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var Immutable = require('immutable');
var jsonschema = require('jsonschema');
var jsonSchemaDefaults = require('json-schema-defaults');
var Promise = require('../utils/promise');
var error = require('../utils/error');
var mergeDefaults = require('../utils/mergeDefaults');
/**
Validate one plugin for a book and update book's confiration
@param {Book}
@param {Plugin}
@return {Book}
*/
function validatePluginConfig(book, plugin) {
var config = book.getConfig();
var packageInfos = plugin.getPackage();
var configKey = [
'pluginsConfig',
plugin.getName()
].join('.');
var pluginConfig = config.getValue(configKey, {}).toJS();
var schema = (packageInfos.get('gitbook') || Immutable.Map()).toJS();
if (!schema) return book;
// Normalize schema
schema.id = '/' + configKey;
schema.type = 'object';
// Validate and throw if invalid
var v = new jsonschema.Validator();
var result = v.validate(pluginConfig, schema, {
propertyName: configKey
});
// Throw error
if (result.errors.length > 0) {
throw new error.ConfigurationError(new Error(result.errors[0].stack));
}
// Insert default values
var defaults = jsonSchemaDefaults(schema);
pluginConfig = mergeDefaults(pluginConfig, defaults);
// Update configuration
config = config.setValue(configKey, pluginConfig);
// Return new book
return book.set('config', config);
}
/**
Validate a book configuration for plugins and
returns an update configuration with default values.
@param {Book}
@param {OrderedMap<String:Plugin>}
@return {Promise<Book>}
*/
function validateConfig(book, plugins) {
return Promise.reduce(plugins, function(newBook, plugin) {
return validatePluginConfig(newBook, plugin);
}, book);
}
module.exports = validateConfig;
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