openapi: 3.0.3
info:
  title: ETD@IISc DSpace REST Bitstreams Collections API
  description: Read-only machine-readable REST API exposed by the ETD@IISc Electronic Theses and Dissertations repository, which runs on DSpace 6. The API serves the repository's Community / Collection / Item / Bitstream hierarchy as JSON. Paths and object schemas in this document were confirmed live against https://etd.iisc.ac.in/rest during enrichment (verb-less GET endpoints returning real JSON). Only endpoints and fields actually observed or part of the documented DSpace 6 REST contract are included. Write/authenticated endpoints are out of scope for this public read profile.
  version: '6.0'
  contact:
    name: API Evangelist
    url: https://etd.iisc.ac.in/
servers:
- url: https://etd.iisc.ac.in/rest
  description: ETD@IISc DSpace 6 REST API
tags:
- name: Collections
paths:
  /collections:
    get:
      tags:
      - Collections
      summary: List collections
      description: Returns the array of collections in the repository.
      operationId: listCollections
      parameters:
      - $ref: '#/components/parameters/expand'
      - $ref: '#/components/parameters/limit'
      - $ref: '#/components/parameters/offset'
      responses:
        '200':
          description: A list of collection objects.
          content:
            application/json:
              schema:
                type: array
                items:
                  $ref: '#/components/schemas/Collection'
  /collections/{collectionId}:
    get:
      tags:
      - Collections
      summary: Get a collection
      operationId: getCollection
      parameters:
      - $ref: '#/components/parameters/collectionId'
      - $ref: '#/components/parameters/expand'
      responses:
        '200':
          description: A single collection object.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Collection'
        '404':
          $ref: '#/components/responses/NotFound'
components:
  responses:
    NotFound:
      description: The requested resource was not found.
  parameters:
    expand:
      name: expand
      in: query
      description: Comma-separated list of sub-resources to inline in the response (for example metadata,bitstreams,collections,subcommunities).
      required: false
      schema:
        type: string
    limit:
      name: limit
      in: query
      description: Maximum number of records to return.
      required: false
      schema:
        type: integer
        default: 100
    collectionId:
      name: collectionId
      in: path
      required: true
      description: UUID of the collection.
      schema:
        type: string
        format: uuid
    offset:
      name: offset
      in: query
      description: Number of records to skip for pagination.
      required: false
      schema:
        type: integer
        default: 0
  schemas:
    Community:
      allOf:
      - $ref: '#/components/schemas/DSpaceObject'
      - type: object
        properties:
          logo:
            nullable: true
            $ref: '#/components/schemas/Bitstream'
          parentCommunity:
            nullable: true
            $ref: '#/components/schemas/Community'
          copyrightText:
            type: string
          introductoryText:
            type: string
          shortDescription:
            type: string
          sidebarText:
            type: string
          countItems:
            type: integer
          collections:
            type: array
            items:
              $ref: '#/components/schemas/Collection'
          subcommunities:
            type: array
            items:
              $ref: '#/components/schemas/Community'
    Bitstream:
      allOf:
      - $ref: '#/components/schemas/DSpaceObject'
      - type: object
        properties:
          bundleName:
            type: string
          description:
            type: string
            nullable: true
          format:
            type: string
          mimeType:
            type: string
          sizeBytes:
            type: integer
            format: int64
          parentObject:
            nullable: true
            $ref: '#/components/schemas/Item'
          retrieveLink:
            type: string
            description: Relative path to download the file content.
          checkSum:
            type: object
            properties:
              value:
                type: string
              checkSumAlgorithm:
                type: string
          sequenceId:
            type: integer
          policies:
            type: array
            nullable: true
            items:
              type: object
    Item:
      allOf:
      - $ref: '#/components/schemas/DSpaceObject'
      - type: object
        properties:
          lastModified:
            type: string
            description: Timestamp of the last modification.
          archived:
            type: boolean
          withdrawn:
            type: boolean
          parentCollection:
            nullable: true
            $ref: '#/components/schemas/Collection'
          parentCollectionList:
            type: array
            items:
              $ref: '#/components/schemas/Collection'
          metadata:
            type: array
            items:
              $ref: '#/components/schemas/MetadataEntry'
          bitstreams:
            type: array
            items:
              $ref: '#/components/schemas/Bitstream'
    DSpaceObject:
      type: object
      description: Common base fields shared by DSpace REST resources.
      properties:
        uuid:
          type: string
          format: uuid
        name:
          type: string
        handle:
          type: string
          description: Persistent handle identifier (for example 2005/141).
        type:
          type: string
        link:
          type: string
          description: Relative REST path to this resource.
        expand:
          type: array
          items:
            type: string
    Collection:
      allOf:
      - $ref: '#/components/schemas/DSpaceObject'
      - type: object
        properties:
          logo:
            nullable: true
            $ref: '#/components/schemas/Bitstream'
          parentCommunity:
            nullable: true
            $ref: '#/components/schemas/Community'
          parentCommunityList:
            type: array
            items:
              $ref: '#/components/schemas/Community'
          items:
            type: array
            items:
              $ref: '#/components/schemas/Item'
          license:
            type: string
            nullable: true
          copyrightText:
            type: string
          introductoryText:
            type: string
          shortDescription:
            type: string
          sidebarText:
            type: string
          numberItems:
            type: integer
    MetadataEntry:
      type: object
      description: A single Dublin Core metadata field on an item.
      properties:
        key:
          type: string
          description: Qualified DC key (for example dc.contributor.advisor).
        value:
          type: string
        language:
          type: string
          nullable: true
        element:
          type: string
        qualifier:
          type: string
          nullable: true
        schema:
          type: string