//
//  GeminiResponseHeader.swift
//  Gemini
//
//  Created by Shadowfacts on 7/12/20.
//

import Foundation

public struct GeminiResponseHeader {
    public let status: StatusCode
    public let meta: String
}

public extension GeminiResponseHeader {
    enum StatusCode: Int {
        // All statuses and subtypes
        case input = 10
        case sensitiveInput = 11
        case success = 20
        case temporaryRedirect = 30
        case permanentRedirect = 31
        case temporaryFailure = 40
        case serverUnavailable = 41
        case cgiError = 42
        case proxyError = 43
        case slowDown = 44
        case permanentFailure = 50
        case notFound = 51
        case gone = 52
        case proxyRequestRefused = 53
        case badRequest = 59
        case clientCertificateRequested = 60
        case certificateNotAuthorised = 61
        case certificateNotValid = 62
        
        // Status type helpers
        var isInput: Bool                     { rawValue / 10 == 1 }
        var isSuccess: Bool                   { rawValue / 10 == 2 }
        var isRedirect: Bool                  { rawValue / 10 == 3 }
        var isTemporaryFailure: Bool          { rawValue / 10 == 4 }
        var isPermanentFailure: Bool          { rawValue / 10 == 5 }
        var isClientCertificateRequired: Bool { rawValue / 10 == 6 }
        
        // Other helpers
        var isFailure: Bool { isTemporaryFailure || isPermanentFailure }
    }
}

extension GeminiResponseHeader.StatusCode: CustomStringConvertible {
    public var description: String {
        switch self {
        case .input:
            return "\(rawValue): input"
        case .sensitiveInput:
            return "\(rawValue): sensitiveInput"
        case .success:
            return "\(rawValue): success"
        case .temporaryRedirect:
            return "\(rawValue): temporaryRedirect"
        case .permanentRedirect:
            return "\(rawValue): permanentRedirect"
        case .temporaryFailure:
            return "\(rawValue): temporaryFailure"
        case .serverUnavailable:
            return "\(rawValue): serverUnavailable"
        case .cgiError:
            return "\(rawValue): cgiError"
        case .proxyError:
            return "\(rawValue): proxyError"
        case .slowDown:
            return "\(rawValue): slowDown"
        case .permanentFailure:
            return "\(rawValue): permanentFailure"
        case .notFound:
            return "\(rawValue): notFound"
        case .gone:
            return "\(rawValue): gone"
        case .proxyRequestRefused:
            return "\(rawValue): proxyRequestRefused"
        case .badRequest:
            return "\(rawValue): badRequest"
        case .clientCertificateRequested:
            return "\(rawValue): clientCertificateRequested"
        case .certificateNotAuthorised:
            return "\(rawValue): certificateNotAuthorised"
        case .certificateNotValid:
            return "\(rawValue): certificateNotValid"
        }
    }
}