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|
import Foundation
// MARK: - Response types (file-private to avoid @MainActor Decodable issues)
private struct TrackerTicketsResponse: Decodable, Sendable {
let user: UserTrackerWrapper
}
private struct UserTrackerWrapper: Decodable, Sendable {
let tracker: TrackerTicketsWrapper
}
private struct TrackerTicketsWrapper: Decodable, Sendable {
let tickets: TicketsPage
}
private struct TicketsPage: Decodable, Sendable {
let results: [TicketSummary]
let cursor: String?
}
// MARK: - Filter
enum TicketFilter: String, CaseIterable, Sendable {
case open = "Open"
case resolved = "Resolved"
case all = "All"
}
// MARK: - View Model
@Observable
@MainActor
final class TicketListViewModel {
let ownerUsername: String
let trackerName: String
let trackerId: Int
private(set) var tickets: [TicketSummary] = []
private(set) var isLoading = false
private(set) var isLoadingMore = false
private(set) var isCreatingTicket = false
var error: String?
var filter: TicketFilter = .open
private var cursor: String?
private var hasMore = true
private let client: SRHTClient
init(ownerUsername: String, trackerName: String, trackerId: Int, client: SRHTClient) {
self.ownerUsername = ownerUsername
self.trackerName = trackerName
self.trackerId = trackerId
self.client = client
}
// MARK: - Query
private static let query = """
query tickets($owner: String!, $tracker: String!, $cursor: Cursor) {
user(username: $owner) {
tracker(name: $tracker) {
tickets(cursor: $cursor) {
results {
id
title: subject
status
resolution
created
submitter { canonicalName }
labels { id name backgroundColor foregroundColor }
assignees { canonicalName }
}
cursor
}
}
}
}
"""
private static let submitTicketMutation = """
mutation submitTicket($trackerId: Int!, $input: SubmitTicketInput!) {
submitTicket(trackerId: $trackerId, input: $input) {
id
title: subject
status
resolution
created
submitter { canonicalName }
labels { id name backgroundColor foregroundColor }
assignees { canonicalName }
}
}
"""
// MARK: - Computed
/// Tickets filtered by the selected status filter.
var filteredTickets: [TicketSummary] {
switch filter {
case .open:
tickets.filter { $0.status.isOpen }
case .resolved:
tickets.filter { !$0.status.isOpen }
case .all:
tickets
}
}
// MARK: - Public API
func loadTickets() async {
isLoading = true
error = nil
cursor = nil
hasMore = true
do {
let page = try await fetchPage(cursor: nil)
tickets = page.results
cursor = page.cursor
hasMore = page.cursor != nil
} catch {
self.error = error.localizedDescription
}
isLoading = false
}
func loadMoreIfNeeded(currentItem: TicketSummary) async {
guard let last = tickets.last,
last.id == currentItem.id,
hasMore,
!isLoadingMore else {
return
}
isLoadingMore = true
do {
let page = try await fetchPage(cursor: cursor)
tickets.append(contentsOf: page.results)
cursor = page.cursor
hasMore = page.cursor != nil
} catch {
self.error = error.localizedDescription
}
isLoadingMore = false
}
func createTicket(subject: String, body: String) async -> TicketSummary? {
guard !isCreatingTicket else { return nil }
let trimmedSubject = subject.trimmingCharacters(in: .whitespacesAndNewlines)
guard !trimmedSubject.isEmpty else {
error = "Enter a ticket title."
return nil
}
isCreatingTicket = true
error = nil
defer { isCreatingTicket = false }
var input: [String: any Sendable] = [
"subject": trimmedSubject
]
let trimmedBody = body.trimmingCharacters(in: .whitespacesAndNewlines)
if !trimmedBody.isEmpty {
input["body"] = trimmedBody
}
let variables: [String: any Sendable] = [
"trackerId": trackerId,
"input": input
]
do {
let result = try await client.execute(
service: .todo,
query: Self.submitTicketMutation,
variables: variables,
responseType: SubmitTicketResponse.self
)
let ticket = result.submitTicket
tickets.insert(ticket, at: 0)
return ticket
} catch {
self.error = "Couldn’t create the ticket. \(error.localizedDescription)"
return nil
}
}
// MARK: - Private
private func fetchPage(cursor: String?) async throws -> TicketsPage {
var variables: [String: any Sendable] = [
"owner": ownerUsername,
"tracker": trackerName
]
if let cursor {
variables["cursor"] = cursor
}
let result = try await client.execute(
service: .todo,
query: Self.query,
variables: variables,
responseType: TrackerTicketsResponse.self
)
return result.user.tracker.tickets
}
private struct SubmitTicketResponse: Decodable, Sendable {
let submitTicket: TicketSummary
}
}
|
