95 lines
3.4 KiB
Clojure
95 lines
3.4 KiB
Clojure
(ns isahn.core
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(:require
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[config.core :refer [env]]
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[clojure.java.io :as io]
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[clj-http.client :as client]
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[cheshire.core :as json])
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(:gen-class))
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;; VARIABLES
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;; URL send for Telegram
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(def url_telegram_send (str "https://api.telegram.org/" (:bot_token env) "/sendMessage"))
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;; URLs from API Hacker News
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(def url_all_stories "https://hacker-news.firebaseio.com/v0/topstories.json")
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;; Min score
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(def min_score (:min_score env))
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;; Now unixtime
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(def now (quot (System/currentTimeMillis) 1000))
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;; 24h in unixtime
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(def unixtime24h 86400)
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;; Now - 24h
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(def min_time (- now unixtime24h))
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;; Path file save history
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(def path_history "isahn_history.json")
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(def history (if (.exists (io/file path_history)) (json/parse-string (slurp (io/file path_history)) true) (str "")))
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(def history_ids (map :id history))
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;; FUNCTIONS
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(defn one_story
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" Get url from item "
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[id]
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(str "https://hacker-news.firebaseio.com/v0/item/" id ".json"))
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(defn get_all_stories
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" Get all stories "
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[url_all_stories]
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;; Get all ids stories
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(let [ids_stories (json/parse-string (:body (client/get url_all_stories {:accept :json})))
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urls_stories (map one_story ids_stories)]
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;; Get all API urls stories
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;; Get all data stories
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(map #(json/parse-string (:body (client/get % {:accept :json}))) urls_stories)))
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(defn lazy-contains? [col key]
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(some #{key} col))
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(defn set-interval
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"Run function every ms"
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[callback ms]
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(future (while true (do (Thread/sleep ms) (callback)))))
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(defn add_history
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"Add to file history news_stories"
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[news_stories]
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(let [history_news_ids (concat history_ids (map #(get-in % ["id"]) news_stories))
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history_all (map #(assoc {} :id %) (vec history_news_ids))]
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(with-open [w (clojure.java.io/writer path_history :append false)]
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(.write w (json/generate-string history_all)))))
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(defn filter_stories
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"Filter stories by last 24h, remove histories and lower score"
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[stories]
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;; Filter created less 24h
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(let [stories_24h (filter #(> (get-in % ["time"]) min_time) stories)
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;; Filter history
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stories_without_histories (filter #(not (lazy-contains? history_ids (get-in % ["id"]))) stories_24h)]
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;; Filter with score min_score
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(filter #(> (get-in % ["score"]) min_score) stories_without_histories)))
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(defn send_stories_telegram
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"Send stories by Telegram Channel"
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[stories]
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(if (not-empty stories) (doall (iterate #((client/post url_telegram_send {:body (json/generate-string {:chat_id (:chat env)
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:text (str (get-in % ["title"]) ": " (get-in % ["url"]))
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:disable_notification true})
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:content-type :json
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:accept :json})) stories))))
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(defn check_stories
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" Check news stories and send message to Telegram "
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[]
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(let [stories_top (filter_stories (get_all_stories url_all_stories))]
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(doall (add_history stories_top))
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(doall (send_stories_telegram stories_top))))
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(defn -main
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"Main execution"
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[]
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;; Run first time
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(check_stories)
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;; Run every :run_every_miliseconds
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(set-interval check_stories (:run_every_miliseconds env)))
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