app.js

const express = require("express");
const bodyParser = require("body-parser");
const fs = require("fs");
const path = require("path");
const cloneDeep = require("lodash.clonedeep");
const remove = require("lodash.remove");

const app = express();
const router = express.Router();

const root =
  process.env.NODE_ENV === "production"
    ? path.join(__dirname, "..")
    : __dirname;

app.use(bodyParser.json());
app.use("/static", express.static(path.join(root, "static")));

app.get("/", (_req, res) => {
  return res.sendFile("static/index.html", { root });
});

app.use("/api/v1/", router);

router.get("/docs", (_req, res) => {
  return res.sendFile("static/ekswagger-tarot-api-1.3-resolved.json", { root });
});

router.use((_req, res, next) => {
  res.locals.rawData = JSON.parse(
    fs.readFileSync("static/card_data.json", "utf8")
  );
  return next();
});

router.use((_req, res, next) => {
  res.header("Access-Control-Allow-Origin", "*");
  res.header("Access-Control-Allow-Credentials", true);
  res.header("Access-Control-Allow-Methods", "GET,PUT,POST,DELETE,OPTIONS");
  res.header(
    "Access-Control-Allow-Headers",
    "Origin,X-Requested-With,Content-Type,Accept,content-type,application/json"
  );
  return next();
});

router.get("/", (_req, res) => {
  return res.redirect("/api/v1/cards");
});

router.get("/cards", (_req, res) => {
  const { cards } = res.locals.rawData;
  return res.json({ nhits: cards.length, cards }).status(200);
});

router.get("/cards/search", (req, res) => {
  const { cards } = res.locals.rawData;
  console.log(`req.query:`, req.query);
  if (!req.query || Object.keys(req.query).length === 0)
    return res.redirect("/api/v1/cards");
  let filteredCards = [];
  for (let k in req.query) {
    if (k !== "q") {
      if (k === "meaning") {
        filteredCards = cards.filter((c) =>
          [c.meaning_up, c.meaning_rev]
            .join()
            .toLowerCase()
            .includes(req.query[k].toLowerCase())
        );
      } else {
        filteredCards = cards.filter(
          (c) => c[k] && c[k].toLowerCase().includes(req.query[k].toLowerCase())
        );
      }
    } else if (k === "q") {
      filteredCards = cards.filter((c) =>
        Object.values(c)
          .join()
          .toLowerCase()
          .includes(req.query[k].toLowerCase())
      );
    }
  }
  return res
    .json({ nhits: filteredCards.length, cards: filteredCards })
    .status(200);
});

router.get("/cards/random", (req, res) => {
  const { cards } = res.locals.rawData;
  const n = req.query.n > 0 && req.query.n < 79 ? req.query.n : 78;
  let cardPool = cloneDeep(cards);
  let returnCards = [];
  for (let i = 0; i < n; i++) {
    let id = Math.floor(Math.random() * (78 - i));
    let card = cardPool[id];
    returnCards.push(card);
    remove(cardPool, (c) => c.name_short === card.name_short);
  }
  return res.json({ nhits: returnCards.length, cards: returnCards });
});

router.get("/cards/:id", (req, res, next) => {
  const { cards } = res.locals.rawData;
  const card = cards.find((c) => c.name_short === req.params.id);
  if (typeof card === "undefined") return next();
  return res.json({ nhits: 1, card }).status(200);
});

router.get("/cards/suits/:suit", (req, res, next) => {
  const { cards } = res.locals.rawData;
  const cardsOfSuit = cards.filter((c) => c.suit === req.params.suit);
  if (!cardsOfSuit.length) return next();
  return res
    .json({ nhits: cardsOfSuit.length, cards: cardsOfSuit })
    .status(200);
});

router.get("/cards/courts", (_req, res) => {
  const { cards } = res.locals.rawData;
  const courtCards = cards.filter((c) =>
    ["queen", "king", "page", "knight"].includes(c.value)
  );
  return res.json({ nhits: courtCards.length, cards: courtCards }).status(200);
});

router.get("/cards/courts/:court", (req, res, next) => {
  const { cards } = res.locals.rawData;
  const { court } = req.params;
  const len = court.length;
  if (len < 4) return next();
  const courtSg = court[len - 1] === "s" ? court.slice(0, len - 1) : court;
  const cardsOfCourt = cards.filter((c) => c.value === courtSg);
  if (!cardsOfCourt.length) return next();
  return res
    .json({ nhits: cardsOfCourt.length, cards: cardsOfCourt })
    .status(200);
});

router.use((_req, _res, next) => {
  var err = new Error("Not Found");
  err.status = 404;
  next(err);
});

router.use((err, _req, res) => {
  res.status(err.status || 500);
  res.json({ error: { status: err.status, message: err.message } });
});

const port = process.env.PORT || 8000;

app.listen(port, () => {
  console.log("RWS API Server now running on port", port);
});