import "reflect-metadata";
import { Model } from "./Model";
import { Blueprint } from "./Blueprint";
import type { TRelationOptionsDecorator } from "../types/decorator";
import type { TPattern, TValidateSchemaDecorator } from "../types";
type RelationOptions = TRelationOptionsDecorator;
export declare const REFLECT_META: {
    RELATIONS: {
        hasOne: string;
        hasMany: string;
        belongsTo: string;
        belongsToMany: string;
    };
    SCHEMA: string;
    VALIDATE_SCHEMA: string;
    TABLE: string;
    UUID: {
        enabled: string;
        column: string;
    };
    OBSERVER: string;
    TIMESTAMP: {
        enabled: string;
        columns: string;
    };
    SOFT_DELETE: {
        enabled: string;
        columns: string;
    };
    PATTERN: string;
    HOOKS: string;
    TRANSFORM: string;
    BEFORE: {
        INSERT: string;
        UPDATE: string;
        REMOVE: string;
    };
    AFTER: {
        INSERT: string;
        UPDATE: string;
        REMOVE: string;
    };
};
/**
 * Decorator to mark a class with a database table name.
 *
 * Attaches the given table name to the class using Reflect metadata.
 * This can be retrieved later to map the class to the corresponding database table.
 *
 * @param {string} name - The name of the database table.
 * @returns {ClassDecorator} A class decorator that sets the table name metadata.
 *
 * @example
 * ```ts
 * @Table('users')
 * class User extends Model {}
 * ```
 */
export declare const Table: (name: string) => ClassDecorator;
/**
 * Decorator to automatically generate a singular table name from a class name.
 *
 * Converts the class name from PascalCase to snake_case, then converts it to singular form.
 * The resulting table name is stored as metadata on the class.
 *
 * @returns {ClassDecorator} A class decorator that sets the singular table name metadata.
 *
 * @example
 * ```ts
 * @TableSingular()
 * class Users extends Model {}
 * ```
 */
export declare const TableSingular: () => ClassDecorator;
/**
 * Decorator to automatically generate a plural table name from a class name.
 *
 * Converts the class name from PascalCase to snake_case, then converts it to plural form.
 * The resulting table name is stored as metadata on the class.
 *
 * @returns {ClassDecorator} A class decorator that sets the plural table name metadata.
 *
 * @example
 * ```ts
 * @TablePlural()
 * class User extends Model {}
 *
 * ```
 */
export declare const TablePlural: () => ClassDecorator;
/**
 * Decorator to enable automatic UUID generation for a model.
 *
 * Stores metadata indicating UUID usage and optional column name.
 *
 * @param {string} [column] - Optional column name to store the UUID.
 * @returns {ClassDecorator} A class decorator that enables UUID metadata.
 *
 * @example
 * ```ts
 * @UUID('id')
 * class User extends Model {}
 * ```
 */
export declare const UUID: (column?: string) => ClassDecorator;
/**
 * Decorator to enable automatic timestamps on a model.
 *
 * Stores metadata indicating that `createdAt` and `updatedAt` columns should be handled.
 *
 * @param {{ createdAt: string; updatedAt: string }} [columns] - Optional custom column names for timestamps.
 * @returns {ClassDecorator} A class decorator that enables timestamp metadata.
 *
 * @example
 * ```ts
 * @Timestamp({ createdAt: 'created_at', updatedAt: 'updated_at' })
 * class User extends Model {}
 * ```
 */
export declare const Timestamp: (columns?: {
    createdAt: string;
    updatedAt: string;
}) => ClassDecorator;
/**
 * Decorator to enable soft deletion on a model.
 *
 * Stores metadata indicating soft delete usage and optional column name.
 *
 * @param {string} [column] - Optional column name to track soft deletion.
 * @returns {ClassDecorator} A class decorator that enables soft delete metadata.
 *
 * @example
 * ```ts
 * @SoftDelete('deleted_at')
 * class User extends Model {}
 * ```
 */
export declare const SoftDelete: (column?: string) => ClassDecorator;
/**
 * Decorator to set the naming pattern for a model.
 *
 * Can be `camelCase` or `snake_case`.
 *
 * @param {"camelCase" | "snake_case"} pattern - The naming convention to use.
 * @returns {ClassDecorator} A class decorator that sets the naming pattern metadata.
 *
 * @example
 * ```ts
 * @Pattern('snake_case')
 * class User extends Model {}
 * ```
 */
export declare const Pattern: (pattern: TPattern) => ClassDecorator;
/**
 * Decorator to set the model naming pattern to camelCase.
 *
 * @returns {ClassDecorator} A class decorator that sets camelCase naming metadata.
 *
 * @example
 * ```ts
 * @CamelCase()
 * class User extends Model {}
 * ```
 */
export declare const CamelCase: () => ClassDecorator;
/**
 * Decorator to set the model naming pattern to snake_case.
 *
 * @returns {ClassDecorator} A class decorator that sets snake_case naming metadata.
 *
 * @example
 * ```ts
 * @SnakeCase()
 * class User extends Model {}
 * ```
 */
export declare const SnakeCase: () => ClassDecorator;
/**
 * Decorator to define a database column for a model property.
 *
 * Accepts a `Blueprint` function that defines the column type, constraints, and other attributes.
 * The resulting column schema is stored as metadata on the target class.
 *
 * @param {() => Blueprint} blueprint - A function returning a `Blueprint` instance describing the column.
 * @returns {Function} A property decorator that registers the column schema.
 *
 * @throws {Error} If the property name cannot be determined.
 *
 * @example
 * ```ts
 * class User extends Model {
 *
 *   @Column(() => Blueprint.int().notNull().primary().autoIncrement())
 *   public id!: number;
 *
 *   @Column(() => Blueprint.varchar(50).null())
 *   public uuid!: string;
 * }
 *
 * ```
 */
export declare const Column: (blueprint: () => Blueprint) => Function;
/**
 * A decorator factory that registers custom `to` and `from` transform functions
 * for a property. Useful for serialization/deserialization logic (e.g. ORM, DTO).
 *
 * @param {Object} options - Transform options.
 * @param {(value: unknown) => any | Promise<any>} options.to - Function executed when transforming *to* app -> database.
 * @param {(value: unknown) => any | Promise<any>} options.from - Function executed when transforming *from* database -> app.
 * @returns {Function} A property decorator that stores transform metadata.
 *
 * @throws {Error} If the property name cannot be determined.
 *
 * @example
 * ```ts
 * class User {
 *   @Transform({
 *     to: (v) => JSON.stringify(v),
 *     from: (v) => JSON.parse(v),
 *   })
 *   profile;
 * }
 * ```
 */
export declare const Transform: ({ to, from }: {
    to: (value: unknown) => any | Promise<any>;
    from: (value: unknown) => any | Promise<any>;
}) => Function;
/**
 * Decorator to attach validation rules to a model property.
 *
 * Accepts a `TValidateSchemaDecorator` object describing the validation rules
 * (e.g., type, required, length, regex match, uniqueness, or custom validation function).
 * The validation schema is stored as metadata on the target class.
 *
 * @param {TValidateSchemaDecorator} validate - An object defining validation rules for the property.
 * @returns {Function} A decorator that registers the validation schema.
 *
 * @example
 * ```ts
 * class User extends Model {
 *
 *   @Column(() => Blueprint.int().notNull().primary().autoIncrement())
 *   public id!: number;
 *
 *   @Column(() => Blueprint.varchar(50).null())
 *   public uuid!: string;
 *
 *   @Column(() => Blueprint.varchar(50).null())
 *   @Validate({
 *       type: String,
 *       require: true,
 *       length: 50,
 *       match: /^[a-zA-Z0-9._]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}$/,
 *       unique: true,
 *       fn: async (email: string) => {
 *         const exists = await new User().where('email',email).exists();
 *         if(exists) return `This column "${email}" is dupicate`;
 *         return null;
 *       }
 *   })
 *   public email!: string;
 * }
 *
 * ```
 */
export declare const Validate: (validate: TValidateSchemaDecorator) => Function;
/**
 * Decorator to define a HasOne relationship on a model property.
 *
 * @param {RelationOptions} options - Options describing the relation.
 * @returns {Function} A decorator that registers the HasOne relationship.
 *
 * @example
 * ```ts
 * class Profile extends Model {}
 *
 * class User extends Model {
 *   @HasOne({ model: Profile })
 *   public profile!: Profile;
 * }
 *
 * ```
 */
export declare const HasOne: (fn: (() => new () => Model) | RelationOptions) => Function;
/**
 * Decorator to define a HasMany relationship on a model property.
 *
 * @param {RelationOptions} options - Options describing the relation.
 * @returns {Function} A decorator that registers the HasMany relationship.
 *
 * @example
 * ```ts
 * class Post extends Model {}
 *
 * class User extends Model {
 *   @HasMany({ model: Post })
 *   public posts!: Post[];
 * }
 *
 * ```
 */
export declare const HasMany: (fn: (() => new () => Model) | RelationOptions) => Function;
/**
 * Decorator to define a BelongsTo relationship on a model property.
 *
 * @param {RelationOptions} options - Options describing the relation.
 * @returns {Function} A decorator that registers the BelongsTo relationship.
 *
 * @example
 * ```ts
 * class User extends Model {}
 *
 * class Post extends Model {
 *   @BelongsTo({ model: User })
 *   public author!: User;
 * }
 *
 * ```
 */
export declare const BelongsTo: (fn: (() => new () => Model) | RelationOptions) => Function;
/**
 * Decorator to define a BelongsToMany (many-to-many) relationship on a model property.
 *
 * @param {RelationOptions} options - Options describing the relation.
 * @returns {Function} A decorator that registers the BelongsToMany relationship.
 *
 * @example
 * ```ts
 * class Role extends Model {}
 *
 * class User extends Model {
 *   @BelongsToMany({ model: Role, pivotTable: 'user_roles' })
 *   public roles!: Role[];
 * }
 *
 * ```
 */
export declare const BelongsToMany: (fn: (() => new () => Model) | RelationOptions) => Function;
/**
 * Decorator to attach an observer class to a model.
 *
 * The observer class should have `selected`, `created`, `updated`, and `deleted` methods.
 *
 * @param {new () => { selected: Function; created: Function; updated: Function; deleted: Function }} observer - Observer class constructor.
 * @returns {ClassDecorator} A class decorator that sets the model observer.
 *
 * @example
 * ```ts
 * class UserObserver {
 *   selected() {}
 *   created() {}
 *   updated() {}
 *   deleted() {}
 * }
 *
 * @Observer(UserObserver)
 * class User extends Model {}
 * ```
 */
export declare const Observer: (observer: new () => {
    selected: Function;
    created: Function;
    updated: Function;
    deleted: Function;
}) => ClassDecorator;
/**
 * Decorator that registers a method as a generic lifecycle hook.
 * Unlike specific hooks such as `@BeforeInsert` or `@AfterUpdate`,
 * this decorator is **multi-purpose** and collects all tagged methods
 * into a single metadata registry (`REFLECT_META.HOOKS`).
 *
 * These hook methods can later be invoked by the ORM/engine at any stage
 * depending on your custom logic.
 *
 * @returns {Function} A method decorator.
 *
 * @throws {Error} If applied to a non-method class member.
 *
 * @example
 * ```ts
 * class User {
 *   @Hooks()
 *   logAction() {
 *     console.log("A lifecycle action happened");
 *   }
 * }
 * ```
 *
 * @example
 * // Later, your ORM engine could do:
 * const hooks = Reflect.getMetadata(REFLECT_META.HOOKS, userInstance) || [];
 * for (const hook of hooks) hook.call(userInstance);
 */
export declare const Hooks: () => Function;
/**
 * Decorator that registers a method to be executed **before an insert operation**.
 * Works similarly to TypeORM's `@BeforeInsert`.
 *
 * The decorated method will be stored in metadata and executed later by the ORM engine.
 *
 * @returns {Function} A method decorator.
 *
 * @throws {Error} If applied to a non-function member.
 *
 * @example
 * ```ts
 * class User {
 *   @BeforeInsert()
 *   setCreatedAt() {
 *     this.createdAt = new Date();
 *   }
 * }
 * ```
 */
export declare const BeforeInsert: () => Function;
/**
 * Decorator that registers a method to be executed **before an update operation**.
 *
 * @returns {Function} A method decorator.
 *
 * @throws {Error} If applied to a non-function member.
 *
 * @example
 * ```ts
 * class User {
 *   @BeforeUpdate()
 *   updateTimestamp() {
 *     this.updatedAt = new Date();
 *   }
 * }
 * ```
 */
export declare const BeforeUpdate: () => Function;
/**
 * Decorator that registers a method to be executed **before a remove/delete operation**.
 *
 * @returns {Function} A method decorator.
 *
 * @throws {Error} If applied to a non-function member.
 *
 * @example
 * ```ts
 * class User {
 *   @BeforeRemove()
 *   handleBeforeDelete() {
 *     console.log("User will be deleted");
 *   }
 * }
 * ```
 */
export declare const BeforeRemove: () => Function;
/**
 * Decorator that registers a method to be executed **after an insert operation**.
 *
 * @returns {Function} A method decorator.
 *
 * @throws {Error} If applied to a non-function member.
 *
 * @example
 * ```ts
 * class User {
 *   @AfterInsert()
 *   notifyCreated() {
 *     console.log("User inserted");
 *   }
 * }
 * ```
 */
export declare const AfterInsert: () => Function;
/**
 * Decorator that registers a method to be executed **after an update operation**.
 *
 * @returns {Function} A method decorator.
 *
 * @throws {Error} If applied to a non-function member.
 *
 * @example
 * ```ts
 * class User {
 *   @AfterUpdate()
 *   logUpdate() {
 *     console.log("User updated");
 *   }
 * }
 * ```
 */
export declare const AfterUpdate: () => Function;
/**
 * Decorator that registers a method to be executed **after a remove/delete operation**.
 *
 * @returns {Function} A method decorator.
 *
 * @throws {Error} If applied to a non-function member.
 *
 * @example
 * ```ts
 * class User {
 *   @AfterRemove()
 *   logDeletion() {
 *     console.log("User removed");
 *   }
 * }
 * ```
 */
export declare const AfterRemove: () => Function;
/**
 * Collection of decorators used for defining
 * database models, columns, relations, hooks, and validation.
 *
 * @namespace D
 */
export declare const D: {
    Table: (name: string) => ClassDecorator;
    TableSingular: () => ClassDecorator;
    TablePlural: () => ClassDecorator;
    UUID: (column?: string) => ClassDecorator;
    /**
     * Decorator to enable automatic timestamps on a model.
     *
     * Stores metadata indicating that `createdAt` and `updatedAt` columns should be handled.
     *
     * @param {{ createdAt: string; updatedAt: string }} [columns] - Optional custom column names for timestamps.
     * @returns {ClassDecorator} A class decorator that enables timestamp metadata.
     *
     * @example
     * ```ts
     * @Timestamp({ createdAt: 'created_at', updatedAt: 'updated_at' })
     * class User extends Model {}
     * ```
   */
    SoftDelete: (column?: string) => ClassDecorator;
    Timestamp: (columns?: {
        createdAt: string;
        updatedAt: string;
    }) => ClassDecorator;
    Pattern: (pattern: TPattern) => ClassDecorator;
    CamelCase: () => ClassDecorator;
    SnakeCase: () => ClassDecorator;
    /**
     * Decorator to define a database column for a model property.
     *
     * Accepts a `Blueprint` function that defines the column type, constraints, and other attributes.
     * The resulting column schema is stored as metadata on the target class.
     *
     * @param {() => Blueprint} blueprint - A function returning a `Blueprint` instance describing the column.
     * @returns {Function} A property decorator that registers the column schema.
     *
     * @throws {Error} If the property name cannot be determined.
     *
     * @example
     * ```ts
     * class User extends Model {
     *
     *   @Column(() => Blueprint.int().notNull().primary().autoIncrement())
     *   public id!: number;
     *
     *   @Column(() => Blueprint.varchar(50).null())
     *   public uuid!: string;
     * }
     *
     * ```
     */
    Column: (blueprint: () => Blueprint) => Function;
    /**
     * Decorator to attach validation rules to a model property.
     *
     * Accepts a `TValidateSchemaDecorator` object describing the validation rules
     * (e.g., type, required, length, regex match, uniqueness, or custom validation function).
     * The validation schema is stored as metadata on the target class.
     *
     * @param {TValidateSchemaDecorator} validate - An object defining validation rules for the property.
     * @returns {Function} A decorator that registers the validation schema.
     *
     * @example
     * ```ts
     * class User extends Model {
     *
     *   @Column(() => Blueprint.int().notNull().primary().autoIncrement())
     *   public id!: number;
     *
     *   @Column(() => Blueprint.varchar(50).null())
     *   public uuid!: string;
     *
     *   @Column(() => Blueprint.varchar(50).null())
     *   @Validate({
     *       type: String,
     *       require: true,
     *       length: 50,
     *       match: /^[a-zA-Z0-9._]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}$/,
     *       unique: true,
     *       fn: async (email: string) => {
     *         const exists = await new User().where('email',email).exists();
     *         if(exists) return `This column "${email}" is dupicate`;
     *         return null;
     *       }
     *   })
     *   public email!: string;
     * }
     *
     * ```
     */
    Validate: (validate: TValidateSchemaDecorator) => Function;
    HasOne: (fn: (() => new () => Model) | RelationOptions) => Function;
    HasMany: (fn: (() => new () => Model) | RelationOptions) => Function;
    BelongsTo: (fn: (() => new () => Model) | RelationOptions) => Function;
    BelongsToMany: (fn: (() => new () => Model) | RelationOptions) => Function;
    /**
     * A decorator factory that registers custom `to` and `from` transform functions
     * for a property. Useful for serialization/deserialization logic (e.g. ORM, DTO).
     *
     * @param {Object} options - Transform options.
     * @param {(value: unknown) => any | Promise<any>} options.to - Function executed when transforming *to* app -> database.
     * @param {(value: unknown) => any | Promise<any>} options.from - Function executed when transforming *from* database -> app.
     * @returns {Function} A property decorator that stores transform metadata.
     *
     * @throws {Error} If the property name cannot be determined.
     *
     * @example
     * ```ts
     * class User {
     *   @Transform({
     *     to: (v) => JSON.stringify(v),
     *     from: (v) => JSON.parse(v),
     *   })
     *   profile;
     * }
     * ```
   */
    Transform: ({ to, from }: {
        to: (value: unknown) => any | Promise<any>;
        from: (value: unknown) => any | Promise<any>;
    }) => Function;
    /**
     * Decorator that registers a method as a generic lifecycle hook.
     * Unlike specific hooks such as `@BeforeInsert` or `@AfterUpdate`,
     * this decorator is **multi-purpose** and collects all tagged methods
     * into a single metadata registry (`REFLECT_META.HOOKS`).
     *
     * These hook methods can later be invoked by the ORM/engine at any stage
     * depending on your custom logic.
     *
     * @returns {Function} A method decorator.
     *
     * @throws {Error} If applied to a non-method class member.
     *
     * @example
     * ```ts
     * class User {
     *   @Hooks()
     *   logAction() {
     *     console.log("A lifecycle action happened");
     *   }
     * }
     * ```
     *
     * @example
     * // Later, your ORM engine could do:
     * const hooks = Reflect.getMetadata(REFLECT_META.HOOKS, userInstance) || [];
     * for (const hook of hooks) hook.call(userInstance);
     */
    Hooks: () => Function;
    Observer: (observer: new () => {
        selected: Function;
        created: Function;
        updated: Function;
        deleted: Function;
    }) => ClassDecorator;
    BeforeInsert: () => Function;
    BeforeUpdate: () => Function;
    BeforeRemove: () => Function;
    AfterInsert: () => Function;
    AfterUpdate: () => Function;
    AfterRemove: () => Function;
};
export {};