public JObject deleteLoan(JObject request)
{
// Get arguments
request.TryGetValue("loanId", out JToken loanId);
// Verify arguments
if (loanId == null || loanId.Type != JTokenType.Integer)
{
return(Templates.InvalidArgument("loanId"));
}
// Build condition
var condition = new MySqlConditionBuilder();
if (CurrentUser.Permission <= UserPermission.User)
{
condition.Column("user").Equals(CurrentUser.Username, MySqlDbType.String);
}
condition.And().Column("id").Equals(loanId, MySqlDbType.String);
// Get and delete loan, or return error if no such loan exists
var loan = Connection.Select <LoanItem>(condition, range: (0, 1)).FirstOrDefault();
if (loan == null)
{
return(Templates.NoSuchLoan(loanId.ToString()));
}
if (loan.Start < DateTime.Now)
{
return(Templates.LoanAlreadyStarted());
}
Connection.Delete(loan);
// Create response
JObject response = new JObject()
{
{ "reason", null }
};
return(response);
}
public static MySqlConditionBuilder CreateCondition(JObject criteria, MySqlConditionBuilder condition = null)
{
condition = condition ?? new MySqlConditionBuilder();
condition.NewGroup();
int i = 0;
foreach (KeyValuePair <string, JToken> pair in criteria)
{
if (i > 0)
{
condition.And();
}
condition.Column(pair.Key);
string value = (string)pair.Value;
string[] operands = value.Split("OR");
foreach (string operand in operands)
{
string[] split = operand.Split(" ");
if (split[0] == "LIKE")
{
condition.Like(split[1]);
}
else
{
condition.Equals(operand, MySql.Data.MySqlClient.MySqlDbType.String);
}
if (operands.Last() != operand)
{
condition.Or();
}
}
i++;
}
return(condition.EndGroup());
}
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 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);
}
