feat: Initial duct sizing view and calculations, need to add supply and return trunk sizing.

Sources/ViewController/Extensions/DatabaseExtensions.swift

@@ -22,6 +22,30 @@ extension DatabaseClient.Projects {
   }
 }
 
+extension DatabaseClient {
+
+  func designFrictionRate(
+    projectID: Project.ID
+  ) async throws -> (EquipmentInfo, EffectiveLength.MaxContainer, Double)? {
+    guard let equipmentInfo = try await equipment.fetch(projectID) else {
+      return nil
+    }
+
+    let equivalentLengths = try await effectiveLength.fetchMax(projectID)
+    guard let tel = equivalentLengths.total else { return nil }
+
+    let componentLosses = try await componentLoss.fetch(projectID)
+    guard componentLosses.count > 0 else { return nil }
+
+    let availableStaticPressure =
+      equipmentInfo.staticPressure - componentLosses.totalComponentPressureLoss
+
+    let designFrictionRate = (availableStaticPressure * 100) / tel
+
+    return (equipmentInfo, equivalentLengths, designFrictionRate)
+  }
+}
+
 extension DatabaseClient.ComponentLoss {
 
   func createDefaults(projectID: Project.ID) async throws {

Sources/ViewController/Extensions/ManualDClient+extensions.swift

@@ -0,0 +1,36 @@
+import Logging
+import ManualDClient
+import ManualDCore
+
+extension ManualDClient {
+
+  func calculate(
+    rooms: [Room],
+    designFrictionRateResult: (EquipmentInfo, EffectiveLength.MaxContainer, Double)?,
+    projectSHR: Double?,
+    logger: Logger? = nil
+  ) async throws -> [DuctSizing.RoomContainer] {
+    guard let designFrictionRateResult else { return [] }
+    let equipmentInfo = designFrictionRateResult.0
+    let effectiveLengths = designFrictionRateResult.1
+    let designFrictionRate = designFrictionRateResult.2
+
+    guard let maxSupply = effectiveLengths.supply else { return [] }
+    guard let maxReturn = effectiveLengths.return else { return [] }
+
+    let ductRooms = try await self.calculateSizes(
+      rooms: rooms,
+      equipmentInfo: equipmentInfo,
+      maxSupplyLength: maxSupply,
+      maxReturnLength: maxReturn,
+      designFrictionRate: designFrictionRate,
+      projectSHR: projectSHR ?? 1.0,
+      logger: logger
+    )
+
+    logger?.debug("Rooms: \(ductRooms)")
+
+    return ductRooms
+
+  }
+}