284 lines
7.8 KiB
JavaScript
Executable File
284 lines
7.8 KiB
JavaScript
Executable File
'use strict';
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const Assert = require('@hapi/hoek/lib/assert');
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const Common = require('./common');
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const Ref = require('./ref');
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const internals = {};
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exports.schema = function (Joi, config, options = {}) {
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Common.assertOptions(options, ['appendPath', 'override']);
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try {
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return internals.schema(Joi, config, options);
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}
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catch (err) {
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if (options.appendPath &&
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err.path !== undefined) {
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err.message = `${err.message} (${err.path})`;
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}
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throw err;
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}
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};
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internals.schema = function (Joi, config, options) {
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Assert(config !== undefined, 'Invalid undefined schema');
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if (Array.isArray(config)) {
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Assert(config.length, 'Invalid empty array schema');
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if (config.length === 1) {
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config = config[0];
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}
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}
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const valid = (base, ...values) => {
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if (options.override !== false) {
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return base.valid(Joi.override, ...values);
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}
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return base.valid(...values);
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};
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if (internals.simple(config)) {
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return valid(Joi, config);
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}
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if (typeof config === 'function') {
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return Joi.custom(config);
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}
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Assert(typeof config === 'object', 'Invalid schema content:', typeof config);
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if (Common.isResolvable(config)) {
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return valid(Joi, config);
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}
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if (Common.isSchema(config)) {
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return config;
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}
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if (Array.isArray(config)) {
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for (const item of config) {
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if (!internals.simple(item)) {
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return Joi.alternatives().try(...config);
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}
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}
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return valid(Joi, ...config);
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}
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if (config instanceof RegExp) {
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return Joi.string().regex(config);
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}
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if (config instanceof Date) {
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return valid(Joi.date(), config);
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}
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Assert(Object.getPrototypeOf(config) === Object.getPrototypeOf({}), 'Schema can only contain plain objects');
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return Joi.object().keys(config);
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};
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exports.ref = function (id, options) {
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return Ref.isRef(id) ? id : Ref.create(id, options);
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};
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exports.compile = function (root, schema, options = {}) {
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Common.assertOptions(options, ['legacy']);
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// Compiled by any supported version
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const any = schema && schema[Common.symbols.any];
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if (any) {
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Assert(options.legacy || any.version === Common.version, 'Cannot mix different versions of joi schemas:', any.version, Common.version);
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return schema;
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}
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// Uncompiled root
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if (typeof schema !== 'object' ||
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!options.legacy) {
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return exports.schema(root, schema, { appendPath: true }); // Will error if schema contains other versions
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}
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// Scan schema for compiled parts
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const compiler = internals.walk(schema);
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if (!compiler) {
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return exports.schema(root, schema, { appendPath: true });
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}
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return compiler.compile(compiler.root, schema);
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};
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internals.walk = function (schema) {
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if (typeof schema !== 'object') {
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return null;
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}
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if (Array.isArray(schema)) {
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for (const item of schema) {
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const compiler = internals.walk(item);
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if (compiler) {
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return compiler;
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}
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}
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return null;
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}
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const any = schema[Common.symbols.any];
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if (any) {
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return { root: schema[any.root], compile: any.compile };
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}
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Assert(Object.getPrototypeOf(schema) === Object.getPrototypeOf({}), 'Schema can only contain plain objects');
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for (const key in schema) {
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const compiler = internals.walk(schema[key]);
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if (compiler) {
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return compiler;
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}
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}
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return null;
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};
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internals.simple = function (value) {
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return value === null || ['boolean', 'string', 'number'].includes(typeof value);
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};
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exports.when = function (schema, condition, options) {
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if (options === undefined) {
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Assert(condition && typeof condition === 'object', 'Missing options');
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options = condition;
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condition = Ref.create('.');
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}
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if (Array.isArray(options)) {
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options = { switch: options };
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}
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Common.assertOptions(options, ['is', 'not', 'then', 'otherwise', 'switch', 'break']);
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// Schema condition
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if (Common.isSchema(condition)) {
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Assert(options.is === undefined, '"is" can not be used with a schema condition');
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Assert(options.not === undefined, '"not" can not be used with a schema condition');
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Assert(options.switch === undefined, '"switch" can not be used with a schema condition');
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return internals.condition(schema, { is: condition, then: options.then, otherwise: options.otherwise, break: options.break });
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}
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// Single condition
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Assert(Ref.isRef(condition) || typeof condition === 'string', 'Invalid condition:', condition);
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Assert(options.not === undefined || options.is === undefined, 'Cannot combine "is" with "not"');
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if (options.switch === undefined) {
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let rule = options;
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if (options.not !== undefined) {
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rule = { is: options.not, then: options.otherwise, otherwise: options.then, break: options.break };
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}
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let is = rule.is !== undefined ? schema.$_compile(rule.is) : schema.$_root.invalid(null, false, 0, '').required();
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Assert(rule.then !== undefined || rule.otherwise !== undefined, 'options must have at least one of "then", "otherwise", or "switch"');
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Assert(rule.break === undefined || rule.then === undefined || rule.otherwise === undefined, 'Cannot specify then, otherwise, and break all together');
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if (options.is !== undefined &&
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!Ref.isRef(options.is) &&
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!Common.isSchema(options.is)) {
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is = is.required(); // Only apply required if this wasn't already a schema or a ref
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}
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return internals.condition(schema, { ref: exports.ref(condition), is, then: rule.then, otherwise: rule.otherwise, break: rule.break });
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}
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// Switch statement
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Assert(Array.isArray(options.switch), '"switch" must be an array');
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Assert(options.is === undefined, 'Cannot combine "switch" with "is"');
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Assert(options.not === undefined, 'Cannot combine "switch" with "not"');
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Assert(options.then === undefined, 'Cannot combine "switch" with "then"');
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const rule = {
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ref: exports.ref(condition),
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switch: [],
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break: options.break
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};
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for (let i = 0; i < options.switch.length; ++i) {
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const test = options.switch[i];
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const last = i === options.switch.length - 1;
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Common.assertOptions(test, last ? ['is', 'then', 'otherwise'] : ['is', 'then']);
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Assert(test.is !== undefined, 'Switch statement missing "is"');
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Assert(test.then !== undefined, 'Switch statement missing "then"');
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const item = {
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is: schema.$_compile(test.is),
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then: schema.$_compile(test.then)
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};
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if (!Ref.isRef(test.is) &&
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!Common.isSchema(test.is)) {
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item.is = item.is.required(); // Only apply required if this wasn't already a schema or a ref
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}
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if (last) {
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Assert(options.otherwise === undefined || test.otherwise === undefined, 'Cannot specify "otherwise" inside and outside a "switch"');
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const otherwise = options.otherwise !== undefined ? options.otherwise : test.otherwise;
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if (otherwise !== undefined) {
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Assert(rule.break === undefined, 'Cannot specify both otherwise and break');
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item.otherwise = schema.$_compile(otherwise);
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}
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}
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rule.switch.push(item);
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}
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return rule;
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};
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internals.condition = function (schema, condition) {
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for (const key of ['then', 'otherwise']) {
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if (condition[key] === undefined) {
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delete condition[key];
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}
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else {
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condition[key] = schema.$_compile(condition[key]);
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}
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}
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return condition;
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};
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