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mastodon-bot.cljs
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mastodon-bot.cljs
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#!/usr/bin/env lumo
(ns mastodon-bot.core
(:require
[cljs.core :refer [*command-line-args*]]
[cljs.reader :as edn]
[clojure.set :refer [rename-keys]]
[clojure.string :as string]
["fs" :as fs]
["http" :as http]
["https" :as https]
["mastodon-api" :as mastodon]
["rss-parser" :as rss]
["tumblr" :as tumblr]
["twitter" :as twitter]))
(defn exit-with-error [error]
(js/console.error error)
(js/process.exit 1))
(defn find-config []
(or (first *command-line-args*)
(-> js/process .-env .-MASTODON_BOT_CONFIG)
"config.edn"))
(def config (-> (find-config) (fs/readFileSync #js {:encoding "UTF-8"}) edn/read-string))
(def mastodon-client (or (some-> config :mastodon clj->js mastodon.)
(exit-with-error "missing Mastodon client configuration!")))
(def content-filter-regexes (mapv re-pattern (-> config :mastodon :content-filters)))
(def append-screen-name? (boolean (-> config :mastodon :append-screen-name?)))
(def max-post-length (-> config :mastodon :max-post-length))
(defn blocked-content? [text]
(boolean (some #(re-find % text) content-filter-regexes)))
(defn js->edn [data]
(js->clj data :keywordize-keys true))
(defn trim-text [text]
(cond
(nil? max-post-length)
text
(> (count text) max-post-length)
(reduce
(fn [text word]
(if (> (+ (count text) (count word)) (- max-post-length 3))
(reduced (str text "..."))
(str text " " word)))
""
(clojure.string/split text #" "))
:else text))
(defn delete-status [status]
(.delete mastodon-client (str "statuses/" status) #js {}))
(defn post-status
([status-text]
(post-status status-text nil))
([status-text media-ids]
(.post mastodon-client "statuses"
(clj->js (merge {:status (if-let [signature (-> config :mastodon :signature)]
(str status-text "\n" signature)
status-text)}
(when media-ids {:media_ids media-ids}))))))
(defn post-image [image-stream description callback]
(-> (.post mastodon-client "media" #js {:file image-stream :description description})
(.then #(-> % .-data .-id callback))))
(defn post-status-with-images
([status-text urls]
(post-status-with-images status-text urls []))
([status-text [url & urls] ids]
(if url
(.get (if (string/starts-with? url "https://") https http) url
(fn [image-stream]
(post-image image-stream status-text #(post-status-with-images status-text urls (conj ids %)))))
(post-status status-text (not-empty ids)))))
(defn get-mastodon-timeline [callback]
(.then (.get mastodon-client "timelines/home" #js {}) #(-> % .-data js->edn callback)))
(defn post-items [last-post-time items]
(doseq [{:keys [text media-links]} (->> items
(remove #(blocked-content? (:text %)))
(filter #(> (:created-at %) last-post-time)))]
(if media-links
(post-status-with-images text media-links)
(post-status text))))
(defn parse-tweet [{created-at :created_at
text :full_text
{:keys [media]} :extended_entities
{:keys [screen_name]} :user :as tweet}]
{:created-at (js/Date. created-at)
:text (trim-text (if append-screen-name? (str text "\n - " screen_name) text))
:media-links (keep #(when (= (:type %) "photo") (:media_url_https %)) media)})
(defmulti parse-tumblr-post :type)
(defmethod parse-tumblr-post "text" [{:keys [body date short_url]}]
{:created-at (js/Date. date)
:text (str (trim-text body) "\n\n" short_url)})
(defmethod parse-tumblr-post "photo" [{:keys [caption date photos short_url] :as post}]
{:created-at (js/Date. date)
:text (string/join "\n" [(string/replace caption #"<[^>]*>" "") short_url])
:media-links (mapv #(-> % :original_size :url) photos)})
(defmethod parse-tumblr-post :default [post])
(defn post-tumblrs [last-post-time]
(fn [err response]
(->> response
js->edn
:posts
(mapv parse-tumblr-post)
(post-items last-post-time))))
(defn post-tweets [last-post-time]
(fn [error tweets response]
(->> (js->edn tweets)
(map parse-tweet)
(post-items last-post-time))))
(defn strip-utm [news-link]
(first (string/split news-link #"\?utm")))
(defn parse-feed [last-post-time parser [title url]]
(-> (.parseURL parser url)
(.then #(post-items
last-post-time
(for [{:keys [title isoDate pubDate content link]} (-> % js->edn :items)]
{:created-at (js/Date. (or isoDate pubDate))
:text (str (trim-text title) "\n\n" (strip-utm link))})))))
(defn twitter-client [access-keys]
(try
(twitter. (clj->js access-keys))
(catch js/Error e
(exit-with-error
(str "failed to connect to Twitter: " (.-message e))))))
(defn tumblr-client [access-keys account]
(try
(tumblr/Blog. account (clj->js access-keys))
(catch js/Error e
(exit-with-error
(str "failed to connect to Tumblr account " account ": " (.-message e))))))
(get-mastodon-timeline
(fn [timeline]
(let [last-post-time (-> timeline first :created_at (js/Date.))]
;;post from Twitter
(when-let [twitter-config (:twitter config)]
(let [{:keys [access-keys accounts include-replies? include-rts?]} twitter-config
client (twitter-client access-keys)]
(doseq [account accounts]
(.get client
"statuses/user_timeline"
#js {:screen_name account
:tweet_mode "extended"
:include_rts (boolean include-replies?)
:exclude_replies (boolean include-rts?)}
(post-tweets last-post-time)))))
;;post from Tumblr
(when-let [{:keys [accounts limit tumblr-oauth]} (:tumblr config)]
(doseq [account accounts]
(let [client (tumblr-client access-keys account)]
(.posts client #js {:limit (or limit 5)} (post-tumblrs last-post-time)))))
;;post from RSS
(when-let [feeds (some-> config :rss)]
(let [parser (rss.)]
(doseq [feed feeds]
(parse-feed last-post-time parser feed)))))))