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Mikubot-2/otouto/bot.lua

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local bot = {}
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-- Requires are moved to init to allow for reloads.
local bindings -- Load Telegram bindings.
local utilities -- Load miscellaneous and cross-plugin functions.
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bot.version = '3.11'
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function bot:init(config) -- The function run when the bot is started or reloaded.
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bindings = require('otouto.bindings')
utilities = require('otouto.utilities')
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assert(
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config.bot_api_key and config.bot_api_key ~= '',
'You did not set your bot token in the config!'
)
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self.BASE_URL = 'https://api.telegram.org/bot' .. config.bot_api_key .. '/'
-- Fetch bot information. Try until it succeeds.
repeat
print('Fetching bot information...')
self.info = bindings.getMe(self)
until self.info
self.info = self.info.result
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-- Load the "database"! ;)
if not self.database then
self.database = utilities.load_data(self.info.username..'.db')
end
-- MIGRATION CODE 3.10 -> 3.11
if self.database.users and self.database.version ~= '3.11' then
self.database.userdata = {}
for id, user in pairs(self.database.users) do
self.database.userdata[id] = {}
self.database.userdata[id].nickname = user.nickname
self.database.userdata[id].lastfm = user.lastfm
user.nickname = nil
user.lastfm = nil
user.id_str = nil
user.name = nil
end
end
-- END MIGRATION CODE
-- Table to cache user info (usernames, IDs, etc).
self.database.users = self.database.users or {}
-- Table to store userdata (nicknames, lastfm usernames, etc).
self.database.userdata = self.database.userdata or {}
-- Save the bot's version in the database to make migration simpler.
self.database.version = bot.version
-- Add updated bot info to the user info cache.
self.database.users[tostring(self.info.id)] = self.info
self.plugins = {} -- Load plugins.
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for _,v in ipairs(config.plugins) do
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local p = require('otouto.plugins.'..v)
table.insert(self.plugins, p)
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if p.init then p.init(self, config) end
end
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print('@' .. self.info.username .. ', AKA ' .. self.info.first_name ..' ('..self.info.id..')')
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self.last_update = self.last_update or 0 -- Set loop variables: Update offset,
self.last_cron = self.last_cron or os.date('%M') -- the time of the last cron job,
self.last_database_save = self.last_database_save or os.date('%H') -- the time of the last database save,
self.is_started = true -- and whether or not the bot should be running.
end
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function bot:on_msg_receive(msg, config) -- The fn run whenever a message is received.
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if msg.date < os.time() - 5 then return end -- Do not process old messages.
-- Cache user info for those involved.
self.database.users[tostring(msg.from.id)] = msg.from
if msg.reply_to_message then
self.database.users[tostring(msg.reply_to_message.from.id)] = msg.reply_to_message.from
elseif msg.forward_from then
self.database.users[tostring(msg.forward_from.id)] = msg.forward_from
elseif msg.new_chat_member then
self.database.users[tostring(msg.new_chat_member.id)] = msg.new_chat_member
elseif msg.left_chat_member then
self.database.users[tostring(msg.left_chat_member.id)] = msg.left_chat_member
end
msg.text = msg.text or msg.caption or ''
msg.text_lower = msg.text:lower()
if msg.reply_to_message then
msg.reply_to_message.text = msg.reply_to_message.text or msg.reply_to_message.caption or ''
end
-- Support deep linking.
if msg.text:match('^'..config.cmd_pat..'start .+') then
msg.text = config.cmd_pat .. utilities.input(msg.text)
msg.text_lower = msg.text:lower()
end
for _, plugin in ipairs(self.plugins) do
for _, trigger in ipairs(plugin.triggers or {}) do
if string.match(msg.text_lower, trigger) then
local success, result = pcall(function()
return plugin.action(self, msg, config)
end)
if not success then
-- If the plugin has an error message, send it. If it does
-- not, use the generic one specified in config. If it's set
-- to false, do nothing.
if plugin.error then
utilities.send_reply(self, msg, plugin.error)
elseif plugin.error == nil then
utilities.send_reply(self, msg, config.errors.generic)
end
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utilities.handle_exception(self, result, msg.from.id .. ': ' .. msg.text, config)
return
end
-- If the action returns a table, make that table the new msg.
if type(result) == 'table' then
msg = result
-- If the action returns true, continue.
elseif result ~= true then
return
end
end
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end
end
end
function bot:run(config)
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bot.init(self, config) -- Actually start the script.
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while self.is_started do -- Start a loop while the bot should be running.
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local res = bindings.getUpdates(self, { timeout=20, offset = self.last_update+1 } )
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if res then
for _,v in ipairs(res.result) do -- Go through every new message.
self.last_update = v.update_id
if v.message then
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bot.on_msg_receive(self, v.message, config)
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end
end
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else
print('Connection error while fetching updates.')
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end
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if self.last_cron ~= os.date('%M') then -- Run cron jobs every minute.
self.last_cron = os.date('%M')
for i,v in ipairs(self.plugins) do
if v.cron then -- Call each plugin's cron function, if it has one.
local result, err = pcall(function() v.cron(self, config) end)
if not result then
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utilities.handle_exception(self, err, 'CRON: ' .. i, config)
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end
end
end
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end
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if self.last_database_save ~= os.date('%H') then
utilities.save_data(self.info.username..'.db', self.database) -- Save the database.
self.last_database_save = os.date('%H')
end
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end
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-- Save the database before exiting.
utilities.save_data(self.info.username..'.db', self.database)
print('Halted.')
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end
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return bot