import React, { useState, useEffect, useCallback } from 'react';
import { useTranslation } from 'react-i18next';

import userService from '../api/services/userService';
import Trash from '../assets/trash.svg';
import CreateAPIKeyModal from '../modals/CreateAPIKeyModal';
import SaveAPIKeyModal from '../modals/SaveAPIKeyModal';
import ConfirmationModal from '../modals/ConfirmationModal';
import { APIKeyData } from './types';
import SkeletonLoader from '../components/SkeletonLoader';

export default function APIKeys() {
  const { t } = useTranslation();
  const [isCreateModalOpen, setCreateModal] = useState(false);
  const [isSaveKeyModalOpen, setSaveKeyModal] = useState(false);
  const [newKey, setNewKey] = useState('');
  const [apiKeys, setApiKeys] = useState<APIKeyData[]>([]);
  const [loading, setLoading] = useState<boolean>(false);
  const [keyToDelete, setKeyToDelete] = useState<{
    id: string;
    name: string;
  } | null>(null);

  const setLoadingWithMinDuration = useCallback((isLoading: boolean) => {
    if (isLoading) {
      setLoading(true);
    } else {
      setTimeout(() => {
        setLoading(false);
      }, 2000);
    }
  }, []);

  const handleFetchKeys = useCallback(async () => {
    setLoadingWithMinDuration(true);
    try {
      const response = await userService.getAPIKeys();
      if (!response.ok) {
        throw new Error('Failed to fetch API Keys');
      }
      const apiKeys = await response.json();
      setApiKeys(apiKeys);
    } catch (error) {
      console.log(error);
    } finally {
      setLoadingWithMinDuration(false);
    }
  }, [setLoadingWithMinDuration]);

  const handleDeleteKey = useCallback(
    (id: string) => {
      setLoadingWithMinDuration(true);
      userService
        .deleteAPIKey({ id })
        .then((response) => {
          if (!response.ok) {
            throw new Error('Failed to delete API Key');
          }
          return response.json();
        })
        .then((data) => {
          if (data.success === true) {
            setApiKeys((previous) => previous.filter((elem) => elem.id !== id));
          }
          setKeyToDelete(null);
        })
        .catch((error) => {
          console.error(error);
        })
        .finally(() => {
          setLoadingWithMinDuration(false);
        });
    },
    [setLoadingWithMinDuration],
  );

  const handleCreateKey = useCallback(
    (payload: {
      name: string;
      source?: string;
      retriever?: string;
      prompt_id: string;
      chunks: string;
    }) => {
      setLoadingWithMinDuration(true);
      userService
        .createAPIKey(payload)
        .then((response) => {
          if (!response.ok) {
            throw new Error('Failed to create API Key');
          }
          return response.json();
        })
        .then((data) => {
          setApiKeys((prevKeys) => [...prevKeys, data]);
          setCreateModal(false);
          setNewKey(data.key);
          setSaveKeyModal(true);
          handleFetchKeys();
        })
        .catch((error) => {
          console.error(error);
        })
        .finally(() => {
          setLoadingWithMinDuration(false);
        });
    },
    [handleFetchKeys, setLoadingWithMinDuration],
  );

  useEffect(() => {
    handleFetchKeys();
  }, [handleFetchKeys]);

  const confirmDelete = () => {
    if (keyToDelete) {
      handleDeleteKey(keyToDelete.id);
    }
  };

  return (
    <div className="mt-8">
      <div className="flex flex-col max-w-[876px]">
        <div className="flex justify-end">
          <button
            onClick={() => setCreateModal(true)}
            className="rounded-full bg-purple-30 px-4 py-3 text-white hover:bg-[#6F3FD1]"
          >
            {t('settings.apiKeys.createNew')}
          </button>
        </div>
        {isCreateModalOpen && (
          <CreateAPIKeyModal
            createAPIKey={handleCreateKey}
            close={() => setCreateModal(false)}
          />
        )}
        {isSaveKeyModalOpen && (
          <SaveAPIKeyModal
            apiKey={newKey}
            close={() => setSaveKeyModal(false)}
          />
        )}
        {keyToDelete && (
          <ConfirmationModal
            message={t('settings.apiKeys.deleteConfirmation', {
              name: keyToDelete.name,
            })}
            modalState="ACTIVE"
            setModalState={() => setKeyToDelete(null)}
            submitLabel={t('modals.deleteConv.delete')}
            handleSubmit={confirmDelete}
            handleCancel={() => setKeyToDelete(null)}
          />
        )}
        <div className="mt-[27px] w-full">
          <div className="w-full overflow-x-auto">
            {loading ? (
              <SkeletonLoader count={1} component={'chatbot'} />
            ) : (
              <div className="flex flex-col">
                <div className="flex-grow">
                  <div className="dark:border-silver/40 border-silver rounded-md border overflow-auto">
                    <table className="min-w-full divide-y divide-silver dark:divide-silver/40 ">
                      <thead>
                        <tr className="text-start text-sm font-medium text-gray-700 dark:text-gray-50 uppercase">
                          <th scope="col" className="p-2">
                            {t('settings.apiKeys.name')}
                          </th>
                          <th scope="col" className="p-2">
                            {t('settings.apiKeys.sourceDoc')}
                          </th>
                          <th scope="col" className="p-2">
                            {t('settings.apiKeys.key')}
                          </th>
                          <th
                            scope="col"
                            className="p-2"
                            aria-label="Actions"
                          ></th>
                        </tr>
                      </thead>
                      <tbody className="divide-y divide-gray-200 dark:divide-neutral-700">
                        {!apiKeys?.length && (
                          <tr>
                            <td
                              colSpan={4}
                              className="!p-4 text-gray-800 dark:text-neutral-200 text-center"
                            >
                              {t('settings.apiKeys.noData')}
                            </td>
                          </tr>
                        )}
                        {Array.isArray(apiKeys) &&
                          apiKeys.map((element, index) => (
                            <tr
                              key={index}
                              className="text-nowrap whitespace-nowrap text-center text-sm font-medium text-gray-800 dark:text-neutral-200 p-2"
                            >
                              <td className="p-1">{element.name}</td>
                              <td className="p-2">{element.source}</td>
                              <td>{element.key}</td>
                              <td>
                                <img
                                  src={Trash}
                                  alt={`Delete ${element.name}`}
                                  className="h-4 w-4 cursor-pointer hover:opacity-50"
                                  id={`img-${index}`}
                                  onClick={() =>
                                    setKeyToDelete({
                                      id: element.id,
                                      name: element.name,
                                    })
                                  }
                                />
                              </td>
                            </tr>
                          ))}
                      </tbody>
                    </table>
                  </div>
                </div>
              </div>
            )}
          </div>
        </div>
      </div>
    </div>
  );
}