FTStore/admin/FTStoreAdmin/App/AdminFeedbackDetailView.swift

//
//  AdminFeedbackDetailView.swift
//  FTStore Admin
//
//  One feedback thread: read it, answer it as the FTStore Team, and move its
//  status. Mirrors /admin/feedback/<id>.
//
//  The reply box and the status picker are one form on purpose. Changing a
//  status without saying why is what makes a public board feel like a void, so
//  sending both together is a single call, and the server folds them into one
//  timeline entry the reporter reads as one thing.
//
//  Everything typed here is published to every FTStore user under the name
//  "FTStore", badged "Team". The operator account behind it is recorded
//  server-side for
//  the audit trail and never leaves FTStore Admin.
//
//  Moderation is ordered by how much it takes back: hiding a report is
//  reversible and is what an operator should reach for, muting an install stops
//  it writing without touching what it wrote, and deleting destroys the
//  conversation including other people's replies. The server keeps the last one
//  behind `withAdmin`, so a non-admin operator gets a 403 banner rather than a
//  button that isn't there.
//

import SwiftUI

struct AdminFeedbackDetailView: View {
	@EnvironmentObject private var session: AdminSession

	let ticketId: Int
	/// Shown while the thread loads, so the screen has a title straight away.
	let title: String
	/// Called once the ticket is gone, so the queue behind this screen drops the
	/// row instead of keeping one that now 404s.
	let onDeleted: () async -> Void

	@Environment(\.dismiss) private var dismiss

	@StateObject private var _thread = AdminLoader<AdminEnvelope<AdminFeedbackThread>>()

	@State private var _reply = ""
	@State private var _status: AdminFeedbackStatus?
	@State private var _busy = false
	@State private var _banner: String?

	@State private var _confirmingMute = false
	@State private var _confirmingTakedown = false
	@State private var _confirmingDelete = false

	private var _data: AdminFeedbackThread? { _thread.value?.data }
	private var _ticket: AdminFeedbackTicket? { _data?.ticket }

	/// The pending choice until it is sent, then whatever the server says.
	private var _selectedStatus: AdminFeedbackStatus {
		_status
			?? _ticket.flatMap { AdminFeedbackStatus(rawValue: $0.status) }
			?? .open
	}

	private var _statusChanged: Bool {
		guard let ticket = _ticket else { return false }
		return _selectedStatus.rawValue != ticket.status
	}

	private var _canSend: Bool {
		!_reply.trimmingCharacters(in: .whitespacesAndNewlines).isEmpty || _statusChanged
	}

	var body: some View {
		List {
			if let banner = _banner {
				Section {
					Text(banner).font(.footnote).foregroundStyle(.secondary)
				}
			}

			if _thread.isLoading && !_thread.hasLoaded {
				AdminLoadingRow()
			} else if let error = _thread.errorMessage, !_thread.hasLoaded {
				AdminErrorRow(message: error) { Task { await _reload() } }
			} else if let ticket = _ticket {
				_reportSection(ticket)
				_threadSection
				_answerSection(ticket)
				_triageSection(ticket)
				_moderationSection(ticket)
			}
		}
		.navigationTitle(_ticket.map { "#\($0.id)" } ?? title)
		.navigationBarTitleDisplayMode(.inline)
		.refreshable { await _reload() }
		.task { await _reload() }
		.alert("Take this report off the board?", isPresented: $_confirmingTakedown) {
			Button("Take it down", role: .destructive) { _setHidden(true) }
			Button("Cancel", role: .cancel) {}
		} message: {
			Text("It disappears for everyone except its author, who sees it marked as removed. You can put it back at any time.")
		}
		.alert("Stop this install from posting?", isPresented: $_confirmingMute) {
			Button("Mute", role: .destructive) { _setBlocked(true) }
			Button("Cancel", role: .cancel) {}
		} message: {
			Text("Everything already posted stays up. The install can still read the board and still be replied to, it just can't write anything new.")
		}
		.alert("Delete this report for good?", isPresented: $_confirmingDelete) {
			Button("Delete", role: .destructive) { _delete() }
			Button("Cancel", role: .cancel) {}
		} message: {
			Text("The whole conversation goes with it, including other people's replies. Taking it off the board is the reversible option.")
		}
	}

	// MARK: The report

	@ViewBuilder
	private func _reportSection(_ ticket: AdminFeedbackTicket) -> some View {
		Section {
			VStack(alignment: .leading, spacing: 8) {
				Text(ticket.title)
					.font(.headline)

				HStack(spacing: 8) {
					Label(ticket.kindLabel, systemImage: ticket.symbol)
					// The ticket's own status, not the picker's pending choice.
					Label(
						ticket.statusLabel,
						systemImage: AdminFeedbackStatus(rawValue: ticket.status)?.symbol
							?? "smallcircle.filled.circle"
					)
					if ticket.isPinned {
						Label("Pinned", systemImage: "pin.fill")
							.foregroundStyle(AdminTheme.brand)
					}
					if ticket.asksForTeam {
						Label("Asked for FTStore", systemImage: "at")
							.foregroundStyle(.orange)
					}
					if ticket.hidden {
						Label("Off the board", systemImage: "eye.slash")
							.foregroundStyle(.red)
					}
				}
				.font(.caption)
				.foregroundStyle(.secondary)

				Text(AdminMentions.attributed(ticket.body, tint: AdminTheme.brand))
					.font(.subheadline)
					.textSelection(.enabled)

				AdminFeedbackShotsView(
					shots: ticket.shots,
					onChanged: { await _reload() },
					banner: $_banner
				)

				if ticket.editedAt != nil {
					NavigationLink {
						AdminRevisionHistoryView(ticketId: ticketId, commentId: nil)
							.environmentObject(session)
					} label: {
						Label("Show what changed", systemImage: "clock.arrow.circlepath")
							.font(.caption)
					}
				}

				_voteTally(ticket.votes)

				HStack(spacing: 8) {
					Button {
						_vote(1, current: ticket.teamVote ?? 0)
					} label: {
						Label("Back it", systemImage: "arrowshape.up.fill")
					}
					.buttonStyle(.borderedProminent)
					.tint((ticket.teamVote ?? 0) > 0 ? AdminTheme.brand : .gray)

					Button {
						_vote(-1, current: ticket.teamVote ?? 0)
					} label: {
						Image(systemName: "arrowshape.down.fill")
					}
					.buttonStyle(.bordered)
					.tint((ticket.teamVote ?? 0) < 0 ? .red : .gray)

					Button {
						_togglePinned(!ticket.isPinned)
					} label: {
						Label(ticket.isPinned ? "Pinned" : "Pin", systemImage: "pin")
					}
					.buttonStyle(.bordered)
					.tint(ticket.isPinned ? AdminTheme.brand : .gray)
				}
				.font(.caption)
				.disabled(_busy)

				Text(verbatim: _byline(ticket))
					.font(.caption2)
					.foregroundStyle(.tertiary)
			}
			.padding(.vertical, 2)
		} header: {
			Text("Report")
		}
	}

	private func _byline(_ ticket: AdminFeedbackTicket) -> String {
		var line = ticket.authorName
		if let created = ticket.createdAt {
			line += " · " + AdminFormat.relative(created)
		}
		if ticket.editedAt != nil {
			line += " · " + .localized(ticket.wasEditedByTeam ? "edited by FTStore" : "edited")
		}
		return line
	}

	// MARK: The thread

	@ViewBuilder
	private var _threadSection: some View {
		if let comments = _data?.comments, !comments.isEmpty {
			Section {
				ForEach(comments) { comment in
					_entry(comment)
				}
			} header: {
				Text("Thread")
			}
		}
	}

	@ViewBuilder
	private func _entry(_ comment: AdminFeedbackComment) -> some View {
		VStack(alignment: .leading, spacing: 5) {
			if comment.isStatusOnly, let to = comment.statusTo {
				// An event, not something someone said, so it reads as one line.
				Label(
					String.localized(
						"%@ marked this as %@",
						comment.authorName,
						AdminFeedbackStatus.label(for: to)
					),
					systemImage: AdminFeedbackStatus(rawValue: to)?.symbol ?? "arrow.triangle.branch"
				)
				.font(.caption)
				.foregroundStyle(.secondary)
			} else {
				HStack(spacing: 6) {
					Text(comment.authorName)
						.font(.subheadline.weight(.medium))
					if comment.isTeam {
						// "Team", not "Admin": the byline beside it is just FTStore
						// now, so this badge is what says the entry came from the
						// people who run the store.
						Text("Team")
							.font(.caption2.weight(.semibold))
							.padding(.horizontal, 6)
							.padding(.vertical, 2)
							.background(AdminTheme.brand.opacity(0.15), in: Capsule())
							.foregroundStyle(AdminTheme.brand)
					}
					Spacer(minLength: 0)
					if comment.isDeleted {
						Image(systemName: "trash").foregroundStyle(.red)
					}
					if comment.hidden {
						Image(systemName: "eye.slash").foregroundStyle(.red)
					}
				}
				.font(.caption)

				if let to = comment.statusTo {
					Text(verbatim: .localized("Marked as %@", AdminFeedbackStatus.label(for: to)))
						.font(.caption2)
						.foregroundStyle(.secondary)
				}

				if let body = comment.body, !body.isEmpty {
					// Struck through rather than dropped: the board no longer shows
					// this to anyone, and the replies underneath it were answering it.
					Text(AdminMentions.attributed(body, tint: AdminTheme.brand))
						.font(.subheadline)
						.strikethrough(comment.isDeleted)
						.textSelection(.enabled)
				}

				AdminFeedbackShotsView(
					shots: comment.shots,
					onChanged: { await _reload() },
					banner: $_banner
				)

				if !comment.isDeleted {
					HStack(spacing: 8) {
						_voteTally(comment.votes)
						Button {
							_vote(1, current: comment.teamVote ?? 0, commentId: comment.id)
						} label: {
							Image(systemName: "arrowshape.up.fill")
						}
						.tint((comment.teamVote ?? 0) > 0 ? AdminTheme.brand : .gray)
						Button {
							_vote(-1, current: comment.teamVote ?? 0, commentId: comment.id)
						} label: {
							Image(systemName: "arrowshape.down.fill")
						}
						.tint((comment.teamVote ?? 0) < 0 ? .red : .gray)
					}
					.buttonStyle(.bordered)
					.controlSize(.mini)
					.disabled(_busy)
				}
			}

			Text(verbatim: _commentByline(comment))
				.font(.caption2)
				.foregroundStyle(.tertiary)

			if comment.isDeleted {
				Text("Deleted by its author. Nobody in the app can see it.")
					.font(.caption2)
					.foregroundStyle(.secondary)
			}
		}
		.padding(.vertical, 2)
		.opacity(comment.hidden || comment.isDeleted ? 0.5 : 1)
		.swipeActions(edge: .trailing) {
			// Hiding something its author already withdrew would change nothing
			// anyone can see, so the action goes away with the reply.
			if !comment.isDeleted {
				Button(comment.hidden ? "Restore" : "Hide") {
					_setCommentHidden(comment, hidden: !comment.hidden)
				}
				.tint(comment.hidden ? .green : .orange)
			}
		}
	}

	private func _commentByline(_ comment: AdminFeedbackComment) -> String {
		var parts: [String] = []
		if let created = comment.createdAt { parts.append(AdminFormat.relative(created)) }
		if comment.editedAt != nil {
			parts.append(.localized(comment.wasEditedByTeam ? "edited by FTStore" : "edited"))
		}
		if let deleted = comment.deletedAt {
			parts.append(.localized("deleted %@", AdminFormat.relative(deleted)))
		}
		if let operatorName = comment.operatorName { parts.append(operatorName) }
		return parts.joined(separator: " · ")
	}

	@ViewBuilder
	private func _voteTally(_ votes: AdminFeedbackVotes) -> some View {
		if !votes.isEmpty {
			// The tally, read-only: the buttons beside it are what casts
			// FTStore's own vote, one for the whole team however many operators
			// there are. The split is shown next to the score because 40 against
			// 38 is a different conversation from two people quietly agreeing,
			// and the score alone spells both as 2.
			HStack(spacing: 8) {
				Text(verbatim: votes.scoreLabel)
					.font(.caption.weight(.semibold).monospacedDigit())
				Label("\(votes.upvotes)", systemImage: "arrowtriangle.up")
				Label("\(votes.downvotes)", systemImage: "arrowtriangle.down")
			}
			.font(.caption2.monospacedDigit())
			.foregroundStyle(.secondary)
			.padding(.horizontal, 8)
			.padding(.vertical, 4)
			.background(Color(uiColor: .tertiarySystemFill), in: Capsule())
		}
	}

	// MARK: Answering

	@ViewBuilder
	private func _answerSection(_ ticket: AdminFeedbackTicket) -> some View {
		Section {
			Picker("Status", selection: Binding(
				get: { _selectedStatus },
				set: { _status = $0 }
			)) {
				ForEach(AdminFeedbackStatus.allCases) { status in
					Label(status.label, systemImage: status.symbol).tag(status)
				}
			}

			TextField(
				_statusChanged ? "Why? (optional)" : "Write a reply...",
				text: $_reply,
				axis: .vertical
			)
			.lineLimit(3...8)

			_mentionSuggestions

			Button {
				_send()
			} label: {
				HStack {
					Label(
						_statusChanged
							? String.localized("Mark as %@", _selectedStatus.label)
							: .localized("Post reply"),
						systemImage: _statusChanged ? _selectedStatus.symbol : "paperplane"
					)
					if _busy {
						Spacer()
						ProgressView()
					}
				}
			}
			.disabled(_busy || !_canSend)
		} header: {
			Text("Answer as FTStore")
		} footer: {
			if _statusChanged {
				Text("The status change and your note go into the thread as one entry, shown to everyone who opens this report.")
			} else if let handle = _data?.author?.handle {
				Text(verbatim: .localized(
					"Everyone who opens this report in FTStore sees what you write, under the name FTStore. Write @%@ to notify the reporter.",
					handle
				))
			} else {
				Text("Everyone who opens this report in FTStore sees what you write, under the name FTStore.")
			}
		}
	}

	/// The handles worth offering for the `@` being typed.
	///
	/// The reporter, whoever else replied, and FTStore. Only what is already on
	/// this screen, which is the rule the app and the dashboard follow: a lookup
	/// across the board would hand anybody a list of the people using FTStore.
	@ViewBuilder
	private var _mentionSuggestions: some View {
		if let draft = AdminMentions.draftHandle(in: _reply) {
			let handles = AdminMentions.suggestions(for: draft, among: _threadHandles)

			if !handles.isEmpty {
				ScrollView(.horizontal, showsIndicators: false) {
					HStack(spacing: 6) {
						ForEach(handles.prefix(6), id: \.self) { handle in
							Button {
								_reply = AdminMentions.complete(_reply, with: handle)
							} label: {
								Text(verbatim: "@\(handle)")
									.font(.caption)
									.padding(.horizontal, 9)
									.padding(.vertical, 4)
									.background(AdminTheme.brand.opacity(0.15), in: Capsule())
									.foregroundStyle(AdminTheme.brand)
							}
							.buttonStyle(.plain)
						}
					}
					.padding(.vertical, 2)
				}
			}
		}
	}

	/// Everyone in this thread, reporter first, plus FTStore itself.
	///
	/// FTStore is one entry rather than one per operator who answered: an `@` at
	/// it reaches whoever is reading, and naming the individual would say which
	/// of them was on the board that day.
	private var _threadHandles: [String] {
		var names: [String] = []
		if let handle = _data?.author?.handle { names.append(handle) }
		names += (_data?.comments ?? []).filter { !$0.isTeam }.map(\.authorName)
		names.append("FTStore")
		return names
	}

	// MARK: Triage

	@ViewBuilder
	private func _triageSection(_ ticket: AdminFeedbackTicket) -> some View {
		Section {
			LabeledContent("Reporter", value: ticket.authorName)
			// A registered name is one somebody holds with a PIN. An
			// unregistered one is the handle every install is given, and the
			// difference is worth having when a thread turns into an argument
			// about who said what.
			if let author = _data?.author {
				// Spelled out rather than written inline: `LabeledContent`'s
				// `value:` is generic over `StringProtocol`, so a bare
				// `.localized(…)` in there has nothing to resolve against.
				let identity: String = author.isRegistered
					? .localized("Registered name")
					: .localized("Anonymous handle")

				LabeledContent("Identity", value: identity)
			}
			LabeledContent("Score", value: ticket.votes.scoreLabel)
			LabeledContent("Upvotes", value: AdminFormat.count(ticket.votes.upvotes))
			LabeledContent("Downvotes", value: AdminFormat.count(ticket.votes.downvotes))
			if let device = ticket.deviceSummary {
				LabeledContent("Sent from", value: device)
			}
			if let install = _data?.author?.installId {
				LabeledContent("Install") {
					Text(install)
						.font(.caption.monospaced())
						.textSelection(.enabled)
						.lineLimit(1)
						.truncationMode(.middle)
				}
			}
		} header: {
			Text("Details")
		} footer: {
			Text("The board never publishes any of this. It is here so a bug can be reproduced without asking which version.")
		}
	}

	// MARK: Moderation

	@ViewBuilder
	private func _moderationSection(_ ticket: AdminFeedbackTicket) -> some View {
		Section {
			Picker("Kind", selection: Binding(
				get: { ticket.kind },
				set: { _setKind($0) }
			)) {
				Text("Feature request").tag("feature")
				Text("Bug report").tag("bug")
			}

			Button {
				if ticket.hidden { _setHidden(false) } else { _confirmingTakedown = true }
			} label: {
				Label(
					ticket.hidden ? "Put back on the board" : "Take off the board",
					systemImage: ticket.hidden ? "eye" : "eye.slash"
				)
			}
			.disabled(_busy)

			if let author = _data?.author {
				// Spelled out rather than inlined: Swift will not infer
				// `ButtonRole?` from a ternary with `nil` on one side.
				let role: ButtonRole? = author.blocked ? nil : .destructive
				Button(role: role) {
					if author.blocked { _setBlocked(false) } else { _confirmingMute = true }
				} label: {
					Label(
						author.blocked ? "Let this install post again" : "Mute this install",
						systemImage: author.blocked ? "checkmark.shield" : "hand.raised"
					)
				}
				.disabled(_busy)
			}

			// Admin-only server-side (`withAdmin`), and the last thing in the
			// section for the same reason it is last on the dashboard: taking a
			// report down is the reversible answer and should be reached first.
			Button(role: .destructive) {
				_confirmingDelete = true
			} label: {
				Label("Delete permanently", systemImage: "trash")
			}
			.disabled(_busy)
		} header: {
			Text("Moderation")
		} footer: {
			if _data?.author?.blocked == true {
				Text("This install is muted. What it already posted is still on the board.")
			} else {
				Text("Taking a report down is reversible. Deleting one destroys other people's replies too, so it is admin-only and there is no undo.")
			}
		}
	}

	// MARK: Actions

	private func _reload() async {
		await _thread.load {
			try await session.get(
				"/api/feedback/\(ticketId)",
				as: AdminEnvelope<AdminFeedbackThread>.self
			)
		}
	}

	/// Send the reply, the status change, or both.
	private func _send() {
		let text = _reply.trimmingCharacters(in: .whitespacesAndNewlines)
		let changingStatus = _statusChanged
		let status = _selectedStatus

		_run {
			if changingStatus {
				return try await session.act(
					.put,
					"/api/feedback/\(ticketId)",
					body: AdminRequest.FeedbackUpdate(
						status: status.rawValue,
						note: text.isEmpty ? nil : text
					)
				)
			}
			return try await session.act(
				.post,
				"/api/feedback/\(ticketId)",
				body: AdminRequest.FeedbackReply(body: text)
			)
		} onSuccess: {
			_reply = ""
			_status = nil
		}
	}

	private func _setHidden(_ hidden: Bool) {
		_run {
			try await session.act(
				.put,
				"/api/feedback/\(ticketId)",
				body: AdminRequest.FeedbackUpdate(hidden: hidden)
			)
		}
	}

	private func _setKind(_ kind: String) {
		_run {
			try await session.act(
				.put,
				"/api/feedback/\(ticketId)",
				body: AdminRequest.FeedbackUpdate(kind: kind)
			)
		}
	}

	private func _setCommentHidden(_ comment: AdminFeedbackComment, hidden: Bool) {
		_run {
			try await session.act(
				.put,
				"/api/feedback/comments/\(comment.id)",
				body: AdminRequest.FeedbackCommentModeration(hidden: hidden, reason: nil, body: nil)
			)
		}
	}

	private func _setBlocked(_ blocked: Bool) {
		guard let installId = _data?.author?.installId else { return }
		_run {
			try await session.act(
				.put,
				"/api/feedback/authors",
				body: AdminRequest.FeedbackAuthorModeration(
					installId: installId,
					blocked: blocked
				)
			)
		}
	}

	/// Delete the ticket and leave the screen.
	///
	/// The one action here that does not go through `_run`: there is no thread
	/// left to reload afterwards, and a 403 from a non-admin account has to stay
	/// on screen as a banner rather than dismiss as if it had worked.
	private func _delete() {
		_busy = true
		Task { @MainActor in
			do {
				_ = try await session.act(.delete, "/api/feedback/\(ticketId)")
				_busy = false
				await onDeleted()
				dismiss()
			} catch {
				_banner = (error as? LocalizedError)?.errorDescription ?? error.localizedDescription
				_busy = false
			}
		}
	}

	/// Hold the report at the top of the board, or let it go.
	private func _togglePinned(_ pinned: Bool) {
		_run {
			try await session.act(
				.put,
				"/api/feedback/\(ticketId)",
				body: AdminRequest.FeedbackUpdate(pinned: pinned)
			)
		}
	}

	/// Put FTStore's weight behind something, or take it back.
	///
	/// Pressing the direction a vote already holds clears it, which is the same
	/// gesture the app's own control uses, so the two behave alike.
	private func _vote(_ value: Int, current: Int, commentId: Int? = nil) {
		let next = current == value ? 0 : value
		_run {
			try await session.act(
				.put,
				"/api/feedback/\(ticketId)/vote",
				body: AdminRequest.FeedbackVote(value: next, commentId: commentId)
			)
		}
	}

	private func _run(
		_ operation: @escaping @MainActor () async throws -> AdminAck,
		onSuccess: (@MainActor () -> Void)? = nil
	) {
		_busy = true
		Task { @MainActor in
			do {
				let ack = try await operation()
				_banner = ack.summary
				onSuccess?()
			} catch {
				_banner = (error as? LocalizedError)?.errorDescription ?? error.localizedDescription
			}
			_busy = false
			await _reload()
		}
	}
}

/// What a report or a reply said before it was edited.
///
/// Pushed rather than inlined: most entries were never edited, and the history
/// is something an operator goes looking for rather than something the thread
/// should carry. The diff arrives already computed and already condensed, so
/// this only colours it.
struct AdminRevisionHistoryView: View {
	@EnvironmentObject private var session: AdminSession

	let ticketId: Int
	/// Nil when the history is the report's own.
	let commentId: Int?

	@StateObject private var _loader = AdminLoader<AdminEnvelope<[AdminFeedbackRevision]>>()

	var body: some View {
		List {
			if _loader.isLoading {
				AdminLoadingRow()
			} else if let error = _loader.errorMessage, !_loader.hasLoaded {
				AdminErrorRow(message: error) { Task { await _load() } }
			} else if (_loader.value?.data ?? []).isEmpty {
				AdminEmptyRow(
					icon: "clock.arrow.circlepath",
					title: "No earlier version",
					detail: "Nothing was recorded before this was last written."
				)
			} else {
				ForEach(_loader.value?.data ?? []) { revision in
					Section {
						if revision.titleChanged, let title = revision.title {
							Text(title)
								.font(.subheadline)
								.strikethrough()
								.foregroundStyle(.red)
						}
						if revision.diff.isEmpty {
							Text("Only the title changed.")
								.font(.caption)
								.foregroundStyle(.secondary)
						} else {
							ForEach(Array(revision.diff.enumerated()), id: \.offset) { _, line in
								Text(_prefix(line) + line.text)
									.font(.caption.monospaced())
									.foregroundStyle(_tint(line))
							}
						}
					} header: {
						Text(_header(revision))
					}
				}
			}
		}
		.navigationTitle("What changed")
		.navigationBarTitleDisplayMode(.inline)
		.task { await _load() }
	}

	private func _prefix(_ line: AdminDiffLine) -> String {
		switch line.kind {
		case "add": return "+ "
		case "remove": return "- "
		default: return "  "
		}
	}

	private func _tint(_ line: AdminDiffLine) -> Color {
		switch line.kind {
		case "add": return .green
		case "remove": return .red
		default: return .secondary
		}
	}

	private func _header(_ revision: AdminFeedbackRevision) -> String {
		var parts: [String] = []
		if let created = revision.createdAt { parts.append(AdminFormat.relative(created)) }
		if revision.byTeam { parts.append(.localized("edited by FTStore")) }
		return parts.joined(separator: " · ")
	}

	private func _load() async {
		let query = commentId.map { "?commentId=\($0)" } ?? ""
		await _loader.load {
			try await session.get(
				"/api/feedback/\(ticketId)/revisions\(query)",
				as: AdminEnvelope<[AdminFeedbackRevision]>.self
			)
		}
	}
}