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import Foundation
struct NjallaClient: Sendable, Equatable {
private let token: String
private let endpoint = URL(string: "https://njal.la/api/1/")!
init(token: String) {
self.token = token
}
func call<T: Decodable>(_ method: String, params: [String: Any] = [:]) async throws -> T {
var request = URLRequest(url: endpoint)
request.httpMethod = "POST"
request.setValue("application/json", forHTTPHeaderField: "Content-Type")
request.setValue("application/json", forHTTPHeaderField: "Accept")
request.setValue("Njalla \(token)", forHTTPHeaderField: "Authorization")
let body: [String: Any] = [
"jsonrpc": "2.0",
"method": method,
"params": params,
"id": "1"
]
request.httpBody = try JSONSerialization.data(withJSONObject: body)
let (data, response) = try await URLSession.shared.data(for: request)
_ = (response as? HTTPURLResponse)?.statusCode ?? -1
let decoder = JSONDecoder()
let envelope = try decoder.decode(RPCResponse<T>.self, from: data)
if let error = envelope.error {
throw NjallaError.api(message: error.message)
}
guard let result = envelope.result else {
throw NjallaError.missingResult
}
return result
}
func listDomains() async throws -> [Domain] {
let response: DomainListResponse = try await call("list-domains")
return response.domains
}
func getDomain(named domain: String) async throws -> Domain {
try await call("get-domain", params: ["domain": domain])
}
func editDomain(named domain: String, request: DomainUpdateRequest) async throws -> Domain {
var params = request.params
params["domain"] = domain
return try await call("edit-domain", params: params)
}
func listForwards(for domain: String) async throws -> [EmailForward] {
let response: ForwardListResponse = try await call("list-forwards", params: ["domain": domain])
return response.forwards
}
func addForward(forward: EmailForward) async throws {
let _: EmptyResult = try await call(
"add-forward",
params: [
"domain": forward.domain,
"from": forward.from,
"to": forward.to
]
)
}
func removeForward(_ forward: EmailForward) async throws {
let _: EmptyResult = try await call(
"remove-forward",
params: [
"domain": forward.domain,
"from": forward.from,
"to": forward.to
]
)
}
func listRecords(for domain: String) async throws -> [DNSRecord] {
let response: RecordListResponse = try await call("list-records", params: ["domain": domain])
return response.records.map { record in
record.domain.isEmpty ? record.withDomain(domain) : record
}
}
func addRecord(for domain: String, draft: DNSRecordDraft) async throws -> DNSRecord {
try await call("add-record", params: draft.params(domain: domain))
}
func editRecord(for domain: String, id: String, draft: DNSRecordDraft) async throws -> DNSRecord {
try await call("edit-record", params: draft.params(domain: domain, id: id))
}
func removeRecord(_ record: DNSRecord) async throws -> [DNSRecord] {
let params: [String: Any] = [
"domain": record.domain,
"id": record.id,
"name": record.name,
"type": record.type
]
let response: RecordListResponse = try await call("remove-record", params: params)
return response.records.map { item in
item.domain.isEmpty ? item.withDomain(record.domain) : item
}
}
func listTokens() async throws -> [APIToken] {
let response: TokenListResponse = try await call("list-tokens")
return response.tokens
}
func addToken(request: TokenCreateRequest) async throws {
let _: EmptyResult = try await call("add-token", params: request.params)
}
func removeToken(key: String) async throws {
let _: EmptyResult = try await call("remove-token", params: ["key": key])
}
func getBalance() async throws -> WalletBalance {
try await call("get-balance")
}
}
enum NjallaError: LocalizedError {
case api(message: String)
case missingResult
case networkFailure
var errorDescription: String? {
switch self {
case .api(let message):
return message
case .missingResult:
return "The API response did not include a result."
case .networkFailure:
return "Network request failed. Check your connection and try again."
}
}
}
extension Error {
var userFacingMessage: String {
if let njallaError = self as? NjallaError {
return njallaError.localizedDescription
}
if let urlError = self as? URLError {
switch urlError.code {
case .cancelled:
return urlError.localizedDescription
default:
return NjallaError.networkFailure.localizedDescription
}
}
return localizedDescription
}
}
private struct RPCResponse<Result: Decodable>: Decodable {
let result: Result?
let error: RPCError?
}
private struct RPCError: Decodable {
let code: Int
let message: String
}
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