// static/js/10-reactions.js
"use strict";

window.Glow = window.Glow || {};

Glow.reactions = Glow.reactions || {
  enabled: true,
  emojis: ["👍", "❤️", "🔥", "😂", "🎉", "👏", "😮", "😢", "👀", "✅", "🚀", "💡"],
  activeMessage: null
};

Glow.submitCustomReaction = async () => {
  const message = Glow.reactions.activeMessage;
  const input = Glow.els.reactionCustomInput;
  if (!message || !input) return;

  const emoji = input.value.trim();
  if (!emoji) return;

  try {
    const existing = (message.reactions || []).find(item => item.emoji === emoji);

    if (existing?.reacted) {
      await Glow.apiRemoveReaction(message.id, emoji);
    } else {
      await Glow.apiAddReaction(message.id, emoji);
    }

    const data = await Glow.apiGetMessageReactions(message.id);
    message.reactions = data.reactions || [];
    Glow.updateMessageReactionsDom?.(message.id, message.reactions);

    Glow.renderReactionPopupUsers(message.reactions);
    input.value = "";

    if (Glow.state.activeView === "feed") {
      Glow.loadFeed?.();
    }
  } catch (error) {
    Glow.showToast(error.message || "Could not update reaction.", "error");
  }
};

Glow.openReactionPopup = async message => {
  Glow.reactions.activeMessage = message;

  const grid = Glow.els.reactionPopupGrid;
  const list = Glow.els.reactionPopupList;
  const customInput = Glow.els.reactionCustomInput;

  if (!grid || !list) return;

  grid.replaceChildren();
  list.replaceChildren();

  for (const emoji of Glow.reactions.emojis) {
    const button = document.createElement("button");
    button.className = "reaction-popup-button";
    button.type = "button";
    button.textContent = emoji;

    button.addEventListener("click", async () => {
      try {
        const existing = (message.reactions || []).find(item => item.emoji === emoji);

        if (existing?.reacted) {
          await Glow.apiRemoveReaction(message.id, emoji);
        } else {
          await Glow.apiAddReaction(message.id, emoji);
        }

        const data = await Glow.apiGetMessageReactions(message.id);
        message.reactions = data.reactions || [];
        Glow.updateMessageReactionsDom?.(message.id, message.reactions);

        Glow.renderReactionPopupUsers(message.reactions);

        if (Glow.state.activeView === "feed") {
          Glow.loadFeed?.();
        }
      } catch (error) {
        Glow.showToast(error.message || "Could not update reaction.", "error");
      }
    });

    grid.append(button);
  }

  try {
    const data = await Glow.apiGetMessageReactions(message.id);
    message.reactions = data.reactions || [];
  } catch (_) {
    message.reactions = [];
  }

  if (customInput) {
    customInput.value = "";
  }

  Glow.renderReactionPopupUsers(message.reactions || []);
  Glow.els.reactionPopupOverlay?.classList.remove("hidden");

  setTimeout(() => {
    Glow.els.reactionCustomInput?.focus();
  }, 0);
};

Glow.renderReactionPopupUsers = reactions => {
  const list = Glow.els.reactionPopupList;
  if (!list) return;

  list.replaceChildren();

  if (!reactions.length) {
    const empty = document.createElement("div");
    empty.className = "reaction-popup-user";
    empty.textContent = "No reactions yet.";
    list.append(empty);
    return;
  }

  for (const reaction of reactions) {
    const section = document.createElement("div");
    section.className = "reaction-popup-section";

    const title = document.createElement("div");
    title.className = "reaction-popup-user";
    title.innerHTML = `<strong>${reaction.emoji} ${reaction.count}</strong>`;
    section.append(title);

    for (const user of reaction.users || []) {
      const row = document.createElement("div");
      row.className = "reaction-popup-user";

      const left = document.createElement("span");
      left.textContent = user.username;

      const right = document.createElement("span");
      right.textContent = new Date(user.created_at).toLocaleString();

      row.append(left, right);
      section.append(row);
    }

    list.append(section);
  }
};

Glow.closeReactionPopup = () => {
  Glow.reactions.activeMessage = null;
  if (Glow.els.reactionCustomInput) {
    Glow.els.reactionCustomInput.value = "";
  }
  Glow.els.reactionPopupOverlay?.classList.add("hidden");
};

Glow.els.reactionCustomButton?.addEventListener("click", () => {
  Glow.submitCustomReaction?.();
});

Glow.els.reactionCustomInput?.addEventListener("keydown", event => {
  if (event.key === "Enter") {
    event.preventDefault();
    Glow.submitCustomReaction?.();
  }
});