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I am not a native English speaker, I’m using Google Translate to help me to write post and update logs, if you can’t understand what I want to say, I’m sorry.

What is LiteSignIn ?
This is a plug-in for recording player check-in data, and rewards players for check-in. The content of the reward can be completely customized, it can trigger commands, message prompts, item rewards, etc. when signing in. It supports GUI mode, just like a calendar, it is very simple to use.

Current Features:

• Remind to sign in after joining the game
• Sign in using command
• Have a GUI like a calendar
• Support viewing history sign-in records
• Multi-language support
• Sign in reward function
• Sign in reward task sequence
• Support multiple reward modes such as rewards for continuous check-in, total rewards for check-in, rewards for check-in on a specified date, etc.
• Sign in leaderboard.
• Sign-in reminder at join (or automatic sign-in)
• Give sign-in rewards directly (use /signin reward)
• Support PlaceholderAPI
• Support MySQL storage
• Support SQLite storage
• Support the use of retroactive cards for re sign-in
• Support multiple permission groups, users in different groups will enjoy different rewards
• Support sign-in ranking function
• Database backup
• Database rollback(Need to use with backup function)
• All permission nodes, Messages, and GUI settings can be customized (But you have to remember that this is not a custom menu plugin)
• Wooden sign scripts
• Folia support
• And more...

Commands:

• /signin help View command help.
• /signin reload Reload configuration files.
• /signin gui [month] Open the Sign In GUI menu.
• /signin click [Date or playerName] [playerName] Sign in now, or sign in for historical date.
• /signin save Save data for all online players.
• /signin leaderboard [Date] [Page] View the sign-in leaderboard for today or a specified date.
• /signin database [backup/rollback/confirm] Database managements
• /signin info [playerName] View player's information.
• /signin itemcollection Collection of management items.
• /signin reward directly give the player a sign-in reward.

PlaceholderAPI's placeholders:
%litesignin_signed-in% Did you sign in today?
%litesignin_group% Return the player's group.
%litesignin_cards_amount% Return number of retroactive cards.
%litesignin_statistics% Return the cumulative numbers of user sign in.
%litesignin_continuous% Return the number of continuous sign in.
%litesignin_statistics_of_month% Return the cumulative numbers of user sign in of this month.
%litesignin_statistics_of_month_[year]_[month]% Return the cumulative numbers of user sign in of designated month.
%litesignin_continuous_of_month% Return the number of continuous sign in of this month.
%litesignin_last_year% Returns the year of the latest sign-in.
%litesignin_last_month% Returns the month of the latest sign-in.
%litesignin_last_day% Returns the day of the latest sign-in.
%litesignin_last_hour% Returns the hour of the latest sign-in.
%litesignin_last_minute% Returns the minute of the latest sign-in.
%litesignin_last_second% Returns the second of the latest sign-in.

Another placeholders:
%litesignin_random_[minimum]_[maximum]% Returns a random value within a specified range of numbers. (This is a placeholder for a gadget type.)



Ending:
If you have good suggestions for this plugin, you can add my discord contact https://discord.gg/2PPYzpdGGq) If you like this plugin, please give the best five stars. Your support is my motivation for updating.

My Updating Plugins:
LiteAnnouncer: https://www.spigotmc.org/resources/84664/
LiteCommandEditor: https://www.spigotmc.org/resources/117987/
GlobalMarketPlus: https://www.spigotmc.org/resources/103648/