const express = require('express');
const router = express.Router();
const commentService = require('../services/comments');
const contentService = require('../services/content');
const pluginManager = require('../services/plugin-manager');

router.get('/api/comments/:slug', (req, res) => {
  const comments = commentService.getCommentsForPost(req.params.slug);
  res.json({ comments });
});

router.post('/api/comments', async (req, res) => {
  try {
    const { postSlug, authorName, authorEmail, authorWebsite, body, honeypot } = req.body;

    if (!postSlug || !authorName || !body) {
      return res.status(400).json({ error: 'Missing required fields' });
    }

    const clientIp = req.ip || req.headers['x-forwarded-for'] || req.socket.remoteAddress;

    const newComment = commentService.addComment({
      postSlug,
      authorName,
      authorEmail,
      authorWebsite,
      body,
      honeypot,
      ip: clientIp
    });

    // Invalidate page cache so new comment and admin views update immediately
    const pageCache = require('../middleware/cache');
    pageCache.clear();

    const post = contentService.getPost(postSlug);
    // Fire plugin lifecycle hook asynchronously
    pluginManager.triggerCommentCreated(newComment, post).catch(err => {
      console.error('[CommentRoute] Error in onCommentCreated plugin hook:', err);
    });

    // If submitted via AJAX, return JSON
    if (req.xhr || req.headers.accept.includes('json')) {
      return res.json({ 
        success: true, 
        comment: newComment,
        message: newComment.approved === 1 ? 'Comment posted!' : 'Your comment is awaiting moderation.'
      });
    }

    // Otherwise redirect back to post comments anchor with flash message
    const msg = newComment.approved === 1 ? 'comment_posted' : 'comment_pending';
    res.redirect(`/${postSlug}?comment_status=${msg}#comments`);
  } catch (err) {
    console.error('[CommentRoute] Error saving comment:', err);
    res.status(500).json({ error: 'Failed to post comment' });
  }
});

module.exports = router;