import Foundation

struct HistoryRequest: Request {
    typealias Response = HistoryResponse
    
    let path: String
    let queryItems: [URLQueryItem]
    
    init(roomId: String, roomType: String?, latest: Date) {
        path = "api/v1/\(RoomType.from(roomType).api).history"
        
        queryItems = [
            URLQueryItem(name: "roomId", value: roomId),
            URLQueryItem(name: "latest", value: latest.iso8601withFractionalSeconds)
        ]
    }
}

fileprivate enum RoomType: String {
    case direct = "d"
    case group = "p"
    case channel = "c"
    case livechat = "l"
    
    static func from(_ rawValue: String?) -> Self {
        guard let rawValue, let type = RoomType(rawValue: rawValue) else {
            return .channel
        }
        
        return type
    }
    
    var api: String {
        switch self {
        case .direct:
            return "im"
        case .group:
            return "groups"
        case .channel, .livechat:
            return "channels"
        }
    }
}