server.js

let fs = require("fs");
let recipes = JSON.parse(fs.readFileSync("JSON/Recipes.json"));

let express = require("express");
let bodyParser = require("body-parser");
let cors = require("cors");
let app = express();
let server = app.listen(5000, listening);

function listening() {
  console.log("Listening...");
}
app.use(express.static("website"));
app.use(
  bodyParser.urlencoded({
    extended: false
  })
);
app.use(bodyParser.json());
let jsonParser = bodyParser.json();
app.use(cors());

app.get("/all", getAll);

function getAll(request, response) {
  let data = {
    recipes: recipes.recipes
  };
  response.send(data);
}

app.get("/all/recipes", allRecs);

function allRecs(request, response) {
  let recs = [];
  for (let i = 0; i < recipes.recipes.length; i++)
    recs.push(recipes.recipes[i].name);
  recs.sort();
  reply = {
    status: "complete",
    recipe: recs
  };
  response.send(reply);
}
app.get("/all/ingredients", allIngs);

function allIngs(request, response) {
  let ings = [];
  let filtIngs = [];
  for (let i = 0; i < recipes.recipes.length; i++) {
    for (let j = 0; j < recipes.recipes[i].ingredients.length; j++) {
      ings.push(recipes.recipes[i].ingredients[j].name);
    }
  }
  ings.sort();
  for (k = 0; k < ings.length; k++) {
    if (ings[k] !== ings[k + 1]) {
      filtIngs.push(ings[k]);
    }
  }
  reply = {
    status: "complete",
    ingredients: filtIngs
  };
  response.send(reply);
}
app.get("/all/units", allUnits);

function allUnits(request, response) {
  let units = [];
  let filtUnits = [];
  for (let i = 0; i < recipes.recipes.length; i++) {
    for (let j = 0; j < recipes.recipes[i].ingredients.length; j++) {
      units.push(recipes.recipes[i].ingredients[j].unit);
    }
  }
  units.sort();
  for (k = 0; k < units.length; k++) {
    if (units[k] !== units[k + 1]) {
      filtUnits.push(units[k]);
    }
  }
  reply = {
    status: "complete",
    units: filtUnits
  };
  response.send(reply);
}
app.post("/add/", jsonParser, addRecipe);

function addRecipe(req, res) {
  data = req.body;
  let dup = false;
  for (i = 0; i < recipes.recipes.length; i++)
    if (recipes.recipes[i].name === data.name) dup = true;
  if (!dup) {
    ingredients = [];
    for (p in data) {
      ing = {};
      if (p !== "name") {
        ing.name = data[p][0];
        ing.qty = data[p][1];
        ing.unit = data[p][2];
        ingredients.push(ing);
      }
    }
    recipes.recipes.push({
      name: data.name,
      ingredients: ingredients
    });
    let reply = {
      msg: "Success",
      name: data.name
    };
    fs.writeFile("JSON/Recipes.json", JSON.stringify(recipes, null, 2), err => {
      if (err) throw err;
    });
    res.send(reply);
  } else {
    reply = {
      msg: "Duplicate Entry",
      name: data.name
    };
    console.log(reply);
    res.send(JSON.stringify(reply));
  }
}

app.get("/search/:recipe", searchRecipes);

function searchRecipes(request, response) {
  let recipe = request.params.recipe;
  let reply;
  let ings = [];

  for (let i = 0; i < recipes.recipes.length; i++) {
    if (recipes.recipes[i].name === recipe) {
      for (let j = 0; j < recipes.recipes[i].ingredients.length; j++) {
        ings.push([
          recipes.recipes[i].ingredients[j].name,
          recipes.recipes[i].ingredients[j].qty,
          recipes.recipes[i].ingredients[j].unit
        ]);
      }
      reply = {
        status: "found",
        recipe: recipe,
        ingredients: ings
      };
      break;
    } else {
      reply = {
        status: "Not Found",
        recipe: "",
        ingredients: []
      };
    }
  }
  response.send(reply);
}