From 5fd2db6d3395d62a3997c05f881d3b636fccca8e Mon Sep 17 00:00:00 2001
From: Alli <allisonglittle@gmail.com>
Date: Sun, 5 Dec 2021 17:11:56 -0800
Subject: [PATCH] Added link to loan items from loans

---
 library-express/loanitems.js                 | 40 +++++++++++++++-----
 library-express/views/create_loan.handlebars |  1 +
 2 files changed, 32 insertions(+), 9 deletions(-)

diff --git a/library-express/loanitems.js b/library-express/loanitems.js
index 155abd1..9d6ddf1 100644
--- a/library-express/loanitems.js
+++ b/library-express/loanitems.js
@@ -1,10 +1,26 @@
-module.exports = function(){
+module.exports = function () {
     var express = require('express');
     var router = express.Router();
     /*Get loan item data from database*/
-    function getLoanItems(res, mysql, context, complete){
-        mysql.pool.query("SELECT li.loanID, l.memberID, li.bookID, CONCAT(p.firstName, ' ', p.lastName) as 'patronName', t.bookTitle, DATE_FORMAT(li.dueDate, '%m/%d/%Y') as 'dueDate', ls.statusDescription, li.renewalCount FROM LoanItems li INNER JOIN LoanStatus ls ON li.loanStatus = ls.statusID INNER JOIN Loans l ON li.loanID = l.loanID INNER JOIN Patrons p ON l.memberID = p.memberID INNER JOIN Books b ON li.bookID = b.bookID INNER JOIN Titles t ON b.ISBN = t.ISBN order by li.loanID;", function(error, results, fields){
-            if(error){
+    function getLoanItems(res, mysql, context, complete) {
+        var sql = "SELECT li.loanID, l.memberID, li.bookID, CONCAT(p.firstName, ' ', p.lastName) as 'patronName', t.bookTitle, DATE_FORMAT(li.dueDate, '%m/%d/%Y') as 'dueDate', ls.statusDescription, li.renewalCount FROM LoanItems li INNER JOIN LoanStatus ls ON li.loanStatus = ls.statusID INNER JOIN Loans l ON li.loanID = l.loanID INNER JOIN Patrons p ON l.memberID = p.memberID INNER JOIN Books b ON li.bookID = b.bookID INNER JOIN Titles t ON b.ISBN = t.ISBN ORDER BY li.loanID;";
+        mysql.pool.query(sql, function (error, results, fields) {
+            if (error) {
+                res.write(JSON.stringify(error));
+                res.end();
+            }
+            context.loanItems = results;
+            complete();
+        });
+
+    }
+
+    /*Get loan item data from a load id */
+    function getItemsByLoanID(res, loanID, mysql, context, complete) {
+        var sql = "SELECT li.loanID, l.memberID, li.bookID, CONCAT(p.firstName, ' ', p.lastName) as 'patronName', t.bookTitle, DATE_FORMAT(li.dueDate, '%m/%d/%Y') as 'dueDate', ls.statusDescription, li.renewalCount FROM LoanItems li INNER JOIN LoanStatus ls ON li.loanStatus = ls.statusID INNER JOIN Loans l ON li.loanID = l.loanID INNER JOIN Patrons p ON l.memberID = p.memberID INNER JOIN Books b ON li.bookID = b.bookID INNER JOIN Titles t ON b.ISBN = t.ISBN WHERE li.loanID = ?;";
+        var inserts = [loanID];
+        mysql.pool.query(sql, inserts, function (error, results, fields) {
+            if (error) {
                 res.write(JSON.stringify(error));
                 res.end();
             }
@@ -13,16 +29,22 @@ module.exports = function(){
         });
     }
 
-    /*Display all loan items.*/
-    router.get('/', function(req, res){
+    /*Display loan items.*/
+    router.get('/', function (req, res) {
         var callbackCount = 0;
         var context = {};
         context.jsscripts = ['renew_loan.js'];
         var mysql = req.app.get('mysql');
-        getLoanItems(res, mysql, context, complete);
-        function complete(){
+        // check if there are query parameters for the loan id
+        console.log(req.query);
+        if (req.query.loanID === undefined) {
+            getLoanItems(res, mysql, context, complete);
+        } else {
+            getItemsByLoanID(res, req.query.loanID, mysql, context, complete)
+        }
+        function complete() {
             callbackCount++;
-            if(callbackCount >= 1){
+            if (callbackCount >= 1) {
                 res.render('loan_items', context);
             }
         }
diff --git a/library-express/views/create_loan.handlebars b/library-express/views/create_loan.handlebars
index c010974..00fba4d 100644
--- a/library-express/views/create_loan.handlebars
+++ b/library-express/views/create_loan.handlebars
@@ -51,6 +51,7 @@
                             <td>{{loanDate}}</td>
                             <td>{{bookCount}}</td>
                             <input type="hidden" id="loanID" name="loanID" value={{loanID}}>
+                            <td><button type="submit" formaction="/loan_items" formmethod="get">View Details</button>
                             <td><button type="submit" formaction="/delete_loan" formmethod="post">Delete</button></td>
                         </form>
                     </tr>