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Merge pull request #48 from Architizer/get-next-context
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Get Next/Previous Context
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@expandrew
expandrew committed Jun 9, 2016
2 parents fd018b8 + f3813ba commit 889606d
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Showing 4 changed files with 291 additions and 39 deletions.
295 changes: 262 additions & 33 deletions mendel/angular/src/app/main/main.controller.js
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Original file line number Diff line number Diff line change
Expand Up @@ -6,23 +6,41 @@
.controller('MainController', MainController);

/** @ngInject */
function MainController(Category, Context, Review, Session, toastr) {
function MainController($q, $scope, AuthService, Category, Context, Review, Session, toastr) {
var vm = this;

vm.getContext = getContext;
vm.getCategories = getCategories;
vm.getNextContext = getNextContext;
vm.getPrevContext = getPrevContext;

// Initialize
vm.getContext();
vm.getCategories();
init();

function init () {

// Wait for Session to be created
var killSessionWatcher = $scope.$watch(AuthService.isAuthenticated, function () {

if (Session.user) {

// Get Categories
getCategories();

// Get the last Context the user reviewed
getContext(Session.user.last_context_id);

// Kill this watch when we have a Session
killSessionWatcher();
}
});
}


// Controller Functions

// Get Context
function getContext () {
function getContext (id) {

Context.get({id: 1})
Context.get({id: id})
.$promise
.then(getContextSuccess)
.catch(getContextError);
Expand All @@ -33,6 +51,25 @@
vm.context.front = '"...' + vm.context.text.substring(0, vm.context.position_from);
vm.context.back = vm.context.text.substring(vm.context.position_to, vm.context.text.length) + '..."';
vm.keyword = context.keyword;
vm.context.previouslySelectedCategories = preselect();

function preselect () {
var _prevCategories = []

// Load previously-selected categories
angular.forEach(context.reviews, function(review){
_prevCategories.push(review.category);
});

// Loop through categories, set "selected" if in prevously selected categories for context
angular.forEach(vm.categories, function(category) {
if (_prevCategories.indexOf(category.id) !== -1) {
category.selected = true;
}
});

return _prevCategories;
}

return context;
}
Expand Down Expand Up @@ -71,48 +108,240 @@
// Get Next Context
function getNextContext () {

submitReviews();
var _nextContextId = vm.context.next_context_id;

if (vm.context.keyword) {

submitReviews()
.then(submitReviewsSuccess)
.catch(submitReviewsError);
}

function submitReviewsSuccess (successCategoryIds) {

if (successCategoryIds) {

// Show Success Toast
toastr.success('Added categories to ' + vm.context.keyword.name);
}
else {

// Show Success Toast
toastr.success('Updated categories for ' + vm.context.keyword.name);
}

if (_nextContextId) {

// Deselect all categories
deselectAllCategories();

getContext(_nextContextId);
}
else {

var _prevContextId = angular.copy(vm.context.id);

// Empty Context
vm.context = {};
vm.keyword = null
vm.context.prev_context_id = _prevContextId;
}
}

function submitReviewsError (errorCategoryIds) {

toastr.error('Could not submit reviews for category IDs: ' + errorCategoryIds, 'Error');
}
}

// Get Previous Context
function getPrevContext () {

var _prevContextId = vm.context.prev_context_id;

if (_prevContextId) {

// Deselect all categories
deselectAllCategories();

getContext(_prevContextId);
}
}

// Deselect All Categories
function deselectAllCategories () {

angular.forEach(vm.categories, function (category) {
category.selected = false;
});
}

// Submit Reviews
function submitReviews () {

angular.forEach(vm.categories, function(category) {
// Set up deferred object to return
var deferred = $q.defer();

if (category.selected) {
// Set up promise array
var promises = [];

var r = {
category: category.id,
context: vm.context.id,
keyword: vm.context.keyword.id,
user: Session.user.id
};
// Set up arrays of categories
var currentlySelected = [], // (IDs of currently selected categories, raw from the form)
currentlyUnselected = [], // (IDs of currently unselected categories, raw from the form)
existingReviews = [], // (IDs of existing reviews for this context)
previouslySelected = [], // OMIT each (vm.categories[selected] is included in context.reviews)
newlySelected = [], // SAVE each (vm.categories[selected] is not included in context.reviews)
newlyUnselected = [], // DELETE each (vm.categories[!selected] is included in context.reviews)
reviewsToDelete = []; // (IDs of reviews to be deleted)

Review.save(r)
.$promise
.then(submitReviewSuccess)
.catch(submitReviewError);
constructArrays();

}
function constructArrays () {

function submitReviewSuccess (review) {
// Construct currentlySelected and currentlyUnselected arrays
angular.forEach(vm.categories, function (category) {
if (category.selected) {
currentlySelected.push(category.id);
}
if (!category.selected) {
currentlyUnselected.push(category.id);
}
});

// Construct previouslySelected array ()
angular.forEach(vm.context.reviews, function(review) {
previouslySelected.push(review.category);
existingReviews.push(review.id);
});

// Construct newlySelected array
angular.forEach(currentlySelected, function(categoryId) {
if (previouslySelected.indexOf(categoryId) === -1) {
newlySelected.push(categoryId);
}
});

// Construct newlyUnselected array
angular.forEach(currentlyUnselected, function (categoryId) {
if (previouslySelected.indexOf(categoryId) !== -1) {
newlyUnselected.push(categoryId);
}
});

// Construct reviewsToDelete array
angular.forEach(vm.context.reviews, function(review) {
if (newlyUnselected.indexOf(review.category) !== -1) {
reviewsToDelete.push(review.id);
}
});
}


// Queue a promise to save each newly selected category
angular.forEach(newlySelected, function (categoryId) {

// Construct Review object
var r = {
category: categoryId,
context: vm.context.id,
keyword: vm.context.keyword.id,
user: Session.user.id
};

var promise = Review.save(r)
.$promise
.then(saveReviewSuccess)
.catch(saveReviewError);

// Push promise into array
promises.push(promise);

});

// Queue a promise to delete each newly unselected category
angular.forEach(reviewsToDelete, function (reviewId) {

var promise = Review.delete({id: reviewId})
.$promise
.then(deleteReviewSuccess)
.catch(deleteReviewError);

// Push promise into array
promises.push(promise);

});

// (Callbacks)
function saveReviewSuccess (data) { return data; }
function saveReviewError (error) { return error; }
function deleteReviewSuccess (data) { return data; }
function deleteReviewError (error) { return error; }

var successMessage = 'Category <strong>' + review.category + '</strong> added to Keyword <strong>' + review.keyword + '</strong>';

// Show Toastr Success
toastr.success(successMessage, 'Category Added');
// Unselect the category
category.selected = false;
}

function submitReviewError (error) {
// Run the queue of promises
$q.all(promises)
.then(promiseQueueSuccess)
.catch(promiseQueueError);

// Show Error Toast
for (var i in error.data) {
toastr.error(error.data[i][0], 'Error', {timeOut: 5000});
// (Callbacks)
function promiseQueueSuccess (items) {

var successItems = [];
var errorItems = [];

angular.forEach(items, function (item) {

// If the item is a Review item, push to success array
if (item instanceof Review) {
successItems.push(item);
}
// Otherwise, it is an Error item, push to error array
else {
errorItems.push(item);
}
});

// If there are any review errors, return IDs of categories that failed, and reject promise
if (errorItems.length) {
var errorCategoryIds = [];

// Get Category IDs for each success:
angular.forEach(errorItems, function (errorItem) {
errorCategoryIds.push(errorItem.config.data.category);
});

errorCategoryIds = errorCategoryIds.join(', ');

deferred.reject(errorCategoryIds);
}
});

// Otherwise, return IDs of successful categories, and resolve promise
else {
var successCategoryIds = [];

// Get Category IDs for each success:
angular.forEach(successItems, function (successItem) {
successCategoryIds.push(successItem.category);
});

successCategoryIds = successCategoryIds.join(', ');

deferred.resolve(successCategoryIds);
}

}

// If there are other errors with the $q.all(), return error and reject promise
function promiseQueueError (error) {
console.error('promiseQueueError:', error);

deferred.reject('Error Submitting Reviews');
}

return deferred.promise;
}


}
})();
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