From 2b82e3ad33774e73c8fde73cf26d3c071c3205e5 Mon Sep 17 00:00:00 2001
From: jdat82 <jean.dat@gmail.com>
Date: Sat, 6 Feb 2016 19:54:48 +0100
Subject: [PATCH] List of characters with search and incremental rendering.

---
 app/app.constant.js                     |  6 ++--
 app/characters/_characters.scss         |  4 +++
 app/characters/characters.controller.js | 47 ++++++++++++++++++++-----
 app/characters/tab-characters.jade      | 20 ++++++-----
 4 files changed, 59 insertions(+), 18 deletions(-)

diff --git a/app/app.constant.js b/app/app.constant.js
index fc38924..f498df6 100644
--- a/app/app.constant.js
+++ b/app/app.constant.js
@@ -12,11 +12,13 @@
 		.constant('apiEndpoint', '@@apiEndpoint')
 		.constant('apiKey', '@@apiKey')
         // Oups, I did it again
-		.constant('privateApiKey', '@@privateApiKey');
+		.constant('privateApiKey', '@@privateApiKey')
+        // Marvel default offset when requesting a list of results (number of items)
+        .constant('defaultOffset', 20);
 
     // Same as `JSON.stringify` but with indentation.
     function stringify(value) {
         return JSON.stringify(value, null, '    ');
     }
 
-})();
\ No newline at end of file
+})();
diff --git a/app/characters/_characters.scss b/app/characters/_characters.scss
index 8bd5598..d188167 100644
--- a/app/characters/_characters.scss
+++ b/app/characters/_characters.scss
@@ -2,4 +2,8 @@
     &__form{
         width: 100%;
     }
+    &__footer{
+        text-align: center;
+        margin: $content-padding $content-padding $content-padding*2 $content-padding;
+    }
 }
diff --git a/app/characters/characters.controller.js b/app/characters/characters.controller.js
index 5627702..062d79c 100644
--- a/app/characters/characters.controller.js
+++ b/app/characters/characters.controller.js
@@ -5,16 +5,20 @@
         .module('app')
         .controller('CharactersController', CharactersController);
 
-    function CharactersController($log, charactersService, $cordovaToast, throwErr, $scope, $cordovaKeyboard) {
+    function CharactersController($log, charactersService, $cordovaToast, throwErr, defaultOffset,
+                                  $cordovaKeyboard) {
 
         var vm = this;
         vm.title = 'CharactersController';
-        vm.filter = '';
+        vm.filter = 'Deadpool';
         // Let's start with something cool ;)
-        vm.characters = charactersService.getList({nameStartsWith:'Deadpool'}).$object;
+        vm.characters = [];
         vm.keep = keep;
         vm.search = search;
         vm.searching = false;
+        vm.loadMore = loadMore;
+        vm.hasMoreData = hasMoreData;
+        vm.offset = 0;
 
         activate();
 
@@ -22,6 +26,7 @@
 
         function activate() {
             $log.debug(vm.title + ' instantiated');
+            search();
         }
 
         function keep() {
@@ -29,24 +34,50 @@
         }
 
         function search() {
+            vm.searching = true;
             var criteria = vm.filter ? {nameStartsWith: vm.filter} : {};
             var promise = charactersService.getList(criteria);
             vm.characters = promise.$object;
-            vm.searching = true;
+            vm.offset = 0;
             $cordovaKeyboard.close();
-            return promise.then(log).catch(throwErr).finally(hideSpinner);
+            return promise.then(clean).catch(throwErr);
 
             ///////////
 
-            function log(characters) {
-                $log.debug(characters.length + ' results:', characters);
+            function clean(results) {
+                var meta = _.get(results, 'meta');
+                $log.info('Loaded', meta.count, '/', meta.total, 'characters which name starts with', vm.filter);
+                vm.searching = false;
             }
 
-            function hideSpinner(){
+        }
+
+        function loadMore() {
+            vm.searching = true;
+            var criteria = {};
+            vm.filter && (criteria.nameStartsWith = vm.filter);
+            vm.offset += defaultOffset;
+            criteria.offset = vm.offset;
+            return charactersService.getList(criteria).then(updateList).catch(throwErr);
+
+            ///////////
+
+            function updateList(results) {
+                var meta = _.get(results, 'meta');
+                $log.info('Loaded', (meta.count + meta.offset), '/', meta.total, 'characters which name starts with', vm.filter);
+                vm.characters = _.concat(vm.characters, results);
+                vm.characters.meta = results.meta;
                 vm.searching = false;
             }
+
         }
 
+        function hasMoreData() {
+            var meta = _.get(vm, 'characters.meta');
+            return meta && (meta.count + meta.offset) < meta.total;
+        }
+
+
     }
 
 })();
diff --git a/app/characters/tab-characters.jade b/app/characters/tab-characters.jade
index 238a408..304726d 100644
--- a/app/characters/tab-characters.jade
+++ b/app/characters/tab-characters.jade
@@ -5,11 +5,15 @@ ion-view.crt(view-title='Characters')
                 label.item-input-wrapper
                     i.icon.ion-ios-search.placeholder-icon
                     input(type='search', placeholder='Name starts with…', name='name',
-                        ng-model='vm.filter', spellcheck="false")
-                    ion-spinner.spinner-assertive(ng-if='vm.searching')
-        .list.card(ng-repeat="character in vm.characters track by character.id")
-            .item.item-image(ui-sref='tab.character-detail({character:character})')
-                img(ng-src="{{character.getThumbnailUrl()}}")
-            .item.item-icon-right.assertive
-                i.icon.ion-android-favorite-outline(ng-click='vm.keep()')
-                | {{character.name}}
+                    ng-model='vm.filter', spellcheck="false")
+        .list
+            .card(ng-repeat="character in vm.characters track by character.id")
+                .item.item-image(ui-sref='tab.character-detail({character:character})')
+                    img(ng-src="{{character.getThumbnailUrl()}}")
+                .item.item-icon-right.assertive
+                    i.icon.ion-android-favorite-outline(ng-click='vm.keep()')
+                    | {{character.name}}
+        .crt__footer
+            ion-spinner.spinner-assertive(ng-if='vm.searching')
+            button.button.button-block.button-assertive(ng-click='vm.loadMore()',
+            ng-show='vm.hasMoreData()') Load more