completed assignment

.eslintrc.json

@@ -1,8 +1,8 @@
 {
     "env": {
+        "browser": true,
         "commonjs": true,
-        "es2021": true,
-        "node": true
+        "es2021": true
     },
     "extends": "eslint:recommended",
     "parserOptions": {

README.md

@@ -55,11 +55,11 @@ Before writing any code, write out all desired tables in the data model and dete
 
 **Try to keep your design to FOUR tables**. With three tables it will be hard to meet all requirements, and more than 5 is likely overkill.
 
-#### Project Scaffolding
+#### [X] Project Scaffolding
 
 - Put an Express application together starting with the `package.json` and a `knexfile.js`. Use existing projects as reference if needed.
 
-#### Migrations and Seeds
+#### [X] Migrations and Seeds
 
 - Write a migration file that creates all tables necessary to model this data
 - Write seed files to populate the tables with test data. **Hint**: Keep your recipes simple or this step could become extremely time consuming.

api/recipes/model.js

@@ -0,0 +1,133 @@
+const db = require('../../data/db-config');
+
+async function getRecipeById(recipe_id) {
+    const recipeRows = await db('recipes as r')
+        .leftJoin('steps as s', 'r.recipe_id', '=', 's.recipe_id')
+        .leftJoin('step_ingredients as si', 'si.step_id', '=', 's.step_id')
+        .leftJoin('ingredients as i', 'i.ingredient_id', '=', 'si.ingredient_id')
+        .select(
+            'r.recipe_id',
+            'r.recipe_name',
+            'r.created_at',
+            's.step_id',
+            's.step_number',
+            's.step_instructions',
+            'i.ingredient_id',
+            'i.ingredient_name',
+            'si.quantity'
+        )
+        .orderBy('s.step_number')
+        .where('s.recipe_id', recipe_id)
+
+        //console.log(recipeRows);
+
+        const recipes = {
+          recipe_id: recipeRows[0].recipe_id,
+          recipe_name: recipeRows[0].recipe_name,
+          steps: recipeRows.reduce((acc,row) => {
+            // new step without any ingredients
+            if(!row.ingredient_id || row.ingredient_id == null){
+              return acc.concat({
+                step_id: row.step_id,
+                step_number: row.step_number,
+                step_instructions: row.step_instructions,
+              })
+            }
+            // new step with a single ingredient
+            if(row.ingredient_id && !acc.find(step=>step.step_id === row.step_id)){
+              return acc.concat({
+                step_id: row.step_id,
+                step_number: row.step_number,
+                step_instructions: row.step_instructions,
+                ingredients: [
+                  {
+                    ingredient_id: row.ingredient_id,
+                    ingredient_name: row.ingredient_name,
+                    quantity: row.quantity
+                  }
+                ]
+              })
+            }
+            // new step with multiple ingredients (repeat step, different ingredient)
+            const currentStep = acc.find(step=>step.step_id === row.step_id)
+            currentStep.ingredients.push({
+              ingredient_id: row.ingredient_id,
+              ingredient_name: row.ingredient_name,
+              quantity: row.quantity
+            })
+
+            return acc;
+          }, [])
+        }
+
+        return recipes
+
+    // let result = rows.reduce((acc, row) => {
+    //   //console.log(row);
+    //     if (row.step_number) {
+    //         acc.steps.push({ step_id: row.step_id, step_number: row.step_number, step_instructions: row.step_instructions, ingredients: [] })
+
+    //         // if (rows.steps.ingredients) {
+    //         //     acc.steps.ingredients.push({ ingredient_id: row.ingredient_id, ingredient_name: row.ingredient_name, quantity: row.quantity })
+    //         // }
+    //     }
+    //     //console.log(acc);
+    //     return acc;
+    // }, {
+    //     recipe_id: rows[0].recipe_id,
+    //     recipe_name: rows[0].recipe_name,
+    //     created_at: rows[0].created_at,
+    //     steps: []
+    // })
+
+    // //console.log(result);
+    // return result;
+}
+
+/**
+ * {
+  "recipe_id" : 1,
+  "recipe_name": "Spaghetti Bolognese",
+  "created_at": "2021-01-01 08:23:19.120",
+  "steps": [
+    {
+      "step_id": 11,
+      "step_number": 1,
+      "step_instructions": "Put a large saucepan on a medium heat",
+      "ingredients": []
+    },
+    {
+      "step_id": 12,
+      "step_number": 2,
+      "step_instructions": "Add 1 tbsp olive oil",
+      "ingredients": [
+        { "ingredient_id": 27, "ingredient_name": "olive oil", "quantity": 0.014 }
+      ]
+    },
+  ]
+}
+ * 
+ * 
+ * 
+ * SELECT 
+r.recipe_id
+,r.recipe_name
+,r.created_at
+,s.step_id
+,s.step_number
+,s.step_instructions
+,si.ingredient_id
+,i.ingredient_name
+,si.quantity
+FROM recipes r
+LEFT JOIN steps s
+ON r.recipe_id = s.recipe_id
+INNER JOIN step_ingredients si
+ON s.step_id = si.step_id
+LEFT JOIN ingredients i
+ON si.ingredient_id = i.ingredient_id
+ */
+
+module.exports = {
+    getRecipeById
+}

api/recipes/router.js

@@ -0,0 +1,16 @@
+const express = require('express')
+const Recipe = require('./model');
+
+const router = express.Router()
+
+router.get('/:recipe_id',(req,res,next)=> {
+    console.log('you have reached the router');
+    const { recipe_id } = req.params;
+
+    Recipe.getRecipeById(recipe_id)
+        .then(results => {
+            res.json(results);
+        }) .catch(next);
+});
+
+module.exports = router;

api/server.js

@@ -0,0 +1,12 @@
+const express = require('express');
+const RecipeRouter = require('./recipes/router')
+
+const server = express()
+
+server.use(express.json())
+server.use('/api/recipes', RecipeRouter);
+server.use((err,req,res,next) => { // eslint-disable-line
+    res.status(err.status || 500).json({ message: err.message})
+})
+
+module.exports = server

data/db-config.js

@@ -0,0 +1,5 @@
+const knex = require('knex');
+
+const config = require('../knexfile.js');
+
+module.exports = knex(config.development);

data/migrations/20231224002017_first_migration.js

@@ -0,0 +1,60 @@
+/**
+ * @param { import("knex").Knex } knex
+ * @returns { Promise<void> }
+ */
+
+exports.up = async function(knex) {
+    await knex.schema
+        .createTable('recipes',table=>{
+            table.increments('recipe_id')
+            table.string('recipe_name')
+            table.timestamp('created_at')
+                .defaultTo(knex.fn.now())
+        })
+        .createTable('steps',table=>{
+            table.increments('step_id')
+            table.integer('step_number').unsigned()
+            table.string('step_instructions')
+            table.integer('recipe_id')
+                .unsigned()
+                .notNullable()
+                .references('recipe_id')
+                .inTable('recipes')
+                .onDelete('RESTRICT')
+                .onUpdate('RESTRICT')
+        })
+        .createTable('ingredients',table=>{
+            table.increments('ingredient_id')
+            table.string('ingredient_name')
+        })
+        .createTable('step_ingredients',table=>{
+            table.increments('step_ingredient_id')
+            table.integer('step_id')
+                .unsigned()
+                .notNullable()
+                .references('step_id')
+                .inTable('steps')
+                .onDelete('RESTRICT')
+                .onUpdate('RESTRICT')
+            table.integer('ingredient_id')
+                .unsigned()
+                .notNullable()
+                .references('ingredient_id')
+                .inTable('ingredients')
+                .onDelete('RESTRICT')
+                .onUpdate('RESTRICT')
+            table.integer('quantity')
+        })
+};
+
+/**
+ * @param { import("knex").Knex } knex
+ * @returns { Promise<void> }
+ */
+exports.down = async function(knex) {
+  await knex.schema
+    .dropTableIfExists('step_ingredients')
+    .dropTableIfExists('ingredients')
+    .dropTableIfExists('steps')
+    .dropTableIfExists('recipes')
+};

data/seeds/00-cleanup.js

@@ -0,0 +1,9 @@
+const cleaner = require('knex-cleaner')
+
+exports.seed =  function(knex) {
+  // Deletes ALL existing entries
+  return(cleaner.clean(knex, {
+    mode: 'truncate', // resets ids
+    ignoreTables: ['knex_migrations','knex_migrations_lock']
+  }))
+};

data/seeds/01-recipes.js

@@ -0,0 +1,9 @@
+
+exports.seed = function(knex, Promise) {
+  // Deletes ALL existing entries
+  return knex('recipes').insert([
+    {recipe_name: 'Potatoes au Gratin'},
+    {recipe_name: 'Roasted Chicken'},
+    {recipe_name: 'Fried Onions'}
+  ]);
+};

data/seeds/02-steps.js

@@ -0,0 +1,12 @@
+exports.seed = function(knex, Promise) {
+  // Deletes ALL existing entries
+  return knex('steps').insert([
+    {recipe_id: 1, step_number: 1, step_instructions: 'boil potatoes'},
+    {recipe_id: 1, step_number: 2, step_instructions: 'cover in cheese'},
+    {recipe_id: 2, step_number: 1, step_instructions: 'catch chicken'},
+    {recipe_id: 2, step_number: 2, step_instructions: 'kill chicken'},
+    {recipe_id: 2, step_number: 3, step_instructions: 'cook chicken'},
+    {recipe_id: 3, step_number: 1, step_instructions: 'slice onions'},
+    {recipe_id: 3, step_number: 2, step_instructions: 'fry onions'},
+  ]);
+};

data/seeds/03-ingredients.js

@@ -0,0 +1,10 @@
+exports.seed = function(knex, Promise) {
+  // Deletes ALL existing entries
+  return knex('ingredients').insert([
+    {ingredient_name: 'potatoes'},
+    {ingredient_name: 'cheese'},
+    {ingredient_name: 'chicken'},
+    {ingredient_name: 'salt'},
+    {ingredient_name: 'onions'},
+  ]);
+};

data/seeds/04-step-ingredients.js

@@ -0,0 +1,12 @@
+exports.seed = function(knex, Promise) {
+  // Deletes ALL existing entries
+  return knex('step_ingredients').insert([
+    {step_id: 1, ingredient_id: 1, quantity: 12},
+    {step_id: 1, ingredient_id: 4, quantity: 2},
+    {step_id: 2, ingredient_id: 2, quantity: 9},
+    {step_id: 3, ingredient_id: 3, quantity: 1},
+    {step_id: 5, ingredient_id: 4, quantity: 2},
+    {step_id: 6, ingredient_id: 5, quantity: 6},
+    {step_id: 7, ingredient_id: 4, quantity: 2},
+  ]);
+};

index.js

@@ -0,0 +1,7 @@
+const server = require('./api/server')
+
+const PORT = process.env.PORT || 9000
+
+server.listen(PORT, () => {
+    console.log(`listening on port ${PORT}...`)
+})

knexfile.js

@@ -0,0 +1,23 @@
+
+module.exports = {
+
+  development: {
+    client: 'sqlite3',
+    useNullAsDefault: true, // needed for sqlite
+    connection: {
+      filename: './data/recipes.db3'
+    },
+    migrations: {
+      directory: './data/migrations'
+    },
+    seeds: {
+      directory: './data/seeds'
+    },
+    pool: {
+      afterCreate: (conn, done) => {
+        // runs after a connection is made to the sqlite engine
+        conn.run('PRAGMA foreign_keys = ON', done); // turn off FK enforcement
+      }
+    }
+  },
+};