public JObject setLoanAcquired(JObject request)
{
// Get arguments
request.TryGetValue("loanItemID", out JToken requestLoanItemId);
request.TryGetValue("value", out JToken requestAcquiredValue);
// Verify presence of arguments
var failedVerifications = new List <string>();
if (requestLoanItemId == null)
{
failedVerifications.Add("loanItemID");
}
if (requestAcquiredValue == null)
{
failedVerifications.Add("value");
}
if (failedVerifications.Any())
{
return(Templates.MissingArguments(failedVerifications.ToArray()));
}
// Verify arguments
if (requestLoanItemId.Type != JTokenType.Integer)
{
failedVerifications.Add("loanItemID");
}
if (requestAcquiredValue.Type != JTokenType.Boolean)
{
failedVerifications.Add("value");
}
if (failedVerifications.Any())
{
return(Templates.InvalidArguments(failedVerifications.ToArray()));
}
// Get loanItem
var condition = new MySqlConditionBuilder("id", MySqlDbType.Int32, (object)requestLoanItemId.ToObject <int>());
var loanItem = Connection.Select <LoanItem>(condition).FirstOrDefault();
if (loanItem == null)
{
return(Templates.NoSuchLoan(requestLoanItemId.ToString()));
}
// Update the IsAcquired value if it isn't equal to the 'value' argument
if ((bool)requestAcquiredValue != loanItem.IsAcquired)
{
loanItem.IsAcquired = (bool)requestAcquiredValue;
Connection.Update(loanItem);
}
//Create base response
return(new JObject()
{
{ "reason", null }
});
}
public JObject resizeLoan(JObject request)
{
//Get arguments
request.TryGetValue("loanId", out JToken loanItemID);
request.TryGetValue("start", out JToken requestStart);
request.TryGetValue("end", out JToken requestEnd);
// Verify the arguments
List <string> failedVerifications = new List <string>();
if (loanItemID == null || loanItemID.Type != JTokenType.Integer)
{
failedVerifications.Add("loanId");
}
if (requestStart == null || !(requestStart.Type == JTokenType.String || requestStart.Type == JTokenType.Date))
{
failedVerifications.Add("start");
}
if (requestEnd == null || !(requestEnd.Type == JTokenType.String || requestEnd.Type == JTokenType.Date))
{
failedVerifications.Add("end");
}
if (failedVerifications.Any())
{
return(Templates.InvalidArguments(failedVerifications.ToArray()));
}
// Parse arguments
DateTime start;
DateTime end;
string loanID = loanItemID.ToString();
try { start = DateTime.Parse(requestStart.ToString()); } catch (Exception) { return(Templates.InvalidArgument("Unable to parse 'start'")); }
try { end = DateTime.Parse(requestEnd.ToString()); } catch (Exception) { return(Templates.InvalidArgument("Unable to parse 'end'")); }
if (end < start)
{
return(Templates.InvalidArguments("'end' must come after 'start'"));
}
DateTimeSpan newLoanSpan = new DateTimeSpan(start, end);
if (newLoanSpan.Start < DateTime.Now.Date)
{
return(Templates.InvalidArgument("'start' may not be set earlier than today."));
}
if (newLoanSpan.Duration > MaxLoanDuration)
{
return(Templates.InvalidArgument($"Duration of the loan may not exceed {MaxLoanDuration.Days} days."));
}
// Build a condition to get the specific loan
var condition = new MySqlConditionBuilder();
// Automatically limit results to current user only if their permission is User
if (CurrentUser.Permission <= UserPermission.User)
{
condition.And().Column("user").Equals(CurrentUser.Username, MySqlDbType.String);
}
condition.And().Column("id").Equals(loanID, MySqlDbType.Int32);
//Get the specified loanItem if it exists. If it doesn't, throw an error.
LoanItem oldLoan = Connection.Select <LoanItem>(condition).FirstOrDefault();
if (oldLoan == null)
{
return(Templates.NoSuchLoan(loanID));
}
// Return a loanExpired template if the loan has already ended
if (oldLoan.End < DateTime.Now)
{
return(Templates.LoanExpired());
}
if (oldLoan.Start < DateTime.Now && oldLoan.Start != start)
{
return(Templates.LoanAlreadyStarted());
}
// Build condition
condition = new MySqlConditionBuilder()
.Column("product_item")
.Equals(oldLoan.ProductItem, MySqlDbType.Int32);
// Select only relevant loans
condition.And().Column("end").GreaterThanOrEqual().Operand(start, MySqlDbType.DateTime);
condition.And().Column("start").LessThanOrEqual().Operand(end, MySqlDbType.DateTime);
//Get all loanItems for this loan's product_item.
var loans = Connection.Select <LoanItem>(condition).ToList();
//Check for conflicting loanItems
bool canResize = true;
foreach (var loan in loans)
{
var loanSpan = new DateTimeSpan(loan.Start, loan.End);
if (newLoanSpan.Overlaps(loanSpan))
{
canResize = false;
break;
}
}
//Create response
var responseData = new JObject();
JObject response = new JObject()
{
{ "reason", null },
{ "responseData", responseData }
};
if (canResize)
{
// Update loan
oldLoan.Start = start;
oldLoan.End = end;
Connection.Update(oldLoan);
}
else if (oldLoan.IsAcquired && !canResize) // If loan is not eligible for a item reassignment
{
return(Templates.LoanResizeFailed());
}
else // If the loan is eligible for an item reassignment
{
// Try to retrieve a list of unreserved equivalent products
var unreservedAlts = Core_GetUnreservedItems(oldLoan.GetProductItem(Connection).ProductId, newLoanSpan);
if (unreservedAlts == null) // Normally this value should not be able to be null. This block is just a failsafe that adds context.
{
throw new InvalidOperationException("Expected type of 'unreservedAlts' is List, but nullreference was found.");
}
if (!unreservedAlts.Any())
{
Log.Error("Failed at line 107");
return(Templates.LoanResizeFailed());
}
// Update loan
oldLoan.ProductItem = unreservedAlts.First().Id.Value;
oldLoan.Start = start;
oldLoan.End = end;
Connection.Update(oldLoan);
// Return new data in response and add message for context
responseData["product_item"] = oldLoan.ProductItem;
response["message"] = "Loan has been reassigned.";
}
return(response);
}
public JObject getLoans(JObject request)
{
// Get arguments
request.TryGetValue("columns", out JToken requestColumns);
request.TryGetValue("productItemIds", out JToken requestProductItems);
request.TryGetValue("userId", out JToken requestUserId);
request.TryGetValue("loanItemID", out JToken requestLoanId);
request.TryGetValue("start", out JToken requestStart);
request.TryGetValue("end", out JToken requestEnd);
// Verify arguments
List <string> failedVerifications = new List <string>();
if (requestColumns != null && (requestColumns.Type != JTokenType.Array || requestColumns.Any(x => x.Type != JTokenType.String)))
{
failedVerifications.Add("columns");
}
if (requestProductItems != null && (requestProductItems.Type != JTokenType.Array || requestProductItems.Any(x => x.Type != JTokenType.String)))
{
failedVerifications.Add("productItemIds");
}
if (requestUserId != null && requestUserId.Type != JTokenType.String)
{
failedVerifications.Add("userId");
}
if (failedVerifications.Any())
{
return(Templates.InvalidArguments(failedVerifications.ToArray()));
}
// Parse arguments
DateTime start;
DateTime end;
try { start = requestStart == null ? new DateTime() : DateTime.Parse(requestStart.ToString()); }
catch (Exception) { return(Templates.InvalidArgument("Unable to parse 'start'")); }
try { end = requestEnd == null ? new DateTime() : DateTime.Parse(requestEnd.ToString()); }
catch (Exception) { return(Templates.InvalidArgument("Unable to parse 'end'")); }
// Prepare values
if (requestColumns == null || requestColumns.Count() == 0)
{
requestColumns = new JArray(LoanItem.metadata.Select(x => x.Column));
}
// Build condition
var condition = new MySqlConditionBuilder();
if (requestProductItems != null && requestProductItems.Any())
{
condition.NewGroup();
foreach (var productItem in requestProductItems)
{
condition.Or()
.Column("product_item")
.Equals(productItem, MySqlDbType.String);
}
condition.EndGroup();
}
// Filter by specific loan id
if (requestLoanId != null)
{
condition.And().Column("id").Equals(requestLoanId, MySqlDbType.Int32);
}
// Filter by user
if (requestUserId != null)
{
condition.And().Column("user").Equals(requestUserId, MySqlDbType.String);
}
// Automatically limit results to current user only if their permission is User
if (CurrentUser.Permission <= UserPermission.User)
{
condition.And().Column("user").Equals(CurrentUser.Username, MySqlDbType.String);
}
// Select only relevant loans
if (requestStart != null)
{
condition.And().Column("end").GreaterThanOrEqual().Operand(start, MySqlDbType.DateTime);
}
if (requestEnd != null)
{
condition.And().Column("start").LessThanOrEqual().Operand(end, MySqlDbType.DateTime);
}
// Get loans
var loans = Connection.Select <LoanItem>(requestColumns.ToObject <string[]>(), condition);
// Build base response
var responseData = new JArray();
JObject response = new JObject()
{
{ "reason", null },
{ "responseData", responseData }
};
// Populate responseData
foreach (var loanData in loans)
{
var item = new JObject();
for (int i = 0; i < requestColumns.Count(); i++)
{
if (loanData[i] is DateTime)
{
item[(string)requestColumns[i]] = new JValue(((DateTime)loanData[i]).ToUniversalTime().Subtract(Epoch).TotalMilliseconds);
}
else
{
item[(string)requestColumns[i]] = new JValue(loanData[i]);
}
}
responseData.Add(item);
}
return(response);
}
public JObject getImages(JObject request)
{
//Get arguments
request.TryGetValue("columns", out JToken requestColumns);
request.TryGetValue("images", out JToken requestImageIds);
if (requestImageIds == null)
{
return(Templates.MissingArguments("imageIds"));
}
// Verify arguments
List <string> failedVerifications = new List <string>();
if (requestColumns != null && (requestColumns.Type != JTokenType.Array || ((JArray)requestColumns).Count == 0))
{
failedVerifications.Add("columns");
}
if (requestImageIds.Type != JTokenType.Array)
{
failedVerifications.Add("images");
}
if (failedVerifications.Any())
{
return(Templates.InvalidArguments(failedVerifications.ToArray()));
}
// Build condition
var condition = new MySqlConditionBuilder();
bool first = true;
foreach (string id in requestImageIds)
{
if (!first)
{
condition.Or();
}
condition.Column(Image.indexes.First(x => x.Type == Index.IndexType.PRIMARY).Columns[0].Column);
condition.Equals(id, MySqlDbType.String);
first = false;
}
// If condition is blank, add a condition that is false
if (first)
{
condition.Not().Null().Is().Null();
}
// Prepare query values
if (requestColumns == null || !requestColumns.Any())
{
requestColumns = new JArray(Image.metadata.Select(x => x.Column));
}
// Add primary key column name
((JArray)requestColumns).Insert(0, Image.indexes.First(x => x.Type == Index.IndexType.PRIMARY).Columns[0].Column);
// Get images
List <object[]> imageData = Connection.Select <Image>(requestColumns.ToObject <string[]>(), condition).ToList();
//Create base response
var responseData = new JObject();
var response = new JObject()
{
{ "reason", null },
{ "responseData", responseData }
};
foreach (var data in imageData)
{
var item = new JObject();
for (int i = 1; i < requestColumns.Count(); i++)
{
item.Add((string)requestColumns[i], new JValue(data[i]));
}
responseData.Add((string)data[0], item);
}
return(response);
}
public JObject addLoan(JObject request)
{
//Get arguments
request.TryGetValue("productId", out JToken requestProductId);
request.TryGetValue("start", out JToken requestStart);
request.TryGetValue("end", out JToken requestEnd);
// Verify the arguments
List <string> failedVerifications = new List <string>();
if (requestProductId == null || requestProductId.Type != JTokenType.String)
{
failedVerifications.Add("productID");
}
if (requestStart == null || !(requestStart.Type == JTokenType.String || requestStart.Type == JTokenType.Date))
{
failedVerifications.Add("start");
}
if (requestEnd == null || !(requestEnd.Type == JTokenType.String || requestEnd.Type == JTokenType.Date))
{
failedVerifications.Add("end");
}
if (failedVerifications.Any())
{
return(Templates.InvalidArguments(failedVerifications.ToArray()));
}
// Parse arguments
DateTime start;
DateTime end;
string productId = requestProductId.ToString();
try { start = DateTime.Parse(requestStart.ToString()); }
catch (Exception) { return(Templates.InvalidArgument("Unable to parse 'start'")); }
try { end = DateTime.Parse(requestEnd.ToString()); }
catch (Exception) { return(Templates.InvalidArgument("Unable to parse 'end'")); }
if (end < start)
{
return(Templates.InvalidArguments("'end' must come after 'start'"));
}
var newLoanSpan = new DateTimeSpan(start, end);
if (newLoanSpan.Start < DateTime.Now.Date)
{
return(Templates.InvalidArgument("'start' may not be set earlier than today."));
}
if (newLoanSpan.Duration > MaxLoanDuration)
{
return(Templates.InvalidArgument($"Duration of the loan may not exceed {MaxLoanDuration.Days} days."));
}
// Get an unreserved product item
ProductItem item;
try {
item = Core_GetUnreservedItems(productId, newLoanSpan).FirstOrDefault();
} catch (Exception) {
return(Templates.NoItemsForProduct(productId));
}
if (item == null)
{
return(Templates.NoItemsForProduct($"Product '{productId}' has no items available during this time."));
}
var loan = new LoanItem(null, CurrentUser.Username, item.Id.Value, start, end);
Connection.Upload(loan);
//Create response
JObject response = new JObject()
{
{ "reason", null },
{ "responseData", new JObject()
{
{ "loanId", loan.Id },
{ "productItem", item.Id }
} }
};
return(response);
}
public JObject getUsers(JObject request)
{
request.TryGetValue("permission", out JToken permValue);
request.TryGetValue("username", out JToken usernameValue);
// Verify arguments
int permission;
string username;
if (permValue != null && permValue.Type == JTokenType.Integer)
{
permission = permValue.ToObject <int>();
if (permission <= -1 || permission >= 4)
{
return(Templates.InvalidArguments("Permission out of range: " + permission));
}
}
else
{
permission = -1;
}
if (usernameValue != null && usernameValue.Type == JTokenType.String)
{
username = usernameValue.ToObject <string>();
}
else
{
username = null;
}
username += "%";
//Construct query
MySqlConditionBuilder query = new MySqlConditionBuilder();
if (username != null)
{
query.Column("username")
.Like(username);
}
if (permission != -1)
{
query.And()
.Column("permissions")
.Equals(permission, MySql.Data.MySqlClient.MySqlDbType.Int32);
}
//Get users
List <User> userdata = Connection.Select <User>(query).ToList();
//Create response list
JArray users = new JArray();
foreach (User user in userdata)
{
users.Add(new JObject()
{
{ "username", user.Username },
{ "permission", (int)user.Permission }
});
}
//Create response
return(new JObject()
{
{ "reason", null },
{ "responseData", users }
});
}
public JObject getProducts(JObject request)
{
// Get request arguments
request.TryGetValue("columns", out JToken requestColumns);
request.TryGetValue("criteria", out JToken requestCriteria);
request.TryGetValue("language", out JToken requestLanguages);
request.TryGetValue("start", out JToken requestRangeStart);
request.TryGetValue("amount", out JToken requestRangeAmount);
MySqlConditionBuilder condition = new MySqlConditionBuilder();
// Verify the types of the arguments
List <string> failedVerifications = new List <string>();
if (requestColumns != null && (requestColumns.Type != JTokenType.Array || requestColumns.Any(x => x.Type != JTokenType.String)))
{
failedVerifications.Add("colums");
}
if (requestCriteria != null)
{
try { condition = Misc.CreateCondition((JObject)requestCriteria, condition); } catch (Exception) { failedVerifications.Add("criteria"); }
}
if (requestLanguages != null && (requestLanguages.Type != JTokenType.Array || requestLanguages.Any(x => x.Type != JTokenType.String)))
{
failedVerifications.Add("language");
}
if (requestRangeStart != null && (requestRangeStart.Type != JTokenType.Integer))
{
failedVerifications.Add("start");
}
if (requestRangeAmount != null && (requestRangeAmount.Type != JTokenType.Integer))
{
failedVerifications.Add("amount");
}
if (failedVerifications.Any())
{
return(Templates.InvalidArguments(failedVerifications.ToArray()));
}
//Create base response
var responseData = new JArray();
JObject response = new JObject()
{
{ "reason", null },
{ "responseData", responseData }
};
// Prepare values for database call
var productPrimary = Product.indexes.First(x => x.Type == Index.IndexType.PRIMARY).Columns[0];
condition.And()
.Column(productPrimary.Column)
.NotEquals(0, productPrimary.Type);
(ulong, ulong)range = (requestRangeStart?.ToObject <ulong>() ?? 0, requestRangeAmount?.ToObject <ulong>() ?? ulong.MaxValue);
if (requestColumns == null || requestColumns.Count() == 0)
{
requestColumns = new JArray(Product.metadata.Select(x => x.Column));
}
else if (requestLanguages != null && !requestColumns.Contains("name"))
{
((JArray)requestColumns).Add("name");
}
// Remove unknown language columns
requestLanguages = new JArray(requestLanguages.Where(x => LanguageItem.metadata.Select(y => y.Column).Contains(x.ToString())));
// Request category data from database
List <object[]> categoryData = Connection.Select <Product>(requestColumns.ToObject <string[]>(), condition, range).ToList();
// Add all categories as dictionaries to responseData
foreach (var data in categoryData)
{
var item = new JObject();
for (int i = 0; i < requestColumns.Count(); i++)
{
item[(string)requestColumns[i]] = new JValue(data[i]);
}
responseData.Add(item);
}
// Add translations if specified in the arguments
if (requestLanguages != null)
{
List <string> nameIds = responseData.Select(x => x["name"].ToString()).ToList();
// Build a condition to get all language items in one query
var nameCondition = new MySqlConditionBuilder();
foreach (var name in nameIds)
{
nameCondition.Or();
nameCondition.Column("id");
nameCondition.Equals(name, MySqlDbType.String);
}
// Get the specified translations
var languageColumns = requestLanguages.ToObject <List <string> >();
if (languageColumns.Count == 0)
{
languageColumns.AddRange(LanguageItem.metadata.Select(x => x.Column));
}
else
{
languageColumns.Insert(0, "id");
}
List <object[]> names = Connection.Select <LanguageItem>(languageColumns.ToArray(), nameCondition).ToList();
for (int i = 0; i < responseData.Count; i++)
{
var nameData = names.First(x => x[0].Equals(nameIds[i]));
var translations = new JObject();
for (int j = 1; j < languageColumns.Count; j++)
{
if (nameData[j] != null)
{
translations[languageColumns[j]] = new JValue(nameData[j]);
}
}
responseData[i]["name"] = translations;
}
}
if (requestLanguages != null)
{
List <string> descIds = responseData.Select(x => x["description"].ToString()).ToList();
// Build a condition to get all language items in one query
var descCondition = new MySqlConditionBuilder();
foreach (var desc in descIds)
{
descCondition.Or();
descCondition.Column("id");
descCondition.Equals(desc, MySqlDbType.String);
}
// Get the specified translations
var languageColumns = requestLanguages.ToObject <List <string> >();
if (languageColumns.Count == 0)
{
languageColumns.AddRange(LanguageItem.metadata.Select(x => x.Column));
}
else
{
languageColumns.Insert(0, "id");
}
List <object[]> names = Connection.Select <LanguageItem>(languageColumns.ToArray(), descCondition).ToList();
for (int i = 0; i < responseData.Count; i++)
{
var nameData = names.First(x => x[0].Equals(descIds[i]));
var translations = new JObject();
for (int j = 1; j < languageColumns.Count; j++)
{
if (nameData[j] != null)
{
translations[languageColumns[j]] = new JValue(nameData[j]);
}
}
responseData[i]["description"] = translations;
}
}
return(response);
}
public JObject addProduct(JObject request)
{
//Get arguments
string productID;
string manufacturer;
string categoryID;
request.TryGetValue("productID", out JToken productIDValue);
request.TryGetValue("categoryID", out JToken categoryIDValue);
request.TryGetValue("manufacturer", out JToken manufacturerValue);
request.TryGetValue("description", out JToken descriptionValue);
request.TryGetValue("name", out JToken nameValue);
// Verify presence of arguments
List <string> failedVerifications = new List <string>();
if (productIDValue == null)
{
failedVerifications.Add("productID");
}
if (categoryIDValue == null)
{
failedVerifications.Add("categoryID");
}
if (manufacturerValue == null)
{
failedVerifications.Add("manufacturer");
}
if (nameValue == null)
{
failedVerifications.Add("name");
}
if (failedVerifications.Any())
{
return(Templates.MissingArguments(failedVerifications.ToArray()));
}
// Verify arguments
if (productIDValue.Type != JTokenType.String)
{
failedVerifications.Add("productID");
}
if (categoryIDValue.Type != JTokenType.String)
{
failedVerifications.Add("categoryID");
}
if (manufacturerValue.Type != JTokenType.String)
{
failedVerifications.Add("manufacturer");
}
if (nameValue.Type != JTokenType.Object)
{
failedVerifications.Add("name");
}
if (failedVerifications.Any())
{
return(Templates.InvalidArguments(failedVerifications.ToArray()));
}
// Prepare values
productID = productIDValue.ToObject <string>();
manufacturer = manufacturerValue.ToObject <string>();
categoryID = categoryIDValue.ToObject <string>();
// Get image
request.TryGetValue("image", out JToken imageValue);
string extension = null;
byte[] imageData = null;
if (imageValue != null && imageValue.Type == JTokenType.Object)
{
JObject image = imageValue.ToObject <JObject>();
image.TryGetValue("data", out JToken dataValue);
image.TryGetValue("extension", out JToken extensionValue);
if (extensionValue != null && extensionValue.Type == JTokenType.String &&
dataValue != null && dataValue.Type == JTokenType.String)
{
extension = extensionValue.ToObject <string>();
imageData = (byte[])dataValue;
if (!Image.ImageFormats.Contains(extension))
{
return(Templates.InvalidArgument("extension"));
}
}
else
{
return(Templates.MissingArguments("data, extension"));
}
}
// Get languages
string en;
string nl = null;
string ar = null;
JObject names = nameValue.ToObject <JObject>();
names.TryGetValue("en", out JToken nameEnValue);
names.TryGetValue("nl", out JToken nameNlValue);
names.TryGetValue("ar", out JToken nameArValue);
if (nameEnValue != null && nameEnValue.Type == JTokenType.String)
{
en = names["en"].ToObject <string>();
}
else
{
return(Templates.MissingArguments("name: en"));
}
if (nameNlValue != null && nameNlValue.Type == JTokenType.String)
{
nl = names["nl"].ToObject <string>();
}
if (nameArValue != null && nameArValue.Type == JTokenType.String)
{
ar = names["ar"].ToObject <string>();
}
LanguageItem name = new LanguageItem(productID + "_name", en, nl, ar);
LanguageItem description;
if (descriptionValue != null && descriptionValue.Type == JTokenType.Object)
{
//Get description
JObject desc = descriptionValue.ToObject <JObject>();
desc.TryGetValue("en", out JToken descEnValue);
desc.TryGetValue("nl", out JToken descNlValue);
desc.TryGetValue("ar", out JToken descArValue);
if (descEnValue != null && descEnValue.Type == JTokenType.String)
{
en = desc["en"].ToObject <string>();
}
else
{
return(Templates.MissingArguments("description: en"));
}
if (descNlValue != null && descNlValue.Type == JTokenType.String)
{
nl = desc["nl"].ToObject <string>();
}
if (descArValue != null && descArValue.Type == JTokenType.String)
{
ar = desc["ar"].ToObject <string>();
}
description = new LanguageItem(productID + "_description", en, nl, ar);
}
else
{
description = new LanguageItem(productID + "_description", null);
}
//Check if product already exists
Product product = GetObject <Product>(productID);
if (product != null)
{
return(Templates.AlreadyExists(productID));
}
//Check if category exists
ProductCategory category = GetObject <ProductCategory>(categoryID);
if (category == null)
{
return(Templates.NoSuchProductCategory(categoryID));
}
//Create product, languageItem, image
name.Upload(Connection);
description.Upload(Connection);
if (imageData != null)
{
Image image = new Image(productID + "_image", imageData, extension);
image.Upload(Connection);
product = new Product(productID, manufacturer, categoryID, productID + "_name", productID + "_description", image.Id);
}
else
{
product = new Product(productID, manufacturer, categoryID, productID + "_name", productID + "_description");
}
product.Upload(Connection);
//Create response
return(new JObject()
{
{ "reason", null },
});
}
public JObject getUnavailableDates(JObject request)
{
// Get arguments
request.TryGetValue("productId", out JToken requestProductId);
request.TryGetValue("start", out JToken requestStart);
request.TryGetValue("end", out JToken requestEnd);
// Verify arguments
List <string> failedVerifications = new List <string>();
if (requestProductId == null || requestProductId.Type != JTokenType.String)
{
return(Templates.InvalidArgument("productId"));
}
if (requestStart == null)
{
return(Templates.InvalidArgument("start"));
}
if (requestEnd == null)
{
return(Templates.InvalidArgument("end"));
}
if (failedVerifications.Any())
{
return(Templates.InvalidArguments(failedVerifications.ToArray()));
}
// Parse arguments
DateTime start;
DateTime end;
try { start = requestStart == null ? new DateTime() : DateTime.Parse(requestStart.ToString()); }
catch (Exception) { return(Templates.InvalidArgument("Unable to parse 'start'")); }
try { end = requestEnd == null ? new DateTime() : DateTime.Parse(requestEnd.ToString()); }
catch (Exception) { return(Templates.InvalidArgument("Unable to parse 'end'")); }
var range = new DateTimeSpan(start, end);
if (range.Duration.Days > 122)
{
return(Templates.InvalidArgument("start and end may not be more than 122 days apart."));
}
// Get all items
var condition = new MySqlConditionBuilder("product", MySqlDbType.String, requestProductId.ToString());
var productItems = Connection.Select <ProductItem>(condition).ToArray();
// Return empty response if no items were found
if (!productItems.Any())
{
return new JObject()
{
{ "reason", null },
{ "responseData", new JArray() }
}
}
;
// Get all loans within the specified range
condition = new MySqlConditionBuilder("product_item", MySqlDbType.Int32, productItems.Select(x => x.Id).Cast <object>().ToArray());
condition.And()
.Column("end")
.GreaterThanOrEqual()
.Operand(range.Start, MySqlDbType.DateTime);
condition.And()
.Column("start")
.LessThanOrEqual()
.Operand(range.End, MySqlDbType.DateTime);
var loanItems = Connection.Select <LoanItem>(condition).ToArray();
// No idea if this is the most efficient way, but it basically iterates
// through all dates of a loan and slaps them in a cache. If the cache
// already contains the date, it increases the counter.
// If the counter is larger or equal to the total amount of items, we
// consider that date unavailable.
var dateCache = new Dictionary <DateTime, int>();
foreach (var loan in loanItems)
{
while (loan.Start < loan.End)
{
if (loan.Start < range.Start)
{
loan.Start = loan.Start.AddDays(1);
continue;
}
if (loan.End > range.End)
{
break;
}
if (dateCache.ContainsKey(loan.Start))
{
dateCache[loan.Start]++;
}
else
{
dateCache[loan.Start] = 1;
}
loan.Start = loan.Start.AddDays(1);
}
}
// Build base response
var responseData = new JArray();
JObject response = new JObject()
{
{ "reason", null },
{ "responseData", responseData }
};
// Add all dates with an amount of loans greater or equal to the max available items
foreach ((DateTime date, int count) in dateCache)
{
if (count >= productItems.Length)
{
responseData.Add((long)(date.ToUniversalTime() - Epoch).TotalMilliseconds);
}
}
return(response);
}
}
public JObject deleteProductItems(JObject request)
{
//Get arguments
request.TryGetValue("productID", out JToken requestProductId);
request.TryGetValue("count", out JToken requestCount);
// Verify presence of arguments
var failedVerifications = new List <string>();
if (requestProductId == null)
{
failedVerifications.Add("productID");
}
if (requestCount == null)
{
failedVerifications.Add("count");
}
if (failedVerifications.Any())
{
return(Templates.MissingArguments(failedVerifications.ToArray()));
}
// Verify arguments
if (requestProductId.Type != JTokenType.String)
{
failedVerifications.Add("productId");
}
if (requestCount.Type != JTokenType.Integer || ((int)requestCount) < 0)
{
failedVerifications.Add("count");
}
if (failedVerifications.Any())
{
return(Templates.InvalidArguments(failedVerifications.ToArray()));
}
// Get all productItems
var condition = new MySqlConditionBuilder("product", MySqlDbType.String, requestProductId.ToString());
var productItems = Connection.Select <ProductItem>(condition).ToArray();
// Return bare response if no items exist
if (!productItems.Any())
{
return(new JObject()
{
{ "reason", null },
{ "responseData", new JObject()
{
{ "deleted", 0 },
{ "ignored", 0 }
} }
});
}
// Get all aquired loans that have yet to end
condition = new MySqlConditionBuilder("product_item", MySqlDbType.Int32, productItems.Select(x => x.Id).Cast <object>().ToArray());
condition.And()
.Column("end")
.GreaterThanOrEqual()
.Operand(DateTime.Now, MySqlDbType.DateTime);
condition.And()
.Column("is_item_acquired")
.Equals().True();
var loans = Connection.Select <LoanItem>(condition).ToArray();
// Create function to track how many product items were ignored and how many weren't
int ignored = 0;
int notIgnored = 0;
bool shouldIgnoreLoanedItem(ProductItem item)
{
bool b = loans.FirstOrDefault(x => x.ProductItem == item.Id) != null;
if (notIgnored != (int)requestCount)
{
if (b)
{
ignored++;
}
else
{
notIgnored++;
}
}
return(b);
}
// Filter out items that are loaned out
var deletableItems = productItems.Where(x => !shouldIgnoreLoanedItem(x)).Take((int)requestCount).ToArray();
// Delete all items
foreach (var item in deletableItems)
{
Connection.Delete(item);
}
//Create base response
return(new JObject()
{
{ "reason", null },
{ "responseData", new JObject()
{
{ "deleted", notIgnored },
{ "ignored", ignored }
} }
});
}