// SPDX-License-Identifier: LicenseRef-ConusAI-Template-1.0
// Follow the offered step using a public gateway adapter with an in-process transport.
// No network/provider call and no SDK-private or transitive TanStack testing import.
import { conusaiText } from "@conusai-sdk/ai/tanstack"

export function planFollower() {
  return conusaiText("scripted-agent-test", {
    apiUrl: "https://gateway.example.invalid/api",
    token: "synthetic-test-token",
    maxRetries: 0,
    fetch: async (_input, init) => {
      const body = JSON.parse(String(init?.body ?? "{}")) as { tool_choice?: { function?: { name?: string } } }
      const step = body.tool_choice?.function?.name
      const delta =
        step === undefined
          ? { role: "assistant", content: "Done." }
          : {
              role: "assistant",
              tool_calls: [
                { index: 0, id: `call-${step}`, type: "function", function: { name: step, arguments: "{}" } },
              ],
            }
      const chunk = {
        id: "synthetic-completion",
        object: "chat.completion.chunk",
        created: 1,
        model: "scripted-agent-test",
        choices: [{ index: 0, delta, finish_reason: step === undefined ? "stop" : "tool_calls" }],
      }
      return new Response(`data: ${JSON.stringify(chunk)}\n\ndata: [DONE]\n\n`, {
        headers: { "content-type": "text/event-stream" },
      })
    },
  })
}