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Mikubot-2/otouto/plugins/remind.lua

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local remind = {}
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local utilities = require('otouto.utilities')
remind.command = 'remind <Länge> <Nachricht>'
function remind:init(config)
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self.database.reminders = self.database.reminders or {}
remind.triggers = utilities.triggers(self.info.username, config.cmd_pat):t('remind', true).table
remind.doc = [[*
]]..config.cmd_pat..[[remind* _<Länge>_ _<Nachricht>_: Erinnert dich in X Minuten an die Nachricht]]
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end
function remind:action(msg)
-- Ensure there are arguments. If not, send doc.
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local input = utilities.input(msg.text)
if not input then
utilities.send_message(self, msg.chat.id, remind.doc, true, msg.message_id, true)
return
end
-- Ensure first arg is a number. If not, send doc.
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local duration = utilities.get_word(input, 1)
if not tonumber(duration) then
utilities.send_message(self, msg.chat.id, remind.doc, true, msg.message_id, true)
return
end
-- Duration must be between one minute and one year (approximately).
duration = tonumber(duration)
if duration < 1 then
duration = 1
elseif duration > 526000 then
duration = 526000
end
-- Ensure there is a second arg.
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local message = utilities.input(input)
if not message then
utilities.send_message(self, msg.chat.id, remind.doc, true, msg.message_id, true)
return
end
-- Make a database entry for the group/user if one does not exist.
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self.database.reminders[msg.chat.id_str] = self.database.reminders[msg.chat.id_str] or {}
-- Limit group reminders to 10 and private reminders to 50.
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if msg.chat.type ~= 'private' and utilities.table_size(self.database.reminders[msg.chat.id_str]) > 9 then
utilities.send_reply(self, msg, 'Diese Gruppe hat schon zehn Erinnerungen!')
return
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elseif msg.chat.type == 'private' and utilities.table_size(self.database.reminders[msg.chat.id_str]) > 49 then
utilities.send_reply(msg, 'Du hast schon 50 Erinnerungen!')
return
end
-- Put together the reminder with the expiration, message, and message to reply to.
local reminder = {
time = os.time() + duration * 60,
message = message
}
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table.insert(self.database.reminders[msg.chat.id_str], reminder)
local output = 'Ich werde dich in ' .. duration
if duration == 1 then
output = output .. ' Minute erinnern!'
else
output = output .. ' Minuten erinnern!'
end
utilities.send_reply(self, msg, output)
end
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function remind:cron()
local time = os.time()
-- Iterate over the group entries in the reminders database.
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for chat_id, group in pairs(self.database.reminders) do
local new_group = {}
-- Iterate over each reminder.
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for _, reminder in ipairs(group) do
-- If the reminder is past-due, send it and nullify it.
-- Otherwise, add it to the replacement table.
if time > reminder.time then
local output = '*ERINNERUNG:*\n"' .. utilities.md_escape(reminder.message) .. '"'
local res = utilities.send_message(self, chat_id, output, true, nil, true)
-- If the message fails to send, save it for later.
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if not res then
table.insert(new_group, reminder)
end
else
table.insert(new_group, reminder)
end
end
-- Nullify the original table and replace it with the new one.
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self.database.reminders[chat_id] = new_group
-- Nullify the table if it is empty.
if #new_group == 0 then
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self.database.reminders[chat_id] = nil
end
end
end
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return remind