Gemini/GeminiProtocol/GeminiRequest.swift

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

import Foundation

public struct GeminiRequest {
    public let url: URL
    
    public init(url: URL) throws {
        guard var components = URLComponents(url: url, resolvingAgainstBaseURL: true) else { throw Error.invalidURL }
        guard components.scheme == "gemini" else { throw Error.wrongProtocol }
        
        if components.port == nil {
            components.port = 1965
        }
        
        self.url = components.url!
        
        if self.url.absoluteString.count > 1024 {
            throw Error.urlTooLong
        }
    }
    
    var data: Data {
        var data = url.absoluteString.data(using: .utf8)!
        data.append(contentsOf: [13, 10]) // <CR><LF>
        return data
    }
}

public extension GeminiRequest {
    enum Error: Swift.Error {
        case invalidURL
        case wrongProtocol
        case urlTooLong
    }
}