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//
// JSONModelError.m
// JSONModel
//
#import "JSONModelError.h"
NSString* const JSONModelErrorDomain = @"JSONModelErrorDomain";
NSString* const kJSONModelMissingKeys = @"kJSONModelMissingKeys";
NSString* const kJSONModelTypeMismatch = @"kJSONModelTypeMismatch";
NSString* const kJSONModelKeyPath = @"kJSONModelKeyPath";
NSString* const kJSONModelSoftKeyPath = @"kJSONModelSoftKeyPath";
@implementation JSONModelError
+(id)errorInvalidDataWithMessage:(NSString*)message
{
message = [NSString stringWithFormat:@"Invalid JSON data: %@", message];
return [JSONModelError errorWithDomain:JSONModelErrorDomain
code:kJSONModelErrorInvalidData
userInfo:@{NSLocalizedDescriptionKey:message}];
}
+(id)errorInvalidDataWithMissingKeys:(NSSet *)keys
{
return [JSONModelError errorWithDomain:JSONModelErrorDomain
code:kJSONModelErrorInvalidData
userInfo:@{NSLocalizedDescriptionKey:@"Invalid JSON data. Required JSON keys are missing from the input. Check the error user information.",kJSONModelMissingKeys:[keys allObjects]}];
}
+(id)errorInvalidDataWithTypeMismatch:(NSString*)mismatchDescription
{
return [JSONModelError errorWithDomain:JSONModelErrorDomain
code:kJSONModelErrorInvalidData
userInfo:@{NSLocalizedDescriptionKey:@"Invalid JSON data. The JSON type mismatches the expected type. Check the error user information.",kJSONModelTypeMismatch:mismatchDescription}];
}
+(id)errorBadResponse
{
return [JSONModelError errorWithDomain:JSONModelErrorDomain
code:kJSONModelErrorBadResponse
userInfo:@{NSLocalizedDescriptionKey:@"Bad network response. Probably the JSON URL is unreachable."}];
}
+(id)errorBadJSON
{
return [JSONModelError errorWithDomain:JSONModelErrorDomain
code:kJSONModelErrorBadJSON
userInfo:@{NSLocalizedDescriptionKey:@"Malformed JSON. Check the JSONModel data input."}];
}
+(id)errorModelIsInvalid
{
return [JSONModelError errorWithDomain:JSONModelErrorDomain
code:kJSONModelErrorModelIsInvalid
userInfo:@{NSLocalizedDescriptionKey:@"Model does not validate. The custom validation for the input data failed."}];
}
+(id)errorInputIsNil
{
return [JSONModelError errorWithDomain:JSONModelErrorDomain
code:kJSONModelErrorNilInput
userInfo:@{NSLocalizedDescriptionKey:@"Initializing model with nil input object."}];
}
- (instancetype)errorByPrependingKeyPathComponent:(NSString*)component
{
// Create a mutable copy of the user info so that we can add to it and update it
NSMutableDictionary* userInfo = [self.userInfo mutableCopy];
// Create or update the key-path
NSString* existingPath = userInfo[kJSONModelKeyPath];
NSString* separator = [existingPath hasPrefix:@"["] ? @"" : @".";
NSString* updatedPath = (existingPath == nil) ? component : [component stringByAppendingFormat:@"%@%@", separator, existingPath];
userInfo[kJSONModelKeyPath] = updatedPath;
// Create the new error
return [JSONModelError errorWithDomain:self.domain
code:self.code
userInfo:[NSDictionary dictionaryWithDictionary:userInfo]];
}
- (instancetype)errorByAppendingSoftMsg:(NSString *)msg class:(Class)cls {
/*
softError: 特指kJSONModelErrorModelSoft错误
criticalError: 非kJSONModelErrorModelSoft错误
在userInfo中追加新的key-value。只会发生在softError中。
如果第一次产生的是softError，再发生criticalError，将只返回criticalError，softError将会被丢弃
*/
NSMutableDictionary* userInfo = [self.userInfo mutableCopy];
NSString *existMsg = userInfo[kJSONModelSoftKeyPath] ?: @"";
userInfo[kJSONModelSoftKeyPath] = [NSString stringWithFormat:@"%@.%@/%@", NSStringFromClass(cls), msg, existMsg];
return [JSONModelError errorWithDomain:JSONModelErrorDomain
code:kJSONModelErrorModelSoft
userInfo:[userInfo copy]];
}
- (instancetype)errorByAppendingSubPropertyMsg:(NSString *)msg class:(Class)cls {
/*
softError: 特指kJSONModelErrorModelSoft错误
criticalError: 非kJSONModelErrorModelSoft错误
在userInfo中追加新的key-value。只会发生在softError中。
如果第一次产生的是softError，再发生criticalError，将只返回criticalError，softError将会被丢弃
*/
NSMutableDictionary* userInfo = [self.userInfo mutableCopy];
NSString *existMsg = userInfo[kJSONModelSoftKeyPath] ?: @"";
userInfo[kJSONModelSoftKeyPath] = [NSString stringWithFormat:@"%@.%@->%@", NSStringFromClass(cls), msg, existMsg];
return [JSONModelError errorWithDomain:JSONModelErrorDomain
code:kJSONModelErrorModelSoft
userInfo:[userInfo copy]];
}
+(id)errorSoftMsg:(NSString *)msg class:(Class)cls {
NSDictionary *dic = @{NSLocalizedDescriptionKey:@"Some json value typee is wrong, but not critical.",
kJSONModelSoftKeyPath: [NSString stringWithFormat:@"%@.%@", NSStringFromClass(cls), msg]};
return [JSONModelError errorWithDomain:JSONModelErrorDomain
code:kJSONModelErrorModelSoft
userInfo:dic];
}
@end