Impressia/Vernissage/Views/HomeFeedView.swift
Marcin Czachursk 50c26e9e4d A lot of fixes.
2023-01-26 15:10:47 +01:00

105 lines
4.0 KiB
Swift

//
// https://mczachurski.dev
// Copyright © 2022 Marcin Czachurski and the repository contributors.
// Licensed under the MIT License.
//
import SwiftUI
struct HomeFeedView: View {
@Environment(\.managedObjectContext) private var viewContext
@EnvironmentObject var applicationState: ApplicationState
@EnvironmentObject var routerPath: RouterPath
@State private var firstLoadFinished = false
@State private var allItemsBottomLoaded = false
private static let initialColumns = 1
@State private var gridColumns = Array(repeating: GridItem(.flexible()), count: initialColumns)
@FetchRequest var dbStatuses: FetchedResults<StatusData>
init(accountId: String) {
_dbStatuses = FetchRequest<StatusData>(
sortDescriptors: [SortDescriptor(\.id, order: .reverse)],
predicate: NSPredicate(format: "pixelfedAccount.id = %@", accountId))
}
var body: some View {
ScrollView {
LazyVGrid(columns: gridColumns) {
ForEach(dbStatuses, id: \.self) { item in
NavigationLink(value: RouteurDestinations.status(
id: item.rebloggedStatusId ?? item.id,
blurhash: item.attachments().first?.blurhash,
metaImageWidth: item.attachments().first?.metaImageWidth,
metaImageHeight: item.attachments().first?.metaImageHeight)
) {
ImageRow(statusData: item)
}
.buttonStyle(EmptyButtonStyle())
}
if allItemsBottomLoaded == false && firstLoadFinished == true {
LoadingIndicator()
.task {
do {
if let accountData = self.applicationState.accountData {
let newStatusesCount = try await HomeTimelineService.shared.onBottomOfList(for: accountData)
if newStatusesCount == 0 {
allItemsBottomLoaded = true
}
}
} catch {
ErrorService.shared.handle(error, message: "Error during download statuses from server.", showToastr: !Task.isCancelled)
}
}
}
}
}
.overlay(alignment: .center) {
if firstLoadFinished == false {
LoadingIndicator()
} else {
if self.dbStatuses.isEmpty {
VStack {
Image(systemName: "photo.on.rectangle.angled")
.font(.largeTitle)
.padding(.bottom, 4)
Text("Unfortunately, there are no photos here.")
.font(.title3)
}.foregroundColor(.lightGrayColor)
}
}
}
.refreshable {
do {
if let accountData = self.applicationState.accountData {
_ = try await HomeTimelineService.shared.onTopOfList(for: accountData)
}
} catch {
print("Error", error)
}
}
.task {
do {
defer {
Task { @MainActor in
self.firstLoadFinished = true
}
}
if self.dbStatuses.isEmpty == false {
return
}
if let accountData = self.applicationState.accountData {
_ = try await HomeTimelineService.shared.onTopOfList(for: accountData)
}
} catch {
ErrorService.shared.handle(error, message: "Error during download statuses from server.", showToastr: !Task.isCancelled)
}
}
}
}