68 lines
1.9 KiB
Swift
68 lines
1.9 KiB
Swift
import Foundation
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import Models
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import SwiftGraphQL
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extension DataService {
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struct LinkedItemIDFetchResult {
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let itemIDs: [String]
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let cursor: String?
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}
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func fetchLinkedItemIDs(limit: Int, cursor: String?) async throws -> LinkedItemIDFetchResult {
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enum QueryResult {
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case success(result: LinkedItemIDFetchResult)
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case error(error: String)
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}
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let articleIDSelection = Selection.SearchItemEdge {
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try $0.node(selection: Selection.SearchItem { try $0.id() })
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}
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let selection = Selection<QueryResult, Unions.SearchResult> {
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try $0.on(
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searchSuccess: .init {
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QueryResult.success(
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result: LinkedItemIDFetchResult(
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itemIDs: try $0.edges(selection: articleIDSelection.list),
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cursor: try $0.pageInfo(selection: Selection.PageInfo {
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try $0.endCursor()
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})
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)
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)
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},
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searchError: .init {
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QueryResult.error(error: try $0.errorCodes().description)
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}
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)
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}
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let query = Selection.Query {
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try $0.search(
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after: OptionalArgument(cursor),
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first: OptionalArgument(limit),
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query: OptionalArgument(nil),
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selection: selection
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)
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}
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let path = appEnvironment.graphqlPath
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let headers = networker.defaultHeaders
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return try await withCheckedThrowingContinuation { continuation in
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send(query, to: path, headers: headers) { queryResult in
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guard let payload = try? queryResult.get() else {
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continuation.resume(throwing: BasicError.message(messageText: "network error"))
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return
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}
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switch payload.data {
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case let .success(result: result):
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continuation.resume(returning: result)
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case .error:
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continuation.resume(throwing: BasicError.message(messageText: "LinkedItem fetch error"))
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}
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}
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}
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}
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}
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