package com.mrkayjaydee.playhours.events;

import com.mrkayjaydee.playhours.PlayHoursMod;
import com.mrkayjaydee.playhours.config.GeneralConfig;
import com.mrkayjaydee.playhours.config.MOTDConfig;
import com.mrkayjaydee.playhours.core.ScheduleService;
import net.minecraft.network.chat.Component;
import net.minecraft.server.MinecraftServer;
import net.minecraftforge.event.TickEvent;
import net.minecraftforge.eventbus.api.SubscribeEvent;
import net.minecraftforge.fml.common.Mod;

import java.time.ZonedDateTime;

/**
 * Handles server MOTD (Message of the Day) customization.
 * Orchestrates periodic MOTD updates based on current schedule state.
 */
@Mod.EventBusSubscriber(modid = PlayHoursMod.MODID)
public final class MOTDHandler {

    private static long lastMOTDUpdate = 0;

    private MOTDHandler() {}

    /**
     * Handles server tick to periodically update MOTD with schedule information.
     * 
     * @param event the server tick event
     */
    @SubscribeEvent
    public static void onServerTick(TickEvent.ServerTickEvent event) {
        if (event.phase != TickEvent.Phase.END) return;
        if (event.getServer() == null) return;

        try {
            // Check if MOTD feature is enabled
            if (!GeneralConfig.MOTD_ENABLED.get()) {
                return;
            }

            // Only update periodically based on configured delay
            long currentTime = System.currentTimeMillis();
            long updateIntervalMillis = MOTDConfig.UPDATE_DELAY_SECONDS.get() * 1000L;
            if (currentTime - lastMOTDUpdate < updateIntervalMillis) {
                return;
            }
            lastMOTDUpdate = currentTime;

            MinecraftServer server = event.getServer();

            // Get current schedule information
            ScheduleService scheduleService = ScheduleService.get();
            ZonedDateTime now = ZonedDateTime.now(scheduleService.getZoneId());
            
            // Build MOTD component
            Component motd = MOTDBuilder.build(scheduleService, now);
            
            // Validate and truncate to Minecraft limits (2 lines, 59 chars per line)
            Component validatedMotd = MOTDValidator.validateAndTruncate(motd);
            
            // Apply MOTD to server
            server.setMotd(validatedMotd.getString());
            
        } catch (Exception e) {
            PlayHoursMod.LOGGER.error("Error updating MOTD", e);
        }
    }
}