// Claude's seat at the table: a one-shot websocket client. Each run
// connects, resumes the seat by token, performs one verb, prints, exits.
//   node claude-seat.mjs join <ROOM> <NAME>
//   node claude-seat.mjs view
//   node claude-seat.mjs do '<command json>'
//   node claude-seat.mjs chat "text"
import WebSocket from "ws";
import { readFileSync, writeFileSync, existsSync } from "node:fs";

// Seat state (room, name, token) persists between one-shot invocations.
const SEAT_FILE = process.env.WIZWAR_SEAT ?? "/tmp/wizwar-claude-seat.json";
const URL_WS = process.env.WIZWAR_SERVER ?? "wss://wizwar.kestrelsnest.social/ws";
const [verb, ...args] = process.argv.slice(2);
const seat = existsSync(SEAT_FILE) ? JSON.parse(readFileSync(SEAT_FILE, "utf8")) : null;

const ws = new WebSocket(URL_WS);
const send = (m) => ws.send(JSON.stringify(m));
const die = (msg, code = 1) => { console.log(msg); process.exit(code); };
setTimeout(() => die("timeout: no answer from the maze"), 20000);

let view = null;
let pendingEvents = [];
let historyEvents = [];

function cellK(c) { return `${c.x},${c.y}`; }

function renderView(v) {
  const B = v.board;
  const lines = [];
  const label = new Map(); // cellKey -> 2-char code
  const codes = {};
  v.players.forEach((p, i) => {
    codes[p.id] = String(i + 1);
    label.set(cellK(p.position), (p.id === v.you ? "C" : "P") + (i + 1));
  });
  const treas = new Map();
  for (const t of v.treasures) if (t.position && !t.carriedBy) treas.set(cellK(t.position), t);
  // top border row by row
  for (let y = 0; y < B.height; y++) {
    let top = "";
    let mid = "";
    for (let x = 0; x < B.width; x++) {
      const k = `${x},${y}`;
      if (!B.cells[k]) { top += "     "; mid += "     "; continue; }
      const nEdge = y === 0 ? (B.edges[`H:${x},${y - 1}`] ?? "open") : (B.edges[`H:${x},${y - 1}`] ?? "open");
      const north = y === 0 ? "wall" : nEdge; // rim renders solid; warps noted separately
      top += "+" + (north === "wall" ? "————" : north === "door" ? "—DD—" : north === "firewall" ? "~FF~" : "    ");
      const wEdge = x === 0 ? "wall" : (B.edges[`V:${x - 1},${y}`] ?? "open");
      const wc = wEdge === "wall" ? "|" : wEdge === "door" ? "D" : wEdge === "firewall" ? "F" : " ";
      let body = label.get(k) ?? "";
      if (!body) {
        const sq = v.squareContents[k];
        if (sq) body = sq.kind.slice(0, 2).toUpperCase();
        else if (treas.has(k)) body = "$" + (treas.get(k).owner === v.you ? "c" : codes[treas.get(k).owner] ?? "?");
        else if (B.homes.some((h) => cellK(h) === k)) {
          const who = v.players.find((p) => cellK(p.home) === k);
          body = "h" + (who ? (who.id === v.you ? "C" : codes[who.id]) : "?");
        } else if ((v.groundObjects[k] ?? []).length) body = "ob";
        else if (v.creatures.some((c) => cellK(c.position) === k)) {
          body = v.creatures.find((c) => cellK(c.position) === k).kind.slice(0, 2);
        } else body = "  ";
      }
      mid += wc + " " + body.padEnd(2, " ") + " ";
    }
    lines.push(top + "+");
    lines.push(mid + "|");
  }
  let bottom = "";
  for (let x = 0; x < B.width; x++) bottom += "+————";
  lines.push(bottom + "+");
  const out = [];
  out.push(`ROOM ${seat?.roomId} — you are ${v.you}  (round ${v.turn.round}, ${v.activePlayerId}'s turn)`);
  out.push(lines.join("\n"));
  out.push("WARPS (rim passages): " + B.warps.map((w) => `${cellK(w.from.cell)}${w.from.side}→${cellK(w.to.cell)}`).join("  "));
  for (const p of v.players) {
    const t = p.carriedTreasureId ? " CARRYING TREASURE" : "";
    out.push(`  ${p.id === v.you ? "ME " : "   "}${p.id}: ${p.life} life @${cellK(p.position)} home@${cellK(p.home)} hand:${p.handCount}${t}${p.alive ? "" : " DEAD"} displayed:[${p.displayed.map((c) => c.cardId).join(",")}]`);
  }
  out.push("TREASURES: " + v.treasures.map((t) => `${t.id}(${t.owner})${t.carriedBy ? `held by ${t.carriedBy}` : t.position ? `@${cellK(t.position)}` : "?"}`).join("  "));
  if (v.sustained.length) out.push("SUSTAINED: " + v.sustained.map((s) => `${s.cardId} on ${s.targetId} (${s.remainingTurns})`).join("  "));
  const sq = Object.entries(v.squareContents);
  if (sq.length) out.push("CONTENTS: " + sq.map(([k, c]) => `${c.kind}@${k}`).join("  "));
  if (v.creatures.length) out.push("CREATURES: " + v.creatures.map((c) => `${c.kind}@${cellK(c.position)} (${c.controllerId}, ${c.life} life)`).join("  "));
  out.push(`TURN: moves ${v.turn.movementUsed}/${v.turn.movementAllowance} attackUsed:${v.turn.attackUsed} actionsEnded:${v.turn.actionsEnded} numberPlayed:${v.turn.numberPlayedForMovement}`);
  out.push("MY HAND: " + v.yourHand.map((c) => `${c.instanceId}`).join("  "));
  if (v.stack) out.push("STACK! " + JSON.stringify(v.stack));
  if (v.wardPending) out.push("WARD PENDING: " + JSON.stringify(v.wardPending));
  if (v.chaosPending) out.push("CHAOS PENDING: " + JSON.stringify(v.chaosPending));
  if (v.outOfTurnWindow) out.push("OUT-OF-TURN WINDOW: " + JSON.stringify(v.outOfTurnWindow));
  if (v.phase === "finished") out.push(`GAME OVER — winner: ${v.winner} (${v.winReason})`);
  return out.join("\n");
}

function eventLine(e) {
  const skip = new Set(["cardsDealtPrivate"]);
  if (skip.has(e.type)) return null;
  return JSON.stringify(e);
}

ws.on("message", (raw) => {
  const msg = JSON.parse(raw.toString());
  if (msg.type === "error") die(`SERVER: ${msg.message}`);
  if (msg.type === "seat") {
    const s = { roomId: seat?.roomId ?? args[0]?.toUpperCase(), name: msg.playerId, token: msg.token };
    writeFileSync(SEAT_FILE, JSON.stringify(s));
    if (verb === "join") { console.log(`seated as ${msg.playerId} in ${s.roomId}`); afterJoin(); }
  }
  if (msg.type === "events") {
    // A join replays the whole chronicle (replayed: true); only live
    // events are news. `view` prints the tail of history instead.
    if (!msg.replayed) {
      for (const e of msg.events) { const l = eventLine(e); if (l) pendingEvents.push(l); }
    } else if (verb === "view") {
      for (const e of msg.events) { const l = eventLine(e); if (l) historyEvents.push(l); }
    }
  }
  if (msg.type === "state") { view = msg.view; finishAfterState(); }
  if (msg.type === "catchUp") {
    const steps = msg.steps;
    if (steps.length) view = steps[steps.length - 1].view;
    finish();
  }
  if (msg.type === "chat") pendingEvents.push(`CHAT ${msg.player}: ${msg.text}`);
  if (msg.type === "room") { /* roster updates, ignore */ }
});

let done = false;
function finish() {
  if (done) return; done = true;
  if (verb === "view" && historyEvents.length) {
    console.log("RECENT EVENTS (history tail):\n" + historyEvents.slice(-12).join("\n") + "\n");
  }
  if (pendingEvents.length) console.log("NEW EVENTS:\n" + pendingEvents.join("\n") + "\n");
  if (view) console.log(renderView(view));
  else console.log("(no game running yet — waiting for the start)");
  process.exit(0);
}
let stateTimer = null;
function finishAfterState() {
  // commands produce one state per player broadcast; give trailing events a beat
  if (stateTimer) clearTimeout(stateTimer);
  stateTimer = setTimeout(finish, 700);
}
function afterJoin() {
  send({ type: "catchUp", sinceSeq: 0 });
  setTimeout(() => { if (!done) finish(); }, 6000);
}

ws.on("open", () => {
  if (verb === "join") {
    if (!args[0] || !args[1]) die("usage: join <ROOM> <NAME>");
    send({ type: "join", roomId: args[0].toUpperCase(), name: args[1], token: null });
  } else if (!seat) {
    die("no seat yet — join first");
  } else {
    send({ type: "join", roomId: seat.roomId, name: seat.name, token: seat.token });
    setTimeout(() => {
      if (verb === "view") {
        send({ type: "catchUp", sinceSeq: 0 });
      } else if (verb === "do") {
        send({ type: "command", command: JSON.parse(args[0]) });
        setTimeout(() => { if (!done) finish(); }, 8000);
      } else if (verb === "chat") {
        send({ type: "chat", text: args[0] });
        setTimeout(() => { console.log("said."); process.exit(0); }, 800);
      } else die(`unknown verb: ${verb}`);
    }, 600);
  }
});
ws.on("error", (e) => die(`socket error: ${e.message}`));