All files / docs spec.js

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const fs = require('fs')
const path = require('path')
 
// Read the spec at cold-start time — it is bundled with the Lambda code asset
let specContent
 
const getSpec = () => {
  if (!specContent) {
    // When bundled from project root:
    //   __dirname = /var/task/infrastructure/lambda/docs
    //   api-definition.yaml is at /var/task/api-definition.yaml
    const raw = fs.readFileSync(path.join(__dirname, '../../../api-definition.yaml'), 'utf-8')
 
    // Override the servers list to only show the current environment so that
    // Swagger UI does not propose a choice between prod and dev.
    // We replace the block directly in the raw YAML — no parser needed.
    const apiBaseUrl = process.env.API_BASE_URL
    if (apiBaseUrl) {
      specContent = raw.replace(
        /^servers:[\s\S]*?(?=^\w)/m,
        `servers:\n  - url: ${apiBaseUrl}\n    description: Current environment\n`
      )
    } else {
      specContent = raw
    }
  }
  return specContent
}
 
exports.handler = async () => {
  try {
    return {
      statusCode: 200,
      headers: {
        'Content-Type': 'application/yaml',
        'Access-Control-Allow-Origin': '*',
        'Cache-Control': 'public, max-age=300'
      },
      body: getSpec()
    }
  } catch (error) {
    console.error('Error serving OpenAPI spec:', error)
    return {
      statusCode: 500,
      headers: { 'Content-Type': 'application/json', 'Access-Control-Allow-Origin': '*' },
      body: JSON.stringify({ error: 'Failed to load API spec' })
    }
  }
}