[WIP] Stories

submodules/Postbox/Sources/StoryTable.swift

@@ -0,0 +1,40 @@
+import Foundation
+
+final class StoryTable: Table {
+    enum Event {
+        case updated(id: StoryId)
+    }
+    
+    static func tableSpec(_ id: Int32) -> ValueBoxTable {
+        return ValueBoxTable(id: id, keyType: .binary, compactValuesOnCreation: false)
+    }
+    
+    private let sharedKey = ValueBoxKey(length: 8 + 4)
+    
+    private func key(_ key: StoryId) -> ValueBoxKey {
+        self.sharedKey.setInt64(0, value: key.peerId.toInt64())
+        self.sharedKey.setInt32(8, value: key.id)
+        return self.sharedKey
+    }
+    
+    public func get(id: StoryId) -> CodableEntry? {
+        if let value = self.valueBox.get(self.table, key: self.key(id)) {
+            return CodableEntry(data: value.makeData())
+        } else {
+            return nil
+        }
+    }
+    
+    public func set(id: StoryId, value: CodableEntry, events: inout [Event]) {
+        if self.get(id: id) != value {
+            self.valueBox.set(self.table, key: self.key(id), value: MemoryBuffer(data: value.data))
+            events.append(.updated(id: id))
+        }
+    }
+    
+    override func clearMemoryCache() {
+    }
+    
+    override func beforeCommit() {
+    }
+}