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'use strict';
var SCALAR_TYPES = ['number', 'integer', 'string', 'boolean', 'null'];
module.exports = function defFunc(ajv) {
defFunc.definition = {
type: 'array',
compile: function(keys, parentSchema, it) {
var equal = it.util.equal;
var scalar = getScalarKeys(keys, parentSchema);
return function(data) {
if (data.length > 1) {
for (var k=0; k < keys.length; k++) {
var i, key = keys[k];
if (scalar[k]) {
var hash = {};
for (i = data.length; i--;) {
if (!data[i] || typeof data[i] != 'object') continue;
var prop = data[i][key];
if (prop && typeof prop == 'object') continue;
if (typeof prop == 'string') prop = '"' + prop;
if (hash[prop]) return false;
hash[prop] = true;
}
} else {
for (i = data.length; i--;) {
if (!data[i] || typeof data[i] != 'object') continue;
for (var j = i; j--;) {
if (data[j] && typeof data[j] == 'object' && equal(data[i][key], data[j][key]))
return false;
}
}
}
}
}
return true;
};
},
metaSchema: {
type: 'array',
items: {type: 'string'}
}
};
ajv.addKeyword('uniqueItemProperties', defFunc.definition);
return ajv;
};
function getScalarKeys(keys, schema) {
return keys.map(function(key) {
var properties = schema.items && schema.items.properties;
var propType = properties && properties[key] && properties[key].type;
return Array.isArray(propType)
? propType.indexOf('object') < 0 && propType.indexOf('array') < 0
: SCALAR_TYPES.indexOf(propType) >= 0;
});
}