//
//  MockServices.swift
//  secant
//
//  Created by Francisco Gindre on 8/6/21.
//

import Foundation

class MockServices: Services {
    init(){}
    var networkProvider: ZcashNetworkProvider {
        MockNetworkProvider()
    }
    var seedHandler: MnemonicSeedPhraseHandling {
        MockMnemonicPhraseHandling()
    }
    
    var keyStorage: KeyStoring {
        MockKeyStoring()
    }
}

class MockNetworkProvider: ZcashNetworkProvider {
    func currentNetwork() -> ZcashNetwork {
        ZcashMainnet()
    }
}

class MockMnemonicPhraseHandling: MnemonicSeedPhraseHandling {
    
    class TestSeed {
        
        /**
         test account: "still champion voice habit trend flight survey between bitter process artefact blind carbon truly provide dizzy crush flush breeze blouse charge solid fish spread"
         */
        let seedString = Data(base64Encoded: "9VDVOZZZOWWHpZtq1Ebridp3Qeux5C+HwiRR0g7Oi7HgnMs8Gfln83+/Q1NnvClcaSwM4ADFL1uZHxypEWlWXg==")!
        
        func seed() -> [UInt8] {
            [UInt8](seedString)
        }
    }
    
    func randomMnemonic() throws -> String {
        "still champion voice habit trend flight survey between bitter process artefact blind carbon truly provide dizzy crush flush breeze blouse charge solid fish spread"
    }
    
    func randomMnemonicWords() throws -> [String] {
        "still champion voice habit trend flight survey between bitter process artefact blind carbon truly provide dizzy crush flush breeze blouse charge solid fish spread".components(separatedBy: " ")
    }
    
    func toSeed(mnemonic: String) throws -> [UInt8] {
        TestSeed().seed()
    }
    
    func asWords(mnemonic: String) throws -> [String] {
        "still champion voice habit trend flight survey between bitter process artefact blind carbon truly provide dizzy crush flush breeze blouse charge solid fish spread".components(separatedBy: " ")
    }
    
    func isValid(mnemonic: String) throws {}
    
    
}

class MockKeyStoring: KeyStoring {
    var birthday: BlockHeight?
    var phrase: String?
    func importBirthday(_ height: BlockHeight) throws {
        guard birthday == nil else {
            throw KeyStoringError.alreadyImported
        }
        birthday = height
    }
    
    func exportBirthday() throws -> BlockHeight {
        guard let b = birthday else {
            throw KeyStoringError.uninitializedWallet
        }
        return b
    }
    
    func importPhrase(bip39 phrase: String) throws {
        guard self.phrase == nil else {
            throw KeyStoringError.alreadyImported
        }
        self.phrase = phrase
    }
    
    func exportPhrase() throws -> String {
        guard let p = self.phrase else {
            throw KeyStoringError.uninitializedWallet
        }
        return p
    }
    
    var keysPresent: Bool {
        return self.phrase != nil && self.birthday != nil
    }
    
    func nukePhrase() {
        self.phrase = nil
    }
    
    func nukeBirthday() {
        self.birthday = nil
    }
    
    func nukeWallet() {
        nukePhrase()
        nukeBirthday()
    }
    
    
}