From 8fb98f4f7678d7e290193e1a66eb16d30bfbee8f Mon Sep 17 00:00:00 2001
From: dscyrescotti <dscyrescotti@gmail.com>
Date: Tue, 7 May 2024 13:20:21 +0700
Subject: [PATCH] feat: add memo grid view

---
 Memola/App/MemolaApp.swift            |  3 +-
 Memola/Canvas/Core/Canvas.swift       | 16 +++---
 Memola/Features/Memo/MemoView.swift   | 42 ++++++++++----
 Memola/Features/Memos/MemosView.swift | 82 +++++++++++++++++++++++----
 4 files changed, 113 insertions(+), 30 deletions(-)

diff --git a/Memola/App/MemolaApp.swift b/Memola/App/MemolaApp.swift
index a5f44a4..119dd03 100644
--- a/Memola/App/MemolaApp.swift
+++ b/Memola/App/MemolaApp.swift
@@ -11,8 +11,7 @@ import SwiftUI
 struct MemolaApp: App {
     var body: some Scene {
         WindowGroup {
-            MemoView()
-                .environmentObject(Canvas())
+            MemosView()
                 .environment(\.managedObjectContext, Persistence.shared.viewContext)
         }
     }
diff --git a/Memola/Canvas/Core/Canvas.swift b/Memola/Canvas/Core/Canvas.swift
index f8d2381..d3c9a46 100644
--- a/Memola/Canvas/Core/Canvas.swift
+++ b/Memola/Canvas/Core/Canvas.swift
@@ -58,16 +58,16 @@ final class Canvas: NSObject, ObservableObject, Identifiable, Codable, GraphicCo
 // MARK: - Actions
 extension Canvas {
     func load() {
-//        guard let graphicLoader else { return }
+        guard let graphicLoader else { return }
         Task(priority: .high) { [unowned self, graphicLoader] in
             await MainActor.run {
                 self.state = .loading
             }
             do {
-//                let graphicContext = try graphicLoader()
+                let graphicContext = try graphicLoader()
                 graphicContext.delegate = self
                 await MainActor.run {
-//                    self.graphicContext = graphicContext
+                    self.graphicContext = graphicContext
                     self.state = .loaded
                 }
             } catch {
@@ -91,11 +91,11 @@ extension Canvas {
     }
 
     func listen(on managedObjectContext: NSManagedObjectContext) {
-        Task(priority: .background) { [unowned self] in
-            for await _ in didUpdate.values {
-                await save(on: managedObjectContext)
-            }
-        }
+//        Task(priority: .utility) { [unowned self] in
+//            for await _ in didUpdate.throttle(for: 500, scheduler: DispatchQueue.global(qos: .utility), latest: false).values {
+//                await save(on: managedObjectContext)
+//            }
+//        }
     }
 }
 
diff --git a/Memola/Features/Memo/MemoView.swift b/Memola/Features/Memo/MemoView.swift
index e3ddcdc..b8fe602 100644
--- a/Memola/Features/Memo/MemoView.swift
+++ b/Memola/Features/Memo/MemoView.swift
@@ -29,7 +29,7 @@ struct MemoView: View {
             }
             .overlay(alignment: .topLeading) {
                 Button {
-                    dismiss()
+                    closeMemo()
                 } label: {
                     Image(systemName: "xmark")
                         .padding(15)
@@ -39,16 +39,15 @@ struct MemoView: View {
                 .hoverEffect(.lift)
                 .padding()
             }
-            .disabled(canvas.state == .loading)
+            .disabled(canvas.state == .loading || canvas.state == .closing)
             .overlay {
-                if canvas.state == .loading {
-                    ProgressView {
-                        Text("Loading memo...")
-                    }
-                    .progressViewStyle(.circular)
-                    .padding(20)
-                    .background(.regularMaterial)
-                    .clipShape(RoundedRectangle(cornerRadius: 20))
+                switch canvas.state {
+                case .loading:
+                    progressView("Loading memo...")
+                case .closing:
+                    progressView("Saving memo...")
+                default:
+                    EmptyView()
                 }
             }
             .environmentObject(tool)
@@ -80,4 +79,27 @@ struct MemoView: View {
         .background(.regularMaterial)
         .clipShape(RoundedRectangle(cornerRadius: 20))
     }
+
+    func progressView(_ title: String) -> some View {
+        ProgressView {
+            Text(title)
+        }
+        .progressViewStyle(.circular)
+        .padding(20)
+        .background(.regularMaterial)
+        .clipShape(RoundedRectangle(cornerRadius: 20))
+    }
+
+    func closeMemo() {
+        Task(priority: .high) {
+            await MainActor.run {
+                canvas.state = .closing
+            }
+            await canvas.save(on: managedObjectContext)
+            await MainActor.run {
+                canvas.state = .closed
+                dismiss()
+            }
+        }
+    }
 }
diff --git a/Memola/Features/Memos/MemosView.swift b/Memola/Features/Memos/MemosView.swift
index 6d5c43f..fbc64f6 100644
--- a/Memola/Features/Memos/MemosView.swift
+++ b/Memola/Features/Memos/MemosView.swift
@@ -8,18 +8,80 @@
 import SwiftUI
 
 struct MemosView: View {
-    @State var isPresented: Bool = false
+    @Environment(\.managedObjectContext) var managedObjectContext
+
+    @FetchRequest(sortDescriptors: []) var memos: FetchedResults<Memo>
+
+    @State var canvas: Canvas?
+
     var body: some View {
-        VStack {
-            Text("Memos View")
-            Button {
-                isPresented.toggle()
-            } label: {
-                Text("Open Memo")
-            }
-            .fullScreenCover(isPresented: $isPresented) {
-                MemoView()
+        NavigationStack {
+            memoGrid
+                .navigationTitle("Memos")
+                .toolbar {
+                    ToolbarItem(placement: .primaryAction) {
+                        Button {
+                            createMemo(title: "Untitled")
+                        } label: {
+                            Image(systemName: "plus")
+                        }
+                        .hoverEffect()
+                    }
+                }
+        }
+        .fullScreenCover(item: $canvas) { canvas in
+            MemoView()
+                .environmentObject(canvas)
+        }
+    }
+
+    var memoGrid: some View {
+        ScrollView {
+            LazyVGrid(columns: .init(repeating: GridItem(.flexible()), count: 3)) {
+                ForEach(memos) { memo in
+                    memoCard(memo)
+                }
             }
+            .padding()
+        }
+    }
+
+    func memoCard(_ memo: Memo) -> some View {
+        VStack(alignment: .leading) {
+            Rectangle()
+                .frame(height: 150)
+            Text(memo.title)
+        }
+        .onTapGesture {
+            openMemo(for: memo)
+        }
+    }
+
+    func createMemo(title: String) {
+        do {
+            let data = try JSONEncoder().encode(Canvas())
+            let memo = Memo(context: managedObjectContext)
+            memo.id = UUID()
+            memo.title = title
+            memo.data = data
+            memo.createdAt = .now
+            memo.updatedAt = .now
+
+            try managedObjectContext.save()
+            openMemo(for: memo)
+        } catch {
+            NSLog("[SketchNote] - \(error.localizedDescription)")
+        }
+    }
+
+    func openMemo(for memo: Memo) {
+        do {
+            let data = memo.data
+            let canvas = try JSONDecoder().decode(Canvas.self, from: data)
+            canvas.memo = memo
+            self.canvas = canvas
+        } catch {
+            NSLog("[SketchNote] - \(error.localizedDescription)")
         }
     }
 }