//
//  CharacterDetailViewModel.swift
//  SodaLive
//
//  Created by klaus on 9/1/25.
//
import Foundation
import Combine
import Moya

final class CharacterDetailViewModel: ObservableObject {
    // MARK: - Published State
    @Published private(set) var characterDetail: CharacterDetailResponse?
    
    @Published var isLoading: Bool = false
    @Published var errorMessage: String = ""
    @Published var isShowPopup = false
    @Published var characterId: Int = 0 {
        didSet {
            if characterId > 0 {
                getCharacterDetail(characterId: characterId)
            }
        }
    }
    
    // MARK: - Private
    private let repository = CharacterDetailRepository()
    private var subscription = Set<AnyCancellable>()
    
    // MARK: - Public Methods
    func getCharacterDetail(characterId: Int) {
        isLoading = true
        
        repository.getCharacterDetail(characterId: characterId)
            .receive(on: DispatchQueue.main)
            .sink { result in
                switch result {
                case .finished:
                    DEBUG_LOG("finish")
                case .failure(let error):
                    ERROR_LOG(error.localizedDescription)
                }
            } receiveValue: { [weak self] response in
                let responseData = response.data
                self?.isLoading = false
                
                do {
                    let jsonDecoder = JSONDecoder()
                    let decoded = try jsonDecoder.decode(ApiResponse<CharacterDetailResponse>.self, from: responseData)
                    
                    if let data = decoded.data, decoded.success {
                        self?.characterDetail = data
                    } else {
                        if let message = decoded.message {
                            self?.errorMessage = message
                        } else {
                            self?.errorMessage = I18n.Common.commonError
                        }
                        
                        self?.isShowPopup = true
                    }
                } catch {
                    ERROR_LOG(String(describing: error))
                    self?.errorMessage = I18n.Common.commonError
                    self?.isShowPopup = true
                }
            }
            .store(in: &subscription)
    }
    
    func createChatRoom(onSuccess: @escaping (Int) -> Void) {
        isLoading = true
        
        repository.createChatRoom(characterId: characterId)
            .receive(on: DispatchQueue.main)
            .sink { result in
                switch result {
                case .finished:
                    DEBUG_LOG("finish")
                case .failure(let error):
                    ERROR_LOG(error.localizedDescription)
                }
            } receiveValue: { [weak self] response in
                let responseData = response.data
                self?.isLoading = false
                
                do {
                    let jsonDecoder = JSONDecoder()
                    let decoded = try jsonDecoder.decode(ApiResponse<CreateChatRoomResponse>.self, from: responseData)
                    
                    if let data = decoded.data, decoded.success {
                        onSuccess(data.chatRoomId)
                    } else {
                        if let message = decoded.message {
                            self?.errorMessage = message
                        } else {
                            self?.errorMessage = I18n.Common.commonError
                        }
                        
                        self?.isShowPopup = true
                    }
                } catch {
                    ERROR_LOG(String(describing: error))
                    self?.errorMessage = I18n.Common.commonError
                    self?.isShowPopup = true
                }
            }
            .store(in: &subscription)
    }
}