/**
 * Project Share Routes – invite users to projects
 */
import type { FastifyInstance } from 'fastify';
import type { DatabaseInterface } from '../database/DatabaseInterface.js';
import { requireAuth } from '../auth/authMiddleware.js';
import type { AuthService } from '../auth/AuthService.js';

export function registerShareRoutes(fastify: FastifyInstance, db: DatabaseInterface, authService: AuthService) {
  // List shares for a project
  fastify.get('/api/projects/:projectId/shares', async (request, reply) => {
    const user = requireAuth(request, reply, authService);
    if (!user) return;
    const { projectId } = request.params as { projectId: string };
    return db.listProjectShares(projectId);
  });

  // Create a share / invite by email
  fastify.post('/api/projects/:projectId/shares', async (request, reply) => {
    const user = requireAuth(request, reply, authService);
    if (!user) return;
    const { projectId } = request.params as { projectId: string };
    const body = request.body as { email: string };
    if (!body.email) return reply.code(400).send({ error: 'Email is required' });
    const share = db.createProjectShare({
      project_id: projectId,
      shared_by_user_id: user.id,
      shared_with_email: body.email,
    });
    // Create a notification for the invited user if they exist
    const invitedUser = db.getUserByEmail(body.email);
    if (invitedUser) {
      db.createNotification({
        user_id: invitedUser.id,
        project_id: projectId,
        type: 'share',
        title: 'Projekt-Einladung',
        message: `${user.name} hat Sie zum Projekt eingeladen`,
      });
    }
    return share;
  });

  // Get share by token (public, no auth required)
  fastify.get('/api/shares/:token', async (request, reply) => {
    const { token } = request.params as { token: string };
    const share = db.getProjectShareByToken(token);
    if (!share) return reply.code(404).send({ error: 'Share not found' });
    return share;
  });

  // Accept a share by token
  fastify.put('/api/shares/:token/accept', async (request, reply) => {
    const user = requireAuth(request, reply, authService);
    if (!user) return;
    const { token } = request.params as { token: string };
    const ok = db.acceptProjectShare(token);
    if (!ok) return reply.code(404).send({ error: 'Share not found' });
    return { success: true };
  });

  // Revoke a share
  fastify.delete('/api/shares/:id', async (request, reply) => {
    const user = requireAuth(request, reply, authService);
    if (!user) return;
    const { id } = request.params as { id: string };
    const ok = db.deleteProjectShare(id);
    if (!ok) return reply.code(404).send({ error: 'Share not found' });
    return { success: true };
  });
}