import jwt from "jsonwebtoken";
import Member from "../../models/member.js";
import { connectDB } from "../../utils/mongoose.js";

export default defineEventHandler(async (event) => {
  await connectDB();

  // Check if user is authenticated
  const token = getCookie(event, "auth-token");
  let isAuthenticated = false;
  let currentMemberId = null;

  if (token) {
    try {
      const decoded = jwt.verify(token, process.env.JWT_SECRET);
      currentMemberId = decoded.memberId;
      isAuthenticated = true;
    } catch (err) {
      // Invalid token, treat as public
      isAuthenticated = false;
    }
  }

  const query = getQuery(event);
  const search = query.search || "";
  const circle = query.circle || "";
  const tags = query.tags ? query.tags.split(",") : [];

  // Build query
  const dbQuery = {
    showInDirectory: true,
    status: "active",
  };

  // Filter by circle if specified
  if (circle) {
    dbQuery.circle = circle;
  }

  // Search by name or bio
  if (search) {
    dbQuery.$or = [
      { name: { $regex: search, $options: "i" } },
      { bio: { $regex: search, $options: "i" } },
    ];
  }

  // Filter by tags (search in offering.tags or lookingFor.tags)
  if (tags.length > 0) {
    dbQuery.$or = [
      { "offering.tags": { $in: tags } },
      { "lookingFor.tags": { $in: tags } },
    ];
    // If search is also present, combine with AND
    if (search) {
      dbQuery.$and = [
        {
          $or: [
            { name: { $regex: search, $options: "i" } },
            { bio: { $regex: search, $options: "i" } },
          ],
        },
        {
          $or: [
            { "offering.tags": { $in: tags } },
            { "lookingFor.tags": { $in: tags } },
          ],
        },
      ];
      delete dbQuery.$or;
    }
  }

  try {
    const members = await Member.find(dbQuery)
      .select(
        "name pronouns timeZone avatar studio bio location socialLinks offering lookingFor privacy circle createdAt",
      )
      .sort({ createdAt: -1 })
      .lean();

    // Filter fields based on privacy settings
    const filteredMembers = members.map((member) => {
      const privacy = member.privacy || {};
      const filtered = {
        _id: member._id,
        name: member.name,
        circle: member.circle,
        createdAt: member.createdAt,
      };

      // Helper function to check if field should be visible
      const isVisible = (field) => {
        const privacySetting = privacy[field] || "members";
        if (privacySetting === "public") return true;
        if (privacySetting === "members" && isAuthenticated) return true;
        if (privacySetting === "private") return false;
        return false;
      };

      // Add fields based on privacy settings
      if (isVisible("avatar")) filtered.avatar = member.avatar;
      if (isVisible("pronouns")) filtered.pronouns = member.pronouns;
      if (isVisible("timeZone")) filtered.timeZone = member.timeZone;
      if (isVisible("studio")) filtered.studio = member.studio;
      if (isVisible("bio")) filtered.bio = member.bio;
      if (isVisible("location")) filtered.location = member.location;
      if (isVisible("socialLinks")) filtered.socialLinks = member.socialLinks;
      if (isVisible("offering")) filtered.offering = member.offering;
      if (isVisible("lookingFor")) filtered.lookingFor = member.lookingFor;

      return filtered;
    });

    // Get unique tags for filter options (from both offering and lookingFor)
    const allTags = members
      .flatMap((m) => [
        ...(m.offering?.tags || []),
        ...(m.lookingFor?.tags || []),
      ])
      .filter((tag, index, self) => self.indexOf(tag) === index)
      .sort();

    return {
      members: filteredMembers,
      totalCount: filteredMembers.length,
      filters: {
        availableTags: allTags,
      },
    };
  } catch (error) {
    console.error("Directory fetch error:", error);
    throw createError({
      statusCode: 500,
      message: "Failed to fetch member directory",
    });
  }
});