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import Combine
import Foundation
@MainActor
final class DomainViewModel: ObservableObject {
@Published private(set) var domains: [Domain] = []
@Published private(set) var selectedDomain: Domain?
@Published private(set) var records: [DNSRecord] = []
@Published private(set) var forwards: [EmailForward] = []
@Published private(set) var isLoadingDomains = false
@Published private(set) var isLoadingDetail = false
@Published private(set) var isLoadingRecords = false
@Published private(set) var isLoadingForwards = false
@Published private(set) var isSaving = false
@Published private(set) var hasLoadedDomains = false
@Published var domainsErrorMessage: String?
@Published var detailErrorMessage: String?
@Published var recordsErrorMessage: String?
@Published var forwardsErrorMessage: String?
@Published var mutationErrorMessage: String?
private var recordsRefreshTask: Task<Void, Never>?
func reset() {
domains = []
selectedDomain = nil
records = []
forwards = []
isLoadingDomains = false
isLoadingDetail = false
isLoadingRecords = false
isLoadingForwards = false
isSaving = false
hasLoadedDomains = false
domainsErrorMessage = nil
detailErrorMessage = nil
recordsErrorMessage = nil
forwardsErrorMessage = nil
mutationErrorMessage = nil
stopAutoRefreshRecords()
}
func loadDomains(client: NjallaClient) async {
guard !isLoadingDomains else { return }
isLoadingDomains = true
defer {
isLoadingDomains = false
hasLoadedDomains = true
}
do {
domains = try await client.listDomains().sorted {
$0.name.localizedCaseInsensitiveCompare($1.name) == .orderedAscending
}
domainsErrorMessage = nil
} catch is CancellationError {
return
} catch {
if (error as? URLError)?.code == .cancelled {
return
}
domainsErrorMessage = error.userFacingMessage
}
}
func loadDomainDetail(named name: String, client: NjallaClient) async {
guard !isLoadingDetail else { return }
isLoadingDetail = true
defer {
isLoadingDetail = false
}
do {
let domain = try await client.getDomain(named: name)
selectedDomain = domain
if let index = domains.firstIndex(where: { $0.name == name }) {
domains[index] = domain
}
detailErrorMessage = nil
} catch is CancellationError {
return
} catch {
if (error as? URLError)?.code == .cancelled {
return
}
detailErrorMessage = error.userFacingMessage
}
}
func updateDomain(named name: String, request: DomainUpdateRequest, client: NjallaClient) async throws {
guard !isSaving else { return }
isSaving = true
mutationErrorMessage = nil
do {
let updated = try await client.editDomain(named: name, request: request)
guard request.isSatisfied(by: updated) else {
throw NjallaError.api(message: "The API response did not reflect the requested domain changes.")
}
selectedDomain = updated
if let index = domains.firstIndex(where: { $0.name == updated.name }) {
domains[index] = updated
}
detailErrorMessage = nil
isSaving = false
Task {
await loadDomainDetail(named: updated.name, client: client)
}
} catch {
isSaving = false
mutationErrorMessage = error.userFacingMessage
throw error
}
}
func loadRecords(for domain: String, client: NjallaClient) async {
await fetchRecords(for: domain, client: client)
}
func startAutoRefreshRecords(for domain: String, client: NjallaClient) {
guard recordsRefreshTask == nil else { return }
recordsRefreshTask = Task { [weak self] in
guard let self else { return }
while !Task.isCancelled {
try? await Task.sleep(for: .seconds(5))
guard !Task.isCancelled else { return }
await self.fetchRecords(for: domain, client: client)
}
}
}
func stopAutoRefreshRecords() {
recordsRefreshTask?.cancel()
recordsRefreshTask = nil
}
func dismissMutationError() {
mutationErrorMessage = nil
}
func loadForwards(for domain: String, client: NjallaClient) async {
guard !isLoadingForwards else { return }
isLoadingForwards = true
defer {
isLoadingForwards = false
}
do {
forwards = try await client.listForwards(for: domain).sorted {
($0.from, $0.to) < ($1.from, $1.to)
}
forwardsErrorMessage = nil
} catch is CancellationError {
return
} catch {
if (error as? URLError)?.code == .cancelled {
return
}
forwardsErrorMessage = error.userFacingMessage
}
}
private func fetchRecords(for domain: String, client: NjallaClient) async {
guard !isLoadingRecords else { return }
isLoadingRecords = true
defer {
isLoadingRecords = false
}
do {
records = try await client.listRecords(for: domain).sorted {
($0.name, $0.type, $0.id) < ($1.name, $1.type, $1.id)
}
recordsErrorMessage = nil
} catch is CancellationError {
return
} catch {
if (error as? URLError)?.code == .cancelled {
return
}
recordsErrorMessage = error.userFacingMessage
}
}
func addRecord(for domain: String, draft: DNSRecordDraft, client: NjallaClient) async throws {
guard !isSaving else { return }
isSaving = true
mutationErrorMessage = nil
do {
let record = try await client.addRecord(for: domain, draft: draft).withDomain(domain)
guard record.id.isEmpty == false,
record.type == draft.type.rawValue,
record.name == draft.trimmedName else {
throw NjallaError.api(message: "The API response did not reflect the requested record change.")
}
records = sortedRecords(records + [record])
recordsErrorMessage = nil
isSaving = false
Task {
await loadRecords(for: domain, client: client)
}
} catch {
isSaving = false
mutationErrorMessage = error.userFacingMessage
throw error
}
}
func editRecord(for domain: String, recordID: String, draft: DNSRecordDraft, client: NjallaClient) async throws {
guard !isSaving else { return }
isSaving = true
mutationErrorMessage = nil
do {
let updatedRecord = try await client.editRecord(for: domain, id: recordID, draft: draft).withDomain(domain)
guard updatedRecord.id == recordID,
updatedRecord.type == draft.type.rawValue,
updatedRecord.name == draft.trimmedName else {
throw NjallaError.api(message: "The API response did not reflect the requested record change.")
}
if let index = records.firstIndex(where: { $0.id == recordID }) {
records[index] = updatedRecord
} else {
records.append(updatedRecord)
}
records = sortedRecords(records)
recordsErrorMessage = nil
isSaving = false
Task {
await loadRecords(for: domain, client: client)
}
} catch {
isSaving = false
mutationErrorMessage = error.userFacingMessage
throw error
}
}
func removeRecord(_ record: DNSRecord, client: NjallaClient) async throws {
guard !isSaving else { return }
isSaving = true
mutationErrorMessage = nil
do {
let updatedRecords = try await client.removeRecord(record)
guard updatedRecords.contains(where: { $0.id == record.id }) == false else {
throw NjallaError.api(message: "The API response indicates the record was not removed.")
}
records = sortedRecords(updatedRecords)
recordsErrorMessage = nil
isSaving = false
Task {
await loadRecords(for: record.domain, client: client)
}
} catch {
isSaving = false
mutationErrorMessage = error.userFacingMessage
throw error
}
}
func addForward(_ forward: EmailForward, client: NjallaClient) async throws {
guard !isSaving else { return }
isSaving = true
mutationErrorMessage = nil
do {
try await client.addForward(forward: forward)
if forwards.contains(forward) == false {
forwards = sortedForwards(forwards + [forward])
}
forwardsErrorMessage = nil
isSaving = false
Task {
await loadForwards(for: forward.domain, client: client)
}
} catch {
isSaving = false
mutationErrorMessage = error.userFacingMessage
throw error
}
}
func removeForward(_ forward: EmailForward, client: NjallaClient) async throws {
guard !isSaving else { return }
isSaving = true
mutationErrorMessage = nil
do {
try await client.removeForward(forward)
forwards.removeAll { $0 == forward }
forwardsErrorMessage = nil
isSaving = false
Task {
await loadForwards(for: forward.domain, client: client)
}
} catch {
isSaving = false
mutationErrorMessage = error.userFacingMessage
throw error
}
}
private func sortedRecords(_ records: [DNSRecord]) -> [DNSRecord] {
records.sorted {
($0.name, $0.type, $0.id) < ($1.name, $1.type, $1.id)
}
}
private func sortedForwards(_ forwards: [EmailForward]) -> [EmailForward] {
forwards.sorted {
($0.from, $0.to) < ($1.from, $1.to)
}
}
}
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