Load configuration from YAML file.

shard.yml

@@ -10,7 +10,7 @@ targets:
 
 dependencies:
   telepathy:
-    git: http://dev.danilafe.com/Crystal-Bots/telepathy
+    git: https://dev.danilafe.com/Crystal-Bots/telepathy
   cron_scheduler:
     github: kostya/cron_scheduler
   sqlite3:

src/joann-pupper-bot.cr

@@ -1,112 +1,18 @@
 require "./joann-pupper-bot/*"
-require "logger"
-require "telepathy"
-require "time"
-require "sqlite3"
-require "cron_scheduler"
+require "option_parser"
 
+config_file = "./config.yaml"
 
-# Chat IDs
-CHATID_JOANN = 215301902_i64
-CHATID_DANIEL = 220888832_i64
-DATABASE_URL = "sqlite3://./data.sqlite"
-BOT_TOKEN = "599474797:AAEmjQNO32uqurI16blS9FT4OoO7GdUZ6h0"
-EXTENSIONS = ["png", "jpeg", "jpg"]
-LOGGER = Logger.new(STDOUT)
-
-class BotConfiguration
-  JSON.mapping(
-    subreddits: Array(String),
-    send_cron: String,
-    refresh_cron: String,
-    recepients: Array(Int64))
-
-  def initialize
-    @subreddits = [ "rarepuppers" ]
-    @send_cron = "*/30 8-21 * * *"
-    @refresh_cron = "*/15 * * * *"
-    @recepients = [ CHATID_DANIEL ]
-  end
-end
-
-class PupperBot
-   @db : DB::Database
-
-  def initialize(@configuration : BotConfiguration)
-    @telegram_bot = Telepathy::Bot.new BOT_TOKEN
-    @db = DB.open DATABASE_URL
-    initialize_db
-    update_database
-    initialize_timers
-    initialize_telegram
-    send_broadcast
-  end
-
-  def initialize
-    initialize BotConfiguration.new
-  end
-
-  private def initialize_db
-    @db.exec "create table if not exists posts(id integer primary key, title text, url text unique)"
-    @db.exec "create table if not exists recepient_posts(recepient integer, post integer, foreign key(post) references posts(id))"
-  end
-
-  private def initialize_timers
-    CronScheduler.define do
-      at(@configuration.send_cron) { send_broadcast }
-      at(@configuration.refresh_cron) { update_database }
-    end
+OptionParser.parse do |parser|
+  parser.banner = "Usage: joann-pupper-bot [arguments]"
+  parser.on("-c", "--config=CONFIG", "Select config file") do |c|
+    config_file = c
   end
-
-  private def initialize_telegram
-    @telegram_bot.command "ping" do |update, args|
-      @telegram_bot.send_message(update.message.as(Telepathy::Message).chat.id, "pong")
-    end
-
-    @telegram_bot.command "pupper" do |update, args|
-      command_chatid = update.message.as(Telepathy::Message).chat.id
-      send_single command_chatid
-    end
-
-    @telegram_bot.poll
-  end
-
-  def send_single(chatid)
-    unsent_query = "select id, title, url from posts where not exists (select * from recepient_posts where recepient=? and post=id) limit 1"
-
-    unless to_send = @db.query_one? unsent_query, chatid, as: { Int64, String, String }
-      LOGGER.info "Unable to find a post to send to #{chatid}."
-      return
-    end
-
-    id, title, url = to_send
-    LOGGER.info "Using URL #{url} for request from #{chatid}"
-    @db.exec "insert into recepient_posts(recepient, post) values(?, ?)", chatid, id
-    @telegram_bot.send_photo(chatid, url, title)
-  end
-
-  def send_broadcast
-    @configuration.recepients.each do |recepient|
-      send_single recepient
-    end
-  end
-
-  def update_database
-    unless response = RedditResponse.from_subreddits(@configuration.subreddits)
-      LOGGER.info "Unable to find more posts for the database"
-      return
-    end
-
-    posts = response.data.posts_matching { |post| EXTENSIONS.any? { |it| post.url.ends_with? it } }
-    posts.each do |post|
-      LOGGER.info "Trying to save post #{post.title} #{post.url}"
-      begin
-        @db.exec "insert into posts(title, url) values(?, ?)", post.title, post.url
-      rescue
-      end
-    end
+  parser.on("-h", "--help", "Show this message") do
+    puts parser
+    exit
   end
 end
 
-botc = PupperBot.new
+botc = PupperBot.new(BotConfiguration.from_yaml(File.open(config_file)))
 sleep

src/joann-pupper-bot/bot.cr

@@ -0,0 +1,83 @@
+require "logger"
+require "telepathy"
+require "time"
+require "sqlite3"
+require "cron_scheduler"
+
+EXTENSIONS = ["png", "jpeg", "jpg"]
+LOGGER = Logger.new(STDOUT)
+
+class PupperBot
+   @db : DB::Database
+
+  def initialize(@configuration : BotConfiguration)
+    @telegram_bot = Telepathy::Bot.new configuration.token
+    @db = DB.open "sqlite3://#{configuration.database}"
+    initialize_db
+    update_database
+    initialize_timers
+    initialize_telegram
+    send_broadcast
+  end
+
+  private def initialize_db
+    @db.exec "create table if not exists posts(id integer primary key, title text, url text unique)"
+    @db.exec "create table if not exists recepient_posts(recepient integer, post integer, foreign key(post) references posts(id))"
+  end
+
+  private def initialize_timers
+    CronScheduler.define do
+      at(@configuration.send_cron) { send_broadcast }
+      at(@configuration.refresh_cron) { update_database }
+    end
+  end
+
+  private def initialize_telegram
+    @telegram_bot.command "ping" do |update, args|
+      @telegram_bot.send_message(update.message.as(Telepathy::Message).chat.id, "pong")
+    end
+
+    @telegram_bot.command "pupper" do |update, args|
+      command_chatid = update.message.as(Telepathy::Message).chat.id
+      send_single command_chatid
+    end
+
+    @telegram_bot.poll
+  end
+
+  def send_single(chatid)
+    unsent_query = "select id, title, url from posts where not exists (select * from recepient_posts where recepient=? and post=id) limit 1"
+
+    unless to_send = @db.query_one? unsent_query, chatid, as: { Int64, String, String }
+      LOGGER.info "Unable to find a post to send to #{chatid}."
+      return
+    end
+
+    id, title, url = to_send
+    LOGGER.info "Using URL #{url} for request from #{chatid}"
+    @db.exec "insert into recepient_posts(recepient, post) values(?, ?)", chatid, id
+    @telegram_bot.send_photo(chatid, url, title)
+  end
+
+  def send_broadcast
+    @configuration.recipients.each do |recepient|
+      send_single recepient
+    end
+  end
+
+  def update_database
+    unless response = RedditResponse.from_subreddits(@configuration.subreddits)
+      LOGGER.info "Unable to find more posts for the database"
+      return
+    end
+
+    posts = response.data.posts_matching { |post| EXTENSIONS.any? { |it| post.url.ends_with? it } }
+    posts.each do |post|
+      LOGGER.info "Trying to save post #{post.title} #{post.url}"
+      begin
+        @db.exec "insert into posts(title, url) values(?, ?)", post.title, post.url
+      rescue
+      end
+    end
+  end
+end

src/joann-pupper-bot/config.cr

@@ -0,0 +1,11 @@
+require "yaml"
+
+class BotConfiguration
+  YAML.mapping(
+    token: String,
+    database: { type: String, default: "./data.sqlite" },
+    subreddits: { type: Array(String), default: [ "rarepuppers" ] },
+    send_cron: { type: String, default: "*/30 8-21 * * *" },
+    refresh_cron: { type: String, default: "*/15 * * * *" },
+    recipients: Array(Int64))
+end