feature: add Suggestions API

Mastodon/Scene/Search/SearchViewController.swift

@@ -16,13 +16,17 @@ final class SearchViewController: UIViewController, NeedsDependency {
     var disposeBag = Set<AnyCancellable>()
     private(set) lazy var viewModel = SearchViewModel(context: context)
     
+    let searchBar: UISearchBar = {
+        let searchBar = UISearchBar()
+        return searchBar
+    }()
 }
 
 extension SearchViewController {
     
     override func viewDidLoad() {
         super.viewDidLoad()
-        
+
     }
     
 }

MastodonSDK/Sources/MastodonSDK/API/Mastodon+API+Search.swift

@@ -32,7 +32,7 @@ extension Mastodon.API.Search {
     public static func search(
         session: URLSession,
         domain: String,
-        query: Query,
+        query: Mastodon.API.Search.Query,
         authorization: Mastodon.API.OAuth.Authorization
     ) -> AnyPublisher<Mastodon.Response.Content<Mastodon.Entity.SearchResult>, Error> {
         let request = Mastodon.API.get(

MastodonSDK/Sources/MastodonSDK/API/Mastodon+API+Suggestions.swift

@@ -1,8 +1,66 @@
 //
-//  File.swift
+//  Mastodon+API+Suggestions.swift
 //  
 //
 //  Created by sxiaojian on 2021/3/31.
 //
 
+import Combine
 import Foundation
+
+/// Follow suggestions
+///
+/// Server-generated suggestions on who to follow, based on previous positive interactions.
+///
+/// Version history:
+/// 2.4.3 - added
+/// # Reference
+///   [Document](https://docs.joinmastodon.org/methods/accounts/suggestions/)
+/// - Parameters:
+///   - session: `URLSession`
+///   - domain: Mastodon instance domain. e.g. "example.com"
+///   - query: query
+///   - authorization: User token.
+/// - Returns: `AnyPublisher` contains `Accounts` nested in the response
+
+extension Mastodon.API.Suggestions {
+    static func suggestionsURL(domain: String) -> URL {
+        Mastodon.API.endpointURL(domain: domain).appendingPathComponent("api/v1/suggestions")
+    }
+
+    public static func get(
+        session: URLSession,
+        domain: String,
+        query: Mastodon.API.Suggestions.Query,
+        authorization: Mastodon.API.OAuth.Authorization
+    ) -> AnyPublisher<Mastodon.Response.Content<[Mastodon.Entity.Account]>, Error> {
+        let request = Mastodon.API.get(
+            url: suggestionsURL(domain: domain),
+            query: query,
+            authorization: authorization
+        )
+        return session.dataTaskPublisher(for: request)
+            .tryMap { data, response in
+                let value = try Mastodon.API.decode(type: [Mastodon.Entity.Account].self, from: data, response: response)
+                return Mastodon.Response.Content(value: value, response: response)
+            }
+            .eraseToAnyPublisher()
+    }
+}
+
+extension Mastodon.API.Suggestions {
+    public struct Query: Codable, GetQuery {
+        public init(limit: Int?) {
+            self.limit = limit
+        }
+
+        public let limit: Int? // Maximum number of results to return. Defaults to 40.
+
+        var queryItems: [URLQueryItem]? {
+            var items: [URLQueryItem] = []
+            limit.flatMap { items.append(URLQueryItem(name: "limit", value: String($0))) }
+            guard !items.isEmpty else { return nil }
+            return items
+        }
+    }
+}

MastodonSDK/Sources/MastodonSDK/API/Mastodon+API+Trends.swift

@@ -25,13 +25,13 @@ import Foundation
 
 extension Mastodon.API.Trends {
     static func trendsURL(domain: String) -> URL {
-        Mastodon.API.endpointURL(domain: domain).appendingPathComponent("/api/v1/trends")
+        Mastodon.API.endpointURL(domain: domain).appendingPathComponent("api/v1/trends")
     }
 
     public static func get(
         session: URLSession,
         domain: String,
-        query: Query
+        query: Mastodon.API.Trends.Query
     ) -> AnyPublisher<Mastodon.Response.Content<[Mastodon.Entity.Tag]>, Error> {
         let request = Mastodon.API.get(
             url: trendsURL(domain: domain),