/**
 * MIT License
 *
 * Copyright (c) 2016 Richard Adams (https://github.com/enriched)
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

export interface JSONSchema {
  $ref?: string;
  /////////////////////////////////////////////////
  // Schema Metadata
  /////////////////////////////////////////////////
  /**
   * This is important because it tells refs where
   * the root of the document is located
   */
  id?: string;
  /**
   * It is recommended that the meta-schema is
   * included in the root of any JSON Schema
   */
  $schema?: JSONSchema;
  /**
   * Title of the schema
   */
  title?: string;
  /**
   * Schema description
   */
  description?: string;
  /**
   * Default json for the object represented by
   * this schema
   */
  'default'?: any;

  /////////////////////////////////////////////////
  // Number Validation
  /////////////////////////////////////////////////
  /**
   * The value must be a multiple of the number
   * (e.g. 10 is a multiple of 5)
   */
  multipleOf?: number;
  maximum?: number;
  /**
   * If true maximum must be > value, >= otherwise
   */
  exclusiveMaximum?: boolean;
  minimum?: number;
  /**
   * If true minimum must be < value, <= otherwise
   */
  exclusiveMinimum?: boolean;

  /////////////////////////////////////////////////
  // String Validation
  /////////////////////////////////////////////////
  maxLength?: number;
  minLength?: number;
  /**
   * This is a regex string that the value must
   * conform to
   */
  pattern?: string;

  /////////////////////////////////////////////////
  // Array Validation
  /////////////////////////////////////////////////
  additionalItems?: boolean | JSONSchema;
  items?: JSONSchema | JSONSchema[];
  maxItems?: number;
  minItems?: number;
  uniqueItems?: boolean;

  /////////////////////////////////////////////////
  // Object Validation
  /////////////////////////////////////////////////
  maxProperties?: number;
  minProperties?: number;
  required?: string[];
  additionalProperties?: boolean | JSONSchema;
  /**
   * Holds simple JSON Schema definitions for
   * referencing from elsewhere.
   */
  definitions?: {[key: string]: JSONSchema};
  /**
   * The keys that can exist on the object with the
   * json schema that should validate their value
   */
  properties?: {[property: string]: JSONSchema};
  /**
   * The key of this object is a regex for which
   * properties the schema applies to
   */
  patternProperties?: {[pattern: string]: JSONSchema};
  /**
   * If the key is present as a property then the
   * string of properties must also be present.
   * If the value is a JSON Schema then it must
   * also be valid for the object if the key is
   * present.
   */
  dependencies?: {[key: string]: JSONSchema | string[]};

  /////////////////////////////////////////////////
  // Generic
  /////////////////////////////////////////////////
  /**
   * Enumerates the values that this schema can be
   * e.g.
   * {"type": "string",
   *  "enum": ["red", "green", "blue"]}
   */
  'enum'?: any[];
  /**
   * The basic type of this schema, can be one of
   * [string, number, object, array, boolean, null]
   * or an array of the acceptable types
   */
  type?: string | string[];

  /////////////////////////////////////////////////
  // Combining Schemas
  /////////////////////////////////////////////////
  allOf?: JSONSchema[];
  anyOf?: JSONSchema[];
  oneOf?: JSONSchema[];
  /**
   * The entity being validated must not match this schema
   */
  not?: JSONSchema;
}