import { Router } from 'express';
import { paywallService } from '../services/paywall.js';
import { accessService } from '../services/access.js';

const router = Router();

// Get public paywall data for hosted page
router.get('/:slugOrId', async (req, res, next) => {
  try {
    const { slugOrId } = req.params;
    const paywall = await paywallService.findBySlugOrId(slugOrId);

    // Check if user already has access
    const tokenId = req.cookies?.[`token_id_${paywall.id}`];
    let hasAccess = false;
    let accessInfo = null;

    if (tokenId) {
      const accessResult = await accessService.checkAccessByCookie(tokenId, paywall.id);
      hasAccess = accessResult.hasAccess;
      if (hasAccess) {
        accessInfo = {
          originalUrl: accessResult.paywall.originalUrl,
          expiresAt: accessResult.accessGrant?.expiresAt,
        };
      }
    }

    res.json({
      paywall: {
        id: paywall.id,
        title: paywall.title,
        description: paywall.description,
        coverImageUrl: paywall.coverImageUrl,
        priceSats: paywall.priceSats,
        previewMode: paywall.previewMode,
        previewContent: paywall.previewContent,
        originalUrlType: paywall.originalUrlType,
        customSuccessMessage: paywall.customSuccessMessage,
        customBranding: paywall.customBranding,
        // Only include original URL if user has access
        originalUrl: hasAccess ? paywall.originalUrl : null,
        creator: paywall.creator,
      },
      hasAccess,
      accessInfo,
    });
  } catch (error) {
    next(error);
  }
});

// Get paywall for embed (checks origin)
router.get('/:id/embed-data', async (req, res, next) => {
  try {
    const { id } = req.params;
    const paywall = await paywallService.findById(id);

    // Check origin restrictions
    const origin = req.get('origin') || req.get('referer');
    if (paywall.allowedEmbedOrigins && paywall.allowedEmbedOrigins.length > 0) {
      const allowed = paywall.allowedEmbedOrigins.some(allowedOrigin => {
        if (!origin) return false;
        return origin.includes(allowedOrigin);
      });

      if (!allowed && origin) {
        return res.status(403).json({
          error: 'Embedding not allowed from this origin',
        });
      }
    }

    if (!paywall.allowEmbed) {
      return res.status(403).json({
        error: 'Embedding is disabled for this paywall',
      });
    }

    res.json({
      id: paywall.id,
      title: paywall.title,
      description: paywall.description,
      coverImageUrl: paywall.coverImageUrl,
      priceSats: paywall.priceSats,
      previewMode: paywall.previewMode,
      previewContent: paywall.previewContent,
      customBranding: paywall.customBranding,
      creator: paywall.creator,
    });
  } catch (error) {
    next(error);
  }
});

export default router;