/**
 * Sequential-extra-stats leaderboard layout — based directly on the
 * working "sequential" layout (full name/score/K-D/TG-count alignment
 * via TextAlign), with an additional indented second line showing
 * weekly atk/def/heal stats when present.
 */

 import { EmbedBuilder } from "discord.js";
 import { Nation, ClassKey } from "@types";
 import { WRankWeek } from "@systems/wrank";
 import { Emoji } from "@systems/emojis";
 import { Config } from "@systems/config";
 import { format } from "@format";
 import { Layout, NationContext } from "@ui/layout";
 import { EmbedHelpers } from "@ui/embed-helpers";
 import { TextAlign } from "@ui/text-align";
 import { Logger } from "@systems/logger";
 import { LeaderboardLayout, LeaderboardRow } from "../index";
 
 const log = Logger.for("sequential-extra-stats");
 
 const TEMPLATE = "{rank} {class} {name}{indicators} {score} {kd} {tgs}";
 
 // Adjustable extra spacing between columns — tune these to close any
 // residual sub-filler drift between primary row and secondary stats line.
 const KD_GAP  = 4;
 const TGS_GAP = 0;
 const HEAL_GAP = TGS_GAP + 5; // separate from TGS_GAP since heal lacks the [ ] brackets tgCount has
 
 function formatRankOnly(currentRank: number, goalMet: boolean): string {
   if (!currentRank || currentRank === 0) return "—";
   const suffix = goalMet ? "_gold" : "";
   return Emoji.get(`wrank_${currentRank}${suffix}`) || `${currentRank}`;
 }
 
 function formatRow(
   row: LeaderboardRow,
   context: NationContext,
   allNameBlocks: string[],
   allScores: string[],
   allKds: string[],
   allTgs: string[],
   allAtks: string[],
   allDefs: string[],
   allHeals: string[],
   week: WRankWeek
 ): string {
   const char     = row.character;
   const goal     = Config.get({ section: "wrank", key: "goal" });
   const classKey = (typeof char.class === "object" ? char.class?.key : char.class) as ClassKey;
   const goalMet  = row.tgCount >= goal;
   const scoreEmoji = Emoji.get("score") || "📊";
 
   const scoreText = format.scoreBold(row.weeklyPts);
   const kdText    = (row.totalKills || row.totalDeaths) ? format.kd(row.totalKills, row.totalDeaths) : "—";
   const tgText    = `[${Layout.tgCount(row.tgCount, goal)}]`;
 
   // Each column's target width = widest of (primary stat, secondary stat
   // that will appear below it) — so the primary row makes room for the
   // secondary stats line beneath it, keeping both column-locked together.
   const scoreColumn = [...allScores, ...allAtks];
   const kdColumn     = [...allKds, ...allDefs];
   const tgsColumn     = [...allTgs, ...allHeals];
 
   const bringerTag   = Layout.bringer(char as any, week);
   const nameBlock    = bringerTag ? `${char.name}${TextAlign.gap(1)}${bringerTag}` : char.name;
   const paddedBlock  = TextAlign.padToMax(nameBlock, allNameBlocks);
   const cockroach    = Layout.cockroach(char as any);
   
   const tokens: Record<string, string> = {
     rank:       row.position ? formatRankOnly(row.position.currentRank, goalMet) : "—",
     class:      Emoji.class(classKey) || classKey || "?",
     name:       paddedBlock,
     indicators: cockroach,
     score:      `${scoreEmoji} ${TextAlign.padToMax(scoreText, scoreColumn)}`,
     kd:         TextAlign.gap(KD_GAP) + TextAlign.padToMax(kdText, kdColumn),
     tgs:        TextAlign.gap(TGS_GAP) + TextAlign.padLeftToMax(tgText, tgsColumn),
   };
 
   const mainLine = Layout.formatRow(TEMPLATE, tokens);
 
   if (!row.stats || (!row.stats.atk && !row.stats.def && !row.stats.heal)) return mainLine;
 
   const prefixText = `${tokens.rank} ${tokens.class} ${tokens.name}${tokens.indicators}`;
   const prefixGap  = TextAlign.padLeft("", TextAlign.estimateWidth(prefixText));
   const atkText  = format.statText("anima_atk",  row.stats.atk,  "⚔️");
   const defText  = format.statText("anima_def",  row.stats.def,  "🛡️");
   const healText = format.statText("circle_massheal_purple", row.stats.heal, "💚");
 
   const statsLine = `${prefixGap} ${TextAlign.gap(4)}${TextAlign.padToMax(atkText, scoreColumn)} ${TextAlign.gap(KD_GAP)}${TextAlign.padToMax(defText, kdColumn)} ${TextAlign.gap(HEAL_GAP)}${TextAlign.padLeftToMax(healText, tgsColumn)}`;
 
   return `${mainLine}\n${statsLine}`;
 }
 
 function buildEmbed(week: WRankWeek, rows: LeaderboardRow[]): EmbedBuilder {
   const capellaRows = rows.filter((r) => r.character.nation === Nation.Capella);
   const procyonRows = rows.filter((r) => r.character.nation === Nation.Procyon);
   const capContext  = Layout.nationContext(capellaRows);
   const proContext  = Layout.nationContext(procyonRows);
   const sortByPts   = (a: LeaderboardRow, b: LeaderboardRow) => b.weeklyPts - a.weeklyPts;
 
   const sortedCapella = [...capellaRows].sort(sortByPts);
   const sortedProcyon = [...procyonRows].sort(sortByPts);
 
   const capellaNameBlocks = sortedCapella.map((r) => {
    const tag = Layout.bringer(r.character as any, week);
    return tag ? `${r.character.name}${TextAlign.gap(1)}${tag}` : r.character.name;
  });
  const procyonNameBlocks = sortedProcyon.map((r) => {
    const tag = Layout.bringer(r.character as any, week);
    return tag ? `${r.character.name}${TextAlign.gap(1)}${tag}` : r.character.name;
  });
   const capellaScores = sortedCapella.map((r) => format.scoreBold(r.weeklyPts));
   const procyonScores = sortedProcyon.map((r) => format.scoreBold(r.weeklyPts));
   const capellaKds    = sortedCapella.map((r) => (r.totalKills || r.totalDeaths) ? format.kd(r.totalKills, r.totalDeaths) : "—");
   const procyonKds    = sortedProcyon.map((r) => (r.totalKills || r.totalDeaths) ? format.kd(r.totalKills, r.totalDeaths) : "—");
   const goal          = Config.get({ section: "wrank", key: "goal" });
   const capellaTgs    = sortedCapella.map((r) => `[${Layout.tgCount(r.tgCount, goal)}]`);
   const procyonTgs    = sortedProcyon.map((r) => `[${Layout.tgCount(r.tgCount, goal)}]`);
 
   const atkEmoji  = Emoji.get("atk")  || "⚔️";
   const defEmoji  = Emoji.get("def")  || "🛡️";
   const healEmoji = Emoji.get("heal") || "💚";
   const capellaAtks  = sortedCapella.map((r) => r.stats?.atk  ? `${atkEmoji} ${format.number.abbrev(r.stats.atk)}`   : "");
   const procyonAtks  = sortedProcyon.map((r) => r.stats?.atk  ? `${atkEmoji} ${format.number.abbrev(r.stats.atk)}`   : "");
   const capellaDefs  = sortedCapella.map((r) => r.stats?.def  ? `${defEmoji} ${format.number.abbrev(r.stats.def)}`   : "");
   const procyonDefs  = sortedProcyon.map((r) => r.stats?.def  ? `${defEmoji} ${format.number.abbrev(r.stats.def)}`   : "");
   const capellaHeals = sortedCapella.map((r) => r.stats?.heal ? `${healEmoji} ${format.number.abbrev(r.stats.heal)}` : "");
   const procyonHeals = sortedProcyon.map((r) => r.stats?.heal ? `${healEmoji} ${format.number.abbrev(r.stats.heal)}` : "");
 
   const capellaEmoji = Emoji.get("capella");
   const procyonEmoji = Emoji.get("procyon");
 
   const capellaFormatted = sortedCapella.map((r) => formatRow(r, capContext, capellaNameBlocks, capellaScores, capellaKds, capellaTgs, capellaAtks, capellaDefs, capellaHeals, week));
   const procyonFormatted = sortedProcyon.map((r) => formatRow(r, proContext, procyonNameBlocks, procyonScores, procyonKds, procyonTgs, procyonAtks, procyonDefs, procyonHeals, week));
 
   const embed = new EmbedBuilder()
     .setTitle(`🏆 Weekly Leaderboard — ${week.weekKey}`)
     .setColor(0xe8a317)
     .setFooter({ text: `Weekly Leaderboard · ${week.weekKey} · Updated ${format.date(new Date(), "dd/MM/YYYY HH:mm")}` })
     .setTimestamp();
 
   EmbedHelpers.addPerPlayerColumn(embed, `${capellaEmoji} Capella`, capellaFormatted);
   embed.addFields({ name: "\u200b", value: "\u200b", inline: false });
   EmbedHelpers.addPerPlayerColumn(embed, `${procyonEmoji} Procyon`, procyonFormatted);
 
   return embed;
 }
 
 export const sequentialExtraStatsLeaderboardLayout: LeaderboardLayout = {
   name:        "sequential-extra-stats",
   description: "Same as sequential, plus weekly atk/def/heal on indented second line",
   buildEmbed,
   formatRow: formatRow as any,
 };