import { ChatInputCommandInteraction } from "discord.js";
import { cfg } from "../../systems/config";
import { resolveUser, hasOfficerRole } from "../../systems/users";
import { getCurrentWeek, getWeekKey, getBringer } from "../../systems/wrank";
import { replyAndDelete } from "../../utils";

export async function handleRankGet(interaction: ChatInputCommandInteraction): Promise<void> {
  const member    = await interaction.guild!.members.fetch(interaction.user.id);
  const isOfficer = hasOfficerRole(member, cfg("officerRoles"));
  const nameArg   = interaction.options.getString("name");

  if (nameArg && !isOfficer) {
    return void replyAndDelete(interaction, "❌ Only officers can view other players' ranks.");
  }

  let usermapKey: string | null;
  if (nameArg) {
    usermapKey = nameArg;
  } else {
    const user = await resolveUser(member);
    usermapKey = user.usermapKey;
  }

  if (!usermapKey) return void replyAndDelete(interaction, "❌ You are not registered in the system.");

  const week = getCurrentWeek();
  const goal = cfg("wRankGoal");
  const weekKey = getWeekKey();

  for (const nation of ["capella", "procyon"] as const) {
    const entry = week.entries[nation].find((e) => e.usermapKey === usermapKey);
    if (!entry) continue;

    const isDone   = entry.tgCount >= goal;
    const delta    = entry.previousRank !== undefined ? entry.currentRank - entry.previousRank : 0;
    const deltaStr = delta < 0 ? ` (↑${Math.abs(delta)})` : delta > 0 ? ` (↓${delta})` : "";
    const bringer  = getBringer(entry.nation);
    const isBringer = bringer === usermapKey && isDone;

    const lines = [
      `**${entry.characterName}** · ${entry.nation}`,
      `**W.Rank:** ${entry.currentRank}${deltaStr}${isBringer ? ` · ${entry.nation === "Capella" ? "Luminous Bringer" : "Storm Bringer"}` : ""}`,
      `**Points:** ${entry.weeklyPoints}`,
      `**TGs done:** ${entry.tgCount}/${goal}${isDone ? " ✅" : ""}`,
      `**Week:** ${weekKey}`,
    ].join("\n");

    return void replyAndDelete(interaction, lines);
  }

  return void replyAndDelete(interaction, `❌ No rank found for **${usermapKey}** this week.`);
}