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import * as express from 'express'
import { body, param } from 'express-validator/check'
import { isTestInstance } from '../../helpers/core-utils'
import { isEachUniqueHostValid, isHostValid } from '../../helpers/custom-validators/servers'
import { logger } from '../../helpers/logger'
import { getServerActor } from '../../helpers/utils'
import { SERVER_ACTOR_NAME, WEBSERVER } from '../../initializers'
import { ActorFollowModel } from '../../models/activitypub/actor-follow'
import { areValidationErrors } from './utils'
import { ActorModel } from '../../models/activitypub/actor'
import { loadActorUrlOrGetFromWebfinger } from '../../helpers/webfinger'
import { isValidActorHandle } from '../../helpers/custom-validators/activitypub/actor'
const followValidator = [
body('hosts').custom(isEachUniqueHostValid).withMessage('Should have an array of unique hosts'),
(req: express.Request, res: express.Response, next: express.NextFunction) => {
// Force https if the administrator wants to make friends
if (isTestInstance() === false && WEBSERVER.SCHEME === 'http') {
return res.status(500)
.json({
error: 'Cannot follow on a non HTTPS web server.'
})
.end()
}
logger.debug('Checking follow parameters', { parameters: req.body })
if (areValidationErrors(req, res)) return
return next()
}
]
const removeFollowingValidator = [
param('host').custom(isHostValid).withMessage('Should have a valid host'),
async (req: express.Request, res: express.Response, next: express.NextFunction) => {
logger.debug('Checking unfollowing parameters', { parameters: req.params })
if (areValidationErrors(req, res)) return
const serverActor = await getServerActor()
const follow = await ActorFollowModel.loadByActorAndTargetNameAndHostForAPI(serverActor.id, SERVER_ACTOR_NAME, req.params.host)
if (!follow) {
return res
.status(404)
.json({
error: `Following ${req.params.host} not found.`
})
.end()
}
res.locals.follow = follow
return next()
}
]
const getFollowerValidator = [
param('nameWithHost').custom(isValidActorHandle).withMessage('Should have a valid nameWithHost'),
async (req: express.Request, res: express.Response, next: express.NextFunction) => {
logger.debug('Checking get follower parameters', { parameters: req.params })
if (areValidationErrors(req, res)) return
let follow: ActorFollowModel
try {
const actorUrl = await loadActorUrlOrGetFromWebfinger(req.params.nameWithHost)
const actor = await ActorModel.loadByUrl(actorUrl)
const serverActor = await getServerActor()
follow = await ActorFollowModel.loadByActorAndTarget(actor.id, serverActor.id)
} catch (err) {
logger.warn('Cannot get actor from handle.', { handle: req.params.nameWithHost, err })
}
if (!follow) {
return res
.status(404)
.json({
error: `Follower ${req.params.nameWithHost} not found.`
})
.end()
}
res.locals.follow = follow
return next()
}
]
const acceptOrRejectFollowerValidator = [
(req: express.Request, res: express.Response, next: express.NextFunction) => {
logger.debug('Checking accept/reject follower parameters', { parameters: req.params })
const follow = res.locals.follow
if (follow.state !== 'pending') {
return res.status(400).json({ error: 'Follow is not in pending state.' }).end()
}
return next()
}
]
// ---------------------------------------------------------------------------
export {
followValidator,
removeFollowingValidator,
getFollowerValidator,
acceptOrRejectFollowerValidator
}
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