310 lines
12 KiB
Swift
310 lines
12 KiB
Swift
import Foundation
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enum ContactsServiceError: LocalizedError {
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case unexpectedStatus(String)
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case decoding(debugDescription: String)
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case encoding(String)
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var errorDescription: String? {
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switch self {
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case .unexpectedStatus(let message):
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return message
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case .decoding(let debugDescription):
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return AppConfig.DEBUG
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? debugDescription
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: NSLocalizedString("Не удалось загрузить контакты.", comment: "Contacts service decoding error")
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case .encoding(let message):
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return message
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}
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}
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}
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struct ContactPayload: Decodable {
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let userId: UUID
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let login: String?
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let fullName: String?
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let customName: String?
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let friendCode: Bool
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let createdAt: Date
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}
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struct ContactsListPayload: Decodable {
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let items: [ContactPayload]
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let hasMore: Bool
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}
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private struct ContactCreateRequestPayload: Encodable {
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let userId: UUID?
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let login: String?
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let friendCode: String?
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let customName: String?
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}
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private struct ContactDeleteRequestPayload: Encodable {
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let userId: UUID
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}
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final class ContactsService {
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private let client: NetworkClient
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private let decoder: JSONDecoder
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private let encoder: JSONEncoder
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init(client: NetworkClient = .shared) {
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self.client = client
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self.decoder = JSONDecoder()
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self.decoder.keyDecodingStrategy = .convertFromSnakeCase
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self.decoder.dateDecodingStrategy = .custom(Self.decodeDate)
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self.encoder = JSONEncoder()
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self.encoder.keyEncodingStrategy = .convertToSnakeCase
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}
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func fetchContacts(limit: Int, offset: Int, completion: @escaping (Result<ContactsListPayload, Error>) -> Void) {
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client.request(
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path: "/v1/user/contact/list",
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method: .get,
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query: [
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"limit": String(limit),
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"offset": String(offset)
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],
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requiresAuth: true
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) { [decoder] result in
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switch result {
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case .success(let response):
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do {
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let apiResponse = try decoder.decode(APIResponse<ContactsListPayload>.self, from: response.data)
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guard apiResponse.status == "fine" else {
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let message = apiResponse.detail ?? NSLocalizedString("Не удалось загрузить контакты.", comment: "Contacts service unexpected status")
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completion(.failure(ContactsServiceError.unexpectedStatus(message)))
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return
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}
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completion(.success(apiResponse.data))
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} catch {
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let debugMessage = Self.describeDecodingError(error: error, data: response.data)
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if AppConfig.DEBUG {
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print("[ContactsService] decode contacts failed: \(debugMessage)")
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}
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completion(.failure(ContactsServiceError.decoding(debugDescription: debugMessage)))
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}
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case .failure(let error):
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if case let NetworkError.server(_, data) = error,
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let data,
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let message = Self.errorMessage(from: data) {
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completion(.failure(ContactsServiceError.unexpectedStatus(message)))
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return
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}
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completion(.failure(error))
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}
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}
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}
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func fetchContacts(limit: Int, offset: Int) async throws -> ContactsListPayload {
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try await withCheckedThrowingContinuation { continuation in
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fetchContacts(limit: limit, offset: offset) { result in
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continuation.resume(with: result)
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}
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}
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}
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func addContact(userId: UUID, customName: String?, completion: @escaping (Result<ContactPayload, Error>) -> Void) {
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let request = ContactCreateRequestPayload(
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userId: userId,
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login: nil,
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friendCode: nil,
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customName: customName
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)
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guard let body = try? encoder.encode(request) else {
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let message = NSLocalizedString("Не удалось подготовить данные запроса.", comment: "Contacts service encoding error")
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completion(.failure(ContactsServiceError.encoding(message)))
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return
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}
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client.request(
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path: "/v1/user/contact/add",
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method: .post,
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body: body,
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requiresAuth: true
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) { [decoder] result in
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switch result {
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case .success(let response):
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do {
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let apiResponse = try decoder.decode(APIResponse<ContactPayload>.self, from: response.data)
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guard apiResponse.status == "fine" else {
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let message = apiResponse.detail ?? NSLocalizedString("Не удалось добавить контакт.", comment: "Contacts service add unexpected status")
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completion(.failure(ContactsServiceError.unexpectedStatus(message)))
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return
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}
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completion(.success(apiResponse.data))
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} catch {
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let debugMessage = Self.describeDecodingError(error: error, data: response.data)
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if AppConfig.DEBUG {
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print("[ContactsService] decode contact add failed: \(debugMessage)")
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}
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completion(.failure(ContactsServiceError.decoding(debugDescription: debugMessage)))
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}
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case .failure(let error):
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if case let NetworkError.server(_, data) = error,
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let data,
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let message = Self.errorMessage(from: data) {
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completion(.failure(ContactsServiceError.unexpectedStatus(message)))
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return
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}
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completion(.failure(error))
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}
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}
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}
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func addContact(userId: UUID, customName: String?) async throws -> ContactPayload {
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try await withCheckedThrowingContinuation { continuation in
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addContact(userId: userId, customName: customName) { result in
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continuation.resume(with: result)
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}
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}
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}
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func removeContact(userId: UUID, completion: @escaping (Result<Void, Error>) -> Void) {
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let request = ContactDeleteRequestPayload(userId: userId)
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guard let body = try? encoder.encode(request) else {
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let message = NSLocalizedString("Не удалось подготовить данные запроса.", comment: "Contacts service encoding error")
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completion(.failure(ContactsServiceError.encoding(message)))
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return
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}
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client.request(
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path: "/v1/user/contact/remove",
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method: .delete,
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body: body,
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requiresAuth: true
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) { [decoder] result in
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switch result {
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case .success(let response):
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do {
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let apiResponse = try decoder.decode(APIResponse<MessagePayload>.self, from: response.data)
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guard apiResponse.status == "fine" else {
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let message = apiResponse.detail ?? NSLocalizedString("Не удалось удалить контакт.", comment: "Contacts service delete unexpected status")
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completion(.failure(ContactsServiceError.unexpectedStatus(message)))
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return
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}
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completion(.success(()))
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} catch {
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let debugMessage = Self.describeDecodingError(error: error, data: response.data)
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if AppConfig.DEBUG {
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print("[ContactsService] decode contact delete failed: \(debugMessage)")
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}
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completion(.failure(ContactsServiceError.decoding(debugDescription: debugMessage)))
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}
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case .failure(let error):
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if case let NetworkError.server(_, data) = error,
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let data,
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let message = Self.errorMessage(from: data) {
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completion(.failure(ContactsServiceError.unexpectedStatus(message)))
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return
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}
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completion(.failure(error))
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}
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}
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}
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func removeContact(userId: UUID) async throws {
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try await withCheckedThrowingContinuation { continuation in
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removeContact(userId: userId) { result in
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continuation.resume(with: result)
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}
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}
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}
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private static func decodeDate(from decoder: Decoder) throws -> Date {
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let container = try decoder.singleValueContainer()
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let string = try container.decode(String.self)
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if let date = iso8601WithFractionalSeconds.date(from: string) {
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return date
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}
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if let date = iso8601Simple.date(from: string) {
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return date
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}
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throw DecodingError.dataCorruptedError(
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in: container,
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debugDescription: "Невозможно декодировать дату: \(string)"
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)
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}
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private static func describeDecodingError(error: Error, data: Data) -> String {
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var parts: [String] = []
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if let decodingError = error as? DecodingError {
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parts.append(decodingDescription(from: decodingError))
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} else {
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parts.append(error.localizedDescription)
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}
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if let payload = truncatedPayload(from: data) {
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parts.append("payload=\(payload)")
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}
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return parts.joined(separator: "\n")
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}
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private static func decodingDescription(from error: DecodingError) -> String {
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switch error {
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case .typeMismatch(let type, let context):
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return "Type mismatch for \(type) at \(codingPath(from: context)): \(context.debugDescription)"
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case .valueNotFound(let type, let context):
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return "Value not found for \(type) at \(codingPath(from: context)): \(context.debugDescription)"
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case .keyNotFound(let key, let context):
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return "Missing key '\(key.stringValue)' at \(codingPath(from: context)): \(context.debugDescription)"
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case .dataCorrupted(let context):
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return "Corrupted data at \(codingPath(from: context)): \(context.debugDescription)"
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@unknown default:
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return error.localizedDescription
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}
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}
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private static func codingPath(from context: DecodingError.Context) -> String {
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let path = context.codingPath.map { $0.stringValue }.filter { !$0.isEmpty }
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return path.isEmpty ? "root" : path.joined(separator: ".")
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}
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private static func truncatedPayload(from data: Data, limit: Int = 512) -> String? {
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guard let string = String(data: data, encoding: .utf8)?.trimmingCharacters(in: .whitespacesAndNewlines),
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!string.isEmpty else {
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return nil
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}
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if string.count <= limit {
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return string
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}
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let index = string.index(string.startIndex, offsetBy: limit)
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return String(string[string.startIndex..<index]) + "…"
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}
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private static func errorMessage(from data: Data) -> String? {
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if let apiError = try? JSONDecoder().decode(ErrorResponse.self, from: data) {
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if let detail = apiError.detail, !detail.isEmpty {
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return detail
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}
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if let message = apiError.data?.message, !message.isEmpty {
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return message
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}
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}
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if let string = String(data: data, encoding: .utf8), !string.isEmpty {
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return string
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}
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return nil
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}
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private static let iso8601WithFractionalSeconds: ISO8601DateFormatter = {
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let formatter = ISO8601DateFormatter()
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formatter.formatOptions = [.withInternetDateTime, .withFractionalSeconds]
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return formatter
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}()
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private static let iso8601Simple: ISO8601DateFormatter = {
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let formatter = ISO8601DateFormatter()
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formatter.formatOptions = [.withInternetDateTime]
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return formatter
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}()
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}
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