//
// Copyright 2025 Element Creations Ltd.
// Copyright 2023-2025 New Vector Ltd.
//
// SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-Element-Commercial.
// Please see LICENSE files in the repository root for full details.
//

import SwiftUI

struct LocationRoomTimelineView: View {
    @Environment(\.timelineContext) private var context: TimelineViewModel.Context!
    let timelineItem: LocationRoomTimelineItem
    
    var body: some View {
        TimelineStyler(timelineItem: timelineItem) {
            mainContent
                .accessibilityElement(children: .ignore)
                .accessibilityLabel(L10n.commonSharedLocation)
                .onTapGesture {
                    guard context.viewState.mapTilerSettings.isEnabled else { return }
                    context.send(viewAction: .mediaTapped(itemID: timelineItem.id))
                }
        }
    }
    
    @ViewBuilder
    private var mainContent: some View {
        if let geoURI = timelineItem.content.geoURI {
            MapLibreStaticMapView(geoURI: geoURI,
                                  mapURLBuilder: context.viewState.mapTilerSettings,
                                  mapSize: .init(width: mapAspectRatio * mapMaxHeight, height: mapMaxHeight)) {
                LocationMarkerView(kind: timelineItem.content.kind == .sender ? .staticUser(.init(sender: timelineItem.sender)) : .pin,
                                   mediaProvider: context.mediaProvider)
            }
            .frame(maxHeight: mapMaxHeight)
            .aspectRatio(mapAspectRatio, contentMode: .fit)
            .clipped()
        } else {
            FormattedBodyText(text: timelineItem.body,
                              trailingReservedSize: timelineItem.trailingReservedSize)
        }
    }
    
    // MARK: - Private
    
    private let mapAspectRatio: Double = 3 / 2
    private let mapMaxHeight: Double = 300
}

struct LocationRoomTimelineView_Previews: PreviewProvider, TestablePreview {
    static let viewModel = TimelineViewModel.mock
    
    static var previews: some View {
        PreviewScrollView {
            VStack(spacing: 8) {
                states
            }
        }
        .environmentObject(viewModel.context)
        .environment(\.timelineContext, viewModel.context)
        .previewLayout(.sizeThatFits)
        .previewDisplayName("Bubbles")
    }
    
    @ViewBuilder
    static var states: some View {
        LocationRoomTimelineView(timelineItem: .init(id: .randomEvent,
                                                     timestamp: .mock,
                                                     isOutgoing: false,
                                                     isEditable: false,
                                                     canBeRepliedTo: true,
                                                     sender: .init(id: "Bob"),
                                                     content: .init(body: "Fallback geo uri description")))
        
        LocationRoomTimelineView(timelineItem: .init(id: .randomEvent,
                                                     timestamp: .mock,
                                                     isOutgoing: false,
                                                     isEditable: false,
                                                     canBeRepliedTo: true,
                                                     sender: .init(id: "@bob:matrix.org", displayName: "Bob", avatarURL: .mockMXCUserAvatar),
                                                     content: .init(body: "Fallback geo uri description",
                                                                    geoURI: .init(latitude: 41.902782, longitude: 12.496366))))
        LocationRoomTimelineView(timelineItem: .init(id: .randomEvent,
                                                     timestamp: .mock,
                                                     isOutgoing: false,
                                                     isEditable: false,
                                                     canBeRepliedTo: true,
                                                     sender: .init(id: "Bob"),
                                                     content: .init(body: "Fallback geo uri description",
                                                                    geoURI: .init(latitude: 41.902782, longitude: 12.496366),
                                                                    kind: .pin),
                                                     properties: .init(replyDetails: .loaded(sender: .init(id: "@alice:matrix.org", displayName: "Alice"),
                                                                                             eventID: "123",
                                                                                             eventContent: .message(.location(.init(body: "")))))))
    }
}