1 files changed, 231 insertions, 0 deletions
diff --git a/Hutch/Networking/PasteService.swift b/Hutch/Networking/PasteService.swift
new file mode 100644
index 0000000..b9aa530
--- /dev/null
+++ b/Hutch/Networking/PasteService.swift
@@ -0,0 +1,231 @@
+import Foundation
+
+struct PasteListPage: Decodable, Sendable {
+    let results: [Paste]
+    let cursor: String?
+}
+
+final class PasteService: Sendable {
+    private let client: SRHTClient
+
+    init(client: SRHTClient) {
+        self.client = client
+    }
+
+    private static let listQuery = """
+    query pastes($cursor: Cursor) {
+        pastes(cursor: $cursor) {
+            results {
+                id
+                created
+                visibility
+                files {
+                    filename
+                    hash
+                }
+                user {
+                    canonicalName
+                }
+            }
+            cursor
+        }
+    }
+    """
+
+    private static let detailQuery = """
+    query paste($id: String!) {
+        paste(id: $id) {
+            id
+            created
+            visibility
+            files {
+                filename
+                hash
+                contents
+            }
+            user {
+                canonicalName
+            }
+        }
+    }
+    """
+
+    private static let createMutation = """
+    mutation createPaste($files: [Upload!]!, $visibility: Visibility!) {
+        create(files: $files, visibility: $visibility) {
+            id
+            created
+            visibility
+            files {
+                filename
+                hash
+                contents
+            }
+            user {
+                canonicalName
+            }
+        }
+    }
+    """
+
+    private static let updateMutation = """
+    mutation updatePaste($id: String!, $visibility: Visibility!) {
+        update(id: $id, visibility: $visibility) {
+            id
+            created
+            visibility
+            files {
+                filename
+                hash
+                contents
+            }
+            user {
+                canonicalName
+            }
+        }
+    }
+    """
+
+    private static let deleteMutation = """
+    mutation deletePaste($id: String!) {
+        delete(id: $id) {
+            id
+            created
+            visibility
+            files {
+                filename
+                hash
+            }
+            user {
+                canonicalName
+            }
+        }
+    }
+    """
+
+    private static let cacheKey = "paste.pastes"
+
+    func listPastes(cursor: String?, useCache: Bool) async throws -> PasteListPage {
+        let variables = cursor.map { ["cursor": $0 as any Sendable] }
+        let result: PasteListResponse
+        if useCache, cursor == nil {
+            result = try await client.executeAndCache(
+                service: .paste,
+                query: Self.listQuery,
+                variables: variables,
+                responseType: PasteListResponse.self,
+                cacheKey: Self.cacheKey
+            )
+        } else {
+            result = try await client.execute(
+                service: .paste,
+                query: Self.listQuery,
+                variables: variables,
+                responseType: PasteListResponse.self
+            )
+        }
+        return result.pastes ?? PasteListPage(results: [], cursor: nil)
+    }
+
+    func loadCachedPastes() -> PasteListPage? {
+        guard let data = client.responseCache.get(forKey: Self.cacheKey) else {
+            return nil
+        }
+
+        let decoder = JSONDecoder()
+        decoder.dateDecodingStrategy = .srhtFlexible
+        guard let response = try? decoder.decode(GraphQLResponse<PasteListResponse>.self, from: data) else {
+            return nil
+        }
+        return response.data?.pastes
+    }
+
+    func loadPaste(id: String) async throws -> Paste? {
+        let result = try await client.execute(
+            service: .paste,
+            query: Self.detailQuery,
+            variables: ["id": id],
+            responseType: PasteDetailResponse.self
+        )
+        return result.paste
+    }
+
+    func createPaste(files: [PasteUploadDraft], visibility: Visibility) async throws -> Paste {
+        let uploadFiles = normalizedUploadFiles(from: files)
+        let variables: [String: any Sendable] = [
+            "files": [String?](repeating: nil, count: uploadFiles.count),
+            "visibility": visibility.rawValue
+        ]
+
+        let result = try await client.executeMultipartFiles(
+            service: .paste,
+            query: Self.createMutation,
+            variables: variables,
+            files: uploadFiles.enumerated().map { index, file in
+                MultipartUploadFile(
+                    variablePath: "files.\(index)",
+                    fileData: file.data,
+                    fileName: file.fileName,
+                    mimeType: "text/plain"
+                )
+            },
+            responseType: CreatePasteResponse.self
+        )
+        return result.create
+    }
+
+    func updateVisibility(id: String, visibility: Visibility) async throws -> Paste? {
+        let result = try await client.execute(
+            service: .paste,
+            query: Self.updateMutation,
+            variables: ["id": id, "visibility": visibility.rawValue],
+            responseType: UpdatePasteResponse.self
+        )
+        return result.update
+    }
+
+    func deletePaste(id: String) async throws -> Paste? {
+        let result = try await client.execute(
+            service: .paste,
+            query: Self.deleteMutation,
+            variables: ["id": id],
+            responseType: DeletePasteResponse.self
+        )
+        return result.delete
+    }
+
+    func loadContents(from url: URL) async throws -> String {
+        try await client.fetchText(url: url)
+    }
+
+    private func normalizedUploadFiles(from files: [PasteUploadDraft]) -> [(fileName: String, data: Data)] {
+        files.compactMap { draft in
+            let text = draft.contents
+            guard let data = text.data(using: .utf8) else {
+                return nil
+            }
+
+            return (draft.filename, data)
+        }
+    }
+}
+
+private struct PasteListResponse: Decodable, Sendable {
+    let pastes: PasteListPage?
+}
+
+private struct PasteDetailResponse: Decodable, Sendable {
+    let paste: Paste?
+}
+
+private struct CreatePasteResponse: Decodable, Sendable {
+    let create: Paste
+}
+
+private struct UpdatePasteResponse: Decodable, Sendable {
+    let update: Paste?
+}
+
+private struct DeletePasteResponse: Decodable, Sendable {
+    let delete: Paste?
+}