/**
 * BaseLayout — shared poll layout functions.
 * All layouts inherit these via BaseLayout.methods() spread.
 * Override only what differs in each layout.
 */

 import { EmbedBuilder } from "discord.js";
 import { VoteEntry, Nation, PollState } from "@types";
 import { Config } from "@systems/config";
 import { WRank, WRankEntry } from "@systems/wrank";
 import { Bringer } from "@systems/bringer";
 import { Leaves } from "@systems/leaves";
 import { Emoji } from "@systems/emojis";
 import { TGKey } from "@systems/tg-key";
 import { format } from "@format";
 import { PollLayout, PollRowContext, PollEmbedOptions } from "@ui/types";
 
 // ─── W.Rank formatting ────────────────────────────────────────────────────────
 
 export function formatWRank(wRankEntry: WRankEntry | null, context: PollRowContext): string {
    const tgGoal = Config.get({ section: "wrank", key: "goal" });
    return format.wrank.row(wRankEntry, tgGoal, context);
 }
 
 // ─── Row formatting ───────────────────────────────────────────────────────────
 
 export function formatRow(entry: VoteEntry, context: PollRowContext): string {
   const cfgFormat = Config.get({ section: "poll", key: "charDisplayFormat" });
   const nation    = entry.characterNation;
 
   const wRankEntry = entry.characterName && entry.characterNation
     ? WRank.entry(entry.characterName, entry.characterNation)
     : null;
 
   const wrank    = formatWRank(wRankEntry, context);
   const classStr = entry.characterClass
     ? (Emoji.class(entry.characterClass) || entry.characterClass)
     : "";
   const levelStr = entry.characterLevel ? `${entry.characterLevel}` : "";
 
   let row = cfgFormat
     .replace("{wrank}", wrank)
     .replace("{class}",  classStr)
     .replace("{level}",  levelStr)
     .replace("{name}",   entry.characterName ?? entry.displayName ?? "")
     .replace(/\s+/g, " ")
     .trim();
 
   // Bringer indicator
   if (nation && entry.userKey) {
     const bringer = Bringer.get({ nation });
     if (bringer && bringer === entry.characterName) {
       row += ` · ${format.bringer(nation)}`;
     }
   }
 
   // Shared character indicator
   if (entry.borrowedFrom) row += ` ${Emoji.get("borrowed") || "🔗"}`;
 
   // Nation emoji prefix
   if (context.showNationEmoji && nation) row = `${Emoji.nation(nation)} ${row}`;
 
   // Cockroach indicator
   if (entry.characterName && context.historyKey) {
     if (Leaves.hasLeft({ characterName: entry.characterName, historyKey: context.historyKey })) {
       row += ` ${Leaves.formatIndicator({ characterName: entry.characterName })}`;
     }
   }
 
   return row;
 }
 
 // ─── Context building ─────────────────────────────────────────────────────────
 
 export function buildContext(
   entries: VoteEntry[],
   nation: Nation,
   options?: { showNationEmoji?: boolean; historyKey?: TGKey }
 ): PollRowContext {
   const nationHasRank = entries.some((e) => {
     if (!e.characterName) return false;
     const wr = WRank.entry(e.characterName, nation);
     return wr !== null && wr.currentRank !== 0;
   });
 
   const nationHasDelta = entries.some((e) => {
     if (!e.characterName) return false;
     const wr = WRank.entry(e.characterName, nation);
     return wr?.previousRank !== undefined;
   });
 
   return {
     nationHasRank,
     nationHasDelta,
     showNationEmoji: options?.showNationEmoji ?? false,
     historyKey:      options?.historyKey,
   };
 }
 
 // ─── Shared embed helpers ─────────────────────────────────────────────────────
 
 export function formatNationField(
   nation: Nation,
   yesEntries: VoteEntry[],
   noVoters: VoteEntry[],
   showNoInline: boolean,
   historyKey?: TGKey
 ): string {
   const context   = buildContext(yesEntries, nation, { historyKey });
   const noEntries = showNoInline
     ? noVoters.filter((e) => e.characterNation === nation)
     : [];
   const lines = [
     ...yesEntries.map((e) => formatRow(e, context)),
     ...noEntries.map((e) => `❌ ${formatRow(e, context)}`),
   ];
   return lines.length > 0 ? lines.join("\n") : "—";
 }
 
 export function formatMessages(
   allMessages: { entry: VoteEntry; voteType: "yes" | "no" }[]
 ): string {
   if (allMessages.length === 0) return "";
   return allMessages
     .map((m) => {
       const name   = m.entry.characterName ?? m.entry.displayName;
       const prefix = m.voteType === "no" ? "✗ " : "✓ ";
       const msg    = m.entry.publicMessage ? ` — ${m.entry.publicMessage}` : "";
       return `${prefix}${name} · ${m.entry.votedAt}${msg}`;
     })
     .join("\n");
 }
 
export function resolveColor(state: PollState): number {
  if (state.confirmed === "yes") return 0x57f287; // green
  if (state.confirmed === "no")  return 0xed4245; // red
  if ((state as any).called)     return 0xe8a317; // orange
  if (state.locked)              return 0x888888; // grey
  return 0xe8a317;                                // orange (open)
}
 

 export function resolveTitle(state: PollState, yesByNation: Record<Nation, VoteEntry[]>): string {
   const capellaEmoji = Emoji.get("capella");
   const procyonEmoji = Emoji.get("procyon");
   const counts = !state.locked && state.confirmed === null
     ? `  ${capellaEmoji} ${yesByNation[Nation.Capella].length}  ${procyonEmoji} ${yesByNation[Nation.Procyon].length}`
     : "";
   const statusSuffix =
     state.locked              ? " 🔒" :
     state.confirmed === "yes" ? " ✅" :
     state.confirmed === "no"  ? " ❌" : 
    (state as any).called     ? " 🔔" : "";

   return `⚔️ TG — ${state.slot}:00${counts}${statusSuffix}`;
 }
 
 export function resolveFooter(state: PollState, noCount: number, overrideLockMsg?: string): string {
   if (state.confirmed === "yes") return Config.get({ section: "poll", key: "confirmYes" });
   if (state.confirmed === "no")  return Config.get({ section: "poll", key: "confirmNo" });
   if ((state as any).called)     return Config.get({ section: "poll", key: "calledMessage" }) ?? "🔔 TG was called.";
   if (state.locked)              return overrideLockMsg ?? Config.get({ section: "poll", key: "lockMessage" });
   return `❌ ${noCount} • Vote updates live • Anyone can vote • /tg switch to change character`;
 }

 export function buildYesByNation(state: PollState): {
   yesByNation: Record<Nation, VoteEntry[]>;
   noVoters:    VoteEntry[];
   allMessages: { entry: VoteEntry; voteType: "yes" | "no" }[];
 } {
   const yesByNation: Record<Nation, VoteEntry[]> = {
     [Nation.Capella]: [],
     [Nation.Procyon]: [],
   };
   const noVoters:    VoteEntry[] = [];
   const allMessages: { entry: VoteEntry; voteType: "yes" | "no" }[] = [];
 
   for (const entry of state.yes.values()) {
     const nation: Nation = (entry.characterNation as Nation) ?? Nation.Capella;
     yesByNation[nation].push(entry);
     allMessages.push({ entry, voteType: "yes" });
   }
   for (const entry of state.no.values()) {
     noVoters.push(entry);
     allMessages.push({ entry, voteType: "no" });
   }
 
   return { yesByNation, noVoters, allMessages };
 }
 
 // ─── buildEmbed factory ───────────────────────────────────────────────────────
 
 export function createBuildEmbed({ inline, maxInlinePlayers = 5 }: {
   inline:             boolean;
   maxInlinePlayers?:  number;
 }) {
   return function buildEmbed(state: PollState, options?: PollEmbedOptions): EmbedBuilder {
     const { yesByNation, noVoters, allMessages } = buildYesByNation(state);
     const showNoInline = Config.get({ section: "poll", key: "showNoInNationField" });
     const historyKey = options?.historyKey
        ?? TGKey.current({ slot: state.slot });
 
     const capellaEmoji = Emoji.get("capella");
     const procyonEmoji = Emoji.get("procyon");
 
     // Auto-stack to vertical if too many players
     const maxPlayers = Math.max(
       yesByNation[Nation.Capella].length,
       yesByNation[Nation.Procyon].length
     );
     const useInline = inline && maxPlayers <= maxInlinePlayers;
 
     const embed = new EmbedBuilder()
       .setTitle(resolveTitle(state, yesByNation))
       .setColor(resolveColor(state))
       .setTimestamp();

      const imageUrl = (state as any).called
      ? Config.get({ section: "poll", key: "calledGameImageUrl" })
      : state.confirmed === "no"
        ? Config.get({ section: "poll", key: "cancelledImageUrl" })
        : null;
      
      if (imageUrl) embed.setImage(imageUrl);
 
     if (useInline) {
       // Side-by-side — no spacer needed
       embed.addFields(
         {
           name:   `${capellaEmoji} Capella (${yesByNation[Nation.Capella].length})`,
           value:  formatNationField(Nation.Capella, yesByNation[Nation.Capella], noVoters, showNoInline, historyKey),
           inline: true,
         },
         {
           name:   `${procyonEmoji} Procyon (${yesByNation[Nation.Procyon].length})`,
           value:  formatNationField(Nation.Procyon, yesByNation[Nation.Procyon], noVoters, showNoInline, historyKey),
           inline: true,
         },
       );
     } else {
       // Vertical — spacer between nations
       embed.addFields(
         {
           name:   `${capellaEmoji} Capella (${yesByNation[Nation.Capella].length})`,
           value:  formatNationField(Nation.Capella, yesByNation[Nation.Capella], noVoters, showNoInline, historyKey),
           inline: false,
         },
         { name: "\u200b", value: "\u200b", inline: false },
         {
           name:   `${procyonEmoji} Procyon (${yesByNation[Nation.Procyon].length})`,
           value:  formatNationField(Nation.Procyon, yesByNation[Nation.Procyon], noVoters, showNoInline, historyKey),
           inline: false,
         },
       );
     }
 
     const msgSection = formatMessages(allMessages);
     if (msgSection) embed.addFields({ name: "\u200b", value: msgSection, inline: false });
 
     embed.setFooter({ text: resolveFooter(state, noVoters.length, options?.overrideLockMsg) });
     return embed;
   };
 }
 
 // ─── BaseLayout factory ───────────────────────────────────────────────────────
 
 export const BaseLayout = {
   methods() {
     return { formatRow, buildContext };
   },
 };