// Code generated by sidekick. DO NOT EDIT.
//
// Copyright 2026 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

#if InstanceGroupManagers || RegionInstanceGroupManagers
  import Foundation
  import GoogleCloudWkt

  public struct DistributionPolicy: Codable, Equatable, GoogleCloudWkt._AnyPackable,
    Sendable
  {
    /// The distribution shape to which the group converges either proactively or
    /// on resize events (depending on the value set inupdatePolicy.instanceRedistributionType).
    public var targetShape: DistributionPolicy.TargetShape? = nil

    /// Zones where the regional managed instance group will create and manage
    /// its instances.
    /// By default, a regional MIG doesn't automatically select an AI zone to create
    /// instances, even if an AI zone is available in the specified region. To
    /// create instances in an AI zone in the selected region, you must explicitly
    /// specify it in the distribution policy together with the other preferred
    /// zones.
    public var zones: [DistributionPolicyZoneConfiguration] = []

    /// Initialize a new instance of `DistributionPolicy`.
    public init() {}

    /// Use `config` to return a new instance of this object, with some fields updated.
    ///
    /// Commonly used to initialize the value, for example:
    ///
    /// ```
    /// let value = DistributionPolicy().with { $0.targetShape = ... }
    /// ```
    public func with(_ config: (inout Self) throws -> Swift.Void) rethrows -> Self {
      var copy = self
      try config(&copy)
      return copy
    }

    /// The enumerated type for the [targetShape][google.cloud.compute.v1.DistributionPolicy.targetShape] field.
    ///
    /// [google.cloud.compute.v1.DistributionPolicy.targetShape]: <doc:DistributionPolicy/TargetShape>
    public enum TargetShape: Codable, Equatable, Sendable {
      /// The group picks zones for creating VM instances to fulfill the requested
      /// number of VMs within present resource constraints and to maximize
      /// utilization of unused zonal reservations. Recommended for batch workloads
      /// that do not require high availability.
      case any
      /// The group creates all VM instances within a single zone. The zone is
      /// selected based on the present resource constraints and to maximize
      /// utilization of unused zonal reservations.
      /// Recommended for batch workloads with heavy interprocess communication.
      case anySingleZone
      /// The group prioritizes acquisition of resources, scheduling VMs in zones
      /// where resources are available while distributing VMs as evenly as
      /// possible across selected zones to minimize the impact of zonal failure.
      /// Recommended for highly available serving workloads.
      case balanced
      /// The group schedules VM instance creation and deletion to achieve and
      /// maintain an even number of managed instances across the selected zones.
      /// The distribution is even when the number of managed instances does not
      /// differ by more than 1 between any two zones. Recommended for highly
      /// available serving workloads.
      case even
      /// Encodes an unknown integer value.
      ///
      /// The most common cause for an unknown values is for the service to send
      /// a value unknown to the library. We recommend you update your library to
      /// the latest version.
      case unknownIntValue(Int)
      /// Encodes an unknown string value.
      ///
      /// The most common cause for an unknown values is for the service to send
      /// a value unknown to the library. We recommend you update your library to
      /// the latest version.
      case unknownStringValue(String)

      public init() {
        self = .any
      }

      /// Returns the integer value associated with the enumeration.
      ///
      /// If the enumeration was initialized with an unknown string value, this returns `nil`.
      public var intValue: Int? {
        switch self {
        case .any: return 0
        case .anySingleZone: return 1
        case .balanced: return 2
        case .even: return 3
        case .unknownIntValue(let v): return v
        case .unknownStringValue: return nil
        }
      }

      /// Returns the string value (or name) associated with the enumeration.
      ///
      /// If the enumeration was initialized with an unknown integer value, this returns `nil`.
      public var stringValue: Swift.String? {
        switch self {
        case .any: return "ANY"
        case .anySingleZone: return "ANY_SINGLE_ZONE"
        case .balanced: return "BALANCED"
        case .even: return "EVEN"
        case .unknownIntValue: return nil
        case .unknownStringValue(let v): return v
        }
      }

      /// Initialize from a string value.
      ///
      /// If the value is unknown, this initializes to [`unknownStringValue`](doc:TargetShape/unknownStringValue(_:)).
      public init(stringValue: Swift.String) {
        switch stringValue {
        case "ANY": self = .any
        case "ANY_SINGLE_ZONE": self = .anySingleZone
        case "BALANCED": self = .balanced
        case "EVEN": self = .even
        default: self = .unknownStringValue(stringValue)
        }
      }

      /// Initialize from an integer value.
      ///
      /// If the value is unknown, this initializes to [`unknownIntValue`](doc:TargetShape/unknownIntValue(_:)).
      public init(intValue: Int) {
        switch intValue {
        case 0: self = .any
        case 1: self = .anySingleZone
        case 2: self = .balanced
        case 3: self = .even
        default: self = .unknownIntValue(intValue)
        }
      }

      public init(from decoder: Decoder) throws {
        let container = try decoder.singleValueContainer()
        if let v = try? container.decode(Int.self) {
          self.init(intValue: v)
          return
        }
        if let s = try? container.decode(String.self) {
          if let v = Int(s) {
            self.init(intValue: v)
          } else {
            self.init(stringValue: s)
          }
          return
        }
        throw DecodingError.dataCorruptedError(
          in: container, debugDescription: "Expected enum value, must be integer or string.")
      }

      public func encode(to encoder: Encoder) throws {
        var container = encoder.singleValueContainer()
        switch self {
        case .any: return try container.encode(0)
        case .anySingleZone: return try container.encode(1)
        case .balanced: return try container.encode(2)
        case .even: return try container.encode(3)
        case .unknownIntValue(let v): return try container.encode(v)
        case .unknownStringValue(let v): return try container.encode(v)
        }
      }
    }

    public static var _anyTypeUrl: Swift.String {
      return "type.googleapis.com/google.cloud.compute.v1.DistributionPolicy"
    }
    public init(fromAny any: GoogleCloudWkt.`Any`) throws {
      self = try GoogleCloudWkt._slowAnyDeserialize(Self.self, from: any)
    }
    public func _pack() throws -> GoogleCloudWkt.Struct {
      return try GoogleCloudWkt._slowAnySerialize(message: self)
    }
  }
#endif
