Add some basic feedback storage (#4)

Sources/FeedbackKit/Feedback.swift

@@ -1,4 +1,7 @@
-struct Feedback {
+import Foundation
+
+struct Feedback: Codable, Identifiable {
+    let id: UUID
     let type: FeedbackType
     let title: String
     let description: String

Sources/FeedbackKit/FeedbackStore.swift

@@ -1,3 +1,41 @@
-class FeedbackStore {
-
+import AppState
+import Cache
+import Foundation
+
+extension Application {
+    fileprivate var storedFeedback: FileState<[UUID: Feedback]> {
+        fileState(initial: [:], filename: "storedFeedback")
+    }
+}
+
+class FeedbackStore: ObservableObject {
+    enum StoreError: Error {
+        case missingValue
+    }
+
+    @FileState(\.storedFeedback) private var storedFeedback: [UUID: Feedback]
+
+    func `set`(feedback: Feedback) {
+        storedFeedback[feedback.id] = feedback
+    }
+
+    func `get`(id: UUID) -> Feedback? {
+        storedFeedback[id]
+    }
+
+    func remove(id: UUID) {
+        storedFeedback[id] = nil
+    }
+
+    func update(id: UUID, _ block: (Feedback) -> Feedback) throws {
+        guard let storedValue = get(id: id) else {
+            throw StoreError.missingValue
+        }
+
+        set(feedback: block(storedValue))
+    }
+
+    func all() -> [Feedback] {
+        Array(storedFeedback.values)
+    }
 }

Sources/FeedbackKit/FeedbackType.swift

@@ -1,4 +1,4 @@
-enum FeedbackType: String {
+enum FeedbackType: String, Codable {
     case comment
     case bug
     case feature

Sources/FeedbackKit/FeedbackViewModel.swift

@@ -1,5 +1,31 @@
+import Combine
 import SwiftUI
 
 class FeedbackViewModel: ObservableObject {
+    private var bag: Set<AnyCancellable>
 
+    private let store: FeedbackStore
+
+    var feedback: [Feedback]
+
+    init() {
+        bag = Set()
+        store = FeedbackStore()
+        feedback = store.all()
+
+        consume(object: store)
+    }
+
+    private func consume<Object: ObservableObject>(
+        object: Object
+    ) where ObjectWillChangePublisher == ObservableObjectPublisher {
+        bag.insert(
+            object.objectWillChange.sink(
+                receiveCompletion: { _ in },
+                receiveValue: { [weak self] _ in
+                    self?.objectWillChange.send()
+                }
+            )
+        )
+    }
 }

Tests/FeedbackKitTests/FeedbackKitTests.swift

@@ -3,10 +3,8 @@ import XCTest
 
 final class FeedbackKitTests: XCTestCase {
     func testExample() throws {
-        // XCTest Documentation
-        // https://developer.apple.com/documentation/xctest
+        let store = FeedbackStore()
 
-        // Defining Test Cases and Test Methods
-        // https://developer.apple.com/documentation/xctest/defining_test_cases_and_test_methods
+
     }
 }