197 lines
7.3 KiB
Lua
197 lines
7.3 KiB
Lua
local bot = {}
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local bindings -- Bot API bindings.
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local utilities -- Miscellaneous and shared plugins.
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bot.version = '3.13'
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-- Function to be run on start and reload.
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function bot:init(config)
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bindings = require('otouto.bindings')
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utilities = require('otouto.utilities')
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assert(
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config.bot_api_key,
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'You did not set your bot token in the config!'
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)
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self.BASE_URL = 'https://api.telegram.org/bot' .. config.bot_api_key .. '/'
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-- Fetch bot information. Try until it succeeds.
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repeat
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print('Fetching bot information...')
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self.info = bindings.getMe(self)
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until self.info
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self.info = self.info.result
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-- Load the "database"! ;)
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self.database_name = config.database_name or self.info.username .. '.db'
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if not self.database then
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self.database = utilities.load_data(self.database_name)
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end
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-- Migration code 1.12 -> 1.13
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-- Back to administration global ban list; copy over current blacklist.
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if self.database.version ~= '3.13' then
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if self.database.administration then
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self.database.administration.globalbans = self.database.administration.globalbans or self.database.blacklist or {}
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utilities.save_data(self.database_name, self.database)
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self.database = utilities.load_data(self.database_name)
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end
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end
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-- End migration code.
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-- Table to cache user info (usernames, IDs, etc).
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self.database.users = self.database.users or {}
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-- Table to store userdata (nicknames, lastfm usernames, etc).
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self.database.userdata = self.database.userdata or {}
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-- Table to store the IDs of blacklisted users.
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self.database.blacklist = self.database.blacklist or {}
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-- Save the bot's version in the database to make migration simpler.
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self.database.version = bot.version
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-- Add updated bot info to the user info cache.
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self.database.users[tostring(self.info.id)] = self.info
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-- All plugins go into self.plugins. Plugins which accept forwarded messages
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-- and messages from blacklisted users also go into self.panoptic_plugins.
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self.plugins = {}
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self.panoptic_plugins = {}
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for _, pname in ipairs(config.plugins) do
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local plugin = require('otouto.plugins.'..pname)
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table.insert(self.plugins, plugin)
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if plugin.init then plugin.init(self, config) end
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if plugin.panoptic then table.insert(self.panoptic_plugins, plugin) end
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if plugin.doc then plugin.doc = '```\n'..plugin.doc..'\n```' end
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if not plugin.triggers then plugin.triggers = {} end
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end
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print('@' .. self.info.username .. ', AKA ' .. self.info.first_name ..' ('..self.info.id..')')
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-- Set loop variables.
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self.last_update = self.last_update or 0 -- Update offset.
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self.last_cron = self.last_cron or os.date('%M') -- Last cron job.
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self.last_database_save = self.last_database_save or os.date('%H') -- Last db save.
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self.is_started = true
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end
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-- Function to be run on each new message.
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function bot:on_msg_receive(msg, config)
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-- Do not process old messages.
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if msg.date < os.time() - 5 then return end
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-- plugint is the array of plugins we'll check the message against.
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-- If the message is forwarded or from a blacklisted user, the bot will only
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-- check against panoptic plugins.
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local plugint = self.plugins
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local from_id_str = tostring(msg.from.id)
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-- Cache user info for those involved.
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self.database.users[from_id_str] = msg.from
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if msg.reply_to_message then
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self.database.users[tostring(msg.reply_to_message.from.id)] = msg.reply_to_message.from
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elseif msg.forward_from then
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-- Forwards only go to panoptic plugins.
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plugint = self.panoptic_plugins
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self.database.users[tostring(msg.forward_from.id)] = msg.forward_from
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elseif msg.new_chat_member then
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self.database.users[tostring(msg.new_chat_member.id)] = msg.new_chat_member
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elseif msg.left_chat_member then
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self.database.users[tostring(msg.left_chat_member.id)] = msg.left_chat_member
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end
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-- Messages from blacklisted users only go to panoptic plugins.
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if self.database.blacklist[from_id_str] then
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plugint = self.panoptic_plugins
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end
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-- If no text, use captions.
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msg.text = msg.text or msg.caption or ''
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msg.text_lower = msg.text:lower()
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if msg.reply_to_message then
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msg.reply_to_message.text = msg.reply_to_message.text or msg.reply_to_message.caption or ''
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end
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-- Support deep linking.
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if msg.text:match('^'..config.cmd_pat..'start .+') then
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msg.text = config.cmd_pat .. utilities.input(msg.text)
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msg.text_lower = msg.text:lower()
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end
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-- If the message is forwarded or comes from a blacklisted yser,
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-- Do the thing.
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for _, plugin in ipairs(plugint) do
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for _, trigger in ipairs(plugin.triggers) do
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if string.match(msg.text_lower, trigger) then
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local success, result = pcall(function()
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return plugin.action(self, msg, config)
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end)
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if not success then
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-- If the plugin has an error message, send it. If it does
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-- not, use the generic one specified in config. If it's set
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-- to false, do nothing.
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if plugin.error then
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utilities.send_reply(self, msg, plugin.error)
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elseif plugin.error == nil then
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utilities.send_reply(self, msg, config.errors.generic)
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end
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utilities.handle_exception(self, result, msg.from.id .. ': ' .. msg.text, config)
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msg = nil
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return
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-- Continue if the return value is true.
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elseif result ~= true then
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msg = nil
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return
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end
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end
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end
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end
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msg = nil
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end
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-- main
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function bot:run(config)
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bot.init(self, config)
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while self.is_started do
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-- Update loop.
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local res = bindings.getUpdates(self, { timeout = 20, offset = self.last_update + 1 } )
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if res then
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-- Iterate over every new message.
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for _,v in ipairs(res.result) do
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self.last_update = v.update_id
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if v.message then
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bot.on_msg_receive(self, v.message, config)
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end
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end
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else
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print('Connection error while fetching updates.')
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end
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-- Run cron jobs every minute.
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if self.last_cron ~= os.date('%M') then
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self.last_cron = os.date('%M')
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for i,v in ipairs(self.plugins) do
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if v.cron then -- Call each plugin's cron function, if it has one.
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local result, err = pcall(function() v.cron(self, config) end)
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if not result then
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utilities.handle_exception(self, err, 'CRON: ' .. i, config)
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end
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end
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end
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end
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-- Save the "database" every hour.
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if self.last_database_save ~= os.date('%H') then
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self.last_database_save = os.date('%H')
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utilities.save_data(self.database_name, self.database)
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end
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end
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-- Save the database before exiting.
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utilities.save_data(self.database_name, self.database)
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print('Halted.')
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end
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return bot
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