text.js
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text.js
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	"use strict";
	const Promise = require("bluebird");
	const escape = require("escape-html");

	module.exports = {
	name: "text",
	has_index: function(params){
	if(params.full_text_search){
	return "text";
	}else{
	return false;
	}
	},
	get_description: function(context, params){
	return `Text with maximum length ${params.max_length}`;
	},
	is_proper_value: function(context, params, new_value){
	const checks = [];
	if(params.min_length){
	checks.push((text) => {
	if(text.length < params.min_length){
	return Promise.reject(`Text '${new_value}' is too short, minimum length is ${params.min_length} chars.`);
	}
	});
	}
	if(params.max_length){
	checks.push((text) => {
	if(text.length > params.max_length){
	return Promise.reject(`Text '${new_value}' has exceeded max length of ${params.max_length} chars`);
	}
	});
	}
	return Promise.all(checks.map(fn => fn(new_value)))
	.then(() => Promise.resolve());
	},
	encode: function(context, params, value_in_code){
	if (typeof value_in_code === "string" && value_in_code !== null){
	const result = {
	"original": value_in_code,
	"safe": escape(value_in_code),
	valueOf: function(){
	return value_in_code;
	},
	};
	return Promise.resolve(result);
	} else {
	return Promise.resolve(null);
	}
	},
	format: function(context, params, decoded_value, format){
	if(decoded_value === null \|\| decoded_value === undefined){
	return Promise.resolve(decoded_value);
	}
	if(format === undefined){
	return decoded_value.safe;
	}
	return decoded_value[format] ? decoded_value[format] : decoded_value;
	},
	};