// static/js/03-admin.js
"use strict";

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

Glow.closeAdminPanel = () => {
  Glow.els.adminPanel.classList.remove("open");
  Glow.els.adminPanel.setAttribute("aria-hidden", "true");
  Glow.els.adminFab.focus();
};

Glow.renderAdminUsers = users => {
  Glow.els.adminUsers.replaceChildren();

  const heading = document.createElement("h3");
  heading.textContent = "Users";
  Glow.els.adminUsers.append(heading);

  if (!users.length) {
    const empty = document.createElement("p");
    empty.className = "admin-empty";
    empty.textContent = "No users found.";
    Glow.els.adminUsers.append(empty);
    return;
  }

  for (const user of users) {
    const row = document.createElement("div");
    row.className = "admin-user";

    const details = document.createElement("div");

    const name = document.createElement("div");
    name.className = "admin-user-name";
    name.textContent = `${user.username} · ${user.role}`;

    const info = document.createElement("div");
    info.className = "admin-user-info";
    info.textContent =
      `${user.status} · ${user.message_count} message(s)` +
      (user.restricted_until
        ? ` · until ${new Date(user.restricted_until).toLocaleString()}`
        : "");

    details.append(name, info);

    const actions = document.createElement("div");
    actions.className = "admin-user-actions";

    const current =
      Glow.state.currentUser &&
      Number(Glow.state.currentUser.id) === Number(user.id);

    if (!current && Glow.isAdmin()) {
      const role = document.createElement("button");
      role.className = "small-button";
      role.type = "button";
      role.textContent =
        user.role === "moderator" ? "Make user" : "Make moderator";

      role.addEventListener("click", () => {
        Glow.updateAdminUser(user.id, {
          role: user.role === "moderator" ? "user" : "moderator"
        });
      });

      const restrict = document.createElement("button");
      restrict.className = "small-button";
      restrict.type = "button";
      restrict.textContent =
        user.status === "restricted" ? "Unrestrict" : "Restrict";

      restrict.addEventListener("click", () => {
        Glow.toggleRestriction(user);
      });

      const blacklist = document.createElement("button");
      blacklist.className = "small-button danger";
      blacklist.type = "button";
      blacklist.textContent =
        user.status === "blacklisted" ? "Unblacklist" : "Blacklist";

      blacklist.addEventListener("click", () => {
        Glow.toggleBlacklist(user);
      });

      actions.append(role, restrict, blacklist);
    }

    row.append(details, actions);
    Glow.els.adminUsers.append(row);
  }
};

Glow.renderAdminRooms = rooms => {
  Glow.els.adminRooms.replaceChildren();

  const heading = document.createElement("h3");
  heading.textContent = "Rooms";
  Glow.els.adminRooms.append(heading);

  if (!rooms.length) {
    const empty = document.createElement("p");
    empty.className = "admin-empty";
    empty.textContent = "No rooms found.";
    Glow.els.adminRooms.append(empty);
    return;
  }

  for (const room of rooms) {
    const row = document.createElement("div");
    row.className = "admin-room";

    const details = document.createElement("div");

    const name = document.createElement("div");
    name.className = "admin-room-name";
    name.textContent = `${room.name} · ${room.visibility}`;

    const info = document.createElement("div");
    info.className = "admin-room-info";
    info.textContent =
      `/${room.slug}` +
      (room.description ? ` · ${room.description}` : "");

    details.append(name, info);

    const actions = document.createElement("div");
    actions.className = "admin-room-actions";

    if (Glow.isAdmin()) {
      const edit = document.createElement("button");
      edit.className = "small-button";
      edit.type = "button";
      edit.textContent = "Edit";
      edit.addEventListener("click", () => Glow.editRoom(room));

      actions.append(edit);

      if (room.visibility === "private") {
        const members = document.createElement("button");
        members.className = "small-button";
        members.type = "button";
        members.textContent = "Members";
        members.addEventListener("click", () => {
          Glow.manageRoomMembers(room);
        });

        const invite = document.createElement("button");
        invite.className = "small-button";
        invite.type = "button";
        invite.textContent = "Invite link";
        invite.addEventListener("click", () => {
          Glow.createInviteLink(room);
        });

        actions.append(members, invite);
      }

      if (room.slug !== "general") {
        const remove = document.createElement("button");
        remove.className = "small-button danger";
        remove.type = "button";
        remove.textContent = "Delete";
        remove.addEventListener("click", () => Glow.deleteRoom(room));

        actions.append(remove);
      }
    }

    row.append(details, actions);
    Glow.els.adminRooms.append(row);
  }
};

Glow.openAdminPanel = async () => {
  if (!Glow.canModerate()) return;

  Glow.els.adminPanel.classList.add("open");
  Glow.els.adminPanel.setAttribute("aria-hidden", "false");

  Glow.els.adminUsers.textContent = "Loading users…";
  Glow.els.adminRooms.textContent = "Loading rooms…";

  try {
    const [usersData, roomsData] = await Promise.all([
      Glow.apiRequest("/api/admin/users"),
      Glow.apiRequest("/api/admin/rooms")
    ]);

    Glow.renderAdminUsers(usersData.users || []);
    Glow.renderAdminRooms(roomsData.rooms || []);
    Glow.updateAdminPreferenceButtons();

    setTimeout(() => Glow.els.closeAdminButton.focus(), 0);
  } catch (error) {
    Glow.showToast(error.message, "error");
  }
};

Glow.updateThemeButton = () => {
  if (!Glow.els.themeButton) return;
  Glow.els.themeButton.textContent = "Accent color";
};

Glow.updateAdminPreferenceButtons = () => {
  Glow.els.typingToggleButton.textContent =
    `Typing indicators: ${Glow.state.typingIndicatorsEnabled ? "on" : "off"}`;

  Glow.els.notificationsToggleButton.textContent =
    `Notifications: ${Glow.state.notificationsEnabled ? "on" : "off"}`;

  Glow.updateThemeButton();
};

Glow.openAccentColorPicker = async () => {
  const container = document.createElement("div");
  container.className = "accent-picker";

  const description = document.createElement("p");
  description.className = "accent-picker-description";
  description.textContent =
    "Choose an accent color for focus rings, buttons, selected controls, and highlighted mentions. It is stored only in this browser unless saved in account settings.";

  const label = document.createElement("label");
  label.className = "accent-picker-label";
  label.textContent = "Accent color";

  const row = document.createElement("div");
  row.className = "accent-picker-row";

  const colorInput = document.createElement("input");
  colorInput.className = "accent-color-input";
  colorInput.type = "color";
  colorInput.value =
    Glow.normalizeAccentColor(Glow.state.accentColor) ||
    Glow.DEFAULT_ACCENT_COLOR;
  colorInput.setAttribute("aria-label", "Choose accent color");

  const hexInput = document.createElement("input");
  hexInput.className = "field accent-hex-input";
  hexInput.type = "text";
  hexInput.value = colorInput.value;
  hexInput.maxLength = 7;
  hexInput.autocomplete = "off";
  hexInput.autocapitalize = "off";
  hexInput.spellcheck = false;
  hexInput.placeholder = "#f7dce8";
  hexInput.setAttribute(
    "aria-label",
    "Accent color hexadecimal value"
  );

  const preview = document.createElement("span");
  preview.className = "accent-preview";
  preview.style.background = colorInput.value;
  preview.setAttribute("aria-hidden", "true");

  const error = document.createElement("div");
  error.className = "accent-picker-error";
  error.setAttribute("role", "status");

  const updatePreview = value => {
    const normalized = Glow.normalizeAccentColor(value);

    if (!normalized) {
      preview.style.background = "transparent";
      error.textContent =
        "Use a six-digit hex color, such as #7dd3fc.";
      return false;
    }

    preview.style.background = normalized;
    error.textContent = "";

    if (colorInput.value !== normalized) {
      colorInput.value = normalized;
    }

    return true;
  };

  colorInput.addEventListener("input", () => {
    const color = Glow.normalizeAccentColor(colorInput.value);
    if (!color) return;
    hexInput.value = color;
    updatePreview(color);
  });

  hexInput.addEventListener("input", () => {
    updatePreview(hexInput.value.trim());
  });

  row.append(colorInput, hexInput, preview);
  label.append(row);
  container.append(description, label, error);

  const result = await Glow.openDialog({
    title: "Accent color",
    body: container,
    confirmText: "Save color",
    cancelText: "Cancel"
  });

  if (!result) return;

  const accent = Glow.normalizeAccentColor(hexInput.value);

  if (!accent) {
    Glow.showToast(
      "Choose a valid six-digit hexadecimal color.",
      "error"
    );
    return;
  }

  Glow.applyAccentColor(accent);
  Glow.showToast("Accent color updated.");
};

Glow.toggleRestriction = async user => {
  if (user.status === "restricted") {
    return Glow.updateAdminUser(user.id, {
      status: "active",
      restricted_until: null
    });
  }

  const values = await Glow.openDialog({
    title: `Restrict ${user.username}`,
    body: "Enter the restriction duration in minutes.",
    confirmText: "Restrict",
    danger: true,
    fields: [
      {
        name: "minutes",
        label: "Duration in minutes",
        type: "number",
        value: "60",
        maxLength: 5
      }
    ]
  });

  if (!values) return;

  const minutes = Number(values.minutes);

  if (!Number.isFinite(minutes) || minutes < 1 || minutes > 43200) {
    Glow.showToast(
      "Enter a duration between 1 minute and 30 days.",
      "error"
    );
    return;
  }

  await Glow.updateAdminUser(user.id, {
    status: "restricted",
    restricted_until: new Date(
      Date.now() + minutes * 60 * 1000
    ).toISOString()
  });
};

Glow.toggleBlacklist = async user => {
  const blacklisting = user.status !== "blacklisted";

  const result = await Glow.openDialog({
    title: blacklisting
      ? `Blacklist ${user.username}?`
      : `Unblacklist ${user.username}?`,
    body: blacklisting
      ? "The account will be denied access immediately."
      : "The account will be restored to active status.",
    confirmText: blacklisting ? "Blacklist" : "Unblacklist",
    danger: blacklisting
  });

  if (!result) return;

  await Glow.updateAdminUser(user.id, {
    status: blacklisting ? "blacklisted" : "active"
  });
};

Glow.updateAdminUser = async (userId, changes) => {
  try {
    await Glow.apiRequest(`/api/admin/users/${encodeURIComponent(userId)}`, {
      method: "PATCH",
      headers: { "Content-Type": "application/json" },
      body: JSON.stringify(changes)
    });

    Glow.showToast("User updated.");
    await Glow.openAdminPanel();
  } catch (error) {
    Glow.showToast(error.message, "error");
  }
};

Glow.createRoom = async () => {
  const values = await Glow.openDialog({
    title: "Create room",
    body: "Choose a room name, description, and visibility.",
    confirmText: "Create",
    fields: [
      {
        name: "name",
        label: "Room name",
        placeholder: "Project chat",
        maxLength: 60
      },
      {
        name: "description",
        label: "Description",
        placeholder: "Optional room description",
        multiline: true,
        rows: 3,
        maxLength: 300
      },
      {
        name: "visibility",
        label: "Visibility: public or private",
        value: "public",
        maxLength: 7
      }
    ]
  });

  if (!values) return;

  const visibility = values.visibility.toLowerCase();

  if (!["public", "private"].includes(visibility)) {
    Glow.showToast("Visibility must be public or private.", "error");
    return;
  }

  try {
    await Glow.apiRequest("/api/rooms", {
      method: "POST",
      headers: { "Content-Type": "application/json" },
      body: JSON.stringify({
        name: values.name,
        description: values.description,
        visibility
      })
    });

    Glow.showToast("Room created.");
    await Glow.loadRooms();
    await Glow.openAdminPanel();
  } catch (error) {
    Glow.showToast(error.message, "error");
  }
};

Glow.editRoom = async room => {
  const values = await Glow.openDialog({
    title: `Edit ${room.name}`,
    confirmText: "Save",
    fields: [
      {
        name: "name",
        label: "Room name",
        value: room.name,
        maxLength: 60
      },
      {
        name: "description",
        label: "Description",
        value: room.description || "",
        multiline: true,
        rows: 3,
        maxLength: 300
      },
      {
        name: "visibility",
        label: "Visibility: public or private",
        value: room.visibility,
        maxLength: 7
      }
    ]
  });

  if (!values) return;

  const visibility = values.visibility.toLowerCase();

  if (!["public", "private"].includes(visibility)) {
    Glow.showToast("Visibility must be public or private.", "error");
    return;
  }

  await Glow.updateRoom(room.slug, {
    name: values.name,
    description: values.description,
    visibility
  });
};

Glow.updateRoom = async (slug, changes) => {
  try {
    await Glow.apiRequest(`/api/rooms/${encodeURIComponent(slug)}`, {
      method: "PATCH",
      headers: { "Content-Type": "application/json" },
      body: JSON.stringify(changes)
    });

    Glow.showToast("Room updated.");
    await Glow.loadRooms();

    if (!Glow.state.activeDm) {
      await Glow.loadMessages();
    }

    await Glow.openAdminPanel();
  } catch (error) {
    Glow.showToast(error.message, "error");
  }
};

Glow.deleteRoom = async room => {
  const result = await Glow.openDialog({
    title: `Delete ${room.name}?`,
    body: "This permanently deletes the room and every message in it.",
    confirmText: "Delete room",
    danger: true
  });

  if (!result) return;

  try {
    await Glow.apiRequest(`/api/rooms/${encodeURIComponent(room.slug)}`, {
      method: "DELETE"
    });

    Glow.showToast("Room deleted.");
    await Glow.loadRooms();

    if (!Glow.state.activeDm) {
      await Glow.loadMessages();
    }

    await Glow.openAdminPanel();
  } catch (error) {
    Glow.showToast(error.message, "error");
  }
};

Glow.clearActiveRoom = async () => {
  const room = Glow.state.activeRoom;

  if (!room || Glow.state.activeDm) return;

  const result = await Glow.openDialog({
    title: `Clear ${room.name}?`,
    body: "All messages in this room will be permanently deleted.",
    confirmText: "Clear room",
    danger: true
  });

  if (!result) return;

  try {
    await Glow.apiRequest(
      `/api/rooms/${encodeURIComponent(room.slug)}/messages`,
      { method: "DELETE" }
    );

    Glow.clearMessages();
    Glow.renderEmptyState();
    Glow.showToast("Room messages cleared.");
  } catch (error) {
    Glow.showToast(error.message, "error");
  }
};

Glow.manageRoomMembers = async room => {
  try {
    const data = await Glow.apiRequest(
      `/api/rooms/${encodeURIComponent(room.slug)}/members`
    );

    const container = document.createElement("div");
    container.className = "member-list";

    for (const member of data.members || []) {
      const row = document.createElement("div");
      row.className = "member-row";

      const name = document.createElement("span");
      name.textContent = `${member.username} · ${member.membership_role}`;

      const remove = document.createElement("button");
      remove.className = "small-button danger";
      remove.type = "button";
      remove.textContent = "Remove";
      remove.disabled = member.membership_role === "owner";

      remove.addEventListener("click", async () => {
        try {
          await Glow.apiRequest(
            `/api/rooms/${encodeURIComponent(room.slug)}/members/${member.id}`,
            { method: "DELETE" }
          );

          Glow.showToast("Member removed.");
          Glow.closeDialog({});
          Glow.manageRoomMembers(room);
        } catch (error) {
          Glow.showToast(error.message, "error");
        }
      });

      row.append(name, remove);
      container.append(row);
    }

    const values = await Glow.openDialog({
      title: `${room.name} members`,
      body: container,
      confirmText: "Add member",
      fields: [
        {
          name: "username",
          label: "Username to add",
          placeholder: "username",
          maxLength: 30
        }
      ]
    });

    if (!values?.username) return;

    await Glow.apiRequest(
      `/api/rooms/${encodeURIComponent(room.slug)}/members`,
      {
        method: "POST",
        headers: { "Content-Type": "application/json" },
        body: JSON.stringify({ username: values.username })
      }
    );

    Glow.showToast("Member added.");
    await Glow.manageRoomMembers(room);
  } catch (error) {
    Glow.showToast(error.message, "error");
  }
};

Glow.createInviteLink = async room => {
  try {
    const data = await Glow.apiRequest(
      `/api/rooms/${encodeURIComponent(room.slug)}/invites`,
      {
        method: "POST",
        headers: { "Content-Type": "application/json" },
        body: JSON.stringify({})
      }
    );

    const url = new URL(
      data.invite.url,
      window.location.origin
    ).toString();

    const values = await Glow.openDialog({
      title: "Private-room invite link",
      body: "Copy and share this link. It can be used once before it expires.",
      confirmText: "Copy link",
      fields: [
        {
          name: "invite",
          label: "Invite link",
          value: url,
          maxLength: 500
        }
      ]
    });

    if (values) {
      await navigator.clipboard.writeText(url);
      Glow.showToast("Invite link copied.");
    }
  } catch (error) {
    Glow.showToast(error.message, "error");
  }
};