import Foundation

@MainActor
public final class ImSDK {

    public static let shared = ImSDK()
    private var client: ImClient?

    private init() {}

    public func login(userId: String, nickname: String? = nil, avatar: String? = nil) async throws {
        let config = XuqmSDK.shared.requireConfig()

        struct LoginResponse: Decodable { let token: String }
        var items = [URLQueryItem(name: "appId", value: config.appId),
                     URLQueryItem(name: "userId", value: userId)]
        if let n = nickname { items.append(URLQueryItem(name: "nickname", value: n)) }
        if let a = avatar { items.append(URLQueryItem(name: "avatar", value: a)) }

        let res: LoginResponse = try await ApiClient.shared.request(
            path: "/api/im/auth/login", method: "POST", queryItems: items
        )
        XuqmSDK.shared.tokenStore?.save(res.token)
        client = ImClient(wsURL: config.imWebSocketURL, token: res.token, appId: config.appId)
        client?.connect()
    }

    public func setDelegate(_ delegate: ImEventDelegate) {
        client?.delegate = delegate
    }

    public func sendMessage(toId: String, chatType: ChatType, msgType: MsgType, content: String) {
        client?.sendMessage(toId: toId, chatType: chatType, msgType: msgType, content: content)
    }

    public func disconnect() {
        client?.disconnect()
        client = nil
    }
}