feat: Implements common database interactions as dependencies.

Sources/App/Controllers/View/PurchaseOrderViewController.swift

@@ -1,11 +1,13 @@
+import Dependencies
 import Fluent
 import Vapor
 
 struct PurchaseOrderViewController: RouteCollection {
+  @Dependency(\.purchaseOrders) var purchaseOrders
+
   private let employeesApi = EmployeeApiController()
   private let branches = VendorBranchDB()
   private let api = ApiController()
-  private let api2 = PurchaseOrderDB()
 
   func boot(routes: any RoutesBuilder) throws {
     let pos = routes.protected.grouped("purchase-orders")
@@ -20,7 +22,9 @@ struct PurchaseOrderViewController: RouteCollection {
   @Sendable
   func index(req: Request) async throws -> View {
     let params = try? req.query.decode(PurchaseOrderIndex.self)
-    let purchaseOrdersPage = try await api2.fetchPage(params?.page ?? 1, limit: params?.limit ?? 50, on: req.db)
+    let purchaseOrdersPage = try await purchaseOrders.fetchPage(
+      .init(page: params?.page ?? 1, per: params?.limit ?? 50)
+    )
     let branches = try await self.branches.getBranches(req: req)
     let employees = try await employeesApi.index(req: req)
     req.logger.debug("Branches: \(branches)")
@@ -38,7 +42,7 @@ struct PurchaseOrderViewController: RouteCollection {
     guard let id = req.parameters.get("id", as: PurchaseOrder.IDValue.self) else {
       throw Abort(.badRequest, reason: "Id not supplied.")
     }
-    let purchaseOrder = try await api2.get(id: id, on: req.db)
+    let purchaseOrder = try await purchaseOrders.get(id)
     return try await req.view.render("purchaseOrders/detail", ["purchaseOrder": purchaseOrder])
   }
 
@@ -47,7 +51,7 @@ struct PurchaseOrderViewController: RouteCollection {
     try PurchaseOrder.FormCreate.validate(content: req)
     let createdById = try req.auth.require(User.self).requireID()
     let create = try req.content.decode(PurchaseOrder.FormCreate.self).toCreate()
-    let purchaseOrder = try await api2.create(create, createdById: createdById, on: req.db)
+    let purchaseOrder = try await purchaseOrders.create(create, createdById)
     return try await req.view.render("purchaseOrders/table-row", purchaseOrder)
   }
 }