bus.yaml

id: nanoblog
version: 0.0.1
spec: apex.axdl

initializers:
  blogdb:
    uses: nanobus.migrate.postgres/v1
    with:
      dataSource: "${env:BLOG_DB}"
      directory: migrations/

authorization:
  blogs.v1.Blogs:
    postBlog:
      unauthenticated: true
    getFeed:
      unauthenticated: true
    getBlog:
      unauthenticated: true
    deleteBlog:
      unauthenticated: true

transports:
  http:
    uses: nanobus.transport.http.server/v1
    with:
      address: ":8080"
      middleware:
        - uses: nanobus.transport.http.cors/v0
          with:
            allowedMethods:
              - HEAD
              - GET
              - POST
              - PUT
              - PATCH
              - DELETE
            allowCredentials: true
      routers:
        - uses: nanobus.transport.http.rest/v1
          with:
            documentation:
              swaggerUI: true
              postman: true
              restClient: true

interfaces:
  blogs.v1.Blogs:
    postBlog:
      steps:
        - name: Post a blog
          uses: "@postgres/query_one"
          with:
            resource: blogdb
            sql: |-
              INSERT INTO blog (user_id, title, body, time)
              VALUES ($1, $2, $3, now())
              RETURNING *
            args:
              - input.userId
              - input.title
              - input.body
    getFeed:
      steps:
        - name: Get blog timeline for multiple users
          uses: "@postgres/query"
          with:
            resource: blogdb
            sql: |-
              SELECT * FROM blog
              WHERE (time < $1 OR $1 IS NULL)
              ORDER BY time DESC
              LIMIT $2
            args:
              - input.before
              - input.limit
    getBlog:
      steps:
        - name: Get a single blog
          uses: "@postgres/query_one"
          with:
            resource: blogdb
            sql: |-
              SELECT * FROM blog
              WHERE id = $1
            args:
              - input.id
    deleteBlog:
      steps:
        - name: Remove a blog post
          uses: "@postgres/query_one"
          with:
            resource: blogdb
            sql: |-
              DELETE FROM blog
              WHERE id = $1
                AND user_id = $2
              RETURNING *
            args:
              - input.id
              - input.userId
    editBlog:
      steps:
        - name: Edit a blog post
          uses: "@postgres/query_one"
          with:
            resource: blogdb
            sql: |-
              UPDATE blog
              SET body = $2
              WHERE id = $1
              RETURNING *
            args:
              - input.id
              - input.body