Updated book routes

server/type-handlers/book-handlers.js

@@ -1,36 +1,38 @@
 const { Book } = require('../database/models');
 
 //utils
-const checkDateFormat = date => /(19\d{2}|20\d{2})[-\/.](0[1-9]|1[012])[-\/.](0[1-9]|[12][0-9]|3[01])/.test(date);
+const checkDateFormat = date => /(19\d{2}|20\d{2})[-\/.](0[1-9]|1[012])[-\/.](0[1-9]|[12][0-9]|3[01])/.test(date) || date == 'NULL';
 
 const queryBook = async (query, typeGraph) => {
 	//sequelize stuff to find
 	const attributes = [];
+	const where = {};
 
 	//specify fields to find
 	Object.keys(query)
 		.filter(key => key != 'typeName') //filter out this meta-field
 		.forEach(key => {
-			//check published date
-			if (key == 'published' && !checkDateFormat(query[key].match)) {
-				throw 'Wrong date format for published';
-			}
-
-			//all book members should be scalar
+			//all book members queried should be scalar
 			if (query[key].scalar) {
 				//push this key into the attributes list
 				attributes.push(key);
 			}
+
+			//filter the members to a specific value
+			if (query[key].match) {
+				where[key] = query[key].match == 'NULL' ? null : query[key].match;
+			}
 		})
 	;
 
 	//search the database
 	const result = await Book.findAll({
-		attributes: attributes
+		attributes: attributes,
+		where: where,
 	});
 
 	//finally
-	return result;
+	return result.map(book => book.dataValues);
 };
 
 const createBook = async (query, typeGraph) => {
@@ -45,7 +47,7 @@ const createBook = async (query, typeGraph) => {
 
 		//specify fields to create
 		Object.keys(q)
-			.filter(key => key != 'typeName' && key != 'create') //filter out this meta-field
+			.filter(key => key != 'typeName' && key != 'create') //filter out these meta-fields
 			.forEach(key => {
 				//check published date
 				if (key == 'published' && !checkDateFormat(q[key].create)) {
@@ -76,7 +78,7 @@ const createBook = async (query, typeGraph) => {
 
 		//specify fields to return in each record
 		const keys = Object.keys(q)
-			.filter(key => key != 'typeName' && key != 'create') //filter out this meta-field
+			.filter(key => key != 'typeName' && key != 'create') //filter out these meta-fields
 			.forEach(key => {
 				if (q[key].scalar) {
 					returns[idx][key] = results[idx][key];
@@ -90,11 +92,96 @@ const createBook = async (query, typeGraph) => {
 };
 
 const updateBook = async (query, typeGraph) => {
-	throw 'Not yet implemented';
+	//total updated
+	const totals = [];
+
+	const promises = query.map(async (q, idx) => {
+		//the array of objects to update
+		const updates = {};
+		const where = {};
+
+		//just in case
+		if (!q.update && !q.match) {
+			throw 'Unexpected field (expected an update or match keyword)';
+		}
+
+		//specify fields to update
+		Object.keys(q)
+			.filter(key => key != 'typeName' && key != 'create') //filter out these meta-fields
+			.forEach(key => {
+				//check published date format
+				if (key == 'published') {
+					if (q[key].update && !checkDateFormat(q[key].update)) {
+						throw 'Wrong date format for published';
+					}
+				}
+
+				//all book members should be scalar
+				if (q[key].update) {
+					//push this key into the updates object
+					updates[key] = q[key].update;
+				}
+
+				//filter the members to a specific value
+				if (q[key].match) {
+					where[key] = q[key].match == 'NULL' ? null : q[key].match;
+				}
+			})
+		;
+
+		//update the database
+		const [updated] = await Book.update(updates, { where });
+
+		totals.push(updated);
+	});
+
+	await Promise.all(promises);
+
+	//finally
+	return { totals };
 };
 
 const deleteBook = async (query, typeGraph) => {
-	throw 'Not yet implemented';
+	//total updated
+	const totals = [];
+
+	const promises = query.map(async (q, idx) => {
+		//the array of objects to delete
+		const where = {};
+
+		//just in case
+		if (!q.delete) {
+			throw 'Unexpected field (expected match keyword)';
+		}
+
+		//specify fields to delete
+		Object.keys(q)
+			.filter(key => key != 'typeName' && key != 'delete') //filter out these meta-fields
+			.forEach(key => {
+				//check published date format
+				if (key == 'published') {
+					if (q[key].match && !checkDateFormat(q[key].match)) {
+						throw 'Wrong date format for published';
+					}
+				}
+
+				//filter the members to a specific value
+				if (q[key].match) {
+					where[key] = q[key].match == 'NULL' ? null : q[key].match;
+				}
+			})
+		;
+
+		//update the database
+		const deleted = await Book.destroy({ where });
+
+		totals.push(deleted);
+	});
+
+	await Promise.all(promises);
+
+	//finally
+	return { totals };
 };
 
 module.exports = {