import { useState } from 'react'
import copy from 'copy-to-clipboard'
import { CheckIcon, DocumentDuplicateIcon } from '@heroicons/react/24/outline'
import Store from 'electron-store'
import { getCurrentWindow, app } from '@electron/remote'

import { install } from './install'
import OllamaIcon from './ollama.svg'

const store = new Store()

enum Step {
  WELCOME = 0,
  CLI,
  FINISH,
}

export default function () {
  const urlParams = new URLSearchParams(window.location.search);
  const stepParam = urlParams.get('step');
  const initialStep = stepParam ? Number(stepParam) : Step.WELCOME;
  const [step, setStep] = useState<Step>(initialStep);
  const [commandCopied, setCommandCopied] = useState<boolean>(false)

  const command = 'ollama run llama2'

  return (
    <div className='drag'>
      <div className='mx-auto flex min-h-screen w-full flex-col justify-between bg-white px-4 pt-16'>
        {step === Step.WELCOME && (
          <>
            <div className='mx-auto text-center'>
              <h1 className='mb-6 mt-4 text-2xl tracking-tight text-gray-900'>Welcome to Ollama</h1>
              <p className='mx-auto w-[65%] text-sm text-gray-400'>
                {stepParam} Let's get you up and running with your own large language models.
              </p>
              <button
                onClick={() => setStep(Step.CLI)}
                className='no-drag rounded-dm mx-auto my-8 w-[40%] rounded-md bg-black px-4 py-2 text-sm text-white hover:brightness-110'
              >
                Next
              </button>
            </div>
            <div className='mx-auto'>
              <OllamaIcon />
            </div>
          </>
        )}
        {step === Step.CLI && (
          <>
            <div className='mx-auto flex flex-col space-y-28 text-center'>
              <h1 className='mt-4 text-2xl tracking-tight text-gray-900'>Install the command line</h1>
              <pre className='mx-auto text-4xl text-gray-400'>&gt; ollama</pre>
              <div className='mx-auto'>
                <button
                  onClick={async () => {
                    try {
                      await install()
                      setStep(Step.FINISH)
                    } catch (e) {
                      console.error('could not install: ', e)
                    } finally {
                      getCurrentWindow().show()
                      getCurrentWindow().focus()
                    }
                  }}
                  className='no-drag rounded-dm mx-auto w-[60%] rounded-md bg-black px-4 py-2 text-sm text-white hover:brightness-110'
                >
                  Install
                </button>
                <p className='mx-auto my-4 w-[70%] text-xs text-gray-400'>
                  You will be prompted for administrator access
                </p>
              </div>
            </div>
          </>
        )}
        {step === Step.FINISH && (
          <>
            <div className='mx-auto flex flex-col space-y-20 text-center'>
              <h1 className='mt-4 text-2xl tracking-tight text-gray-900'>Run your first model</h1>
              <div className='flex flex-col'>
                <div className='group relative flex items-center'>
                  <pre className='language-none text-2xs w-full rounded-md bg-gray-100 px-4 py-3 text-start leading-normal'>
                    {command}
                  </pre>
                  <button
                    className={`no-drag absolute right-[5px] px-2 py-2 ${
                      commandCopied
                        ? 'text-gray-900 opacity-100 hover:cursor-auto'
                        : 'text-gray-200 opacity-50 hover:cursor-pointer'
                    } hover:font-bold hover:text-gray-900 group-hover:opacity-100`}
                    onClick={() => {
                      copy(command)
                      setCommandCopied(true)
                      setTimeout(() => setCommandCopied(false), 3000)
                    }}
                  >
                    {commandCopied ? (
                      <CheckIcon className='h-4 w-4 font-bold text-gray-500' />
                    ) : (
                      <DocumentDuplicateIcon className='h-4 w-4 text-gray-500' />
                    )}
                  </button>
                </div>
                <p className='mx-auto my-4 w-[70%] text-xs text-gray-400'>
                  Run this command in your favorite terminal.
                </p>
              </div>
              <button
                onClick={() => {
                  store.set('first-time-run', true)
                  window.close()
                }}
                className='no-drag rounded-dm mx-auto w-[60%] rounded-md bg-black px-4 py-2 text-sm text-white hover:brightness-110'
              >
                Finish
              </button>
            </div>
          </>
        )}
      </div>
    </div>
  )
}
