dependencies: [
    .package(url: "https://github.com/SvenTiigi/EUDCCKit.git", from: "0.0.1")
]

import EUDCC

// The EU Digital COVID Certificate model
let eudcc: EUDCC

// Access content of EUDCC
switch eudcc.content {
case .vaccination(let vaccination):
    print("Vaccination", vaccination)
case .test(let test):
    print("Test", test)
case .recovery(let recovery):
    print("Recovery", recovery)
}

import EUDCCDecoder

// Initialize an EUDCCDecoder
let decoder = EUDCCDecoder()

// The Base-45 encoded EU Digital COVID Certificate from a QR-Code
let qrCodeContent = "HC1:..."

// Decode EUDCC from QR-Code
let decodingResult = decoder.decode(from: qrCodeContent)

// Switch on decoding result
switch decodingResult {
case .success(let eudcc):
    // Successfully decoded Digital COVID Certificate
    print("EU Digital COVID Certificate", eudcc)
case .failure(let decodingError):
    // Decoding failed with error
    print("Failed to decode EUDCC", decodingError)
}

import EUDCCVerifier

// Initialize an EUDDCCVerifier
let verifier = EUDCCVerifier(
    trustService: EUCentralEUDCCTrustService()
)

// Verify EU Digital COVID Certificate
verifier.verify(eudcc: eudcc) { verificationResult in
    // Switch on verification result
    switch verificationResult {
    case .success(let trustCertificate):
        print("Cryptographically valid", trustCertificate)
    case .invald:
        print("Invalid EUDCC")
    case .failure(let error):
        print("Error occured during verification", error)
    }
}

import EUDCCValidator

// Initialize an EUDCCValidator
let validator = EUDCCValidator()

// Validate EU Digital COVID Certificate
let validationResult = validator.validate(
    eudcc: eudcc,
    rule: .isFullyImmunized() && !.isVaccinationExpired()
)

// Switch on validation result
switch validationResult {
case .success:
    // Successfully validated EU Digital COVID Certificate
    print("Successfully validated")
case .failure(let validationError):
    // Validation failure
    print("Validation failed", validationError)
}

import EUDCC

// Vaccination
let vaccination: EUDCC.Vaccination? = eudcc.vaccination

// Test
let test: EUDCC.Test? = eudcc.test

// Recovery
let recovery: EUDCC.Recovery? = eudcc.recovery

import EUDCC

let vaccineMedicinalProduct: EUDCC.Vaccination.VaccineMedicinalProduct

// Switch on WellKnownValue of VaccineMedicinalProduct
switch vaccineMedicinalProduct.wellKnownValue {
    case .covid19VaccineModerna:
        break
    case .vaxzevria:
        break
    default:
        break
}

import EUDCC

let encoder = JSONEncoder()

encoder.userInfo = [
    // Skip encoding CryptographicSignature
    EUDCC.EncoderUserInfoKeys.skipCryptographicSignature: true,
    // Skip encoding Base-45 representation
    EUDCC.EncoderUserInfoKeys.skipBase45Representation: true,
]

let jsonData = try encoder.encode(eudcc)

import EUDCCDecoder

let eudccDecoder = EUDCCDecoder()

// Decode from Base-45 encoded String
let eudccBase45EncodedString: String
let stringDecodingResult = eudccDecoder.decode(
    from: eudccBase45EncodedString
)

// Decode from Base-45 encoded Data
let eudccBase45EncodedData: Data
let dataDecodingResult = eudccDecoder.decode(
    from: eudccBase45EncodedData
)

import EUDCCDecoder

let decodingResult = EUDCC.decode(from: "HC1:...")

import EUDCC
import EUDCCVerifier

struct SpecificEUDCCTrustService: EUDCCTrustService {
    
    /// Retrieve EUDCC TrustCertificates
    /// - Parameter completion: The completion closure
    func getTrustCertificates(
        completion: @escaping (Result<[EUDCC.TrustCertificate], Error>) -> Void
    ) {
        // TODO: Retrieve TrustCertificates and invoke completion handler
    }
    
}

let eudccVerifier = EUDCCVerifier(
    trustService: SpecificEUDCCTrustService()
)

let trustService = GroupableEUDCCTrustService(
    trustServices: [
        EUCentralEUDCCTrustService(),
        RobertKochInstituteEUDCCTrustService()
    ]
)

trustService.getTrustCertificates { certificates in
    // ...
}

import EUDCC
import EUDCCVerifier

let eudcc: EUDCC

eudcc.verify(
    using: EUDCCVerifier(
        trustService: EUCentralEUDCCTrustService()
    )
) { verificationResult in
    switch verificationResult {
    case .success(let trustCertificate):
        break
    case .invald:
        break
    case .failure(let error):
        break
    }
}

import EUDCC
import EUDCCValidator

// Simple EUDCC ValidationRule instantiation
let validationRule = EUDCC.ValidationRule { eudcc in
    // Process EUDCC and return Bool result
}

// EUDCC ValidationRule with Tag in order to uniquely identify a ValidationRule
let isVaccinationComplete = EUDCC.ValidationRule(
    tag: "is-vaccination-complete"
) { eudcc in
    eudcc.vaccination?.doseNumber == eudcc.vaccination?.totalSeriesOfDoses
}

import EUDCC
import EUDCCValidator

let eudcc: EUDCC
let validator = EUDCCValidator()

// Is fully immunized
validator.validate(
    eudcc: eudcc, 
    rule: .isFullyImmunized(minimumDaysPast: 15)
)

// Is tested positive
validator.validate(
    eudcc: eudcc, 
    rule: .isTestedPositive
)

import EUDCC
import EUDCCValidator

let defaultValidationRule: EUDCC.ValidationRule = .if(
    .isVaccination,
    then: .isFullyImmunized() && .isWellKnownVaccineMedicinalProduct && !.isVaccinationExpired(),
    else: .if(
        .isTest,
        then: .isTestedNegative && .isTestValid(),
        else: .if(
            .isRecovery,
            then: .isRecoveryValid,
            else: .constant(false)
        )
    )
)

import EUDCC
import EUDCCValidator

let eudcc: EUDCC

let validationRule = eudcc.validate(
    rule: .isWellKnownVaccineMedicinalProduct
)