88 lines
3.3 KiB
JavaScript
88 lines
3.3 KiB
JavaScript
const Middleware = require('libflitter/middleware/Middleware')
|
|
|
|
/*
|
|
* RequiredFields Middleware
|
|
* -------------------------------------------------------------
|
|
* Put some description here!
|
|
*/
|
|
class RequiredFields extends Middleware {
|
|
static get services() {
|
|
return [...super.services, 'configs', 'output', 'utility']
|
|
}
|
|
|
|
/*
|
|
* Run the middleware test.
|
|
* This method is required by all Flitter middleware.
|
|
* It should either call the next function in the stack,
|
|
* or it should handle the response accordingly.
|
|
*/
|
|
async test(req, res, next, args){
|
|
// Do stuff here
|
|
const search_fields = args.search ? (Array.isArray(args.search) ? args.search : [args.search]) : ['params', 'body', 'query']
|
|
const form_config = this.configs.get('api:forms:'+args.form)
|
|
const values = {}
|
|
|
|
for ( const field in form_config.fields ) {
|
|
if ( !form_config.fields.hasOwnProperty(field) ) continue
|
|
const field_config = form_config.fields[field]
|
|
let field_value = this.get_field({ request: req, field, search_fields })
|
|
|
|
if ( !field_value ) {
|
|
if ( field_config.required ) {
|
|
return this.fail({ response: res, reason: `Missing required field: ${field}`})
|
|
}
|
|
} else {
|
|
if ( field_config.infer !== false ) {
|
|
field_value = this.utility.infer(field_value)
|
|
}
|
|
|
|
if ( field_config.coerce ) {
|
|
field_value = field_config.coerce(field_value)
|
|
|
|
if ( field_config.coerce === Number && isNaN(field_value) ) {
|
|
return this.fail({ response: res, reason: 'Invalid numerical value for field: '+field })
|
|
}
|
|
}
|
|
|
|
if ( field_config.in_set ) {
|
|
if ( Array.isArray(field_config.in_set) ) {
|
|
if ( !field_config.in_set.includes(field_value) ) {
|
|
return this.fail({ response: res, reason: `Invalid value for ${field}. Value must be one of: ${field_config.join(', ')}`})
|
|
}
|
|
} else {
|
|
this.output.warn(`[Middleware RequiredFields] Invalid in_set for ${field} in ${args.form}. Must be array.`)
|
|
}
|
|
}
|
|
|
|
values[field] = field_value
|
|
}
|
|
}
|
|
|
|
req.form = values
|
|
|
|
/*
|
|
* Call the next function in the stack.
|
|
*/
|
|
next()
|
|
}
|
|
|
|
get_field({ request, field, search_fields }) {
|
|
for ( const search_field of search_fields ) {
|
|
if ( Object.keys(request).includes(search_field) ) {
|
|
if ( Object.keys(request[search_field]).includes(field) ) {
|
|
return request[search_field][field]
|
|
}
|
|
} else {
|
|
this.output.warn(`[Middleware RequiredFields] Requested search of request field that does not exist: ${search_field}`)
|
|
this.output.debug(`[Middleware RequiredFields] Available request keys: ${Object.keys(request).join(', ')}`)
|
|
}
|
|
}
|
|
}
|
|
|
|
fail({ response, reason }) {
|
|
return response.status(400).message(reason).api({})
|
|
}
|
|
}
|
|
|
|
module.exports = exports = RequiredFields
|