//
//  Copyright (c) 2018 Touch Instinct
//
//  Permission is hereby granted, free of charge, to any person obtaining a copy
//  of this software and associated documentation files (the Software), to deal
//  in the Software without restriction, including without limitation the rights
//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
//  copies of the Software, and to permit persons to whom the Software is
//  furnished to do so, subject to the following conditions:
//
//  The above copyright notice and this permission notice shall be included in
//  all copies or substantial portions of the Software.
//
//  THE SOFTWARE IS PROVIDED AS IS, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
//  THE SOFTWARE.
//

import Alamofire

public struct NetworkServiceConfiguration {

    /// Base api url string.
    public let baseUrl: String

    /// Timeout interval for requests.
    public let timeoutInterval: TimeInterval

    /// Default parameters encoding
    public let encoding: ParameterEncoding

    /// A dictionary of additional headers to send with requests.
    public let additionalHttpHeaders: HTTPHeaders

    /// Server trust policies.
    public var serverTrustPolicies: [String: ServerTrustPolicy]

    /// Acceptable status codes for validation
    public var acceptableStatusCodes: Set<Int> = Alamofire.SessionManager.defaultAcceptableStatusCodes

    /// Session configuration for potential fine tuning
    public var sessionConfiguration: URLSessionConfiguration

    public init(baseUrl: String,
                timeoutInterval: TimeInterval = 20,
                encoding: ParameterEncoding = URLEncoding.default,
                additionalHttpHeaders: HTTPHeaders = SessionManager.defaultHTTPHeaders) {

        self.baseUrl = baseUrl
        self.timeoutInterval = timeoutInterval
        self.encoding = encoding
        self.additionalHttpHeaders = additionalHttpHeaders

        sessionConfiguration = URLSessionConfiguration.default
        sessionConfiguration.timeoutIntervalForRequest = timeoutInterval
        sessionConfiguration.httpAdditionalHeaders = additionalHttpHeaders

        serverTrustPolicies = [baseUrl: .disableEvaluation]
    }

}

public extension NetworkServiceConfiguration {

    /// SessionManager constructed with given parameters (session configuration and trust policies)
    var sessionManager: SessionManager {
        return SessionManager(configuration: sessionConfiguration,
                              serverTrustPolicyManager: ServerTrustPolicyManager(policies: serverTrustPolicies))
    }

}