Lovableの課金モデル

import DodoPayments from 'dodopayments';

const client = new DodoPayments({
  bearerToken: process.env.DODO_PAYMENTS_API_KEY,
});

const session = await client.checkoutSessions.create({
  product_cart: [
    { product_id: 'prod_lovable_pro', quantity: 1 }
  ],
  customer: { email: 'user@example.com' },
  return_url: 'https://lovable.dev/dashboard'
});

await client.usageEvents.ingest({
  events: [{
    event_id: `compute_${Date.now()}`,
    customer_id: 'cust_123',
    event_name: 'cloud.compute_seconds',
    timestamp: new Date().toISOString(),
    metadata: {
      compute_seconds: 3600,
      project_id: 'proj_abc'
    }
  }]
});

// Example cron job logic (pseudo-code)
// Every day at midnight UTC:
// 1. Reset 'daily_bonus_used' to 0 for all users in your DB

// When a user sends a message:
async function handleMessage(userId: string) {
  const user = await db.users.findUnique({ where: { id: userId } });
  
  if (user.daily_bonus_used < 5) {
    // Use daily bonus
    await db.users.update({
      where: { id: userId },
      data: { daily_bonus_used: { increment: 1 } }
    });
    // Track for analytics but don't deduct from Dodo credits yet
    await client.usageEvents.ingest({
      events: [{
        event_id: `msg_bonus_${Date.now()}`,
        customer_id: userId,
        event_name: 'ai.message.bonus',
        timestamp: new Date().toISOString(),
        metadata: { type: 'daily_bonus' }
      }]
    });
  } else {
    // Deduct from Dodo credit entitlement
    await client.usageEvents.ingest({
      events: [{
        event_id: `msg_${Date.now()}`,
        customer_id: userId,
        event_name: 'ai.message',
        timestamp: new Date().toISOString(),
        metadata: { type: 'subscription_credit' }
      }]
    });
  }
}

await client.usageEvents.ingest({
  events: [{
    event_id: `msg_${Date.now()}`,
    customer_id: 'cust_123',
    event_name: 'ai.message',
    timestamp: new Date().toISOString(),
    metadata: {
      content_length: 450,
      project_id: 'proj_abc',
      feature_type: 'editor'
    }
  }]
});

import DodoPayments from 'dodopayments';
import express from 'express';

const app = express();
app.use(express.raw({ type: 'application/json' }));

const client = new DodoPayments({
  bearerToken: process.env.DODO_PAYMENTS_API_KEY,
  webhookKey: process.env.DODO_PAYMENTS_WEBHOOK_KEY,
});

app.post('/webhooks/dodo', async (req, res) => {
  try {
    const event = client.webhooks.unwrap(req.body.toString(), {
      headers: {
        'webhook-id': req.headers['webhook-id'] as string,
        'webhook-signature': req.headers['webhook-signature'] as string,
        'webhook-timestamp': req.headers['webhook-timestamp'] as string,
      },
    });

    if (event.type === 'credit.balance_low') {
      const { customer_id, available_balance } = event.data;
      await notifyUser(customer_id, `Your balance is low: ${available_balance} messages left.`);
    }

    res.json({ received: true });
  } catch (error) {
    res.status(401).json({ error: 'Invalid signature' });
  }
});