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var mongoose = require('mongoose');
var Schema = mongoose.Schema;

var TemplateSchema = new Schema(
  {
    name: { type: String, required: true, unique: true },
    ext: { type: String, required: true, unique: false },
  },
  { timestamps: true },
);

/*
 *** Statics ***
 */

// Get all templates
TemplateSchema.statics.getAll = () => {
  return new Promise((resolve, reject) => {
    var query = Template.find();
    query.select('name ext');
    query
      .exec()
      .then(rows => {
        resolve(rows);
      })
      .catch(err => {
        reject(err);
      });
  });
};

// Get one template
TemplateSchema.statics.getOne = templateId => {
  return new Promise((resolve, reject) => {
    var query = Template.findById(templateId);
    query.select('name ext');
    query
      .exec()
      .then(rows => {
        resolve(rows);
      })
      .catch(err => {
        reject(err);
      });
  });
};

// Create template
TemplateSchema.statics.create = template => {
  return new Promise((resolve, reject) => {
    var query = new Template(template);
    query
      .save()
      .then(row => {
        resolve({ _id: row._id, name: row.name, ext: row.ext });
      })
      .catch(err => {
        if (err.code === 11000)
          reject({
            fn: 'BadParameters',
            message: 'Template name already exists',
          });
        else reject(err);
      });
  });
};

// Update template
TemplateSchema.statics.update = (templateId, template) => {
  return new Promise((resolve, reject) => {
    var query = Template.findByIdAndUpdate(templateId, template);
    query
      .exec()
      .then(rows => {
        if (rows) resolve(rows);
        else reject({ fn: 'NotFound', message: 'Template not found' });
      })
      .catch(err => {
        if (err.code === 11000)
          reject({
            fn: 'BadParameters',
            message: 'Template name already exists',
          });
        else reject(err);
      });
  });
};

// Delete template
TemplateSchema.statics.delete = templateId => {
  return new Promise((resolve, reject) => {
    var query = Template.findByIdAndDelete(templateId);
    query
      .exec()
      .then(rows => {
        if (rows) resolve(rows);
        else reject({ fn: 'NotFound', message: 'Template not found' });
      })
      .catch(err => {
        reject(err);
      });
  });
};

/*
 *** Methods ***
 */

var Template = mongoose.model('Template', TemplateSchema);
module.exports = Template;