Is there any way to map user info with their tweets without too many fetching?

steve kurogi 0
Viewed 32

I am now trying to create a simple Twitter client using SwiftUI, and currently at the point where I try to fetch my timeline.

Reading the official Twitter API v2 document, there is a way to fetch timeline, but it only offers tweet ID, text, created_at, and author Id.

so I tried to fetch author info using the author Id in loop, which causes too many fetching data and many of them are redundant because a single user tweet many times.

This way makes my account easily reach the api limit, but I am struggling to find better ways.

I am not an enginner and write codes just for fun, so I am not really familiar with techniques enginners should know... I would appreciate if you give me even a hint.

Here is my code below.

 func getStream(client: TwitterAPIClient, id: String) async throws {
        let response = await client.v2.timeline.getUserReverseChronological(.init(
            id: id,
            expansions: TwitterTweetExpansionsV2.all, maxResults: 20,
            mediaFields: TwitterMediaFieldsV2.all,
            tweetFields: TwitterTweetFieldsV2.all.subtracting([.promotedMetrics, .nonPublicMetrics, .organicMetrics]),
            userFields: TwitterUserFieldsV2.all)
        )
            .responseDecodable(type: TwitterDataResponseV2<
                               [TwitterTimelineV2],
                               TwitterTimelineV2.Include,
                               TwitterTimelineV2.Meta>.self)

        if let error = response.error {
            print(error)
            throw error
        } else {
            print(response.success!)
        }
        
        print(response)
        
        let timeline = try response.map { $0.data }.result.get()
        
        for tweet in timeline {
            let response = try await getUserInfo(client: client, id: tweet.authorId).result.get()
            print(response)
        }
    }

Note: TwitterAPIClinet is a client of a third party library.

twitter swift
1 Answers

Instead of fetching user data for each individual tweet, you could first loop the timeline array and store each user once in a dictionary. Then, you can request the user info based on that dictionary.

let timeline = try response.map { $0.data }.result.get()
var usersDictionary = [String : Bool]()

for tweet in timeline {
    usersDictionary[tweet.authorId] = true
}

for authorId in usersDictionary.keys {
    let response = try await getUserInfo(client: client, id: authorId).result.get()
    print(response)
}
Sotiris Kaniras0
Related