import {
  DislikeOutlined,
  LikeOutlined,
  RightOutlined,
} from "@ant-design/icons";
import "./App.css";
import { Badge, Flex, Skeleton } from "antd";
import { useEffect, useRef, useState } from "react";
import { motion } from "framer-motion";

function SkeletonPlaceholder() {
  return (
    <>
      <Skeleton.Input active={true} size="large" block={true} />
      <br />
      <Skeleton.Input active={true} size="large" block={true} />
      <br />
      <Skeleton.Input active={true} size="large" block={true} />
      <br />
      <Skeleton.Input active={true} size="large" block={true} />
    </>
  );
}

function UseVoteLocalStorage() {
  const getVotes = () => {
    const votes = localStorage.getItem("shx-product-pipeline-votes");
    return votes === null ? [] : JSON.parse(votes);
  };

  const [storageVotes, setStorageVotes] = useState(getVotes());

  const saveVotes = (votes) => {
    setStorageVotes(votes);
    localStorage.setItem("shx-product-pipeline-votes", JSON.stringify(votes));
  };

  const vote = (name, up) => {
    const newVotes = [...storageVotes];

    const existingVoteIndex = newVotes.findIndex((vote) => vote.n === name);

    if (existingVoteIndex !== -1) {
      newVotes[existingVoteIndex].t = up === true ? 1 : 0;
    } else {
      newVotes.push({
        n: name,
        t: up === true ? 1 : 0,
      });
    }

    saveVotes(newVotes);
  };

  return {
    votes: storageVotes,
    vote: vote,
    setVotes: saveVotes,
  };
}

function Card({
  rankingPosition,
  name,
  productVariant,
  productCharacteristics,
  rightComponent,
}) {
  const MiddleComponent = () => {
    return (
      <Flex vertical style={{ textAlign: "left" }}>
        <span>{name}</span>
        {productVariant !== undefined &&
          productCharacteristics !== undefined && (
            <span style={{ fontSize: 16, color: "#535c68" }}>
              {productVariant}: {productCharacteristics}
            </span>
          )}
      </Flex>
    );
  };

  return (
    <div className="card">
      <Flex justify="space-between">
        {rankingPosition === undefined ? (
          <div style={{ paddingLeft: 10 }}>
            <MiddleComponent />
          </div>
        ) : (
          <>
            <Flex gap={4} style={{ textAlign: "left" }} align="center">
              <span style={{ color: "#787878", fontSize: 18 }}>
                #{rankingPosition}
              </span>
            </Flex>
            <div style={{ width: "100%", textAlign: "left", marginLeft: 10 }}>
              <MiddleComponent />
            </div>
          </>
        )}
        <Flex vertical justify="center">
          {rightComponent}
        </Flex>
      </Flex>
    </div>
  );
}

function VoteRequest(name, up) {
  fetch(
    `https://devdash.ex.umbach.dev/api/v1/productpipeline/vote?t=${
      up === true ? "u" : "d"
    }`,
    {
      method: "POST",
      headers: {
        "Content-Type": "application/json",
      },
      body: JSON.stringify({
        name: name,
      }),
    }
  ).catch(() => {});
}

function App() {
  const { votes, vote, setVotes } = UseVoteLocalStorage();
  const votesRef = useRef(votes);

  useEffect(() => {
    votesRef.current = votes;
  }, [votes]);

  const [products, setProducts] = useState({
    NewProducts: [],
    InWorkProducts: [],
    FutureProducts: [],
  });

  useEffect(() => {
    const fetchProducts = () =>
      fetch("https://devdash.ex.umbach.dev/api/v1/productpipeline")
        .then((res) => res.json())
        .then((data) => {
          setProducts(data);

          // remove votes for products which no longer in future products
          setVotes(
            votesRef.current.filter((v) =>
              data.FutureProducts.some((item) => item.Name === v.n)
            )
          );
        })
        .catch(() => {});

    fetchProducts();

    setInterval(() => fetchProducts(), 3000);
  }, []);

  return (
    <div className="app">
      <div className="container" style={{ paddingTop: 20 }}>
        <span className="subtitle">Immer auf dem aktuellen Stand sein</span>
        <h1 className="header">Neue Produkte</h1>

        <div className="cards-container" style={{ paddingBottom: 20 }}>
          <div className="cards">
            {products.NewProducts.length > 0 ? (
              <>
                {products.NewProducts.map((product, index) => (
                  <Card
                    key={index}
                    name={product.Name}
                    productVariant={product.Variant}
                    productCharacteristics={product.Characteristics}
                    rightComponent={
                      <RightOutlined
                        style={{ fontSize: 18 }}
                        onClick={() => window.open(product.Url)}
                      />
                    }
                  />
                ))}
              </>
            ) : (
              <SkeletonPlaceholder />
            )}
          </div>
        </div>

        <span className="subtitle">Was als nächstes kommt</span>
        <h1 className="header">Aktuell in Arbeit</h1>

        <div className="cards-container" style={{ paddingBottom: 20 }}>
          <div className="cards">
            {products.InWorkProducts.length > 0 ? (
              <>
                {products.InWorkProducts.map((product, index) => (
                  <Card
                    key={index}
                    name={product.Name}
                    productVariant={product.Variant}
                    productCharacteristics={product.Characteristics}
                    rightComponent={<Badge status="processing" />}
                  />
                ))}
              </>
            ) : (
              <SkeletonPlaceholder />
            )}
          </div>
        </div>

        <span className="subtitle">Jede Stimme zählt</span>
        <h1 className="header">Zukünftige Produkte</h1>

        <div className="cards-container">
          <div className="cards">
            {products.FutureProducts.length > 0 ? (
              <>
                {products.FutureProducts
                  /*.sort((a, b) =>
              a.Name.localeCompare(b.Name)
            )*/
                  .sort((a, b) => b.Votes - a.Votes)
                  .map((product, index) => (
                    <motion.div
                      key={product.Name}
                      layout
                      initial={{ opacity: 0 }}
                      animate={{ opacity: 1 }}
                      exit={{ opacity: 0 }}
                      transition={{ duration: 0.5 }}
                    >
                      <Card
                        name={product.Name}
                        rankingPosition={index + 1}
                        productVariant={product.Variant}
                        productCharacteristics={product.Characteristics}
                        rightComponent={
                          <div style={{ display: "flex", gap: 12 }}>
                            <DislikeOutlined
                              style={{
                                color:
                                  votes.findIndex(
                                    (vote) =>
                                      vote.n === product.Name && vote.t === 0
                                  ) > -1
                                    ? "red"
                                    : "#000",
                              }}
                              onClick={() => {
                                if (
                                  votes.findIndex(
                                    (vote) =>
                                      vote.n === product.Name && vote.t === 0
                                  ) === -1
                                ) {
                                  VoteRequest(product.Name, false);
                                  vote(product.Name, false);

                                  // simulate vote before request is made
                                  setProducts((products) => {
                                    const newArr = products.FutureProducts.map(
                                      (p) =>
                                        p.Name === product.Name
                                          ? { ...p, Votes: p.Votes - 1 }
                                          : p
                                    );

                                    return {
                                      ...products,
                                      FutureProducts: newArr,
                                    };
                                  });
                                }
                              }}
                            />
                            <span>{product.Votes}</span>
                            <LikeOutlined
                              style={{
                                color:
                                  votes.findIndex(
                                    (vote) =>
                                      vote.n === product.Name && vote.t === 1
                                  ) > -1
                                    ? "green"
                                    : "#000",
                              }}
                              onClick={() => {
                                if (
                                  votes.findIndex(
                                    (vote) =>
                                      vote.n === product.Name && vote.t === 1
                                  ) === -1
                                ) {
                                  VoteRequest(product.Name, true);
                                  vote(product.Name, true);

                                  // simulate vote before request is made
                                  setProducts((products) => {
                                    const newArr = products.FutureProducts.map(
                                      (p) =>
                                        p.Name === product.Name
                                          ? { ...p, Votes: p.Votes + 1 }
                                          : p
                                    );

                                    return {
                                      ...products,
                                      FutureProducts: newArr,
                                    };
                                  });
                                }
                              }}
                            />
                          </div>
                        }
                      />
                    </motion.div>
                  ))}
              </>
            ) : (
              <SkeletonPlaceholder />
            )}
          </div>
        </div>
      </div>
    </div>
  );
}

export default App;