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import * as express from 'express'
import { UserRight } from '../../../../shared/models/users/user-right.enum'
import { getFormattedObjects } from '../../../helpers'
import { logger } from '../../../helpers/logger'
import { getServerAccount } from '../../../helpers/utils'
import { getAccountFromWebfinger } from '../../../helpers/webfinger'
import { SERVER_ACCOUNT_NAME } from '../../../initializers/constants'
import { database as db } from '../../../initializers/database'
import { sendFollow } from '../../../lib/activitypub/send-request'
import { asyncMiddleware, paginationValidator, setFollowersSort, setPagination } from '../../../middlewares'
import { authenticate } from '../../../middlewares/oauth'
import { setBodyHostsPort } from '../../../middlewares/servers'
import { setFollowingSort } from '../../../middlewares/sort'
import { ensureUserHasRight } from '../../../middlewares/user-right'
import { followValidator } from '../../../middlewares/validators/servers'
import { followersSortValidator, followingSortValidator } from '../../../middlewares/validators/sort'
const applicationFollowsRouter = express.Router()
applicationFollowsRouter.get('/following',
paginationValidator,
followingSortValidator,
setFollowingSort,
setPagination,
asyncMiddleware(listFollowing)
)
applicationFollowsRouter.post('/follow',
authenticate,
ensureUserHasRight(UserRight.MANAGE_APPLICATION_FOLLOW),
followValidator,
setBodyHostsPort,
asyncMiddleware(follow)
)
applicationFollowsRouter.get('/followers',
paginationValidator,
followersSortValidator,
setFollowersSort,
setPagination,
asyncMiddleware(listFollowers)
)
// ---------------------------------------------------------------------------
export {
applicationFollowsRouter
}
// ---------------------------------------------------------------------------
async function listFollowing (req: express.Request, res: express.Response, next: express.NextFunction) {
const applicationAccount = await getServerAccount()
const resultList = await db.AccountFollow.listFollowingForApi(applicationAccount.id, req.query.start, req.query.count, req.query.sort)
return res.json(getFormattedObjects(resultList.data, resultList.total))
}
async function listFollowers (req: express.Request, res: express.Response, next: express.NextFunction) {
const applicationAccount = await getServerAccount()
const resultList = await db.AccountFollow.listFollowersForApi(applicationAccount.id, req.query.start, req.query.count, req.query.sort)
return res.json(getFormattedObjects(resultList.data, resultList.total))
}
async function follow (req: express.Request, res: express.Response, next: express.NextFunction) {
const hosts = req.body.hosts as string[]
const fromAccount = await getServerAccount()
const tasks: Promise<any>[] = []
const accountName = SERVER_ACCOUNT_NAME
for (const host of hosts) {
// We process each host in a specific transaction
// First, we add the follow request in the database
// Then we send the follow request to other account
const p = loadLocalOrGetAccountFromWebfinger(accountName, host)
.then(accountResult => {
let targetAccount = accountResult.account
return db.sequelize.transaction(async t => {
if (accountResult.loadedFromDB === false) {
targetAccount = await targetAccount.save({ transaction: t })
}
const [ accountFollow ] = await db.AccountFollow.findOrCreate({
where: {
accountId: fromAccount.id,
targetAccountId: targetAccount.id
},
defaults: {
state: 'pending',
accountId: fromAccount.id,
targetAccountId: targetAccount.id
},
transaction: t
})
// Send a notification to remote server
if (accountFollow.state === 'pending') {
await sendFollow(fromAccount, targetAccount, t)
}
})
})
.catch(err => logger.warn('Cannot follow server %s.', `${accountName}@${host}`, err))
tasks.push(p)
}
// Don't make the client wait the tasks
Promise.all(tasks)
.catch(err => {
logger.error('Error in follow.', err)
})
return res.status(204).end()
}
async function loadLocalOrGetAccountFromWebfinger (name: string, host: string) {
let loadedFromDB = true
let account = await db.Account.loadByNameAndHost(name, host)
if (!account) {
const nameWithDomain = name + '@' + host
account = await getAccountFromWebfinger(nameWithDomain)
loadedFromDB = false
}
return { account, loadedFromDB }
}
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