// ==UserScript==
// @name           Neopets Pyramids Autoplayer
// @namespace      GreaseMonkey
// @version        1.1
// @description    Auto-plays Neopets Pyramids
// @match          *://www.neopets.com/games/pyramids/*
// @author         @willnjohnson
// @grant          none
// @run-at         document-end
// @license        MIT
// @downloadURL https://update.greasyfork.icu/scripts/576510/Neopets%20Pyramids%20Autoplayer.user.js
// @updateURL https://update.greasyfork.icu/scripts/576510/Neopets%20Pyramids%20Autoplayer.meta.js
// ==/UserScript==

(async () => { // Made the main IIFE async to allow awaiting checkForErrorMessage
  const DELAY_GO_BACK = () => Math.floor(Math.random() * (1800 - 1050 + 1)) + 1050;
  const DELAY_RELOAD_PAGE = () => Math.floor(Math.random() * (1500 - 1000 + 1)) + 1000;

  const getElement = (selector, context = document) => {
      try {
          return context.querySelector(selector);
      } catch (e) {
          return null;
      }
  };

  const SELECTORS = {
      errorMessageDiv: "div.errorMessage b",
      continuePlayingButton: "form[action='pyramids.phtml'] input[type='submit'][value='Continue Playing']",
  };

  async function goBack() {
      await new Promise(resolve => setTimeout(resolve, DELAY_GO_BACK()));
      window.history.back();
  }

  async function reloadPage() {
      await new Promise(resolve => setTimeout(resolve, DELAY_RELOAD_PAGE()));
      window.location.replace("https://www.neopets.com/games/pyramids/pyramids.phtml");
  }

  async function checkForErrorMessage() {
      const errorBoldText = getElement(SELECTORS.errorMessageDiv);
      if (errorBoldText && errorBoldText.textContent.includes("Error: ") && errorBoldText.closest("div.errorMessage").textContent.includes("You have been directed to this page from the wrong place!")) {
          await goBack();
          return true;
      }
      return false; // No error found or handled
  }

  if (await checkForErrorMessage()) {
      return; // Stop script execution if an error was found and handled
  }

  const R = /\/(\d+)_\w+\.gif/;
  const hl = el => { if(el){el.style.border='2px solid magenta'; el.style.boxSizing='border-box'; el.style.boxShadow='magenta 0 0 12px 3px';} };
  const clickHl = (el,min=500,max=750) => { if(!el) return;
    if(["input[value='Play Pyramids Again!']", "a[href*='pyramids.phtml?action=collect']"].some(s=>el.matches?.(s))) {
      setTimeout(()=>el.click(),Math.random()*(max-min)+min); return;
    }
    if(el.tagName==='A'){const i=el.querySelector('img'); if(i){hl(i); setTimeout(()=>el.click(),Math.random()*(max-min)+min); return;}}
    hl(el); setTimeout(()=>el.click(),Math.random()*(max-min)+min);
  };
  const faceRank = () => {
    for(const i of document.querySelectorAll("img[src*='mcards/']")){
      if(i.src.includes("backs")||i.src.includes("empty")) continue;
      if(i.parentElement?.tagName==='A' && i.parentElement.href.includes("action=play")) continue;
      const m=R.exec(i.src); if(m) return +m[1];
    }
  };
  const playable = () => [...document.querySelectorAll("a[href*='action=play&position=']")]
    .map(a=>{
      const p=/position=(\d+)/.exec(a.href), i=a.querySelector("img[src*='mcards/']"), r=i&&R.exec(i.src);
      return p&&r?{pos:+p[1],rank:+r[1],el:a}:null;
    }).filter(Boolean);
  const adj = r => [r>2?r-1:14, r<14?r+1:2];
  const maxChain = (face,cards) => {
    const valid = cards.filter(c => { const [l,h] = adj(face); return c.rank===l||c.rank===h; });
    if(!valid.length) return 0;
    return 1+Math.max(...valid.map(c => maxChain(c.rank, cards.filter(x=>x.pos!==c.pos))));
  };

  // Keep track if any action was taken
  let actionTaken = false;

  if(document.querySelector("input[value='Play Pyramids Again!']")) {
    clickHl(document.querySelector("input[value='Play Pyramids Again!']"),700,800);
    actionTaken = true;
  }
  if(!actionTaken && document.querySelector("a[href*='pyramids.phtml?action=collect']")) {
    clickHl(document.querySelector("a[href*='pyramids.phtml?action=collect']"),700,800);
    actionTaken = true;
  }

  // Handle "Continue Playing" screen
  if (!actionTaken && document.querySelector(SELECTORS.continuePlayingButton)) {
      clickHl(document.querySelector(SELECTORS.continuePlayingButton), 700, 800);
      actionTaken = true;
  }

  const face=faceRank();
  if(!actionTaken && !face) { // If no other action and no face card found, it might be an invalid state.
      // This could happen if the game hasn't loaded properly, or is between states.
      // We will let the final reload handle this for robustness.
  }

  if(!actionTaken && face) { // Only proceed with game logic if no prior action was taken
      const plays=playable(), [left,right]=adj(face);
      const valid=plays.filter(c=>c.rank===left||c.rank===right);
      if(valid.length){
        let best=valid[0],bestScore=0;
        for(const m of valid){
          // CORRECTED: changed 'c' to 'x' in filter for maxChain
          const score=maxChain(m.rank, plays.filter(x=>x.pos!==m.pos));
          if(score>bestScore){bestScore=score; best=m;}
        }
        clickHl(best.el,500,1500);
        actionTaken = true;
      }
      if(!actionTaken){ // Only try to draw if no other moves were found
          const draw=document.querySelector("a[href='pyramids.phtml?action=draw']");
          if(draw) {
              clickHl(draw.querySelector('img')||draw,550,600);
              actionTaken = true;
          }
      }
  }

  if (!actionTaken) {
      await reloadPage();
  }
})();