Repos_Async

repos_async.swift

import SwiftUI
import Foundation

struct Repositories: Decodable {
  let repos: [Repository]

  enum CodingKeys : String, CodingKey {
    case repos = "items"
  }
}

struct Repository: Decodable {
  let name: String
  let htmlURL: String

  enum CodingKeys : String, CodingKey {
    case name
    case htmlURL = "html_url"
  }
}

// MARK: Our async function to get repos
func fetchRepositories() async throws -> [Repository] {
  let url = URL(string: "https://api.github.com/search/repositories?q=language:swift&sort=stars&order=desc")!
  let (data, _) = try await URLSession.shared.data(from: url)
  return try JSONDecoder().decode(Repositories.self, from: data).repos
}

// MARK: A task to run our async function
Task {
  print("Step 1: Start Task")
  do {
    print("Step 2: Call fetchRepositories")
    let repos = try await fetchRepositories()
    print("Step 3: Print out key data")
    for repo in repos {
      print("  - \(repo.name): \(repo.htmlURL)")
    }
    print("Step 4: Finish printing")
  } catch {
    print("Hit an error in Step 2: ")
    print(error)
  }
  print("Step 5: Finish task")
}
print("Step 6: Outside of the task")