/
index.js
275 lines (225 loc) · 6.9 KB
/
index.js
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const https = require('https')
const core = require('@actions/core')
class Main {
constructor() {
// Auth
this.username = core.getInput('username', { required: true })
this.password = core.getInput('password', { required: true })
this.appId = core.getInput('app-id', { required: true })
this.appSecret = core.getInput('app-secret', { required: true })
// Post
this.subreddit = core.getInput('subreddit', { required: true })
this.title = core.getInput('title', { required: true })
this.url = core.getInput('url', { required: true })
this.flairId = core.getInput('flair-id')
this.flairText = core.getInput('flair-text')
// Comment
this.comment = core.getInput('comment')
// Others
this.notification = core.getInput('notification') === 'true'
this.retryRateLimit = +core.getInput('retry-rate-limit')
this.userAgent = `Release for Reddit (by /u/${this.username})`
// Will be init by function below since it's async
this.accessToken = ''
}
// The main logic here
async start() {
await this.initAccessToken()
const postData = await this.submitPost()
core.info(`View post at ${postData.url}`)
core.setOutput('postUrl', postData.url)
if (this.comment) {
const commentData = await this.commentPost(postData.name)
const commentUrl = `https://www.reddit.com${commentData.permalink}`
core.info(`View comment at ${commentUrl}`)
core.setOutput('commentUrl', commentUrl)
// Notifications are enabled by default for comments.
// So only disable if the user wants to.
if (!this.notification) {
this.editSendReplies(commentData.name, false)
}
}
}
async initAccessToken() {
const result = await this._post(
{
host: 'www.reddit.com',
path: '/api/v1/access_token',
auth: `${this.appId}:${this.appSecret}`,
},
{
grant_type: 'password',
username: this.username,
password: this.password,
}
)
this.accessToken = result['access_token']
}
async submitPost() {
let postData = {
api_type: 'json',
resubmit: true,
sr: this.subreddit,
title: this.title,
flair_id: this.flairId,
flair_text: this.flairText,
sendreplies: this.notification,
}
// https://www.reddit.com/r/test/comments/fjlsg1/test/
// ------
const redditPostUrlRegex = /^https?:\/\/.*reddit.com\/(?:(.*?)\/){4}/
const match = this.url.match(redditPostUrlRegex)
if (match) {
postData.kind = 'crosspost'
postData.crosspost_fullname = `t3_${match[1]}`
} else {
postData.kind = 'link'
postData.url = this.url
}
const result = await this._retryIfRateLimit(async () => {
const r = await this._post(
{
host: 'oauth.reddit.com',
path: `/api/submit`,
headers: {
Authorization: `Bearer ${this.accessToken}`,
},
},
postData
)
// Check error here so we can retry if hit rate limit.
// Reddit returns code 200 for rate limit for some reason.
if (r.json.errors.length) {
throw new Error(r.json.errors)
}
return r
})
return result.json.data
}
async commentPost(postId) {
const result = await this._retryIfRateLimit(async () => {
const r = await this._post(
{
host: 'oauth.reddit.com',
path: `/api/comment`,
headers: {
Authorization: `Bearer ${this.accessToken}`,
},
},
{
api_type: 'json',
text: this.comment,
thing_id: postId,
}
)
// Check error here so we can retry if hit rate limit.
// Reddit returns code 200 for rate limit for some reason.
if (r.json.errors.length) {
throw new Error(r.json.errors)
}
return r
})
const resultData = result.json.data
if (resultData && resultData.things && resultData.things[0]) {
return resultData.things[0].data
}
return resultData
}
async editSendReplies(thingId, state) {
await this._retryIfRateLimit(async () => {
const r = await this._post(
{
host: 'oauth.reddit.com',
path: `/api/sendreplies`,
headers: {
Authorization: `Bearer ${this.accessToken}`,
},
},
{
id: thingId,
state,
}
)
// Check error here so we can retry if hit rate limit.
// Reddit returns code 200 for rate limit for some reason.
if (r && r.json && r.json.errors && r.json.errors.length) {
throw new Error(r.json.errors)
}
return r
})
}
_post(options, data) {
const postData = this._encodeForm(data)
const reqOptions = {
...options,
method: 'POST',
headers: {
...options.headers,
'User-Agent': this.userAgent,
'Content-Type': 'application/x-www-form-urlencoded',
'Content-Length': Buffer.byteLength(postData),
},
}
return new Promise((resolve, reject) => {
const req = https.request(reqOptions, (res) => {
res.setEncoding('utf8')
let data = ''
res.on('data', (chunk) => {
data += chunk
})
res.on('error', (e) => reject(e))
res.on('end', () => resolve(JSON.parse(data)))
})
req.on('error', (e) => reject(e))
req.write(postData)
req.end()
})
}
/**
* Retry function again if hit rate limit
* @param {Function} fn
* @param {number} retryCount The number of retries. If 0, will not retry again.
* @returns The return type of fn
*/
async _retryIfRateLimit(fn, retryCount = this.retryRateLimit) {
try {
return await fn()
} catch (e) {
const rateLimit = this._getRateLimitSeconds(e.message)
if (rateLimit > 0 && retryCount > 0) {
core.info(`Rate limit hit. Waiting ${rateLimit} seconds to retry...`)
await this._wait(rateLimit * 1000)
return await this._retryIfRateLimit(fn, retryCount - 1)
}
throw e
}
}
_getRateLimitSeconds(errorMessage) {
// This is a very naive way of overcoming the RATELIMIT but I have no choice
const matchMessage = errorMessage.match(
/RATELIMIT.*try again in (\d*) (s|m)/
)
if (!matchMessage || matchMessage.length < 3) {
return -1
}
let rateLimitSeconds = matchMessage[1]
if (matchMessage[2] === 'm') {
// Convert minute to seconds
rateLimitSeconds *= 60
}
// Add 1 minute as buffer, just in case
rateLimitSeconds += 60
return rateLimitSeconds
}
async _wait(ms) {
return new Promise((resolve) => {
setTimeout(() => resolve(), ms)
})
}
_encodeForm(data) {
return Object.entries(data)
.map((v) => v.map(encodeURIComponent).join('='))
.join('&')
}
}
new Main().start().catch((e) => core.setFailed(e.message))