//
//  HistoryView.swift
//  App
//
//  Created by James Magahern on 1/20/23.
//

import SwiftUI
import UniformTypeIdentifiers

struct HistoryView: View {
    @StateObject public var viewModel: BrowserHistory.ViewModel
    @State public var selectedItems = Set<HistoryItem.ID>()
    
    private let dateFormatter = DateFormatter() .. {
        $0.locale = Locale.current
        $0.dateStyle = .medium
        $0.timeStyle = .short
    }
    
    @Environment(\.dismiss) private var dismissAction
    @Environment(\.horizontalSizeClass) private var horizontalSizeClass
        
    var body: some View {
        Table(viewModel.historyItems, selection: $selectedItems) {
            TableColumn("Title") { item in
                VStack(alignment: .leading) {
                    Text(item.title.count > 0 ? item.title : item.url.absoluteString)
                        .lineLimit(1)
                    
                    if horizontalSizeClass == .compact {
                        Text(item.url.shortString()).font(.caption).lineLimit(1)
                        Text(dateFormatter.string(from: item.lastVisited))
                            .font(.caption)
                            .foregroundColor(.secondary)
                    }
                }
            }
            TableColumn("URL", value: \.url.absoluteString)
            TableColumn("Last Visited") {  item in
                Text(dateFormatter.string(from: item.lastVisited))
            }
        }
        .contextMenu(forSelectionType: HistoryItem.ID.self, menu: { items in
            let historyItems = items.compactMap { viewModel.item(forIdentifier: $0) }
            Button("Copy") {
                UIPasteboard.general.setItems(historyItems.map { [
                    UTType.url.identifier           : $0.url,
                    UTType.utf8PlainText.identifier : $0.url.absoluteString,
                ] })
            }
            
            Button("Delete") {
                viewModel.deleteItems(items)
            }
        }, primaryAction: { items in
            items.compactMap({ viewModel.item(forIdentifier: $0) }).forEach { item in
                UIApplication.shared.open(item.url)
                dismissAction()
            }
        })
        .searchable(text: $viewModel.searchQuery)
    }
}

struct HistoryViewPreviewProvider: PreviewProvider {
    static var previews: some View {
        HistoryView(viewModel: BrowserHistory.shared.viewModel())
            .previewLayout(.fixed(width: 480.0, height: 800.0))
    }
}

extension URL {
    public func shortString() -> String {
        return String(absoluteString.trimmingPrefix(try! Regex("(.+)://")))
    }
}