/**
 *
 *    Copyright (c) 2020 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 <Foundation/Foundation.h>

NS_ASSUME_NONNULL_BEGIN

typedef NS_OPTIONS(NSUInteger, MTRDiscoveryCapabilities) {
    MTRDiscoveryCapabilitiesUnknown = 0, // Device capabilties are not known
                                         // (e.g. all we have is a numeric code).
    MTRDiscoveryCapabilitiesSoftAP = 1 << 0, // Device supports WiFi softAP
    MTRDiscoveryCapabilitiesBLE = 1 << 1, // Device supports BLE
    MTRDiscoveryCapabilitiesOnNetwork = 1 << 2, // Device supports On Network setup

    MTRDiscoveryCapabilitiesAllMask
    = MTRDiscoveryCapabilitiesSoftAP | MTRDiscoveryCapabilitiesBLE | MTRDiscoveryCapabilitiesOnNetwork,
};

typedef NS_ENUM(NSUInteger, MTRCommissioningFlow) {
    MTRCommissioningFlowStandard = 0, // Device automatically enters commissioning mode upon power-up
    MTRCommissioningFlowUserActionRequired = 1, // Device requires a user interaction to enter commissioning mode
    MTRCommissioningFlowCustom = 2, // Commissioning steps should be retrieved from the distributed compliance ledger
    MTRCommissioningFlowInvalid = 3,
};

typedef NS_ENUM(NSUInteger, MTROptionalQRCodeInfoType) { MTROptionalQRCodeInfoTypeString, MTROptionalQRCodeInfoTypeInt32 };

/**
 * An optional information item present in the QR code the setup payload was
 * initialized from.
 */
@interface MTROptionalQRCodeInfo : NSObject
@property (nonatomic, assign) MTROptionalQRCodeInfoType infoType;
// The numeric value of the TLV tag for this information item.
@property (nonatomic, copy) NSNumber * tag;
// Exactly one of integerValue and stringValue will be non-nil, depending on the
// the value of "infoType".
@property (nonatomic, copy, nullable) NSNumber * integerValue;
@property (nonatomic, copy, nullable) NSString * stringValue;
@end

/**
 * A setup payload that can be created from a numeric code or QR code and
 * serialized to a numeric code or QR code, though serializing to QR code after
 * creating from numeric code will not work, because some required information
 * will be missing.
 */
@interface MTRSetupPayload : NSObject <NSSecureCoding>

@property (nonatomic, copy) NSNumber * version;
@property (nonatomic, copy) NSNumber * vendorID;
@property (nonatomic, copy) NSNumber * productID;
@property (nonatomic, assign) MTRCommissioningFlow commissioningFlow;
/**
 * The value of discoveryCapabilities is made up of the various MTRDiscoveryCapabilities flags.
 */
@property (nonatomic, assign) MTRDiscoveryCapabilities discoveryCapabilities;
@property (nonatomic, copy) NSNumber * discriminator;
/**
 * If hasShortDiscriminator is true, the discriminator value contains just the
 * high 4 bits of the full discriminator.  For example, if
 * hasShortDiscriminator is true and discriminator is 0xA, then the full
 * discriminator can be anything in the range 0xA00 t0 0xAFF.
 */
@property (nonatomic, assign) BOOL hasShortDiscriminator;
@property (nonatomic, copy) NSNumber * setupPasscode;

@property (nonatomic, copy, nullable) NSString * serialNumber;
- (NSArray<MTROptionalQRCodeInfo *> * _Nullable)getAllOptionalVendorData:(NSError * __autoreleasing *)error;

/**
 * Generate a random Matter-valid setup passcode.
 */
+ (NSNumber *)generateRandomSetupPasscode;

/**
 * Create an MTRSetupPayload with the given onboarding payload.
 *
 * Will return nil on errors (e.g. if the onboarding payload cannot be parsed).
 */
+ (MTRSetupPayload * _Nullable)setupPayloadWithOnboardingPayload:(NSString *)onboardingPayload
                                                           error:(NSError * __autoreleasing *)error;

/**
 * Initialize an MTRSetupPayload with the given passcode and discriminator.
 * This will pre-set version, product id, and vendor id to 0.
 */
- (instancetype)initWithSetupPasscode:(NSNumber *)setupPasscode discriminator:(NSNumber *)discriminator;

/** Get 11 digit manual entry code from the setup payload. */
- (NSString * _Nullable)manualEntryCode;

/**
 * Get a QR code from the setup payload.
 *
 * Returns nil on failure (e.g. if the setup payload does not have all the
 * information a QR code needs).
 */
- (NSString * _Nullable)qrCodeString;

// A setup payload must have a passcode and a discriminator at the very least.
- (instancetype)init NS_UNAVAILABLE;
+ (instancetype)new NS_UNAVAILABLE;

@end

NS_ASSUME_NONNULL_END