arazzo: 1.0.1
info:
  title: Microsoft Excel Read, Write, and Verify a Cell Range
  summary: Open a persisting session, read a range, write new values, and read the range back.
  description: >-
    The core read-modify-write loop of the Graph Excel API. A persisting
    workbook session is opened first so the write is saved to the file and so
    the read and the write are billed against one session rather than two cold
    calls. The range is read before the write to capture the prior values, the
    new values are patched in, and the range is read back to prove the write
    landed. Every step spells out its request inline so the flow can be read and
    executed without opening the underlying OpenAPI.
  version: 1.0.0
sourceDescriptions:
- name: excelGraphApi
  url: ../openapi/microsoft-excel-graph-api.yaml
  type: openapi
workflows:
- workflowId: session-range-update
  summary: Read a cell range, overwrite its values in a session, and verify the result.
  description: >-
    Captures the prior contents of an A1-notation range, patches new values into
    it inside a persisting session, then re-reads the range to confirm the
    committed state.
  inputs:
    type: object
    required:
    - itemId
    - worksheetIdOrName
    - address
    - values
    properties:
      itemId:
        type: string
        description: The drive item id of the workbook file.
      worksheetIdOrName:
        type: string
        description: The worksheet holding the range (e.g. "Sheet1").
      address:
        type: string
        description: The range address in A1 notation (e.g. "A1:B2").
      values:
        type: array
        description: >-
          A two-dimensional array of cell values whose shape must match the
          target range exactly; Excel rejects a mismatched write.
        items:
          type: array
          items: {}
  steps:
  - stepId: openSession
    description: >-
      Open a workbook session with persistChanges true so the values written
      later in this flow are saved back to the stored workbook.
    operationId: createWorkbookSession
    parameters:
    - name: item-id
      in: path
      value: $inputs.itemId
    requestBody:
      contentType: application/json
      payload:
        persistChanges: true
    successCriteria:
    - condition: $statusCode == 201
    outputs:
      sessionId: $response.body#/id
  - stepId: readBefore
    description: >-
      Read the range before writing so the caller retains the prior values and
      can confirm the target range has the row and column count it expects.
    operationId: getRange
    parameters:
    - name: item-id
      in: path
      value: $inputs.itemId
    - name: worksheet-id-or-name
      in: path
      value: $inputs.worksheetIdOrName
    - name: address
      in: path
      value: $inputs.address
    - name: workbook-session-id
      in: header
      value: $steps.openSession.outputs.sessionId
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      priorValues: $response.body#/values
      rowCount: $response.body#/rowCount
      columnCount: $response.body#/columnCount
  - stepId: writeValues
    description: >-
      Patch the supplied two-dimensional values into the range. Only values are
      sent, so any existing number formats on the cells are left intact.
    operationId: updateRange
    parameters:
    - name: item-id
      in: path
      value: $inputs.itemId
    - name: worksheet-id-or-name
      in: path
      value: $inputs.worksheetIdOrName
    - name: address
      in: path
      value: $inputs.address
    - name: workbook-session-id
      in: header
      value: $steps.openSession.outputs.sessionId
    requestBody:
      contentType: application/json
      payload:
        values: $inputs.values
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      writtenAddress: $response.body#/address
      writtenValues: $response.body#/values
  - stepId: readBack
    description: >-
      Re-read the same range to verify the committed values, including the text
      representation Excel rendered for each cell.
    operationId: getRange
    parameters:
    - name: item-id
      in: path
      value: $inputs.itemId
    - name: worksheet-id-or-name
      in: path
      value: $inputs.worksheetIdOrName
    - name: address
      in: path
      value: $inputs.address
    - name: workbook-session-id
      in: header
      value: $steps.openSession.outputs.sessionId
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      confirmedValues: $response.body#/values
      confirmedText: $response.body#/text
  outputs:
    sessionId: $steps.openSession.outputs.sessionId
    priorValues: $steps.readBefore.outputs.priorValues
    confirmedValues: $steps.readBack.outputs.confirmedValues