swaggerConfig.js

import swaggerJsdoc from 'swagger-jsdoc'
import swaggerUi from 'swagger-ui-express'

const options = {
  definition: {
    openapi: '3.0.0',
    info: {
        title: 'E-commerce API', // Title of your API
        version: '1.0.0', // Version of your API
        description: 'API for an e-commerce platform', // Description of your API
    },
    components: {
      securitySchemes: {
        BearerAuth: {
          type: 'http',
          scheme: 'bearer',
          bearerFormat: 'JWT',
        },
      },
    },
    security: [{ BearerAuth: [] }],
  },
  // looks for configuration in specified directories
  apis: ['./routes/*.js'],
}

const swaggerSpec = swaggerJsdoc(options)

function swaggerDocs(app, port) {
  // Swagger Page
  app.use('/docs', swaggerUi.serve, swaggerUi.setup(swaggerSpec))

  // Documentation in JSON format
  app.get('/docs.json', (req, res) => {
    res.setHeader('Content-Type', 'application/json')
    res.send(swaggerSpec)
  })
}

export default swaggerDocs