import CasePathsCore
import FluentKit
import Foundation
@preconcurrency import URLRouting

extension SiteRoute {
  /// Represents view routes.
  ///
  /// The routes return html.
  public enum View: Equatable, Sendable {
    case home
    case privacyPolicy
    case login(LoginRoute)
    case signup(SignupRoute)
    case project(ProjectRoute)
    case ductulator(DuctulatorRoute)
    case user(UserRoute)
    //FIX: Remove.
    case test

    public static let router = OneOf {
      Route(.case(Self.test)) {
        Path { "test" }
        Method.get
      }
      Route(.case(Self.home)) {
        Method.get
      }
      Route(.case(Self.privacyPolicy)) {
        Path { "privacy-policy" }
        Method.get
      }
      Route(.case(Self.login)) {
        SiteRoute.View.LoginRoute.router
      }
      Route(.case(Self.signup)) {
        SiteRoute.View.SignupRoute.router
      }
      Route(.case(Self.project)) {
        SiteRoute.View.ProjectRoute.router
      }
      Route(.case(Self.ductulator)) {
        SiteRoute.View.DuctulatorRoute.router
      }
      Route(.case(Self.user)) {
        SiteRoute.View.UserRoute.router
      }
    }
  }
}

extension SiteRoute.View {
  public enum ProjectRoute: Equatable, Sendable {
    case create(Project.Create)
    case delete(id: Project.ID)
    case detail(Project.ID, DetailRoute)
    case index
    case page(PageRequest)
    case update(Project.ID, Project.Update)

    public static func page(page: Int, per limit: Int) -> Self {
      .page(.init(page: page, per: limit))
    }

    static let rootPath = "projects"

    public static let router = OneOf {
      Route(.case(Self.create)) {
        Path { rootPath }
        Method.post
        Body {
          FormData {
            Field("name", .string)
            Field("streetAddress", .string)
            Field("city", .string)
            Field("state", .string)
            Field("zipCode", .string)
            Optionally {
              Field("sensibleHeatRatio", default: nil) {
                Double.parser()
              }
            }
          }
          .map(.memberwise(Project.Create.init))
        }
      }
      Route(.case(Self.delete)) {
        Path {
          rootPath
          Project.ID.parser()
        }
        Method.delete
      }
      Route(.case(Self.detail)) {
        Path {
          rootPath
          Project.ID.parser()
        }
        DetailRoute.router
      }
      Route(.case(Self.index)) {
        Path { rootPath }
        Method.get
      }
      Route(.case(Self.page)) {
        Path {
          rootPath
          "page"
        }
        Method.get
        Query {
          Field("page", default: 1) { Int.parser() }
          Field("per", default: 25) { Int.parser() }
        }
        .map(.memberwise(PageRequest.init))
      }
      Route(.case(Self.update)) {
        Path {
          rootPath
          Project.ID.parser()
        }
        Method.patch
        Body {
          FormData {
            Optionally {
              Field("name", .string)
            }
            Optionally {
              Field("streetAddress", .string)
            }
            Optionally {
              Field("city", .string)
            }
            Optionally {
              Field("state", .string)
            }
            Optionally {
              Field("zipCode", .string)
            }
            Optionally {
              Field("sensibleHeatRatio", default: nil) {
                Double.parser()
              }
            }
          }
          .map(.memberwise(Project.Update.init))
        }
      }
    }
  }
}

extension SiteRoute.View.ProjectRoute {

  public enum DetailRoute: Equatable, Sendable {
    case index
    case componentLoss(ComponentLossRoute)
    case ductSizing(DuctSizingRoute)
    case equipment(EquipmentInfoRoute)
    case equivalentLength(EquivalentLengthRoute)
    case frictionRate(FrictionRateRoute)
    case pdf
    case rooms(RoomRoute)

    static let router = OneOf {
      Route(.case(Self.index)) {
        Method.get
      }
      Route(.case(Self.componentLoss)) {
        ComponentLossRoute.router
      }
      Route(.case(Self.ductSizing)) {
        DuctSizingRoute.router
      }
      Route(.case(Self.equipment)) {
        EquipmentInfoRoute.router
      }
      Route(.case(Self.equivalentLength)) {
        EquivalentLengthRoute.router
      }
      Route(.case(Self.frictionRate)) {
        FrictionRateRoute.router
      }
      Route(.case(Self.pdf)) {
        Path { "pdf" }
        Method.get
      }
      Route(.case(Self.rooms)) {
        RoomRoute.router
      }
    }

    public enum Tab: String, CaseIterable, Equatable, Sendable {
      case project
      case equipment
      case rooms
      case equivalentLength
      case frictionRate
      case ductSizing
    }
  }

  public enum RoomRoute: Equatable, Sendable {
    case csv(Room.CSV)
    case delete(id: Room.ID)
    case index
    case submit(Room.Create)
    case update(Room.ID, Room.Update)
    case updateSensibleHeatRatio(SHRUpdate)

    static let rootPath = "rooms"

    public static let router = OneOf {
      Route(.case(Self.csv)) {
        Path {
          rootPath
          "csv"
        }
        Headers {
          Field("Content-Type") { "multipart/form-data" }
        }
        Method.post
        Body().map(.memberwise(Room.CSV.init))
      }
      Route(.case(Self.delete)) {
        Path {
          rootPath
          Room.ID.parser()
        }
        Method.delete
      }
      Route(.case(Self.index)) {
        Path {
          rootPath
        }
        Method.get
      }
      Route(.case(Self.submit)) {
        Path { rootPath }
        Method.post
        Body {
          FormData {
            Field("name", .string)
            Optionally {
              Field("level") {
                Int.parser()
              }
              .map(.memberwise(Room.Level.init(rawValue:)))
            }
            Field("heatingLoad") { Double.parser() }
            Optionally {
              Field("coolingTotal") { Double.parser() }
            }
            Optionally {
              Field("coolingSensible") { Double.parser() }
            }
            Field("registerCount") { Digits() }
            Optionally {
              Field("delegatedTo") { Room.ID.parser() }
            }
          }
          .map(.memberwise(Room.Create.init))
        }
      }
      Route(.case(Self.update)) {
        Path {
          rootPath
          Room.ID.parser()
        }
        Method.patch
        Body {
          FormData {
            Optionally {
              Field("name", .string)
            }
            Optionally {
              Field("level") {
                Int.parser()
              }
              .map(.memberwise(Room.Level.init(rawValue:)))
            }
            Optionally {
              Field("heatingLoad") { Double.parser() }
            }
            Optionally {
              Field("coolingTotal") { Double.parser() }
            }
            Optionally {
              Field("coolingSensible") { Double.parser() }
            }
            Optionally {
              Field("registerCount") { Digits() }
            }
          }
          .map(.memberwise(Room.Update.init))
        }
      }
      Route(.case(Self.updateSensibleHeatRatio)) {
        Path {
          rootPath
          "update-shr"
        }
        Method.patch
        Body {
          FormData {
            Field("projectID") { Project.ID.parser() }
            Optionally {
              Field("sensibleHeatRatio") { Double.parser() }
            }
          }
          .map(.memberwise(SHRUpdate.init))
        }
      }
    }

    public struct SHRUpdate: Codable, Equatable, Sendable {
      public let projectID: Project.ID
      public let sensibleHeatRatio: Double?
    }
  }

  public enum ComponentLossRoute: Equatable, Sendable {
    case index
    case delete(ComponentPressureLoss.ID)
    case submit(ComponentPressureLoss.Create)
    case update(ComponentPressureLoss.ID, ComponentPressureLoss.Update)

    static let rootPath = "component-loss"

    static let router = OneOf {
      Route(.case(Self.index)) {
        Path { rootPath }
        Method.get
      }
      Route(.case(Self.delete)) {
        Path {
          rootPath
          ComponentPressureLoss.ID.parser()
        }
        Method.delete
      }
      Route(.case(Self.submit)) {
        Path { rootPath }
        Method.post
        Body {
          FormData {
            Field("projectID") { Project.ID.parser() }
            Field("name", .string)
            Field("value") { Double.parser() }
          }
          .map(.memberwise(ComponentPressureLoss.Create.init))
        }
      }
      Route(.case(Self.update)) {
        Path {
          rootPath
          ComponentPressureLoss.ID.parser()
        }
        Method.patch
        Body {
          FormData {
            Optionally {
              Field("name", .string)
            }
            Optionally {
              Field("value") { Double.parser() }
            }
          }
          .map(.memberwise(ComponentPressureLoss.Update.init))
        }
      }
    }
  }

  public enum FrictionRateRoute: Equatable, Sendable {
    case index

    static let rootPath = "friction-rate"

    public static let router = OneOf {
      Route(.case(Self.index)) {
        Path { rootPath }
        Method.get
      }
    }
  }

  public enum EquipmentInfoRoute: Equatable, Sendable {
    case index
    case submit(EquipmentInfo.Create)
    case update(EquipmentInfo.ID, EquipmentInfo.Update)

    static let rootPath = "equipment"

    public static let router = OneOf {
      Route(.case(Self.index)) {
        Path { rootPath }
        Method.get
      }
      Route(.case(Self.submit)) {
        Path { rootPath }
        Method.post
        Body {
          FormData {
            Field("projectID") { Project.ID.parser() }
            Field("staticPressure") { Double.parser() }
            Field("heatingCFM") { Int.parser() }
            Field("coolingCFM") { Int.parser() }
          }
          .map(.memberwise(EquipmentInfo.Create.init))
        }
      }
      Route(.case(Self.update)) {
        Path {
          rootPath
          EquipmentInfo.ID.parser()
        }
        Method.patch
        Body {
          FormData {
            Optionally {
              Field("staticPressure", default: nil) { Double.parser() }
            }
            Optionally {
              Field("heatingCFM", default: nil) { Int.parser() }
            }
            Optionally {
              Field("coolingCFM", default: nil) { Int.parser() }
            }
          }
          .map(.memberwise(EquipmentInfo.Update.init))
        }
      }
    }
  }

  public enum EquivalentLengthRoute: Equatable, Sendable {
    case delete(id: EquivalentLength.ID)
    case field(FieldType, style: EquivalentLength.EffectiveLengthType? = nil)
    case index
    case submit(FormStep)
    case update(EquivalentLength.ID, StepThree)

    static let rootPath = "effective-lengths"

    public static let router = OneOf {
      Route(.case(Self.delete(id:))) {
        Path {
          rootPath
          EquivalentLength.ID.parser()
        }
        Method.delete
      }
      Route(.case(Self.index)) {
        Path { rootPath }
        Method.get
      }
      Route(.case(Self.field)) {
        Path {
          rootPath
          "field"
        }
        Method.get
        Query {
          Field("type") { FieldType.parser() }
          Optionally {
            Field("style", default: nil) {
              EquivalentLength.EffectiveLengthType.parser()
            }
          }
        }
      }
      Route(.case(Self.submit)) {
        Path { rootPath }
        Method.post
        FormStep.router
      }
      Route(.case(Self.update)) {
        Path {
          rootPath
          EquivalentLength.ID.parser()
        }
        Method.patch
        Body {
          FormData {
            Optionally {
              Field("id", default: nil) { EquivalentLength.ID.parser() }
            }
            Field("name", .string)
            Field("type") { EquivalentLength.EffectiveLengthType.parser() }
            Many {
              Field("straightLengths") {
                Int.parser()
              }
            }
            Many {
              Field("group[group]") {
                Int.parser()
              }
            }
            Many {
              Field("group[letter]", .string)
            }
            Many {
              Field("group[length]") {
                Int.parser()
              }

            }
            Many {
              Field("group[quantity]") {
                Int.parser()
              }
            }
          }
          .map(.memberwise(StepThree.init))
        }
      }
    }

    public enum FormStep: Equatable, Sendable {
      case one(StepOne)
      case two(StepTwo)
      case three(StepThree)

      static let router = OneOf {
        Route(.case(Self.one)) {
          Path {
            Key.stepOne.rawValue
          }
          Body {
            FormData {
              Optionally {
                Field("id", default: nil) { EquivalentLength.ID.parser() }
              }
              Field("name", .string)
              Field("type") { EquivalentLength.EffectiveLengthType.parser() }
            }
            .map(.memberwise(StepOne.init))
          }
        }
        Route(.case(Self.two)) {
          Path {
            Key.stepTwo.rawValue
          }
          Body {
            FormData {
              Optionally {
                Field("id", default: nil) { EquivalentLength.ID.parser() }
              }
              Field("name", .string)
              Field("type") { EquivalentLength.EffectiveLengthType.parser() }
              Many {
                Field("straightLengths") {
                  Int.parser()
                }
              }
            }
            .map(.memberwise(StepTwo.init))
          }
        }
        Route(.case(Self.three)) {
          Path {
            Key.stepThree.rawValue
          }
          Body {
            FormData {
              Optionally {
                Field("id", default: nil) { EquivalentLength.ID.parser() }
              }
              Field("name", .string)
              Field("type") { EquivalentLength.EffectiveLengthType.parser() }
              Many {
                Field("straightLengths") {
                  Int.parser()
                }
              }
              Many {
                Field("group[group]") {
                  Int.parser()
                }
              }
              Many {
                Field("group[letter]", .string)
              }
              Many {
                Field("group[length]") {
                  Int.parser()
                }

              }
              Many {
                Field("group[quantity]") {
                  Int.parser()
                }
              }
            }
            .map(.memberwise(StepThree.init))
          }
        }
      }

      public enum Key: String, CaseIterable, Codable, Equatable, Sendable {
        case stepOne
        case stepTwo
        case stepThree
      }
    }

    public struct StepOne: Codable, Equatable, Sendable {
      public let id: EquivalentLength.ID?
      public let name: String
      public let type: EquivalentLength.EffectiveLengthType
    }

    public struct StepTwo: Codable, Equatable, Sendable {

      public let id: EquivalentLength.ID?
      public let name: String
      public let type: EquivalentLength.EffectiveLengthType
      public let straightLengths: [Int]

      public init(
        id: EquivalentLength.ID? = nil,
        name: String,
        type: EquivalentLength.EffectiveLengthType,
        straightLengths: [Int]
      ) {
        self.id = id
        self.name = name
        self.type = type
        self.straightLengths = straightLengths
      }
    }

    public struct StepThree: Codable, Equatable, Sendable {
      public let id: EquivalentLength.ID?
      public let name: String
      public let type: EquivalentLength.EffectiveLengthType
      public let straightLengths: [Int]
      public let groupGroups: [Int]
      public let groupLetters: [String]
      public let groupLengths: [Int]
      public let groupQuantities: [Int]
    }

    public enum FieldType: String, CaseIterable, Equatable, Sendable {
      case straightLength
      case group
    }

  }

  public enum DuctSizingRoute: Equatable, Sendable {
    case index
    case deleteRectangularSize(Room.ID, DeleteRectangularDuct)
    case roomRectangularForm(Room.ID, RoomRectangularForm)
    case trunk(TrunkRoute)

    public static let roomPath = "room"
    static let rootPath = "duct-sizing"

    static let router = OneOf {
      Route(.case(Self.index)) {
        Path { rootPath }
        Method.get
      }
      Route(.case(Self.deleteRectangularSize)) {
        Path {
          rootPath
          roomPath
          Room.ID.parser()
        }
        Method.delete
        Query {
          Field("rectangularSize") { Room.RectangularSize.ID.parser() }
          Field("register") { Int.parser() }
        }
        .map(.memberwise(DeleteRectangularDuct.init))
      }
      Route(.case(Self.roomRectangularForm)) {
        Path {
          rootPath
          roomPath
          Room.ID.parser()
        }
        Method.post
        Body {
          FormData {
            Optionally {
              Field("id") { Room.RectangularSize.ID.parser() }
            }
            Field("register") { Int.parser() }
            Field("height") { Int.parser() }
          }
          .map(.memberwise(RoomRectangularForm.init))
        }
      }
      Route(.case(Self.trunk)) {
        Path { rootPath }
        TrunkRoute.router
      }
    }

    public struct DeleteRectangularDuct: Equatable, Sendable {

      public let rectangularSizeID: Room.RectangularSize.ID
      public let register: Int

      public init(rectangularSizeID: Room.RectangularSize.ID, register: Int) {
        self.rectangularSizeID = rectangularSizeID
        self.register = register
      }
    }

    public enum TrunkRoute: Equatable, Sendable {
      case delete(TrunkSize.ID)
      case submit(TrunkSizeForm)
      case update(TrunkSize.ID, TrunkSizeForm)

      public static let rootPath = "trunk"

      static let router = OneOf {
        Route(.case(Self.delete)) {
          Path {
            rootPath
            TrunkSize.ID.parser()
          }
          Method.delete
        }
        Route(.case(Self.submit)) {
          Path {
            rootPath
          }
          Method.post
          Body {
            FormData {
              Field("projectID") { Project.ID.parser() }
              Field("type") { TrunkSize.TrunkType.parser() }
              Optionally {
                Field("height") { Int.parser() }

              }
              Optionally {
                Field("name", .string)
              }
              Many {
                Field("rooms", .string)
              }
            }
            .map(.memberwise(TrunkSizeForm.init))
          }
        }
        Route(.case(Self.update)) {
          Path {
            rootPath
            TrunkSize.ID.parser()
          }
          Method.patch
          Body {
            FormData {
              Field("projectID") { Project.ID.parser() }
              Field("type") { TrunkSize.TrunkType.parser() }
              Optionally {
                Field("height") { Int.parser() }
              }
              Optionally {
                Field("name", .string)
              }
              Many {
                Field("rooms", .string)
              }
            }
            .map(.memberwise(TrunkSizeForm.init))
          }
        }
      }
    }

    public struct RoomRectangularForm: Equatable, Sendable {

      public let id: Room.RectangularSize.ID?
      public let register: Int
      public let height: Int

      public init(
        id: Room.RectangularSize.ID? = nil,
        register: Int,
        height: Int
      ) {
        self.id = id
        self.register = register
        self.height = height
      }
    }

    public struct TrunkSizeForm: Equatable, Sendable {

      public let projectID: Project.ID
      public let type: TrunkSize.TrunkType
      public let height: Int?
      public let name: String?
      public let rooms: [String]

      public init(
        projectID: Project.ID,
        type: TrunkSize.TrunkType,
        height: Int? = nil,
        name: String? = nil,
        rooms: [String]
      ) {
        self.projectID = projectID
        self.type = type
        self.height = height
        self.name = name
        self.rooms = rooms
      }
    }
  }
}

extension SiteRoute.View {

  public enum LoginRoute: Equatable, Sendable {
    case index(next: String? = nil)
    case submit(User.Login)

    static let rootPath = "login"

    public static let router = OneOf {
      Route(.case(Self.index)) {
        Path { rootPath }
        Method.get
        Query {
          Optionally {
            Field("next", .string, default: nil)
            // {
            //   CharacterSet.map(.string)
            // }
          }
        }
      }
      Route(.case(Self.submit)) {
        Path { rootPath }
        Method.post
        Body {
          FormData {
            Field("email", .string)
            Field("password", .string)
            Optionally {
              Field("next", .string, default: nil)
            }
          }
          .map(.memberwise(User.Login.init))
        }
      }
    }
  }
}

extension SiteRoute.View {

  public enum SignupRoute: Equatable, Sendable {
    case index
    case submit(User.Create)
    case submitProfile(User.Profile.Create)

    static let rootPath = "signup"

    public static let router = OneOf {
      Route(.case(Self.index)) {
        Path { rootPath }
        Method.get
      }
      Route(.case(Self.submit)) {
        Path { rootPath }
        Method.post
        Body {
          FormData {
            Field("email", .string)
            Field("password", .string)
            Field("confirmPassword", .string)
          }
          .map(.memberwise(User.Create.init))
        }
      }
      Route(.case(Self.submitProfile)) {
        Path {
          rootPath
          "profile"
        }
        Method.post
        Body {
          FormData {
            Field("userID") { User.ID.parser() }
            Field("firstName", .string)
            Field("lastName", .string)
            Field("companyName", .string)
            Field("streetAddress", .string)
            Field("city", .string)
            Field("state", .string)
            Field("zipCode", .string)
            Optionally {
              Field("theme") { Theme.parser() }
            }
          }
          .map(.memberwise(User.Profile.Create.init))
        }
      }
    }
  }
}

extension SiteRoute.View {
  public enum UserRoute: Equatable, Sendable {
    case profile(Profile)
    case logout

    static let router = OneOf {
      Route(.case(Self.profile)) {
        Profile.router
      }
      Route(.case(Self.logout)) {
        Path { "logout" }
        Method.get
      }
    }
  }
}

extension SiteRoute.View.UserRoute {
  public enum Profile: Equatable, Sendable {
    case index
    case submit(User.Profile.Create)
    case update(User.Profile.ID, User.Profile.Update)

    static let rootPath = "profile"

    static let router = OneOf {
      Route(.case(Self.index)) {
        Path { rootPath }
        Method.get
      }
      Route(.case(Self.submit)) {
        Path { rootPath }
        Method.post
        Body {
          FormData {
            Field("userID") { User.ID.parser() }
            Field("firstName", .string)
            Field("lastName", .string)
            Field("companyName", .string)
            Field("streetAddress", .string)
            Field("city", .string)
            Field("state", .string)
            Field("zipCode", .string)
            Optionally {
              Field("theme") { Theme.parser() }
            }
          }
          .map(.memberwise(User.Profile.Create.init))
        }
      }
      Route(.case(Self.update)) {
        Path {
          rootPath
          User.Profile.ID.parser()
        }
        Method.patch
        Body {
          FormData {
            Optionally {
              Field("firstName", .string)
            }
            Optionally {
              Field("lastName", .string)
            }
            Optionally {
              Field("companyName", .string)
            }
            Optionally {
              Field("streetAddress", .string)
            }
            Optionally {
              Field("city", .string)
            }
            Optionally {
              Field("state", .string)
            }
            Optionally {
              Field("zipCode", .string)
            }
            Optionally {
              Field("theme") { Theme.parser() }
            }
          }
          .map(.memberwise(User.Profile.Update.init))
        }
      }
    }
  }
}

extension SiteRoute.View {
  public enum DuctulatorRoute: Equatable, Sendable {
    case index
    case submit(Form)

    public static let rootPath = "duct-size"

    static let router = OneOf {
      Route(.case(Self.index)) {
        Path { rootPath }
        Method.get
      }
      Route(.case(Self.submit)) {
        Path { rootPath }
        Method.post
        Body {
          FormData {
            Field("cfm") { Int.parser() }
            Field("frictionRate") { Double.parser() }
            Optionally {
              Field("height") { Int.parser() }
            }
          }
          .map(.memberwise(Form.init))
        }
      }
    }

    public struct Form: Equatable, Sendable {

      public let cfm: Int
      public let frictionRate: Double
      public let height: Int?

      public init(cfm: Int, frictionRate: Double, height: Int? = nil) {
        self.cfm = cfm
        self.frictionRate = frictionRate
        self.height = height
      }
    }
  }
}

extension PageRequest: @retroactive Equatable {
  public static func == (lhs: FluentKit.PageRequest, rhs: FluentKit.PageRequest) -> Bool {
    lhs.page == rhs.page && lhs.per == rhs.per
  }
}