                        </time>
                        <p class='flex-auto truncate font-medium text-white'>
                          {directory.directory_name}
                        </p>
                      </a>
                    </li>
                  ))}
                  {matchingFiles.value.map((file) => (
                    <li class='mb-1'>
                      <a
                        href={`/files/open/${file.file_name}?path=${file.parent_path}`}
                        class={`block px-2 py-2 hover:no-underline hover:opacity-60`}
                        target='_blank'
                        rel='noopener noreferrer'
                      >
                        <time
                          datetime={new Date(file.updated_at).toISOString()}
                          class='mr-2 flex-none text-slate-100 block'
                        >
                          {dateFormat.format(new Date(file.updated_at))}
                        </time>
                        <p class='flex-auto truncate font-medium text-white'>
                          {file.file_name}
                        </p>
                      </a>
                    </li>
                  ))}
                </ol>
              </section>
            </section>
          </section>
        )
        : null}
    </>
  );
}
