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- import dotenv from 'dotenv'
- import express from 'express'
- import redis from 'redis'
- import pg from 'pg'
-
- dotenv.config()
-
- const pgConfigs = {
- development: {
- database: 'mastodon_development',
- host: '/var/run/postgresql',
- max: 10
- },
-
- production: {
- user: process.env.DB_USER || 'mastodon',
- password: process.env.DB_PASS || '',
- database: process.env.DB_NAME || 'mastodon_production',
- host: process.env.DB_HOST || 'localhost',
- port: process.env.DB_PORT || 5432,
- max: 10
- }
- }
-
- const app = express()
- const env = process.env.NODE_ENV || 'development'
- const pgPool = new pg.Pool(pgConfigs[env])
-
- const authenticationMiddleware = (req, res, next) => {
- const authorization = req.get('Authorization')
-
- if (!authorization) {
- err = new Error('Missing access token')
- err.statusCode = 401
-
- return next(err)
- }
-
- const token = authorization.replace(/^Bearer /, '')
-
- pgPool.connect((err, client, done) => {
- if (err) {
- return next(err)
- }
-
- client.query('SELECT oauth_access_tokens.resource_owner_id, users.account_id FROM oauth_access_tokens INNER JOIN users ON oauth_access_tokens.resource_owner_id = users.id WHERE token = $1 LIMIT 1', [token], (err, result) => {
- done()
-
- if (err) {
- return next(err)
- }
-
- if (result.rows.length === 0) {
- err = new Error('Invalid access token')
- err.statusCode = 401
-
- return next(err)
- }
-
- req.accountId = result.rows[0].account_id
-
- next()
- })
- })
- }
-
- const errorMiddleware = (err, req, res, next) => {
- res.writeHead(err.statusCode || 500, { 'Content-Type': 'application/json' })
- res.end(JSON.stringify({ error: `${err}` }))
- }
-
- const streamFrom = (id, res) => {
- res.setHeader('Content-Type', 'text/event-stream')
- res.setHeader('Transfer-Encoding', 'chunked')
-
- const redisClient = redis.createClient()
-
- redisClient.on('message', (channel, message) => {
- const { event, payload } = JSON.parse(message)
-
- res.write(`event: ${event}\n`)
- res.write(`data: ${payload}\n\n`)
- })
-
- setInterval(() => res.write('\n'), 15000)
-
- redisClient.subscribe(id)
- }
-
- app.use(authenticationMiddleware)
- app.use(errorMiddleware)
-
- app.get('/api/v1/streaming/user', (req, res) => streamFrom(`timeline:${req.accountId}`, res))
- app.get('/api/v1/streaming/public', (_, res) => streamFrom('timeline:public', res))
- app.get('/api/v1/streaming/hashtag', (req, res) => streamFrom(`timeline:hashtag:${req.params.tag}`, res))
-
- app.listen(4000)
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