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int.js
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int.js
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const locreq = require("locreq")(__dirname);
const Errors = locreq("lib/response/error.js");
const human_comparators_to_query = {
">": "$gt",
gt: "$gt",
gte: "$gte",
">=": "$gte",
"=>": "$gte",
"<": "$lt",
lt: "$lt",
lte: "$lte",
"<=": "$lte",
"=<": "$lte",
"=": "$eq",
};
const proper_value_checkers = [
(params, value) => {
if (Number.isFinite(params.min) && value < params.min)
return [
false,
`Value should be larger or equal to '${params.min}'.`,
];
else return [true];
},
(params, value) => {
if (Number.isFinite(params.max) && value > params.max)
return [
false,
`Value should be smaller or equal to '${params.max}'.`,
];
else return [true];
},
];
const int = {
name: "int",
get_description: () => "An integer number.",
is_proper_value: function (context, params, new_value) {
const number = parseInt(new_value, 10);
if (
number.toString() !== new_value.toString().trim() ||
number === null ||
isNaN(number)
) {
return Promise.reject(
`Value '${new_value}' is not a int number format.`
);
}
const failed_checks = proper_value_checkers
.map((fn) => fn(params, new_value))
.filter((element) => !element[0]);
if (!failed_checks.length) {
return Promise.resolve();
}
return Promise.reject(failed_checks.map((e) => e[1]).join(" "));
},
encode: (context, params, value_in_code) => parseInt(value_in_code, 10),
filter_to_query: function (context, params, field_filter) {
if (typeof field_filter !== "object") {
return {
$eq: parseInt(field_filter, 10),
};
}
// treating filter as a query here
const new_filter = {};
for (const comparator in field_filter) {
const new_comparator = human_comparators_to_query[comparator];
if (new_comparator === undefined) {
throw new Errors.ValidationError(
`Unknown comparator: '${comparator}'.`
);
}
new_filter[new_comparator] = parseInt(field_filter[comparator], 10);
}
return new_filter;
},
};
module.exports = int;

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