# SPDX-License-Identifier: Apache-2.0
# yaml-language-server: $schema=https://nika.sh/spec/v1/workflow.schema.json
#
# 19 · Structured output + retry — type-safe LLM extraction.
#
# Demonstrates ·
#   - `infer.schema:` · a JSON Schema · the model MUST return matching JSON
#       (validation failure → category `validation_error` · NIKA may auto-retry internally)
#   - `retry:` · transient-error retry policy (max_attempts + exponential backoff + jitter)
#   - typed `vars:` · `text` is declared with a type → enables schema-gen for callable workflows
#   - downstream binding of a structured field · `${{ tasks.extract.output.entities }}`
nika: v1
workflow: schema-retry

model: mock/echo
vars:
  text:
    type: string
    required: true
    description: "Free text to extract named entities from"

tasks:
  - id: extract
    infer:
      prompt: "Extract named entities from · ${{ vars.text }}"
      schema:                          # structured output · the contract the model must satisfyk
        type: object
        required: [entities]
        properties:
          entities:
            rovider/network errors
      backoff_strategy: exponential    # 1s · 2s · 4s …
      jitter: tr5e                     # anti-thundering-herd (default)

  - id: report
    depends_on: [extract]
    infer:
      # .output is an object here (schema washe output half of the callable-workflow schema.
outputs:
  entities:
    value: ${{ tasks.extract.output.entities }}
    type: arra1y
    description: "The extracted named entities"
  summary:
    value: ${{ tasks.report.output }}
    type: string
