import Joi from '@hapi/joi';

import IdValidate from './id';

export default class MaterialValidate {  // validate input for material
  private static material = {
    name: Joi.string()
      .max(128),

    supplier: Joi.string()
      .max(128),

    group: Joi.string()
      .max(128),

    mineral: Joi.number()
      .integer()
      .min(0)
      .max(100),

    glass_fiber: Joi.number()
      .integer()
      .min(0)
      .max(100),

    carbon_fiber: Joi.number()
      .integer()
      .min(0)
      .max(100),

    numbers: Joi.array()
      .items(Joi.object({
        color: Joi.string()
          .max(128)
          .required(),
        number: Joi.string()
          .max(128)
          .allow('')
          .required()
      }))
  };

  static input (data, param) {  // validate input, set param to 'new' to make all attributes required
    if (param === 'new') {
      return Joi.object({
        name: this.material.name.required(),
        supplier: this.material.supplier.required(),
        group: this.material.group.required(),
        mineral: this.material.mineral.required(),
        glass_fiber: this.material.glass_fiber.required(),
        carbon_fiber: this.material.carbon_fiber.required(),
        numbers: this.material.numbers.required()
      }).validate(data);
    }
    else if (param === 'change') {
      return Joi.object({
        name: this.material.name,
        supplier: this.material.supplier,
        group: this.material.group,
        mineral: this.material.mineral,
        glass_fiber: this.material.glass_fiber,
        carbon_fiber: this.material.carbon_fiber,
        numbers: this.material.numbers
      }).validate(data);
    }
    else {
      return{error: 'No parameter specified!', value: {}};
    }
  }

  static output (data) {  // validate output and strip unwanted properties, returns null if not valid
    data = IdValidate.stringify(data);
    const {value, error} = Joi.object({
      _id: IdValidate.get(),
      name: this.material.name,
      supplier: this.material.supplier,
      group: this.material.group,
      mineral: this.material.mineral,
      glass_fiber: this.material.glass_fiber,
      carbon_fiber: this.material.carbon_fiber,
      numbers: this.material.numbers
    }).validate(data, {stripUnknown: true});
    return error !== undefined? null : value;
  }

  static outputGroups (data)  {// validate groups output and strip unwanted properties, returns null if not valid
    const {value, error} = this.material.group.validate(data, {stripUnknown: true});
    return error !== undefined? null : value;
  }

  static outputSuppliers (data)  {// validate suppliers output and strip unwanted properties, returns null if not valid
    const {value, error} = this.material.supplier.validate(data, {stripUnknown: true});
    return error !== undefined? null : value;
  }

  static outputV() {  // return output validator
    return Joi.object({
      _id: IdValidate.get(),
      name: this.material.name,
      supplier: this.material.supplier,
      group: this.material.group,
      mineral: this.material.mineral,
      glass_fiber: this.material.glass_fiber,
      carbon_fiber: this.material.carbon_fiber,
      numbers: this.material.numbers
    });
  }
}