import Fluent
import Vapor

// TODO: Add update route.

struct PurchaseOrderApiController: RouteCollection {
  private let purchaseOrders = PurchaseOrderDB()

  func boot(routes: any RoutesBuilder) throws {
    let protected = routes.apiProtected(route: "purchase-orders")
    protected.get(use: index(req:))
    protected.post(use: create(req:))
    protected.group(":id") {
      $0.get(use: get(req:))
      $0.delete(use: delete(req:))
    }
  }

  @Sendable
  func index(req: Request) async throws -> [PurchaseOrder.DTO] {
    try await purchaseOrders.fetchAll(on: req.db)
  }

  @Sendable
  func create(req: Request) async throws -> PurchaseOrder.DTO {
    try PurchaseOrder.Create.validate(content: req)
    let model = try req.content.decode(PurchaseOrder.Create.self)
    return try await purchaseOrders.create(
      model,
      createdById: req.auth.require(User.self).requireID(),
      on: req.db
    )
  }

  @Sendable
  func get(req: Request) async throws -> PurchaseOrder.DTO {
    guard let id = req.parameters.get("id", as: PurchaseOrder.IDValue.self),
          let purchaseOrder = try await purchaseOrders.get(id: id, on: req.db)
    else {
      throw Abort(.notFound)
    }
    return purchaseOrder
  }

  @Sendable
  func delete(req: Request) async throws -> HTTPStatus {
    guard let id = req.parameters.get("id", as: PurchaseOrder.IDValue.self) else {
      throw Abort(.badRequest, reason: "Purchase order id not provided.")
    }
    try await purchaseOrders.delete(id: id, on: req.db)
    return .ok
  }

  // @Sendable
  // func update(req: Request) async throws -> PurchaseOrder.DTO {
  //   guard let id = req.parameters.get("id", as: PurchaseOrder.IDValue.self) else {
  //     throw Abort(.badRequest, reason: "Purchase order id not provided.")
  //   }
  //   try await purchaseOrders.delete(id: id, on: req.db)
  //   return .ok
  // }
}