feat: Implements common database interactions as dependencies.

Sources/App/Controllers/Api/VendorApiController.swift

@@ -1,8 +1,10 @@
+import Dependencies
 import Fluent
 import Vapor
 
 struct VendorApiController: RouteCollection {
-  private let vendors = VendorDB()
+
+  @Dependency(\.vendors) var vendors
 
   func boot(routes: any RoutesBuilder) throws {
     let protected = routes.apiProtected(route: "vendors")
@@ -17,14 +19,14 @@ struct VendorApiController: RouteCollection {
   @Sendable
   func index(req: Request) async throws -> [Vendor.DTO] {
     let params = try req.query.decode(VendorsIndexQuery.self)
-    return try await vendors.fetchAll(withBranches: params.branches, on: req.db)
+    return try await vendors.fetchAll(params.fetchRequest)
   }
 
   @Sendable
   func create(req: Request) async throws -> Vendor.DTO {
     try Vendor.Create.validate(content: req)
     let model = try req.content.decode(Vendor.Create.self)
-    return try await vendors.create(model, on: req.db)
+    return try await vendors.create(model)
   }
 
   @Sendable
@@ -34,7 +36,7 @@ struct VendorApiController: RouteCollection {
     }
     try Vendor.Update.validate(content: req)
     let updates = try req.content.decode(Vendor.Update.self)
-    return try await vendors.update(id: id, with: updates, on: req.db)
+    return try await vendors.update(id, updates)
   }
 
   @Sendable
@@ -42,11 +44,16 @@ struct VendorApiController: RouteCollection {
     guard let id = req.parameters.get("id", as: Vendor.IDValue.self) else {
       throw Abort(.badRequest, reason: "Vendor id not provided.")
     }
-    try await vendors.delete(id: id, on: req.db)
+    try await vendors.delete(id)
     return .ok
   }
 }
 
 struct VendorsIndexQuery: Content {
   let branches: Bool?
+
+  var fetchRequest: VendorDB.FetchRequest {
+    if branches == true { return .withBranches }
+    return .default
+  }
 }