1 files changed, 114 insertions, 0 deletions
diff --git a/Sora/Data/Moebooru/MoebooruManager.swift b/Sora/Data/Moebooru/MoebooruManager.swift
new file mode 100644
index 0000000..fd8d337
--- /dev/null
+++ b/Sora/Data/Moebooru/MoebooruManager.swift
@@ -0,0 +1,114 @@
+import SwiftUI
+
+@MainActor
+class MoebooruManager: ObservableObject {
+    @Published var posts: [MoebooruPost] = []
+    @Published var allTags: [MoebooruTag] = []
+    @Published var isLoading: Bool = false
+    @Published var currentPage: Int = 1
+    @Published var searchText = ""
+    @Published var endOfData: Bool = false
+    #if os(macOS)
+        @Published var selectedPost: MoebooruPost?
+    #endif
+    private var currentTask: Task<Void, Never>?
+    var tags: [String] {
+        if searchText.isEmpty {
+            return []
+        }
+
+        return searchText
+            .split(separator: " ")
+            .map { $0.trimmingCharacters(in: .whitespacesAndNewlines) }
+            .filter { !$0.isEmpty }
+    }
+
+    init() {
+        fetchAllTags()
+    }
+
+    func fetchPosts(page: Int = 1, limit: Int = 100, tags: [String] = [], replace: Bool = false) async {
+        guard !isLoading else { return }
+
+        currentTask?.cancel()
+
+        currentTask = Task {
+            isLoading = true
+
+            defer { isLoading = false }
+
+            if replace {
+                self.posts = []
+                self.currentPage = 1
+            }
+
+            guard let url = URL(string: "https://yande.re/post.xml?page=\(page)&limit=\(limit)&tags=\(tags.joined(separator: "+"))") else { return }
+
+            do {
+                let (data, _) = try await URLSession.shared.data(from: url)
+
+                if Task.isCancelled { return }
+
+                DispatchQueue.main.async {
+                    let newPosts = Array(Set(MoebooruPostXMLParser().parse(data: data))).sorted { $0.id > $1.id }
+
+                    if newPosts == [] {
+                        self.endOfData = true
+                    } else {
+                        self.posts += newPosts
+                    }
+                }
+            } catch {
+                if (error as? URLError)?.code != .cancelled {
+                    #if DEBUG
+                        print(error)
+                    #endif
+                }
+            }
+        }
+    }
+
+    func performSearch() {
+        Task {
+            await fetchPosts(
+                page: 1,
+                tags: tags,
+                replace: true
+            )
+        }
+    }
+
+    func loadNextPage() {
+        guard !isLoading else { return }
+
+        Task {
+            await fetchPosts(page: currentPage + 1, tags: tags)
+
+            DispatchQueue.main.async {
+                self.currentPage += 1
+            }
+        }
+    }
+
+    func fetchAllTags(limit: Int = 100_000) {
+        Task {
+            guard let url = URL(string: "https://yande.re/tag.xml?limit=\(limit)") else { return }
+
+            do {
+                let (data, _) = try await URLSession.shared.data(from: url)
+
+                if Task.isCancelled { return }
+
+                DispatchQueue.main.async {
+                    self.allTags = (MoebooruTagXMLParser().parse(data: data)).sorted { $0.count > $1.count }
+                }
+            } catch {
+                if (error as? URLError)?.code != .cancelled {
+                    #if DEBUG
+                        print(error)
+                    #endif
+                }
+            }
+        }
+    }
+}