import express from 'express';
import axios from 'axios';
import { authenticateApiKey, apiLimiter } from '../middleware/midware.js';
import { Federation } from '../models.js';
const FedsRoutes = express.Router();

/**
 * @swagger
 * /api/v2/federation/newfed:
 *   post:
 *     summary: Create a new federation
 *     tags: [Federation]
 *     description: Creates a new federation with a unique name and owner.
 *     security:
 *       - apiKeyAuth: []
 *     requestBody:
 *       required: true
 *       content:
 *         application/json:
 *           schema:
 *             type: object
 *             properties:
 *               name:
 *                 type: string
 *                 description: The unique name of the federation.
 *               owner:
 *                 type: integer
 *                 description: The user ID of the federation owner.
 *     parameters:
 *       - in: header
 *         name: x-api-key
 *         required: true
 *         description: API key for authentication.
 *         schema:
 *           type: string
 *     responses:
 *       200:
 *         description: Federation created successfully.
 *         content:
 *           application/json:
 *             schema:
 *               type: object
 *               properties:
 *                 message:
 *                   type: string
 *                   example: Federation created successfully
 *                 federation:
 *                   type: object
 *                   properties:
 *                     name:
 *                       type: string
 *                     owner:
 *                       type: integer
 *                     banned_users:
 *                       type: array
 *                       items:
 *                         type: integer
 *                     sub_federations:
 *                       type: array
 *                       items:
 *                         type: string
 *       400:
 *         description: Federation already exists or missing parameters.
 *       500:
 *         description: Internal server error.
 */
FedsRoutes.post("/api/v2/federation/newfed", authenticateApiKey, apiLimiter, async (req, res) => {
  try {
    const { name, owner } = req.body;
    
    const existing = await Federation.findOne({ name });
    if (existing) return res.status(400).json({ error: "Federation already exists" });

    const federation = new Federation({ name, owner, banned_users: [], sub_federations: [] });
    await federation.save();

    res.json({ message: "Federation created successfully", federation });
  } catch (err) {
    res.status(500).json({ error: err.message });
  }
});

/**
 * @swagger
 * /api/v2/federation/subfed:
 *   post:
 *     summary: Add a sub-federation
 *     tags: [Federation]
 *     description: Adds a federation as a sub-federation under a parent federation.
 *     security:
 *       - apiKeyAuth: []
 *     requestBody:
 *       required: true
 *       content:
 *         application/json:
 *           schema:
 *             type: object
 *             properties:
 *               parent_uuid:
 *                 type: string
 *                 description: UUID of the parent federation.
 *               child_uuid:
 *                 type: string
 *                 description: UUID of the child federation to be added as a sub-federation.
 *     parameters:
 *       - in: header
 *         name: x-api-key
 *         required: true
 *         description: API key for authentication.
 *         schema:
 *           type: string
 *     responses:
 *       200:
 *         description: Sub-federation added successfully.
 *         content:
 *           application/json:
 *             schema:
 *               type: object
 *               properties:
 *                 message:
 *                   type: string
 *                   example: "Federation ChildName is now a sub-federation of ParentName"
 *       404:
 *         description: Parent or child federation not found.
 *       500:
 *         description: Internal server error.
 */
FedsRoutes.post("/api/v2/federation/subfed", authenticateApiKey, apiLimiter, async (req, res) => {
  try {
    const { parent_uuid, child_uuid } = req.body;

    const parent = await Federation.findOne({ uuid: parent_uuid });
    const child = await Federation.findOne({ uuid: child_uuid });

    if (!parent || !child) return res.status(404).json({ error: "Federation not found" });

    if (!parent.sub_federations.includes(child.uuid)) {
      parent.sub_federations.push(child.uuid);
      await parent.save();
    }

    res.json({ message: `Federation ${child.name} is now a sub-federation of ${parent.name}` });
  } catch (err) {
    res.status(500).json({ error: err.message });
  }
});

FedsRoutes.get("/api/v1/federation/getfed/:uuid", authenticateApiKey, apiLimiter, async (req, res) => {
  try {
    const federation = await Federation.findOne({ uuid: req.params.uuid });
    
    if (!federation) return res.status(404).json({ error: "Federation not found" });

    const subFeds = await Federation.find({ uuid: { $in: federation.sub_federations } });

    res.json({ federation, sub_federations: subFeds });
  } catch (err) {
    res.status(500).json({ error: err.message });
  }
});

FedsRoutes.post('/api/v2/federation/unban', authenticateApiKey, async (req, res) => {
    try {
        const { name, user_id } = req.body;

        if (!name || !user_id || isNaN(user_id)) {
            return res.status(400).json({ error: "Federation name and valid user ID required" });
        }

        const federation = await Federation.findOne({ name });

        if (!federation) {
            return res.status(404).json({ error: "Federation not found." });
        }

        federation.banned_users = federation.banned_users.filter(id => Number(id) !== Number(user_id));
        await federation.save();

        await Federation.updateMany(
            { uuid: { $in: federation.sub_federations } },
            { $pull: { banned_users: Number(user_id) } }
        );

        res.json({ success: true, message: `User ${user_id} unbanned from ${name} and its sub-federations.` });
    } catch (error) {
        res.status(500).json({ error: `Failed to unban user: ${error.message}` });
    }
});


FedsRoutes.post("/api/v2/federation/ban", authenticateApiKey, apiLimiter, async (req, res) => {
    try {
        const { federation_uuid, user_id } = req.body;

        if (!federation_uuid || !user_id || isNaN(user_id)) {
            return res.status(400).json({ error: "Federation UUID and valid user ID required" });
        }

        const federation = await Federation.findOne({ uuid: federation_uuid });

        if (!federation) return res.status(404).json({ error: "Federation not found" });

        if (!federation.banned_users.includes(Number(user_id))) {
            federation.banned_users.push(Number(user_id));
            await federation.save();
        }
  
        await Federation.updateMany(
            { uuid: { $in: federation.sub_federations } },
            { $addToSet: { banned_users: Number(user_id) } }
        );

        res.json({ message: `User ${user_id} banned in ${federation.name} and all its sub-federations.` });
    } catch (err) {
        res.status(500).json({ error: err.message });
    }
});


export { FedsRoutes };