//
/**
 *    Copyright (c) 2023 Project CHIP Authors
 *
 *    Licensed under the Apache License, Version 2.0 (the "License");
 *    you may not use this file except in compliance with the License.
 *    You may obtain a copy of the License at
 *
 *        http://www.apache.org/licenses/LICENSE-2.0
 *
 *    Unless required by applicable law or agreed to in writing, software
 *    distributed under the License is distributed on an "AS IS" BASIS,
 *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *    See the License for the specific language governing permissions and
 *    limitations under the License.
 */

#import "MTRDeviceControllerLocalTestStorage.h"
#import "MTRDevice_Internal.h"
#import "MTRLogging_Internal.h"

@implementation MTRDeviceControllerLocalTestStorage {
    id<MTRDeviceControllerStorageDelegate> _passThroughStorage;
}

+ (BOOL)localTestStorageEnabled
{
    NSUserDefaults * defaults = [NSUserDefaults standardUserDefaults];
    return [defaults boolForKey:kTestStorageUserDefaultEnabledKey];
}

+ (void)setLocalTestStorageEnabled:(BOOL)localTestStorageEnabled
{
    NSUserDefaults * defaults = [NSUserDefaults standardUserDefaults];
    [defaults setBool:localTestStorageEnabled forKey:kTestStorageUserDefaultEnabledKey];
    MTR_LOG("MTRDeviceControllerLocalTestStorage setLocalTestStorageEnabled %d", localTestStorageEnabled);
    BOOL storedLocalTestStorageEnabled = [defaults boolForKey:kTestStorageUserDefaultEnabledKey];
    if (storedLocalTestStorageEnabled != localTestStorageEnabled) {
        MTR_LOG_ERROR("MTRDeviceControllerLocalTestStorage setLocalTestStorageEnabled %d failed", localTestStorageEnabled);
    }
}

// TODO: Add another init argument for controller so that this can support multiple-controllers.
- (instancetype)initWithPassThroughStorage:(id<MTRDeviceControllerStorageDelegate>)passThroughStorage
{
    if (self = [super init]) {
        _passThroughStorage = passThroughStorage;
        MTR_LOG("MTRDeviceControllerLocalTestStorage initialized with pass-through storage %@", passThroughStorage);
    }
    return self;
}

- (nullable id<NSSecureCoding>)controller:(MTRDeviceController *)controller
                              valueForKey:(NSString *)key
                            securityLevel:(MTRStorageSecurityLevel)securityLevel
                              sharingType:(MTRStorageSharingType)sharingType
{
    if (sharingType == MTRStorageSharingTypeNotShared) {
        NSUserDefaults * defaults = [NSUserDefaults standardUserDefaults];
        NSData * storedData = [defaults dataForKey:key];
        NSError * error;
        id value = [NSKeyedUnarchiver unarchivedObjectOfClasses:MTRDeviceControllerStorageClasses() fromData:storedData error:&error];
        return value;
    } else {
        if (_passThroughStorage) {
            return [_passThroughStorage controller:controller valueForKey:key securityLevel:securityLevel sharingType:sharingType];
        } else {
            MTR_LOG_ERROR("MTRDeviceControllerLocalTestStorage valueForKey: shared type but no pass-through storage");
            return nil;
        }
    }
}

- (BOOL)controller:(MTRDeviceController *)controller
        storeValue:(id<NSSecureCoding>)value
            forKey:(NSString *)key
     securityLevel:(MTRStorageSecurityLevel)securityLevel
       sharingType:(MTRStorageSharingType)sharingType
{
    if (sharingType == MTRStorageSharingTypeNotShared) {
        NSError * error = nil;
        NSData * data = [NSKeyedArchiver archivedDataWithRootObject:value requiringSecureCoding:YES error:&error];
        if (error) {
            MTR_LOG_ERROR("MTRDeviceControllerLocalTestStorage storeValue: failed to convert value object to data %@", error);
            return NO;
        }
        NSUserDefaults * defaults = [NSUserDefaults standardUserDefaults];
        [defaults setObject:data forKey:key];
        return YES;
    } else {
        if (_passThroughStorage) {
            return [_passThroughStorage controller:controller storeValue:value forKey:key securityLevel:securityLevel sharingType:sharingType];
        } else {
            MTR_LOG_ERROR("MTRDeviceControllerLocalTestStorage storeValue: shared type but no pass-through storage");
            return NO;
        }
    }
}

- (BOOL)controller:(MTRDeviceController *)controller
    removeValueForKey:(NSString *)key
        securityLevel:(MTRStorageSecurityLevel)securityLevel
          sharingType:(MTRStorageSharingType)sharingType
{
    if (sharingType == MTRStorageSharingTypeNotShared) {
        NSUserDefaults * defaults = [NSUserDefaults standardUserDefaults];
        [defaults removeObjectForKey:key];
        return YES;
    } else {
        if (_passThroughStorage) {
            return [_passThroughStorage controller:controller removeValueForKey:key securityLevel:securityLevel sharingType:sharingType];
        } else {
            MTR_LOG_ERROR("MTRDeviceControllerLocalTestStorage removeValueForKey: shared type but no pass-through storage");
            return NO;
        }
    }
}

- (NSDictionary<NSString *, id<NSSecureCoding>> *)valuesForController:(MTRDeviceController *)controller securityLevel:(MTRStorageSecurityLevel)securityLevel sharingType:(MTRStorageSharingType)sharingType
{
    if (sharingType == MTRStorageSharingTypeNotShared) {
        NSUserDefaults * defaults = [NSUserDefaults standardUserDefaults];
        return [defaults dictionaryRepresentation];
    } else {
        if (_passThroughStorage && [_passThroughStorage respondsToSelector:@selector(valuesForController:securityLevel:sharingType:)]) {
            return [_passThroughStorage valuesForController:controller securityLevel:securityLevel sharingType:sharingType];
        } else {
            MTR_LOG_ERROR("MTRDeviceControllerLocalTestStorage valuesForController: shared type but no pass-through storage");
            return nil;
        }
    }
}

- (BOOL)controller:(MTRDeviceController *)controller storeValues:(NSDictionary<NSString *, id<NSSecureCoding>> *)values securityLevel:(MTRStorageSecurityLevel)securityLevel sharingType:(MTRStorageSharingType)sharingType
{
    if (sharingType == MTRStorageSharingTypeNotShared) {
        NSUserDefaults * defaults = [NSUserDefaults standardUserDefaults];
        BOOL success = YES;
        for (NSString * key in values) {
            NSError * error = nil;
            NSData * data = [NSKeyedArchiver archivedDataWithRootObject:values[key] requiringSecureCoding:YES error:&error];
            if (error) {
                MTR_LOG_ERROR("MTRDeviceControllerLocalTestStorage storeValues: failed to convert value object to data %@", error);
                success = NO;
                continue;
            }
            [defaults setObject:data forKey:key];
        }
        return success;
    } else {
        if (_passThroughStorage && [_passThroughStorage respondsToSelector:@selector(controller:storeValues:securityLevel:sharingType:)]) {
            return [_passThroughStorage controller:controller storeValues:values securityLevel:securityLevel sharingType:sharingType];
        } else {
            MTR_LOG_ERROR("MTRDeviceControllerLocalTestStorage valuesForController: shared type but no pass-through storage");
            return NO;
        }
    }
}
@end