579 lines
22 KiB
JavaScript
579 lines
22 KiB
JavaScript
'use strict'
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// Router
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const express = require('express')
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let router = express.Router()
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// Connection
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const connection = require('../database/connection')
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const db = connection.db
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// ID validation
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const regexInt = RegExp(/^[1-9]\d*$/);
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// Model validation
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const Validator = require('jsonschema').Validator
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const v = new Validator()
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const Spell = require("../models/Spell")
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v.addSchema(Spell, "/SpellModel")
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// Error handling
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const { HttpError } = require('../models/Errors')
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// ROUTES
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// GET ALL ------------------
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const getSpells = () => {
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return new Promise((resolve, reject) => {
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let query = "SELECT DISTINCT * FROM spell"
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db.query(query, async (err, result) => {
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if (err) {
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reject(new HttpError(500, 'Error: Database error'))
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} else if (result.length == 0) {
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reject(new HttpError(404, 'Error: No spells were found'))
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}
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// Loops over the results to fetch the associated tables
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for (let i = 0; i < result.length; i++) {
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try {
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result[i] = await buildSpell(result[i])
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} catch (err) {
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reject(err)
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}
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}
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resolve(result)
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})
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})
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.catch(err => {
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throw err
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})
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}
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router.get('/', async (req, res) => {
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getSpells()
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.then(v => {
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res.setHeader('Content-Type', 'application/json;charset=utf-8')
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res.end(JSON.stringify(v))
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})
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.catch(err => {
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res.status(err.code).send(err.message)
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})
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})
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// GET ONE ------------------
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const getSpell = (id) => {
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return new Promise((resolve, reject) => {
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let query = "SELECT * FROM spell WHERE id = " + db.escape(id)
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db.query(query, async (err, result) => {
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if (err) {
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reject(new HttpError(500, 'Error: Database error'))
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}
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try {
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result = buildSpell(result[0])
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resolve(result)
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} catch (err) {
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reject(err)
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}
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})
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})
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.catch(err => {
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throw err
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})
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}
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router.get('/:id/', async (req, res) => {
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getSpell(req.params.id)
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.then(v => {
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res.setHeader('Content-Type', 'application/json;charset=utf-8')
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res.end(JSON.stringify(v))
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})
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.catch(err => {
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res.status(err.code).send(err.message)
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})
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})
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// CREATE ONE ------------------
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const addSpell = (s) => {
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return new Promise(async (resolve, reject) => {
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// Checks if body exists and if the model fits, and throws errors if it doesn't
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if (isEmptyObject(s)) {
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reject(new HttpError(403, "Error: Spell cannot be nothing !"))
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} else if (!v.validate(s, Spell).valid) {
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reject(new HttpError(403, "Error: Schema is not valid - " + v.validate(s, Spell).errors))
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}
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let query =
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'INSERT INTO spell (name, description'
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if (s.level != undefined) { query += ', level' }
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if (s.charge != undefined) { query += ', charge' }
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if (s.cost != undefined) { query += ', cost' }
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if (s.is_ritual != undefined) { query += ', is_ritual' }
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query += `) VALUES (${db.escape(s.name)}, ${db.escape(s.description)}`
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if (s.level != undefined) { query += `, ${s.level}` }
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if (s.charge != undefined) { query += `, ${s.charge}` }
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if (s.cost != undefined) { query += `, ${db.escape(s.cost)}` }
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if (s.is_ritual != undefined) { query += `, ${s.is_ritual}` }
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query += ')'
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db.query(query, async (err, result) => {
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if (err) {
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reject(new HttpError(500, 'Error: Database error'))
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}
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console.log(`Inserted "${s.name}" with ID ${result.insertId}, affecting ${result.affectedRows} row(s)`)
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const new_spell_id = result.insertId
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let addSchoolsData = () => {
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return new Promise((resolve, reject) => {
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if (s.schools != undefined) {
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if (s.schools.length > 0) {
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for (let i = 0; i < s.schools.length; i++) {
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if (!regexInt.test(s.schools[i].id)) {
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reject(new HttpError(403, 'Error: Query error - School ID should be an integer !'))
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}
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let insert_schools_query = `INSERT INTO spells_schools (id_spell, id_school) VALUES (${new_spell_id}, ${s.schools[i].id})`
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db.query(insert_schools_query, async (err, result) => {
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if (err) {
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reject(new HttpError(500, 'Error: Database error - No schools matching this ID'))
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} else {
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console.log(`Associated school ID ${s.schools[i].id} to spell ID ${new_spell_id}, affecting ${result.affectedRows} row(s)`)
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resolve()
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}
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})
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}
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}
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} else {
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resolve()
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}
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})
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}
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let addVariablesData = () => {
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return new Promise((resolve, reject) => {
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if (s.variables != undefined) {
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if (s.variables.length > 0) {
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for (let i = 0; i < s.variables.length; i++) {
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if (!regexInt.test(s.variables[i].id)) {
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reject(new HttpError(403, 'Error: Query error - Variable ID should be an integer !'))
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}
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let insert_variables_query = `INSERT INTO spells_variables (id_spell, id_variable) VALUES (${new_spell_id}, ${s.variables[i].id})`
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db.query(insert_variables_query, async (err, result) => {
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if (err) {
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reject(new HttpError(500, 'Error: Database error - No variables matching this ID'))
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} else {
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console.log(`Associated variable ID ${s.variables[i].id} to spell ID ${new_spell_id}, affecting ${result.affectedRows} row(s)`)
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resolve()
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}
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})
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}
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}
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} else {
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resolve()
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}
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})
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}
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let addIngredientsData = () => {
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return new Promise((resolve, reject) => {
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if (s.ingredients != undefined) {
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if (s.ingredients.length > 0) {
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for (let i = 0; i < s.ingredients.length; i++) {
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if (!regexInt.test(s.ingredients[i].id)) {
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reject(new HttpError(403, 'Error: Query error - Ingredient ID should be an integer !'))
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}
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let insert_ingredients_query = `INSERT INTO spells_ingredients (id_spell, id_ingredient) VALUES (${new_spell_id}, ${s.ingredients[i].id})`
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db.query(insert_ingredients_query, async (err, result) => {
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if (err) {
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reject(new HttpError(500, 'Error: Database error - No ingredients matching this ID'))
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} else {
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console.log(`Associated ingredient ID ${s.ingredients[i].id} to spell ID ${new_spell_id}, affecting ${result.affectedRows} row(s)`)
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resolve()
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}
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})
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}
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}
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} else {
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resolve()
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}
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})
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}
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Promise.all([addSchoolsData(), addVariablesData(), addIngredientsData()])
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.then(v => {
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resolve(getSpell(new_spell_id))
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})
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.catch(err => {
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reject(err)
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})
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})
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}).catch(err => {
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throw err
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})
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}
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router.post('/', async (req, res) => {
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addSpell(req.body)
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.then(v => {
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console.log(v)
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res.setHeader('Content-Type', 'application/json;charset=utf-8')
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res.send(JSON.stringify(v))
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})
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.catch(err => {
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res.status(err.code).send(err.message)
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})
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})
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// UPDATE ONE ------------------
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const updateSpell = (s, id) => {
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return new Promise( async (resolve, reject) => {
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// Check if spell exists
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let old_spell = await getSpell(id)
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.catch(err => {
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reject(err)
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})
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// Checks if body exists and if the model fits, and throws errors if it doesn't
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if (isEmptyObject(s)) {
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reject(new HttpError(403, "Error: Spell cannot be nothing !"))
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} else if (!v.validate(s, Spell).valid) {
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reject(new HttpError(403, "Error: Schema is not valid - " + v.validate(s, Spell).errors))
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}
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let query =
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'UPDATE spell SET '
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if (s.name != undefined) { query += `name = "${s.name}" ` }
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if (s.description != undefined) { query += `, description = "${s.description}" ` }
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if (s.level != undefined) { query += `, level = ${s.level} ` }
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if (s.charge != undefined) { query += `, charge = ${s.charge} ` }
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if (s.cost != undefined) { query += `, cost = "${s.cost}" ` }
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if (s.is_ritual != undefined) { query += `, is_ritual = ${s.is_ritual} ` }
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query += ` WHERE id = ${db.escape(id)}`
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db.query(query, async (err, result) => {
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if (err) {
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reject(new HttpError(500, 'Error: Database error - Spell update failed'))
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}
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console.log(`Updated "${s.name}" on ID ${old_spell.id}, affecting ${result.affectedRows} row(s)`)
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let updateSchoolsData = () => {
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return new Promise((resolve, reject) => {
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if (s.schools != undefined) {
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if (s.schools.length > 0) {
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let delete_schools_query =
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`DELETE FROM spells_schools WHERE id_spell = ${old_spell.id}`
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db.query(delete_schools_query, async (err, result) => {
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if (err) {
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reject(new HttpError(500, 'Error: Database error - Spell school deletion failed.'))
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}
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})
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for (let i = 0; i < s.schools.length; i++) {
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if (!regexInt.test(s.schools[i].id)) {
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reject(new HttpError(403, 'Error: Query error - School ID should be an integer !'))
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} else {}
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let update_schools_query = `INSERT INTO spells_schools (id_spell, id_school) VALUES (${old_spell.id}, ${s.schools[i].id})`
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db.query(update_schools_query, async (err, result) => {
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if (err) {
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reject(new HttpError(500, 'Error: Database error - No schools matching this ID'))
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} else {
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console.log(`Updated association "${s.schools[i].name}" to spell ID ${old_spell.id}`)
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resolve()
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}
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})
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}
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}
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} else {
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resolve()
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}
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})
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}
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let updateVariablesData = () => {
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return new Promise((resolve, reject) => {
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if (s.variables != undefined) {
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if (s.variables.length > 0) {
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let delete_variables_query =
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`DELETE FROM spells_variables WHERE id_spell = ${old_spell.id}`
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db.query(delete_variables_query, async (err, result) => {
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if (err) {
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reject(new HttpError(500, 'Error: Database error - Spell variable deletion failed.'))
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}
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})
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for (let i = 0; i < s.variables.length; i++) {
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if (!regexInt.test(s.variables[i].id)) {
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reject(new HttpError(403, 'Error: Query error - Variable ID should be an integer !'))
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}
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let update_variables_query = `INSERT INTO spells_variables (id_spell, id_variable) VALUES (${old_spell.id}, ${s.variables[i].id})`
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db.query(update_variables_query, async (err, result) => {
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if (err) {
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reject(new HttpError(500, 'Error: Database error - No variables matching this ID'))
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} else {
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console.log(`Updated association "${s.variables[i].name}" to spell ID ${old_spell.id}`)
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resolve()
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}
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})
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}
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}
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} else {
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resolve()
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}
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})
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}
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let updateIngredientsData = () => {
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return new Promise((resolve, reject) => {
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if (s.ingredients != undefined) {
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if (s.ingredients.length > 0) {
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let delete_ingredients_query =
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`DELETE FROM spells_ingredients WHERE id_spell = ${old_spell.id}`
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db.query(delete_ingredients_query, async (err, result) => {
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if (err) {
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reject(new HttpError(500, 'Error: Database error - Spell ingredients deletion failed.'))
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}
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console.log(result)
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})
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// Loops over ingredients query
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for (let i = 0; i < s.ingredients.length; i++) {
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if (!regexInt.test(s.ingredients[i].id)) {
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reject(new HttpError(403, 'Error: Query error - Ingredient ID should be an integer !'))
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}
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let update_ingredients_query = `INSERT INTO spells_ingredients (id_spell, id_ingredient) VALUES (${old_spell.id}, ${s.ingredients[i].id})`
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db.query(update_ingredients_query, async (err, result) => {
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if (err) {
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reject(new HttpError(500, 'Error: Database error - No ingredients matching this ID'))
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} else {
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console.log(`Updated association "${s.ingredients[i].name}" to spell ID ${old_spell.id}`)
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resolve()
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}
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})
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}
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}
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} else {
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resolve()
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}
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})
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}
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const promises = [
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updateSchoolsData(),
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updateVariablesData(),
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updateIngredientsData()
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]
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Promise.all(promises)
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.then(data => {
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console.log(data)
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resolve(data)
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})
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.catch(err => {
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reject(err)
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})
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})
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})
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.catch(err => {
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console.log(err)
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})
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}
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router.put('/:id/', async (req, res) => {
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updateSpell(req.body, req.params.id)
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.then(v => {
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res.setHeader('Content-Type', 'application/json;charset=utf-8')
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res.send(JSON.stringify(v))
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})
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.catch(err => {
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res.status(err.code).send(err.message)
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})
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})
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// DELETE ONE ------------------
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const deleteSpell = (id) => {
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return new Promise((resolve, reject) => {
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let delete_schools_query = `DELETE FROM spells_schools WHERE id_spell = ${db.escape(id)}`
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let delete_variables_query = `DELETE FROM spells_variables WHERE id_spell = ${db.escape(id)}`
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let delete_ingredients_query = `DELETE FROM spells_ingredients WHERE id_spell = ${db.escape(id)}`
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let delete_spell_query = `DELETE FROM spell WHERE id = ${db.escape(id)}`
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db.query(delete_schools_query, async (err, result) => {
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if (err) {
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console.log(err)
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reject(new HttpError(500, 'Error: Spell schools deletion failed'))
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}
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console.log(`Deleted schools associated to spell ID ${db.escape(id)}`)
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})
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db.query(delete_variables_query, async (err, result) => {
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if (err) {
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console.log(err)
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reject(new HttpError(500, 'Error: Spell variables deletion failed'))
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}
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console.log(`Deleted variables associated to spell ID ${db.escape(id)}`)
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})
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db.query(delete_ingredients_query, async (err, result) => {
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if (err) {
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console.log(err)
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reject(new HttpError(500, 'Error: Spell ingredients deletion failed'))
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}
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console.log(`Deleted ingredients associated to spell ID ${db.escape(id)}`)
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})
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db.query(delete_spell_query, async (err, result) => {
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if (err) {
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console.log(err)
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reject(new HttpError(500, 'Error: Spell deletion failed'))
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}
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console.log(`Deleted spell ID ${db.escape(id)}, affecting ${result.affectedRows} rows`)
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})
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})
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.catch(err => {
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throw err
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})
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}
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router.delete('/:id/', async (req, res) => {
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deleteSpell(req.params.id)
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.then(v => {
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res.setHeader('Content-Type', 'application/json;charset=utf-8')
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res.send(JSON.stringify(v))
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})
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.catch(err => {
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res.status(err.code).send(err.message)
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})
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})
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// Param validation for single spell
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// (check if id is int) (could be refactored)
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router.param('id', (req, res, next, id) => {
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try {
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if (regexInt.test(id)) {
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next()
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} else {
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throw new HttpError(403, 'Error: Provided ID must be an integer and not zero')
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}
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} catch (err) {
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res.status(err.code).send(err.message)
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}
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})
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// SHARED FUNCTIONS ------------------
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// Builds the associated infos for a given spell object
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const buildSpell = async (spell) => {
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// Fetches the spell's schools
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let fetchSpellSchoolData = (s) => {
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return new Promise((resolve, reject) => {
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if (s == undefined) { reject(new HttpError(404, "Error: No spells matching this ID"))}
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let query =
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"SELECT school.id, school.name " +
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"FROM spells_schools AS sc " +
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"INNER JOIN school AS school ON sc.id_school = school.id " +
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"WHERE sc.id_spell = " + s.id
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db.query(query, (err, result) => {
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if (err) {
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reject(new HttpError(500, 'Error: Database error'))
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} else {
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s.schools = result
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resolve(s)
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}
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})
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})
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}
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// Fetches the spell's variables
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let fetchSpellVariablesData = (s) => {
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return new Promise((resolve, reject) => {
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if (s == undefined) { reject(new HttpError(404, "Error: No spells matching this ID"))}
|
|
|
|
let query =
|
|
"SELECT variable.id, variable.description " +
|
|
"FROM spells_variables AS sv " +
|
|
"INNER JOIN variable AS variable ON sv.id_variable = variable.id " +
|
|
"WHERE sv.id_spell = " + s.id
|
|
|
|
db.query(query, (err, result) => {
|
|
if (err) {
|
|
reject(new HttpError(500, 'Error: Database error'))
|
|
} else {
|
|
s.variables = result
|
|
resolve(s)
|
|
}
|
|
})
|
|
})
|
|
}
|
|
|
|
// Fetches the spell's ingredients
|
|
let fetchSpellIngredientsData = (s) => {
|
|
return new Promise((resolve, reject) => {
|
|
|
|
if (s == undefined) { reject(new HttpError(404, "Error: No spells matching this ID"))}
|
|
|
|
let query =
|
|
"SELECT ingredient.id, ingredient.name " +
|
|
"FROM spells_ingredients AS si " +
|
|
"INNER JOIN ingredient AS ingredient ON si.id_ingredient = ingredient.id " +
|
|
"WHERE si.id_spell = " + s.id
|
|
|
|
db.query(query, (err, result) => {
|
|
if (err) {
|
|
reject(new HttpError(500, 'Error: Database error'))
|
|
} else {
|
|
s.ingredients = result
|
|
resolve(s)
|
|
}
|
|
})
|
|
})
|
|
}
|
|
|
|
// Builds the spell and returns it
|
|
let s = await fetchSpellSchoolData(spell)
|
|
.then(s => { return fetchSpellVariablesData(s) })
|
|
.then(s => { return fetchSpellIngredientsData(s) })
|
|
.catch(err => {
|
|
throw err
|
|
})
|
|
|
|
return s
|
|
}
|
|
|
|
// Check if spell is null
|
|
const isEmptyObject = (obj) => {
|
|
if (Object.keys(obj).length === 0 && obj.constructor === Object) {
|
|
return true
|
|
} else {
|
|
return false
|
|
}
|
|
}
|
|
|
|
module.exports = router
|