//
//  FilterV1.swift
//  Pachyderm
//
//  Created by Shadowfacts on 9/9/18.
//  Copyright © 2018 Shadowfacts. All rights reserved.
//

import Foundation

public struct FilterV1: Decodable {
    public let id: String
    public let phrase: String
    private let context: [String]
    public let expiresAt: Date?
    public let irreversible: Bool
    public let wholeWord: Bool
    
    public var contexts: [Context] {
        get {
            return context.compactMap(Context.init)
        }
    }
    
    public static func update(_ filterID: String, phrase: String, context: [Context], irreversible: Bool, wholeWord: Bool, expiresIn: TimeInterval?) -> Request<FilterV1> {
        return Request<FilterV1>(method: .put, path: "/api/v1/filters/\(filterID)", body: ParametersBody([
            "phrase" => phrase,
            "whole_word" => wholeWord,
            "expires_in" => expiresIn,
        ] + "context" => context.contextStrings))
    }
    
    public static func delete(_ filterID: String) -> Request<Empty> {
        return Request<Empty>(method: .delete, path: "/api/v1/filters/\(filterID)")
    }
    
    private enum CodingKeys: String, CodingKey {
        case id
        case phrase
        case context
        case expiresAt = "expires_at"
        case irreversible
        case wholeWord = "whole_word"
    }
}

extension FilterV1 {
    public enum Context: String, Decodable, CaseIterable {
        case home
        case notifications
        case `public`
        case thread
        case account
    }
}

extension Array where Element == FilterV1.Context {
    var contextStrings: [String] {
        return map { $0.rawValue }
    }
}