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path: root/src/command/revise.rs
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use std::sync::Arc;

use time::format_description;
use twilight_model::{
	application::interaction::application_command::CommandData,
	gateway::payload::incoming::InteractionCreate,
	http::interaction::InteractionResponseData,
	id::{Id, marker::GuildMarker},
};
use twilight_util::builder::{InteractionResponseDataBuilder, embed::EmbedBuilder};

use crate::{
	brain::Brain,
	command::{check_command_permissions, parse_points_command_data},
	database::{BoardRow, Error as DbError},
};

pub async fn revise(
	brain: Arc<Brain>,
	guild: Id<GuildMarker>,
	create: &InteractionCreate,
	data: &CommandData,
) -> InteractionResponseData {
	let (point_data, date) = match parse_points_command_data(data) {
		Err(e) => return e,
		Ok(pcd) => match pcd.date {
			Err(e) => return e,
			Ok(date) => (pcd, date),
		},
	};

	brain.create_leaderboard_if_not_exists(guild);
	if let Some(err) = check_command_permissions(&brain, guild, create.member.clone().unwrap()) {
		return err;
	}

	for user in &point_data.users {
		match brain
			.db
			.give_user_points(guild.get(), user.get(), point_data.points)
		{
			Err(DbError::UserNotExist) => {
				let member = brain.guild_member(guild, *user).await;
				let row = BoardRow {
					user_id: user.get(),
					user_handle: member.handle,
					user_nickname: member.nick.or(member.global_name),
					points: point_data.points,
				};
				brain.db.add_user_to_leaderboard(guild.get(), row).unwrap();
			}
			_ => (),
		}

		//FIXME: gen 2025-08-14: do not assume UTC!
		brain
			.db
			.revise_last_history_date(
				guild.get(),
				user.get(),
				point_data.points,
				date.assume_utc(),
			)
			.unwrap();
	}

	let datetime_fmt =
		format_description::parse("[year]-[month]-[day] [hour]:[minute]:[second]").unwrap();

	let points_verb = point_data.points_verb;
	let users_string = point_data.user_string();

	let msg = format!(
		"{} points {points_verb} {users_string} on date {}",
		point_data.points.abs(),
		date.format(&datetime_fmt).unwrap()
	);
	let embed = EmbedBuilder::new().description(msg).build();
	InteractionResponseDataBuilder::new()
		.embeds([embed])
		.build()
}