import { useState, useEffect, memo } from 'react';
import { useRecoilState, useRecoilValue } from 'recoil';
import { Settings2, ChevronDownIcon } from 'lucide-react';
import {
  SelectDropDown,
  PluginStoreDialog,
  MultiSelectDropDown,
  Button,
  GPTIcon,
} from '~/components';
import EndpointOptionsPopover from '../../Endpoints/EndpointOptionsPopover';
import SaveAsPresetDialog from '../../Endpoints/SaveAsPresetDialog';
import { Settings, AgentSettings } from '../../Endpoints/Plugins/';
import { cn } from '~/utils/';
import store from '~/store';
import { useAuthContext } from '~/hooks/AuthContext';
import { useAvailablePluginsQuery } from '@librechat/data-provider';

function PluginsOptions() {
  const { data: allPlugins } = useAvailablePluginsQuery();
  const [visibile, setVisibility] = useState(true);
  const [advancedMode, setAdvancedMode] = useState(false);
  const [availableTools, setAvailableTools] = useState([]);
  const [showAgentSettings, setShowAgentSettings] = useState(false);
  const [showSavePresetDialog, setShowSavePresetDialog] = useState(false);
  const [showPluginStoreDialog, setShowPluginStoreDialog] = useState(false);
  const [opacityClass, setOpacityClass] = useState('full-opacity');
  const [conversation, setConversation] = useRecoilState(store.conversation) || {};
  const endpointsConfig = useRecoilValue(store.endpointsConfig);
  const messagesTree = useRecoilValue(store.messagesTree);
  const { user } = useAuthContext();

  useEffect(() => {
    if (advancedMode) {
      return;
    } else if (messagesTree?.length >= 1) {
      setOpacityClass('show');
    } else {
      setOpacityClass('full-opacity');
    }
  }, [messagesTree, advancedMode]);

  useEffect(() => {
    if (allPlugins && user) {
      const pluginStore = { name: 'Plugin store', pluginKey: 'pluginStore', isButton: true };
      if (!user.plugins || user.plugins.length === 0) {
        setAvailableTools([pluginStore]);
        return;
      }
      const tools = [...user.plugins]
        .map((el) => {
          return allPlugins.find((plugin) => plugin.pluginKey === el);
        })
        .filter((el) => el);
      setAvailableTools([...tools, pluginStore]);
    }
  }, [allPlugins, user]);

  const triggerAgentSettings = () => setShowAgentSettings((prev) => !prev);
  const { endpoint, agentOptions } = conversation;

  if (endpoint !== 'gptPlugins') {
    return null;
  }
  const models = endpointsConfig?.['gptPlugins']?.['availableModels'] || [];

  const triggerAdvancedMode = () => setAdvancedMode((prev) => !prev);

  const switchToSimpleMode = () => {
    setAdvancedMode(false);
  };

  const saveAsPreset = () => {
    setShowSavePresetDialog(true);
  };

  function checkIfSelected(value) {
    if (!conversation.tools) {
      return false;
    }
    return conversation.tools.find((el) => el.pluginKey === value) ? true : false;
  }

  const setOption = (param) => (newValue) => {
    let update = {};
    update[param] = newValue;
    setConversation((prevState) => ({
      ...prevState,
      ...update,
    }));
  };

  const setAgentOption = (param) => (newValue) => {
    const editableConvo = JSON.stringify(conversation);
    const convo = JSON.parse(editableConvo);
    let { agentOptions } = convo;
    agentOptions[param] = newValue;
    setConversation((prevState) => ({
      ...prevState,
      agentOptions,
    }));
  };

  const setTools = (newValue) => {
    if (newValue === 'pluginStore') {
      setShowPluginStoreDialog(true);
      return;
    }
    let update = {};
    let current = conversation.tools || [];
    let isSelected = checkIfSelected(newValue);
    let tool = availableTools[availableTools.findIndex((el) => el.pluginKey === newValue)];
    if (isSelected) {
      update.tools = current.filter((el) => el.pluginKey !== newValue);
    } else {
      update.tools = [...current, tool];
    }
    localStorage.setItem('lastSelectedTools', JSON.stringify(update.tools));
    setConversation((prevState) => ({
      ...prevState,
      ...update,
    }));
  };

  const cardStyle =
    'transition-colors shadow-md rounded-md min-w-[75px] font-normal bg-white border-black/10 hover:border-black/10 focus:border-black/10 dark:border-black/10 dark:hover:border-black/10 dark:focus:border-black/10 border dark:bg-gray-700 text-black dark:text-white';

  return (
    <>
      <div
        className={
          'pluginOptions flex w-full flex-wrap items-center justify-center gap-2 ' +
          (!advancedMode ? opacityClass : '')
        }
        onMouseEnter={() => {
          if (advancedMode) {
            return;
          }
          setOpacityClass('full-opacity');
        }}
        onMouseLeave={() => {
          if (advancedMode) {
            return;
          }
          if (!messagesTree || messagesTree.length === 0) {
            return;
          }
          setOpacityClass('show');
        }}
      >
        <Button
          type="button"
          className={cn(
            cardStyle,
            'min-w-4 z-40 flex h-[40px] flex-none items-center justify-center px-4 hover:bg-white focus:ring-0 focus:ring-offset-0 dark:hover:bg-gray-700',
          )}
          onClick={() => setVisibility((prev) => !prev)}
        >
          <ChevronDownIcon
            className={cn(
              !visibile ? 'rotate-180 transform' : '',
              'w-4 text-gray-600 dark:text-white',
            )}
          />
        </Button>
        <SelectDropDown
          value={conversation.model}
          setValue={setOption('model')}
          availableValues={models}
          showAbove={true}
          className={cn(cardStyle, 'min-w-60 z-40 flex w-60', !visibile && 'hidden')}
        />
        <MultiSelectDropDown
          value={conversation.tools || []}
          isSelected={checkIfSelected}
          setSelected={setTools}
          availableValues={availableTools}
          optionValueKey="pluginKey"
          showAbove={true}
          className={cn(cardStyle, 'min-w-60 z-50 w-60', !visibile && 'hidden')}
        />
        <Button
          type="button"
          className={cn(
            cardStyle,
            'min-w-4 z-50 flex h-[40px] flex-none items-center justify-center px-4 hover:bg-slate-50 focus:ring-0 focus:ring-offset-0 dark:hover:bg-gray-600',
            !visibile && 'hidden',
          )}
          onClick={triggerAdvancedMode}
        >
          <Settings2 className="w-4 text-gray-600 dark:text-white" />
        </Button>
      </div>
      <EndpointOptionsPopover
        content={
          <div className="px-4 py-4">
            {showAgentSettings ? (
              <AgentSettings
                agent={agentOptions.agent}
                skipCompletion={agentOptions.skipCompletion}
                model={agentOptions.model}
                endpoint={agentOptions.endpoint}
                temperature={agentOptions.temperature}
                topP={agentOptions.top_p}
                freqP={agentOptions.presence_penalty}
                presP={agentOptions.frequency_penalty}
                setOption={setAgentOption}
                tools={conversation.tools}
              />
            ) : (
              <Settings
                model={conversation.model}
                endpoint={endpoint}
                chatGptLabel={conversation.chatGptLabel}
                promptPrefix={conversation.promptPrefix}
                temperature={conversation.temperature}
                topP={conversation.top_p}
                freqP={conversation.presence_penalty}
                presP={conversation.frequency_penalty}
                setOption={setOption}
                tools={conversation.tools}
              />
            )}
          </div>
        }
        visible={advancedMode}
        saveAsPreset={saveAsPreset}
        switchToSimpleMode={switchToSimpleMode}
        additionalButton={{
          label: `Show ${showAgentSettings ? 'Completion' : 'Agent'} Settings`,
          handler: triggerAgentSettings,
          icon: <GPTIcon className="mr-1 mt-[2px] w-[14px]" size={14} />,
        }}
      />
      <SaveAsPresetDialog
        open={showSavePresetDialog}
        onOpenChange={setShowSavePresetDialog}
        preset={conversation}
      />
      <PluginStoreDialog isOpen={showPluginStoreDialog} setIsOpen={setShowPluginStoreDialog} />
    </>
  );
}

export default memo(PluginsOptions);