/* ==========================================================================
   Transfer Broadcast Graphics  -  Controller
   Data: data/transfers.json (generated from assets/transfers-list.csv)
   ========================================================================== */

(function () {
  "use strict";

  var REVEAL_TIME  = 5000;   // 5 seconds in State 1, then -> compact
  var AUTOPLAY_MS   = 8000;   // auto-advance interval

  var transfers     = [];
  var currentIndex  = 0;
  var compactTimer  = null;
  var autoplayTimer = null;
  var isHidden      = true;
  var autoplayOn    = false;
  var skipReveal    = false;   // if true, jump straight to compact (on reload restore)

  var container, card, opCounter;

  function $(id) { return document.getElementById(id); }

  // --------------------------------------------------------------------
  async function init() {
    container = $("graphicsContainer");
    card      = $("transferCard");
    opCounter = $("currentTransfer");

    try {
      var res  = await fetch("data/transfers.json");
      var data = await res.json();
      transfers = data.transfers;
    } catch (e) {
      console.error("Failed to load transfers.json", e);
      opCounter.textContent = "DATA ERROR";
      return;
    }

    var saved = sessionStorage.getItem("transferIndex");
    if (saved !== null) {
      var idx = parseInt(saved, 10);
      if (!isNaN(idx) && idx >= 0 && idx < transfers.length) {
        currentIndex = idx;
        skipReveal = true;
        showTransfer(currentIndex);
      }
    }

    updateCounter();
    setupKeys();
    console.log("Loaded " + transfers.length + " transfers. Press \u2192 or Enter to start.");
  }

  // --------------------------------------------------------------------
  function showTransfer(index) {
    if (!transfers.length) return;
    var t = transfers[index];
    if (!t) return;

    container.classList.remove("compact");

    // photo
    $("playerPhoto").src = t.photo;

    // text
    $("playerName").textContent = t.playerName;
    $("teamName").textContent   = t.team.name;
    $("teamLogo").src            = t.team.logo;

    // price / status
    var badge = $("priceBadge");
    var priceValue = $("priceValue");
    var priceLabel = $("priceLabel");

    badge.classList.remove("free-agent", "loan");

    if (t.status === "free-agent") {
      badge.classList.add("free-agent");
      priceLabel.textContent = "СТАТУС";
      priceValue.textContent = t.price;
    } else if (t.status === "loan") {
      badge.classList.add("loan");
      priceLabel.textContent = "СТАТУС";
      priceValue.textContent = t.price;
    } else {
      priceLabel.textContent = "СУММА";
      priceValue.textContent = t.price;
    }

    // team colour vars
    card.style.setProperty("--team-color",  t.team.color);
    card.style.setProperty("--team-accent", t.team.accent);

    // show
    container.classList.remove("hidden");
    container.classList.add("visible");
    isHidden = false;

    if (skipReveal) {
      skipReveal = false;
      container.classList.add("compact");
      card.classList.remove("reveal");
    } else {
      container.classList.remove("compact");
      card.classList.remove("reveal");
      void card.offsetWidth;
      card.classList.add("reveal");

      clearTimeout(compactTimer);
      compactTimer = setTimeout(function () {
        card.classList.remove("reveal");
        container.classList.add("compact");
      }, REVEAL_TIME);
    }

    sessionStorage.setItem("transferIndex", String(index));
    updateCounter();
  }

  // --------------------------------------------------------------------
  function next() {
    if (isHidden) { showTransfer(currentIndex); return; }
    currentIndex = (currentIndex + 1) % transfers.length;
    showTransfer(currentIndex);
  }
  function prev() {
    if (isHidden) { showTransfer(currentIndex); return; }
    currentIndex = (currentIndex - 1 + transfers.length) % transfers.length;
    showTransfer(currentIndex);
  }
  function replay() { showTransfer(currentIndex); }

  function toggleHide() {
    if (isHidden) {
      isHidden = false;
      replay();
    } else {
      isHidden = true;
      container.classList.add("hidden");
      container.classList.remove("visible");
      clearTimeout(compactTimer);
    }
  }

  function toggleAutoplay() {
    autoplayOn = !autoplayOn;
    if (autoplayOn) {
      console.log("Autoplay ON");
      if (isHidden) replay();
      autoplayTimer = setInterval(next, AUTOPLAY_MS);
    } else {
      console.log("Autoplay OFF");
      clearInterval(autoplayTimer);
    }
  }

  // --------------------------------------------------------------------
  function updateCounter() {
    if (transfers.length && opCounter)
      opCounter.textContent = (currentIndex + 1) + " / " + transfers.length;
  }

  // --------------------------------------------------------------------
  function setupKeys() {
    document.addEventListener("keydown", function (e) {
      switch (e.key) {
        case "ArrowRight":
        case "Enter":
          e.preventDefault(); next();     break;
        case "ArrowLeft":
        case "Backspace":
          e.preventDefault(); prev();     break;
        case "r": case "R":  replay();        break;
        case "h": case "H":  toggleHide();    break;
        case "a": case "A":  toggleAutoplay(); break;
      }
    });
  }

  // Expose for CasparCG / OBS / external control
  window.transferGraphics = {
    next:     next,
    prev:     prev,
    replay:   replay,
    hide:     function () { if (!isHidden) toggleHide(); },
    show:     function () { if (isHidden) toggleHide(); },
    showAt:   function (i) { currentIndex = i; showTransfer(i); },
    autoplay: toggleAutoplay,
  };

  // GO
  if (document.readyState === "loading")
    document.addEventListener("DOMContentLoaded", init);
  else
    init();
})();