(function () {
  "use strict";

  var popoverEl = null;
  var currentSubreddit = null;
  var currentAnchor = null;
  var editState = { light: null, dark: null };
  var selectedMode = "light";

  var els = {};

  function getHelpers() {
    return {
      isDarkMode: window.RedditTweaks.badgeTweak.isDarkMode,
      getColorPrefix: window.RedditTweaks.badgeTweak.getColorPrefix,
    };
  }

  function hexValid(val) {
    return /^#[0-9a-f]{6}$/i.test(val);
  }

  function colorToHex(val) {
    if (!val) return "#ffffff";
    return val;
  }

  function createPopover() {
    var el = document.createElement("div");
    el.className = "rt-color-popover";

    el.innerHTML = [
      '<div class="rt-popover-header">',
      '  <span class="rt-popover-title"></span>',
      '  <button class="rt-popover-close" type="button">\u00d7</button>',
      "</div>",
      '<div class="rt-popover-mode">',
      '  <select class="rt-popover-mode-select">',
      '    <option value="light">Light</option>',
      '    <option value="dark">Dark</option>',
      "  </select>",
      "</div>",
      '<div class="rt-popover-body">',
      '  <div class="rt-popover-row" data-prop="bg">',
      '    <span class="rt-popover-row-label">Background</span>',
      '    <div class="rt-popover-row-inputs">',
      '      <input type="color" class="rt-color-swatch">',
      '      <input type="text" class="rt-color-hex" maxlength="7">',
      "    </div>",
      "  </div>",
      '  <div class="rt-popover-row" data-prop="border">',
      '    <span class="rt-popover-row-label">Border</span>',
      '    <div class="rt-popover-row-inputs">',
      '      <input type="color" class="rt-color-swatch">',
      '      <input type="text" class="rt-color-hex" maxlength="7">',
      "    </div>",
      "  </div>",
      '  <div class="rt-popover-row" data-prop="text">',
      '    <span class="rt-popover-row-label">Text</span>',
      '    <div class="rt-popover-row-inputs">',
      '      <input type="color" class="rt-color-swatch">',
      '      <input type="text" class="rt-color-hex" maxlength="7">',
      "    </div>",
      "  </div>",
      "</div>",
      '<div class="rt-popover-preview">',
      '  <span class="rt-badge rt-badge--subreddit rt-popover-preview-badge" style="padding-right:6px"></span>',
      "</div>",
      '<div class="rt-popover-footer">',
      '  <button class="rt-btn-reset" type="button">Reset Default</button>',
      '  <div class="rt-popover-footer-right">',
      '    <button class="rt-btn-cancel" type="button">Cancel</button>',
      '    <button class="rt-btn-save" type="button">Save</button>',
      "  </div>",
      "</div>",
    ].join("\n");

    document.body.appendChild(el);
    popoverEl = el;

    els.title = el.querySelector(".rt-popover-title");
    els.closeBtn = el.querySelector(".rt-popover-close");
    els.modeSelect = el.querySelector(".rt-popover-mode-select");
    els.preview = el.querySelector(".rt-popover-preview-badge");
    els.saveBtn = el.querySelector(".rt-btn-save");
    els.cancelBtn = el.querySelector(".rt-btn-cancel");
    els.resetBtn = el.querySelector(".rt-btn-reset");

    els.rows = {};
    var rows = el.querySelectorAll(".rt-popover-row");
    for (var i = 0; i < rows.length; i++) {
      var row = rows[i];
      var prop = row.getAttribute("data-prop");
      els.rows[prop] = {
        swatch: row.querySelector(".rt-color-swatch"),
        hex: row.querySelector(".rt-color-hex"),
      };
    }

    els.closeBtn.addEventListener("click", close);
    els.cancelBtn.addEventListener("click", close);
    els.saveBtn.addEventListener("click", save);
    els.resetBtn.addEventListener("click", resetToDefault);

    els.modeSelect.addEventListener("change", function () {
      storeCurrentEdits();
      selectedMode = els.modeSelect.value;
      loadModeIntoInputs();
      updatePreview();
    });

    var props = ["bg", "border", "text"];
    for (var p = 0; p < props.length; p++) {
      (function (prop) {
        var row = els.rows[prop];
        row.swatch.addEventListener("input", function () {
          row.hex.value = row.swatch.value;
          row.hex.classList.remove("rt-input-error");
          updatePreview();
        });
        row.hex.addEventListener("input", function () {
          if (hexValid(row.hex.value)) {
            row.swatch.value = row.hex.value;
            row.hex.classList.remove("rt-input-error");
            updatePreview();
          } else {
            row.hex.classList.add("rt-input-error");
          }
        });
      })(props[p]);
    }

    document.addEventListener("mousedown", onDocumentMouseDown, true);
    document.addEventListener("keydown", onDocumentKeyDown, true);
  }

  function onDocumentMouseDown(e) {
    if (!popoverEl || !popoverEl.classList.contains("rt-popover-visible")) return;
    if (popoverEl.contains(e.target)) return;

    var active = document.activeElement;
    if (active && active.type === "color" && popoverEl.contains(active)) return;

    close();
  }

  function onDocumentKeyDown(e) {
    if (e.key === "Escape" && popoverEl && popoverEl.classList.contains("rt-popover-visible")) {
      close();
    }
  }

  function getDefaultsForMode(settings, mode) {
    return {
      bg: settings[mode + ".subredditBgColor"],
      border: settings[mode + ".subredditBorderColor"],
      text: settings[mode + ".subredditTextColor"],
    };
  }

  function getColorsForMode(settings, subredditName, mode) {
    var entry = settings.subredditColors[subredditName];
    if (entry && entry[mode]) {
      return { bg: entry[mode].bg, border: entry[mode].border, text: entry[mode].text };
    }
    return getDefaultsForMode(settings, mode);
  }

  function storeCurrentEdits() {
    editState[selectedMode] = {
      bg: els.rows.bg.swatch.value,
      border: els.rows.border.swatch.value,
      text: els.rows.text.swatch.value,
    };
  }

  function loadModeIntoInputs() {
    var colors = editState[selectedMode];
    var props = ["bg", "border", "text"];
    for (var i = 0; i < props.length; i++) {
      var prop = props[i];
      var val = colorToHex(colors[prop]);
      els.rows[prop].swatch.value = val;
      els.rows[prop].hex.value = val;
      els.rows[prop].hex.classList.remove("rt-input-error");
    }
  }

  function updatePreview() {
    var bg = els.rows.bg.swatch.value;
    var border = els.rows.border.swatch.value;
    var text = els.rows.text.swatch.value;
    els.preview.style.background = bg;
    els.preview.style.borderColor = border;
    els.preview.style.color = text;
  }

  function positionPopover(anchorEl) {
    var rect = anchorEl.getBoundingClientRect();
    var gap = 6;

    popoverEl.style.visibility = "hidden";
    popoverEl.classList.add("rt-popover-visible");

    var popRect = popoverEl.getBoundingClientRect();
    var top = rect.bottom + window.scrollY + gap;
    var left = rect.left + window.scrollX;

    if (rect.bottom + gap + popRect.height > window.innerHeight) {
      top = rect.top + window.scrollY - popRect.height - gap;
    }

    var maxLeft = document.documentElement.scrollWidth - popRect.width - 8;
    if (left > maxLeft) left = maxLeft;
    if (left < 8) left = 8;

    popoverEl.style.top = top + "px";
    popoverEl.style.left = left + "px";
    popoverEl.style.visibility = "";
  }

  function applyDarkModeToPopover(settings) {
    var helpers = getHelpers();
    if (helpers.isDarkMode(settings)) {
      popoverEl.classList.add("rt-dark");
    } else {
      popoverEl.classList.remove("rt-dark");
    }
  }

  function open(badgeEl, subredditName, settings) {
    if (!popoverEl) createPopover();

    if (currentSubreddit === subredditName && popoverEl.classList.contains("rt-popover-visible")) {
      close();
      return;
    }

    currentSubreddit = subredditName;
    currentAnchor = badgeEl;

    var helpers = getHelpers();
    selectedMode = helpers.getColorPrefix(settings);

    editState.light = getColorsForMode(settings, subredditName, "light");
    editState.dark = getColorsForMode(settings, subredditName, "dark");

    els.title.textContent = "r/" + subredditName;
    els.modeSelect.value = selectedMode;
    els.preview.textContent = "r/" + subredditName;

    applyDarkModeToPopover(settings);
    loadModeIntoInputs();
    updatePreview();
    positionPopover(badgeEl);
  }

  function close() {
    if (!popoverEl) return;
    popoverEl.classList.remove("rt-popover-visible");
    currentSubreddit = null;
    currentAnchor = null;
    editState = { light: null, dark: null };
  }

  async function save() {
    if (!currentSubreddit) return;

    storeCurrentEdits();

    var settings = await window.RedditTweaks.loadSettings();
    var entry = settings.subredditColors[currentSubreddit] || {};

    if (editState.light) entry.light = editState.light;
    if (editState.dark) entry.dark = editState.dark;

    settings.subredditColors[currentSubreddit] = entry;
    await window.RedditTweaks.saveSettings(settings);
    close();
  }

  async function resetToDefault() {
    if (!currentSubreddit) return;

    var settings = await window.RedditTweaks.loadSettings();
    delete settings.subredditColors[currentSubreddit];
    await window.RedditTweaks.saveSettings(settings);

    editState.light = getDefaultsForMode(settings, "light");
    editState.dark = getDefaultsForMode(settings, "dark");
    loadModeIntoInputs();
    updatePreview();
  }

  window.RedditTweaks = window.RedditTweaks || {};
  window.RedditTweaks.colorPopover = {
    open: open,
    close: close,
  };
})();