import { useState } from "react";
import chartXkcd from "chart.xkcd";

const projectTypes = ["model", "dataset", "space"];

function transformLikesData(likesData) {
  // Step 1
  likesData.sort((a, b) => new Date(a.likedAt) - new Date(b.likedAt));

  // Step 2
  const cumulativeLikes = {};
  let cumulativeCount = 0;

  // Step 3
  likesData.forEach(like => {
    const date = like.likedAt
    cumulativeCount++;
    cumulativeLikes[date] = cumulativeCount;
  });

  // Step 4
  const transformedData = Object.keys(cumulativeLikes).map(date => ({
    x: date,
    y: cumulativeLikes[date].toString()
  }));

  return transformedData;
}

const datasets = [];
function App() {
  const [projectType, setProjectType] = useState("models");
  const [projectName, setProjectName] = useState("");
  const [hasGraph, setHasGraph] = useState(false);
  const [isLoading, setIsLoading] = useState(false);
  // const [datasets, setDatasets] = useState([]);

  const onSubmit = async () => {
    setIsLoading(true)
    const svg = document.querySelector('.line-chart')

    const res = await fetch(`https://huggingface.co/api/${projectType}/${projectName}/likers?expand[]=likeAt`)

    /**
     * Format:
     * [{"user": "timqian", "likedAt": "2021-07-01T00:00:00.000Z"}, {"user": "yy", "likedAt": "2021-07-02T00:00:00.000Z"}]
     */
    const likers = await res.json()


    let likeHistory = transformLikesData(likers)

    if (likeHistory.length > 40) {
      // sample 20 points
      const sampledLikeHistory = []
      const step = Math.floor(likeHistory.length / 20)
      for (let i = 0; i < likeHistory.length; i += step) {
        sampledLikeHistory.push(likeHistory[i])
      }
      // Add the last point if it's not included
      if (sampledLikeHistory[sampledLikeHistory.length - 1].x !== likeHistory[likeHistory.length - 1].x) {
        sampledLikeHistory.push(likeHistory[likeHistory.length - 1])
      }
      likeHistory = sampledLikeHistory
    }

    // if likeHistory is empty, show error message
    if (likeHistory.length === 0) {
      setIsLoading(false)
      alert("No like history found")
      return
    }

    datasets.push({
      label: projectName,
      data: likeHistory,
    })

    // draw chart in next tick
    // setTimeout(() => {
    new chartXkcd.XY(svg, {
      title: 'Like History',
      xLabel: 'Time',
      yLabel: 'Likes',
      data: {
        datasets,
      },
      options: {
        // unxkcdify: true,
        xTickCount: 3,
        yTickCount: 4,
        legendPosition: chartXkcd.config.positionType.upLeft,
        showLine: true,
        timeFormat: 'MM/DD/YYYY',
        dotSize: 0.5,
        dataColors: [
          "#FBBF24", // Warm Yellow
          "#60A5FA", // Light Blue
          "#14B8A6", // Teal
          "#A78BFA", // Soft Purple
          "#FF8C00", // Orange
          "#64748B", // Slate Gray
          "#FB7185", // Coral Pink
          "#6EE7B7", // Mint Green
          "#2563EB", // Deep Blue
          "#374151"  // Charcoal
        ]
      },
    });
    setHasGraph(true)
    setIsLoading(false)
    setProjectName("")
    // }, 0.2)
  }
  return (
    <div className="mx-auto max-w-7xl px-4 sm:px-6 lg:px-8 py-16">
      <div className="mx-auto max-w-3xl">
        <h1 className="text-sm font-light right-0 text-right text-gray-600">
          View the like history of a project on <span className="font-semibold">huggingface</span> <span className="text-lg">🤗</span>
        </h1>
        <div>
          <div className="relative mt-2 rounded-md shadow-sm">
            <div className="absolute inset-y-0 left-0 flex items-center">
              <label htmlFor="country" className="sr-only">
                Country
              </label>
              <select
                id="country"
                name="country"
                autoComplete="country"
                className="h-full rounded-md border-0 bg-transparent py-0 pl-3 pr-7 text-gray-500 focus:outline-none focus:ring-2 focus:ring-inset focus:ring-indigo-600 sm:text-sm"
                onChange={(e) => setProjectType(e.target.value)}
              >
                <option value="models">Model</option>
                <option value="datasets">Dataset</option>
                <option value="spaces">Space</option>
              </select>
            </div>
            <input
              type="text"
              name="phone-number"
              id="phone-number"
              className="block w-full rounded-md border-0 py-1.5 pl-24 text-gray-900 ring-1 ring-inset ring-gray-300 placeholder:text-gray-400 focus:ring-2 focus:ring-inset focus:ring-indigo-600 sm:text-sm sm:leading-6"
              placeholder="openai/whisper-large"
              value={projectName}
              onChange={(e) => setProjectName(e.target.value.trim())}
              onFocus={(e) => e.target.select()}
              onKeyDown={async (e) => {
                if (e.key === "Enter") {
                  try {
                    await onSubmit();
                  } catch (err) {
                    setIsLoading(false);
                    alert(`No like history found for ${projectName}, please check the name and try again`);
                  }
                }
              }}
              disabled={isLoading}
            />

            {
              isLoading &&
              <div className="absolute inset-y-0 right-0 flex items-center">
                <svg className="animate-spin h-5 w-5 mr-3 text-gray-400" viewBox="0 0 24 24">
                  <circle className="opacity-25" cx="12" cy="12" r="10" stroke="currentColor" strokeWidth="4"></circle>
                  <path
                    className="opacity-75"
                    fill="currentColor"
                    d="M4 12a8 8 0 018-8V0C5.373 0 0 5.373 0 12h4z">
                  </path>
                </svg>
              </div>
            }
          </div>
        </div>



        <div className="mt-16 relative min-w-sm">
          <svg className="line-chart"></svg>
          {
            hasGraph &&
            <span className="text-slate-500 absolute bottom-0 right-8" style={{ fontFamily: "xkcd" }}>🤗 like-history.ai</span>
          }
        </div>

        <a className={`${!hasGraph ? "mt-64" : "mt-12"} flex gap-x-2 text-slate-600 justify-end items-center text-xl`} href="https://chromewebstore.google.com/detail/like-history/ockfibaidgopelphgdgcnfijdnhnmpek">
          <img className="w-6 inline" src="/extension.svg" /> Install the chrome extension
        </a>
      </div>
    </div>
  );
}

export default App;