import { useCallback, useEffect, useRef, useState } from "react";
import { 
  Button,
  ButtonLink,
  H1,H2,H3,H4,H5,H6,P,Label,
  LoadingBar,
  LoadingDotsTyping,
  LoadingDotsBricks,
} from "~/components";


export default function ComponentLibrary () {
  const [progress, setProgress] = useState(0);
  const loopRef = useRef<NodeJS.Timeout | null>(null);

  const pushProgressBar: ()=>void = useCallback(()=>{
    loopRef.current = setInterval(function timer(){
      setProgress((curr)=>{
        if (curr < 100){
          return curr+10;
        }else{
          if(loopRef.current)
            clearInterval(loopRef.current);
          return curr;
        }
      })}
    , 3000);
  }, []);
  useEffect(()=>{
    pushProgressBar();
    return ()=>{
      if(loopRef.current)
        clearInterval(loopRef.current)
    }
  },[progress]);

  return(
    <div
      className="fixed w-full overflow-scroll"
      style={{height: "calc(100% - 72px)"}}
    >
      <div
        className='bg-ui-panel w-10/12 max-w-7xl mx-auto my-6 rounded-lg p-6'
      >

        <div className="flex flex-col gap-2 mb-4">
          <H1>Typography</H1>
          <H1>H1. This is an H1 Heading</H1>
          <H2>H2. This is an H2 Heading</H2>
          <H3>H3. This is an H3 Heading</H3>
          <H4>H4. This is an H4 Heading</H4>
          <Label>Label. Is essentially same as H4</Label>
          <P>P. Is an normal Paragraph</P>
          <H5>H5. This is an H5 Heading</H5>
          <H6>H6. This is an H6 Heading</H6>
    
          <hr className="mt-2 mb-4"/>
          <H1>Components</H1>
          <H4>Buttons</H4>
          <div className="flex gap-2">
            <Button>Primary</Button>
            <Button variant="secondary">Secondary</Button>
            <Button className="bg-brand-tertiary hover:bg-brand-teriary-400 focus-visible:outline-brand-tertiary">
              Prelim Tertiary
            </Button>
            <Button disabled>Disabled</Button>
          </div>
        </div>

        <div className="flex flex-col gap-2 mb-4">
          <H4>ButtonLink</H4>
          <ButtonLink to="/">Back to /</ButtonLink>
        </div>

        <div className="flex flex-col gap-2 mb-4">
          <H4>Loading Dots</H4>
          <div className="flex gap-2">
            <div className="w-60 h-40 rounded-lg overflow-hidden">
              <LoadingDotsTyping />
            </div>
            <div className="w-60 h-40 rounded-lg overflow-hidden">
              <LoadingDotsBricks />
            </div>
          </div>
        </div>

        <div className="flex flex-col gap-2 mb-4">
          <H4>Loading Bar</H4>
          <div className="flex gap-2 items-center">
            <LoadingBar
              progress={progress}
              isShowing={progress !== 100}
              wrapperClassName="rounded-lg"
              message="this takes progress from parent"
            />
            <Button
              className="h-fit"
              onClick={()=>setProgress(0)}
            >
              Reset
            </Button>
          </div>
          <LoadingBar
            label="labeling the bar"
            message="displaying a message"
          />
          <LoadingBar
            label="useFakeTimer = 30000 (30secs)"
            useFakeTimer={30000}
          />
          <LoadingBar
            label="useFakeTimer = 3000 (3secs)"
            useFakeTimer={3000}
          />
        </div>
      </div>
    </div>
  );
};