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chore: SwiftUI query suggestions example (#294)
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Examples/QuerySuggestions/QuerySuggestionsDemoView.swift
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,159 @@ | ||
| // | ||
| // QuerySuggestionsDemoView.swift | ||
| // QuerySuggestions | ||
| // | ||
| // Created by Vladislav Fitc on 02/06/2023. | ||
| // | ||
|
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| import Foundation | ||
| import SwiftUI | ||
| import InstantSearchCore | ||
| import InstantSearchSwiftUI | ||
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| struct Item: Codable { | ||
| let name: String | ||
| let image: URL | ||
| } | ||
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| struct ItemHitRow: View { | ||
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| let itemHit: Hit<Item> | ||
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| init(_ itemHit: Hit<Item>) { | ||
| self.itemHit = itemHit | ||
| } | ||
|
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| var body: some View { | ||
| HStack(spacing: 14) { | ||
| AsyncImage(url: itemHit.object.image, content: { image in | ||
| image | ||
| .resizable() | ||
| .aspectRatio(contentMode: .fit) | ||
| }, placeholder: { | ||
| ProgressView() | ||
| }) | ||
| .frame(width: 40, height: 40) | ||
| if let highlightedName = itemHit.hightlightedString(forKey: "name") { | ||
| Text(highlightedString: highlightedName, | ||
| highlighted: { Text($0).bold() }) | ||
| } else { | ||
| Text(itemHit.object.name) | ||
| } | ||
| Spacer() | ||
| } | ||
| } | ||
|
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| } | ||
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| final class SearchViewModel: ObservableObject { | ||
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| @Published var searchQuery: String { | ||
| didSet { | ||
| notifyQueryChanged() | ||
| } | ||
| } | ||
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| @Published var suggestions: [QuerySuggestion] | ||
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| var hits: PaginatedDataViewModel<AlgoliaHitsPage<Hit<Item>>> | ||
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| private var itemsSearcher: HitsSearcher | ||
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| private var suggestionsSearcher: HitsSearcher | ||
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| private var didSubmitSuggestion: Bool | ||
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| init() { | ||
| let appID: ApplicationID = "latency" | ||
| let apiKey: APIKey = "af044fb0788d6bb15f807e4420592bc5" | ||
| let itemsSearcher = HitsSearcher(appID: appID, | ||
| apiKey: apiKey, | ||
| indexName: "instant_search") | ||
| self.itemsSearcher = itemsSearcher | ||
| self.suggestionsSearcher = HitsSearcher(appID: appID, | ||
| apiKey: apiKey, | ||
| indexName: "query_suggestions") | ||
| self.hits = itemsSearcher.paginatedData(of: Hit<Item>.self) | ||
| searchQuery = "" | ||
| suggestions = [] | ||
| didSubmitSuggestion = false | ||
| suggestionsSearcher.onResults.subscribe(with: self) { _, response in | ||
| do { | ||
| self.suggestions = try response.extractHits() | ||
| } catch _ { | ||
| self.suggestions = [] | ||
| } | ||
| }.onQueue(.main) | ||
| suggestionsSearcher.search() | ||
| } | ||
|
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| func completeSuggestion(_ suggestion: String) { | ||
| searchQuery = suggestion | ||
| } | ||
|
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| func submitSuggestion(_ suggestion: String) { | ||
| didSubmitSuggestion = true | ||
| searchQuery = suggestion | ||
| } | ||
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| func submitSearch() { | ||
| suggestions = [] | ||
| itemsSearcher.request.query.query = searchQuery | ||
| itemsSearcher.search() | ||
| } | ||
|
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| private func notifyQueryChanged() { | ||
| if didSubmitSuggestion { | ||
| didSubmitSuggestion = false | ||
| submitSearch() | ||
| } else { | ||
| suggestionsSearcher.request.query.query = searchQuery | ||
| suggestionsSearcher.search() | ||
| itemsSearcher.request.query.query = searchQuery | ||
| itemsSearcher.search() | ||
| } | ||
| } | ||
|
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| deinit { | ||
| suggestionsSearcher.onResults.cancelSubscription(for: self) | ||
| } | ||
|
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| } | ||
|
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| public struct SearchView: View { | ||
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| @StateObject var viewModel = SearchViewModel() | ||
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| public var body: some View { | ||
| InfiniteList(viewModel.hits, itemView: { hit in | ||
| ItemHitRow(hit) | ||
| .padding() | ||
| Divider() | ||
| }, noResults: { | ||
| Text("No results found") | ||
| }) | ||
| .navigationTitle("Query suggestions") | ||
| .searchable(text: $viewModel.searchQuery, | ||
| prompt: "Laptop, smartphone, tv", | ||
| suggestions: { | ||
| ForEach(viewModel.suggestions, id: \.query) { suggestion in | ||
| SuggestionRow(suggestion: suggestion, | ||
| onSelection: viewModel.submitSuggestion, | ||
| onTypeAhead: viewModel.completeSuggestion) | ||
| } | ||
| }) | ||
| .onSubmit(of: .search, viewModel.submitSearch) | ||
| } | ||
|
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| } | ||
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| @available(iOS 15.0, *) | ||
| class SearchPreview: PreviewProvider { | ||
|
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| static var previews: some View { | ||
| NavigationView { | ||
| SearchView() | ||
| } | ||
| } | ||
|
|
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| } |
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8 changes: 4 additions & 4 deletions
8
...teScrolling/InfiniteScrollViewModel.swift → ...iteScrolling/PaginatedDataViewModel.swift
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