import React, { useState } from 'react';
import Arrow2 from './assets/dropdown-arrow.svg';
import ArrowLeft from './assets/arrow-left.svg';
import ArrowRight from './assets/arrow-right.svg';

type PromptProps = {
  prompts: string[];
  selectedPrompt: string;
  onSelectPrompt: (prompt: string) => void;
  onAddPrompt: (name: string) => void;
  newPromptName: string;
  onNewPromptNameChange: (name: string) => void;
  isAddPromptModalOpen: boolean;
  onToggleAddPromptModal: () => void;
  onDeletePrompt: (name: string) => void;
};

const Setting: React.FC = () => {
  const tabs = ['General', 'Prompts', 'Documents', 'Widgets'];
  const [activeTab, setActiveTab] = useState('General');
  const [prompts, setPrompts] = useState<string[]>(['Prompt 1', 'Prompt 2']);
  const [selectedPrompt, setSelectedPrompt] = useState('');
  const [newPromptName, setNewPromptName] = useState('');
  const [isAddPromptModalOpen, setAddPromptModalOpen] = useState(false);
  const onDeletePrompt = (name: string) => {
    setPrompts(prompts.filter((prompt) => prompt !== name));
    setSelectedPrompt(''); // Clear the selected prompt
  };

  return (
    <div className="p-4 pt-20 md:p-12">
      <p className="text-2xl font-bold text-eerie-black">Settings</p>
      <div className="mt-6 flex flex-row items-center space-x-4 overflow-x-auto md:space-x-8 ">
        <div className="md:hidden">
          <button
            onClick={() => scrollTabs(-1)}
            className="flex h-8 w-8 items-center justify-center rounded-full border-2 border-purple-30 transition-all hover:bg-gray-100"
          >
            <img src={ArrowLeft} alt="left-arrow" className="h-6 w-6" />
          </button>
        </div>
        <div className="flex flex-nowrap space-x-4 overflow-x-auto md:space-x-8">
          {tabs.map((tab, index) => (
            <button
              key={index}
              onClick={() => setActiveTab(tab)}
              className={`h-9 rounded-3xl px-4 font-bold ${
                activeTab === tab
                  ? 'bg-purple-3000 text-purple-30'
                  : 'text-gray-6000'
              }`}
            >
              {tab}
            </button>
          ))}
        </div>
        <div className="md:hidden">
          <button
            onClick={() => scrollTabs(1)}
            className="flex h-8 w-8 items-center justify-center rounded-full border-2 border-purple-30 hover:bg-gray-100"
          >
            <img src={ArrowRight} alt="right-arrow" className="h-6 w-6" />
          </button>
        </div>
      </div>
      {renderActiveTab()}
    </div>
  );

  function scrollTabs(direction: number) {
    const container = document.querySelector('.flex-nowrap');
    if (container) {
      container.scrollLeft += direction * 100; // Adjust the scroll amount as needed
    }
  }

  function renderActiveTab() {
    switch (activeTab) {
      case 'General':
        return <General />;
      case 'Prompts':
        return (
          <Prompts
            prompts={prompts}
            selectedPrompt={selectedPrompt}
            onSelectPrompt={setSelectedPrompt}
            onAddPrompt={addPrompt}
            newPromptName={''}
            onNewPromptNameChange={function (name: string): void {
              throw new Error('Function not implemented.');
            }}
            isAddPromptModalOpen={false}
            onToggleAddPromptModal={function (): void {
              throw new Error('Function not implemented.');
            }}
            onDeletePrompt={onDeletePrompt}
          />
        );
      case 'Documents':
        return <Documents />;
      case 'Widgets':
        return <Widgets />;
      default:
        return null;
    }
  }

  function addPrompt(name: string) {
    if (name) {
      setPrompts([...prompts, name]);
      setNewPromptName('');
      toggleAddPromptModal();
    }
  }

  function toggleAddPromptModal() {
    setAddPromptModalOpen(!isAddPromptModalOpen);
  }
};

const General: React.FC = () => {
  const themes = ['Light', 'Dark'];
  const languages = ['English', 'French', 'Hindi'];
  const [selectedTheme, setSelectedTheme] = useState(themes[0]);
  const [selectedLanguage, setSelectedLanguage] = useState(languages[0]);

  return (
    <div className="mt-[59px]">
      <div className="mb-4">
        <p className="font-bold text-jet">Select Theme</p>
        <Dropdown
          options={themes}
          selectedValue={selectedTheme}
          onSelect={setSelectedTheme}
        />
      </div>
      <div>
        <p className="font-bold text-jet">Select Language</p>
        <Dropdown
          options={languages}
          selectedValue={selectedLanguage}
          onSelect={setSelectedLanguage}
        />
      </div>
    </div>
  );
};

export default Setting;

const Prompts: React.FC<PromptProps> = ({
  prompts,
  selectedPrompt,
  onSelectPrompt,
  onAddPrompt,
  onDeletePrompt,
}) => {
  const [isAddPromptModalOpen, setAddPromptModalOpen] = useState(false);
  const [newPromptName, setNewPromptName] = useState('');

  const openAddPromptModal = () => {
    setAddPromptModalOpen(true);
  };

  const closeAddPromptModal = () => {
    setAddPromptModalOpen(false);
  };

  const handleDeletePrompt = () => {
    if (selectedPrompt) {
      onDeletePrompt(selectedPrompt); // Remove the selected prompt
    }
  };

  return (
    <div className="mt-[59px]">
      <div className="mb-4">
        <p className="font-bold text-jet">Select Prompt</p>
        <Dropdown
          options={prompts}
          selectedValue={selectedPrompt}
          onSelect={onSelectPrompt}
        />
      </div>
      <div>
        <button
          onClick={openAddPromptModal}
          className="rounded-lg bg-purple-500 px-4 py-2 font-bold text-white hover:bg-purple-600"
        >
          Add New Prompt
        </button>
      </div>
      {isAddPromptModalOpen && (
        <AddPromptModal
          newPromptName={newPromptName}
          onNewPromptNameChange={setNewPromptName}
          onAddPrompt={() => {
            onAddPrompt(newPromptName);
            closeAddPromptModal();
          }}
          onClose={closeAddPromptModal}
        />
      )}
      <div className="mt-4">
        <button
          onClick={handleDeletePrompt}
          className="rounded-lg bg-red-600 px-4 py-2 font-bold text-white hover:text-zinc-800"
        >
          Delete Prompt
        </button>
      </div>
    </div>
  );
};

function Dropdown({
  options,
  selectedValue,
  onSelect,
}: {
  options: string[];
  selectedValue: string;
  onSelect: (value: string) => void;
}) {
  const [isOpen, setIsOpen] = useState(false);

  return (
    <div className="relative mt-2 h-[43.33px] w-[342px]">
      <button
        onClick={() => setIsOpen(!isOpen)}
        className="flex w-full cursor-pointer items-center rounded-3xl border-2 bg-white p-3"
      >
        <span className="flex-1 overflow-hidden text-ellipsis">
          {selectedValue}
        </span>
        <img
          src={Arrow2}
          alt="arrow"
          className={`transform ${
            isOpen ? 'rotate-180' : 'rotate-0'
          } h-4 w-4 transition-transform`}
        />
      </button>
      {isOpen && (
        <div className="absolute left-0 right-0 top-12 z-50 mt-2 bg-white p-2 shadow-lg">
          {options.map((option, index) => (
            <div
              key={index}
              onClick={() => {
                onSelect(option);
                setIsOpen(false);
              }}
              className="flex cursor-pointer items-center justify-between border-b-2 py-3 hover:bg-gray-100"
            >
              <span className="flex-1 overflow-hidden overflow-ellipsis whitespace-nowrap">
                {option}
              </span>
            </div>
          ))}
        </div>
      )}
    </div>
  );
}

type AddPromptModalProps = {
  newPromptName: string;
  onNewPromptNameChange: (name: string) => void;
  onAddPrompt: () => void;
  onClose: () => void;
};

const AddPromptModal: React.FC<AddPromptModalProps> = ({
  newPromptName,
  onNewPromptNameChange,
  onAddPrompt,
  onClose,
}) => {
  return (
    <div className="fixed top-0 left-0 flex h-screen w-screen items-center justify-center bg-gray-900 bg-opacity-50">
      <div className="rounded-lg bg-white p-4">
        <p className="mb-2 text-2xl font-bold text-jet">Add New Prompt</p>
        <input
          type="text"
          placeholder="Enter Prompt Name"
          value={newPromptName}
          onChange={(e) => onNewPromptNameChange(e.target.value)}
          className="mb-4 w-full rounded-lg border-2 p-2"
        />
        <button
          onClick={onAddPrompt}
          className="rounded-lg bg-purple-500 px-4 py-2 font-bold text-white hover:bg-purple-600"
        >
          Save
        </button>
        <button
          onClick={onClose}
          className="mt-4 rounded-lg px-4 py-2 font-bold text-red-500"
        >
          Cancel
        </button>
      </div>
    </div>
  );
};

const Documents: React.FC = () => {
  return (
    <div className="mt-8">
      <p>This is the Documents section.</p>
    </div>
  );
};

const Widgets: React.FC = () => {
  return <div>This is widgets</div>;
};