import {
  BulkCreateOptions,
  CreateOptions,
  Filterable,
  FindAttributeOptions,
  FindOptions,
  InstanceDestroyOptions,
  InstanceUpdateOptions,
  Model,
  ModelCtor,
  ModelType,
  Transactionable
} from '../model';
import { Association, AssociationScope, ForeignKeyOptions, ManyToManyOptions, MultiAssociationAccessors } from './base';

/**
 * Used for a association table in n:m associations.
 */
export interface ThroughOptions {
  /**
   * The model used to join both sides of the N:M association.
   * Can be a string if you want the model to be generated by sequelize.
   */
  model: ModelType | string;

  /**
   * If true the generated join table will be paranoid
   * @default false
   */
  paranoid?: boolean;

  /**
   * A key/value set that will be used for association create and find defaults on the through model.
   * (Remember to add the attributes to the through model)
   */
  scope?: AssociationScope;

  /**
   * If true a unique key will be generated from the foreign keys used (might want to turn this off and create
   * specific unique keys when using scopes)
   *
   * @default true
   */
  unique?: boolean;
}

/**
 * Attributes for the join table
 */
export interface JoinTableAttributes {
  [attribute: string]: unknown;
}

/**
 * Options provided when associating models with belongsToMany relationship
 */
export interface BelongsToManyOptions extends ManyToManyOptions {
  /**
   * The name of the table that is used to join source and target in n:m associations. Can also be a
   * sequelize model if you want to define the junction table yourself and add extra attributes to it.
   */
  through: ModelType | string | ThroughOptions;

  /**
   * The name of the foreign key in the join table (representing the target model) or an object representing
   * the type definition for the other column (see `Sequelize.define` for syntax). When using an object, you
   * can add a `name` property to set the name of the colum. Defaults to the name of target + primary key of
   * target
   */
  otherKey?: string | ForeignKeyOptions;

  /**
   * The name of the field to use as the key for the association in the source table. Defaults to the primary
   * key of the source table
   */
  sourceKey?: string;

  /**
   * The name of the field to use as the key for the association in the target table. Defaults to the primary
   * key of the target table
   */
  targetKey?: string;

  /**
   * Should the join model have timestamps
   */
  timestamps?: boolean;

  /**
   * The unique key name to override the autogenerated one when primary key is not present on through model
   */
  uniqueKey?: string;
}

export class BelongsToMany<S extends Model = Model, T extends Model = Model> extends Association<S, T> {
  public otherKey: string;
  public sourceKey: string;
  public targetKey: string;
  public accessors: MultiAssociationAccessors;
  constructor(source: ModelCtor<S>, target: ModelCtor<T>, options: BelongsToManyOptions);
}

/**
 * The options for the getAssociations mixin of the belongsToMany association.
 * @see BelongsToManyGetAssociationsMixin
 */
export interface BelongsToManyGetAssociationsMixinOptions extends FindOptions<any> {
  /**
   * A list of the attributes from the join table that you want to select.
   */
  joinTableAttributes?: FindAttributeOptions
  /**
   * Apply a scope on the related model, or remove its default scope by passing false.
   */
  scope?: string | boolean;
}

/**
 * The getAssociations mixin applied to models with belongsToMany.
 * An example of usage is as follows:
 *
 * ```js
 *
 * User.belongsToMany(Role, { through: UserRole });
 *
 * interface UserInstance extends Sequelize.Instance<UserInstance, UserAttributes>, UserAttributes {
 *  getRoles: Sequelize.BelongsToManyGetAssociationsMixin<RoleInstance>;
 *  // setRoles...
 *  // addRoles...
 *  // addRole...
 *  // createRole...
 *  // removeRole...
 *  // removeRoles...
 *  // hasRole...
 *  // hasRoles...
 *  // countRoles...
 * }
 * ```
 *
 * @see https://sequelize.org/master/class/lib/associations/belongs-to-many.js~BelongsToMany.html
 * @see Instance
 */
export type BelongsToManyGetAssociationsMixin<TModel> = (
  options?: BelongsToManyGetAssociationsMixinOptions
) => Promise<TModel[]>;

/**
 * The options for the setAssociations mixin of the belongsToMany association.
 * @see BelongsToManySetAssociationsMixin
 */
export interface BelongsToManySetAssociationsMixinOptions
  extends FindOptions<any>,
    BulkCreateOptions<any>,
    InstanceUpdateOptions<any>,
    InstanceDestroyOptions {
  through?: JoinTableAttributes;
}

/**
 * The setAssociations mixin applied to models with belongsToMany.
 * An example of usage is as follows:
 *
 * ```js
 *
 * User.belongsToMany(Role, { through: UserRole });
 *
 * interface UserInstance extends Sequelize.Instance<UserInstance, UserAttributes>, UserAttributes {
 *  // getRoles...
 *  setRoles: Sequelize.BelongsToManySetAssociationsMixin<RoleInstance, RoleId, UserRoleAttributes>;
 *  // addRoles...
 *  // addRole...
 *  // createRole...
 *  // removeRole...
 *  // removeRoles...
 *  // hasRole...
 *  // hasRoles...
 *  // countRoles...
 * }
 * ```
 *
 * @see https://sequelize.org/master/class/lib/associations/belongs-to-many.js~BelongsToMany.html
 * @see Instance
 */
export type BelongsToManySetAssociationsMixin<TModel, TModelPrimaryKey> = (
  newAssociations?: (TModel | TModelPrimaryKey)[],
  options?: BelongsToManySetAssociationsMixinOptions
) => Promise<void>;

/**
 * The options for the addAssociations mixin of the belongsToMany association.
 * @see BelongsToManyAddAssociationsMixin
 */
export interface BelongsToManyAddAssociationsMixinOptions
  extends FindOptions<any>,
    BulkCreateOptions<any>,
    InstanceUpdateOptions<any>,
    InstanceDestroyOptions {
  through?: JoinTableAttributes;
}

/**
 * The addAssociations mixin applied to models with belongsToMany.
 * An example of usage is as follows:
 *
 * ```js
 *
 * User.belongsToMany(Role, { through: UserRole });
 *
 * interface UserInstance extends Sequelize.Instance<UserInstance, UserAttributes>, UserAttributes {
 *  // getRoles...
 *  // setRoles...
 *  addRoles: Sequelize.BelongsToManyAddAssociationsMixin<RoleInstance, RoleId, UserRoleAttributes>;
 *  // addRole...
 *  // createRole...
 *  // removeRole...
 *  // removeRoles...
 *  // hasRole...
 *  // hasRoles...
 *  // countRoles...
 * }
 * ```
 *
 * @see https://sequelize.org/master/class/lib/associations/belongs-to-many.js~BelongsToMany.html
 * @see Instance
 */
export type BelongsToManyAddAssociationsMixin<TModel, TModelPrimaryKey> = (
  newAssociations?: (TModel | TModelPrimaryKey)[],
  options?: BelongsToManyAddAssociationsMixinOptions
) => Promise<void>;

/**
 * The options for the addAssociation mixin of the belongsToMany association.
 * @see BelongsToManyAddAssociationMixin
 */
export interface BelongsToManyAddAssociationMixinOptions
  extends FindOptions<any>,
    BulkCreateOptions<any>,
    InstanceUpdateOptions<any>,
    InstanceDestroyOptions {
  through?: JoinTableAttributes;
}

/**
 * The addAssociation mixin applied to models with belongsToMany.
 * An example of usage is as follows:
 *
 * ```js
 *
 * User.belongsToMany(Role, { through: UserRole });
 *
 * interface UserInstance extends Sequelize.Instance<UserInstance, UserAttributes>, UserAttributes {
 *  // getRoles...
 *  // setRoles...
 *  // addRoles...
 *  addRole: Sequelize.BelongsToManyAddAssociationMixin<RoleInstance, RoleId, UserRoleAttributes>;
 *  // createRole...
 *  // removeRole...
 *  // removeRoles...
 *  // hasRole...
 *  // hasRoles...
 *  // countRoles...
 * }
 * ```
 *
 * @see https://sequelize.org/master/class/lib/associations/belongs-to-many.js~BelongsToMany.html
 * @see Instance
 */
export type BelongsToManyAddAssociationMixin<TModel, TModelPrimaryKey> = (
  newAssociation?: TModel | TModelPrimaryKey,
  options?: BelongsToManyAddAssociationMixinOptions
) => Promise<void>;

/**
 * The options for the createAssociation mixin of the belongsToMany association.
 * @see BelongsToManyCreateAssociationMixin
 */
export interface BelongsToManyCreateAssociationMixinOptions extends CreateOptions<any> {
  through?: JoinTableAttributes;
}
/**
 * The createAssociation mixin applied to models with belongsToMany.
 * An example of usage is as follows:
 *
 * ```js
 *
 * User.belongsToMany(Role, { through: UserRole });
 *
 * interface UserInstance extends Sequelize.Instance<UserInstance, UserAttributes>, UserAttributes {
 *  // getRoles...
 *  // setRoles...
 *  // addRoles...
 *  // addRole...
 *  createRole: Sequelize.BelongsToManyCreateAssociationMixin<RoleAttributes, UserRoleAttributes>;
 *  // removeRole...
 *  // removeRoles...
 *  // hasRole...
 *  // hasRoles...
 *  // countRoles...
 * }
 * ```
 *
 * @see https://sequelize.org/master/class/lib/associations/belongs-to-many.js~BelongsToMany.html
 * @see Instance
 */
export type BelongsToManyCreateAssociationMixin<TModel extends Model> = (
  values?: TModel['_creationAttributes'],
  options?: BelongsToManyCreateAssociationMixinOptions
) => Promise<TModel>;

/**
 * The options for the removeAssociation mixin of the belongsToMany association.
 * @see BelongsToManyRemoveAssociationMixin
 */
export interface BelongsToManyRemoveAssociationMixinOptions extends InstanceDestroyOptions {}

/**
 * The removeAssociation mixin applied to models with belongsToMany.
 * An example of usage is as follows:
 *
 * ```js
 *
 * User.belongsToMany(Role, { through: UserRole });
 *
 * interface UserInstance extends Sequelize.Instance<UserInstance, UserAttributes>, UserAttributes {
 *  // getRoles...
 *  // setRoles...
 *  // addRoles...
 *  // addRole...
 *  // createRole...
 *  removeRole: Sequelize.BelongsToManyRemoveAssociationMixin<RoleInstance, RoleId>;
 *  // removeRoles...
 *  // hasRole...
 *  // hasRoles...
 *  // countRoles...
 * }
 * ```
 *
 * @see https://sequelize.org/master/class/lib/associations/belongs-to-many.js~BelongsToMany.html
 * @see Instance
 */
export type BelongsToManyRemoveAssociationMixin<TModel, TModelPrimaryKey> = (
  oldAssociated?: TModel | TModelPrimaryKey,
  options?: BelongsToManyRemoveAssociationMixinOptions
) => Promise<void>;

/**
 * The options for the removeAssociations mixin of the belongsToMany association.
 * @see BelongsToManyRemoveAssociationsMixin
 */
export interface BelongsToManyRemoveAssociationsMixinOptions extends InstanceDestroyOptions, InstanceDestroyOptions {}

/**
 * The removeAssociations mixin applied to models with belongsToMany.
 * An example of usage is as follows:
 *
 * ```js
 *
 * User.belongsToMany(Role, { through: UserRole });
 *
 * interface UserInstance extends Sequelize.Instance<UserInstance, UserAttributes>, UserAttributes {
 *  // getRoles...
 *  // setRoles...
 *  // addRoles...
 *  // addRole...
 *  // createRole...
 *  // removeRole...
 *  removeRoles: Sequelize.BelongsToManyRemoveAssociationsMixin<RoleInstance, RoleId>;
 *  // hasRole...
 *  // hasRoles...
 *  // countRoles...
 * }
 * ```
 *
 * @see https://sequelize.org/master/class/lib/associations/belongs-to-many.js~BelongsToMany.html
 * @see Instance
 */
export type BelongsToManyRemoveAssociationsMixin<TModel, TModelPrimaryKey> = (
  oldAssociateds?: (TModel | TModelPrimaryKey)[],
  options?: BelongsToManyRemoveAssociationsMixinOptions
) => Promise<void>;

/**
 * The options for the hasAssociation mixin of the belongsToMany association.
 * @see BelongsToManyHasAssociationMixin
 */
export interface BelongsToManyHasAssociationMixinOptions extends BelongsToManyGetAssociationsMixinOptions {}

/**
 * The hasAssociation mixin applied to models with belongsToMany.
 * An example of usage is as follows:
 *
 * ```js
 *
 * User.belongsToMany(Role, { through: UserRole });
 *
 * interface UserInstance extends Sequelize.Instance<UserInstance, UserAttributes>, UserAttributes {
 *  // getRoles...
 *  // setRoles...
 *  // addRoles...
 *  // addRole...
 *  // createRole...
 *  // removeRole...
 *  // removeRoles...
 *  hasRole: Sequelize.BelongsToManyHasAssociationMixin<RoleInstance, RoleId>;
 *  // hasRoles...
 *  // countRoles...
 * }
 * ```
 *
 * @see https://sequelize.org/master/class/lib/associations/belongs-to-many.js~BelongsToMany.html
 * @see Instance
 */
export type BelongsToManyHasAssociationMixin<TModel, TModelPrimaryKey> = (
  target: TModel | TModelPrimaryKey,
  options?: BelongsToManyHasAssociationMixinOptions
) => Promise<boolean>;

/**
 * The options for the hasAssociations mixin of the belongsToMany association.
 * @see BelongsToManyHasAssociationsMixin
 */
export interface BelongsToManyHasAssociationsMixinOptions extends BelongsToManyGetAssociationsMixinOptions {}

/**
 * The removeAssociations mixin applied to models with belongsToMany.
 * An example of usage is as follows:
 *
 * ```js
 *
 * User.belongsToMany(Role, { through: UserRole });
 *
 * interface UserInstance extends Sequelize.Instance<UserInstance, UserAttributes>, UserAttributes {
 *  // getRoles...
 *  // setRoles...
 *  // addRoles...
 *  // addRole...
 *  // createRole...
 *  // removeRole...
 *  // removeRoles
 *  // hasRole...
 *  hasRoles: Sequelize.BelongsToManyHasAssociationsMixin<RoleInstance, RoleId>;
 *  // countRoles...
 * }
 * ```
 *
 * @see https://sequelize.org/master/class/lib/associations/belongs-to-many.js~BelongsToMany.html
 * @see Instance
 */
export type BelongsToManyHasAssociationsMixin<TModel, TModelPrimaryKey> = (
  targets: (TModel | TModelPrimaryKey)[],
  options?: BelongsToManyHasAssociationsMixinOptions
) => Promise<boolean>;

/**
 * The options for the countAssociations mixin of the belongsToMany association.
 * @see BelongsToManyCountAssociationsMixin
 */
export interface BelongsToManyCountAssociationsMixinOptions extends Transactionable, Filterable<any> {
  /**
   * Apply a scope on the related model, or remove its default scope by passing false.
   */
  scope?: string | boolean;
}

/**
 * The countAssociations mixin applied to models with belongsToMany.
 * An example of usage is as follows:
 *
 * ```js
 *
 * User.belongsToMany(Role, { through: UserRole });
 *
 * interface UserInstance extends Sequelize.Instance<UserInstance, UserAttributes>, UserAttributes {
 *  // getRoles...
 *  // setRoles...
 *  // addRoles...
 *  // addRole...
 *  // createRole...
 *  // removeRole...
 *  // removeRoles...
 *  // hasRole...
 *  // hasRoles...
 *  countRoles: Sequelize.BelongsToManyCountAssociationsMixin;
 * }
 * ```
 *
 * @see https://sequelize.org/master/class/lib/associations/belongs-to-many.js~BelongsToMany.html
 * @see Instance
 */
export type BelongsToManyCountAssociationsMixin = (
  options?: BelongsToManyCountAssociationsMixinOptions
) => Promise<number>;