openapi: 3.1.0
info:
  title: fete API
  description: Privacy-focused event announcements and RSVPs
  version: 0.1.0
  license:
    name: GPL-3.0-or-later
    identifier: GPL-3.0-or-later

servers:
  - url: /api

paths:
  /events:
    post:
      operationId: createEvent
      summary: Create a new event
      tags:
        - events
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: "#/components/schemas/CreateEventRequest"
      responses:
        "201":
          description: Event created successfully
          content:
            application/json:
              schema:
                $ref: "#/components/schemas/CreateEventResponse"
        "400":
          description: Validation failed
          content:
            application/problem+json:
              schema:
                $ref: "#/components/schemas/ValidationProblemDetail"

components:
  schemas:
    CreateEventRequest:
      type: object
      required:
        - title
        - dateTime
        - expiryDate
      properties:
        title:
          type: string
          minLength: 1
          maxLength: 200
        description:
          type: string
          maxLength: 2000
        dateTime:
          type: string
          format: date-time
          description: Event date and time with UTC offset (ISO 8601)
          example: "2026-03-15T20:00:00+01:00"
        location:
          type: string
          maxLength: 500
        expiryDate:
          type: string
          format: date
          description: Date after which event data is deleted. Must be in the future.
          example: "2026-06-15"

    CreateEventResponse:
      type: object
      required:
        - eventToken
        - organizerToken
        - title
        - dateTime
        - expiryDate
      properties:
        eventToken:
          type: string
          format: uuid
          description: Public token for the event URL
        organizerToken:
          type: string
          format: uuid
          description: Secret token for organizer access
        title:
          type: string
        dateTime:
          type: string
          format: date-time
        expiryDate:
          type: string
          format: date

    ProblemDetail:
      type: object
      properties:
        type:
          type: string
          format: uri
          default: "about:blank"
        title:
          type: string
        status:
          type: integer
        detail:
          type: string
        instance:
          type: string
          format: uri
      additionalProperties: true

    ValidationProblemDetail:
      allOf:
        - $ref: "#/components/schemas/ProblemDetail"
        - type: object
          properties:
            fieldErrors:
              type: array
              items:
                type: object
                required:
                  - field
                  - message
                properties:
                  field:
                    type: string
                  message:
                    type: string