import Dependencies
import Fluent
import Vapor

struct VendorBranchApiController: RouteCollection {

  @Dependency(\.vendorBranches) var vendorBranches

  func boot(routes: any RoutesBuilder) throws {
    let prefix = routes.apiProtected(route: "vendors")
    let root = prefix.grouped("branches")
    root.get(use: index(req:))
    root.group(":id") {
      $0.put(use: update(req:))
      $0.delete(use: delete(req:))
    }

    prefix.group(":vendorID", "branches") {
      $0.get(use: indexForVendor(req:))
      $0.post(use: create(req:))
    }
  }

  @Sendable
  func index(req: Request) async throws -> [VendorBranch.DTO] {
    try await vendorBranches.fetchAll()
  }

  @Sendable
  func indexForVendor(req: Request) async throws -> [VendorBranch.DTO] {
    guard let id = req.parameters.get("vendorID", as: Vendor.IDValue.self) else {
      throw Abort(.badRequest, reason: "Vendor id not provided.")
    }
    return try await vendorBranches.fetchForVendor(id)
  }

  @Sendable
  func create(req: Request) async throws -> VendorBranch.DTO {
    guard let id = req.parameters.get("vendorID", as: Vendor.IDValue.self) else {
      throw Abort(.badRequest, reason: "Vendor id not provided.")
    }
    try VendorBranch.Create.validate(content: req)
    let model = try req.content.decode(VendorBranch.Create.self)
    return try await vendorBranches.create(model, id)
  }

  @Sendable
  func update(req: Request) async throws -> VendorBranch.DTO {
    guard let id = req.parameters.get("id", as: VendorBranch.IDValue.self) else {
      throw Abort(.badRequest, reason: "Vendor branch id not provided.")
    }
    try VendorBranch.Update.validate(content: req)
    let updates = try req.content.decode(VendorBranch.Update.self)
    return try await vendorBranches.update(id, updates)
  }

  @Sendable
  func delete(req: Request) async throws -> HTTPStatus {
    guard let id = req.parameters.get("id", as: VendorBranch.IDValue.self) else {
      throw Abort(.badRequest, reason: "Vendor branch id not provided.")
    }
    try await vendorBranches.delete(id)
    return .ok
  }

}