const Joi = require('joi');

const baseSchema = {
  name: Joi.string().max(255).required(),
  template_type: Joi.string().max(50).required(),
  subject_template: Joi.string().max(500).allow('', null),
  body_html: Joi.string().required(),
  description: Joi.string().allow('', null),
  active: Joi.boolean().default(true),
};

const createSchema = Joi.object(baseSchema);

const updateSchema = Joi.object({
  ...baseSchema,
});

const previewSchema = Joi.object({
  template_html: Joi.string().required(),
  company_name: Joi.string().allow('', null),
  employee_name: Joi.string().allow('', null),
});

exports.validateCreateTemplate = (req, res, next) => {
  const { error, value } = createSchema.validate(req.body, { abortEarly: false });
  if (error) {
    return res.status(400).json({
      success: false,
      error: 'Validation failed',
      details: error.details.map((detail) => detail.message),
    });
  }
  req.body = value;
  next();
};

exports.validateUpdateTemplate = (req, res, next) => {
  const { error, value } = updateSchema.validate(req.body, { abortEarly: false });
  if (error) {
    return res.status(400).json({
      success: false,
      error: 'Validation failed',
      details: error.details.map((detail) => detail.message),
    });
  }
  req.body = value;
  next();
};

exports.validatePreviewTemplate = (req, res, next) => {
  const { error, value } = previewSchema.validate(req.body, { abortEarly: false });
  if (error) {
    return res.status(400).json({
      success: false,
      error: 'Validation failed',
      details: error.details.map((detail) => detail.message),
    });
  }
  req.body = value;
  next();
};