orca/src/shared/structured-agent-session-create.test.ts

import { ResumeSource } from './rpc-contract/structured-agent-session-params'
import { STRUCTURED_AGENT_SESSION_CLI_SOURCE_RUNTIME_CAPABILITY } from './structured-agent-session-surface-capabilities'
import { describe, expect, it } from 'vitest'
import { RUNTIME_CAPABILITIES } from './protocol-version'
import { AGENT_SESSION_CREATE_MESSAGE_RUNTIME_CAPABILITY } from './agent-session-create-capabilities'

import {
  structuredAgentSessionCreateParams,
  type StructuredAgentSessionFirstMessage,
  type StructuredAgentSessionResumeSource
} from './structured-agent-session-create'
import {
  structuredAgentSessionCreateFingerprint,
  structuredAgentSessionPayloadFingerprint
} from './structured-agent-session-mutation'

const SESSION_ID = 'codex_11111111_2222_3333_4444_555555555555'
const RESUME = { providerSessionId: 'thread-abc' }

/** Distinct per call so two envelopes never share an operation id by accident. */
let uuidCounter = 0
function nextUuid(): string {
  uuidCounter += 1
  return `00000000-0000-4000-8000-${String(uuidCounter).padStart(12, '0')}`
}

function createParams(
  overrides: {
    resumeFrom?: StructuredAgentSessionResumeSource
    tabId?: string
    firstMessage?: StructuredAgentSessionFirstMessage
    options?: Record<string, string>
  } = {}
) {
  return structuredAgentSessionCreateParams({
    sessionId: SESSION_ID,
    worktree: 'id:repo-1::/repo/orca',
    agent: 'codex',
    ...overrides,
    randomUuid: nextUuid,
    now: 1_800_000_000_000
  })
}

describe('structured agent session create params', () => {
  it('fingerprints the first message identity, content and opening option picks', () => {
    const firstMessage: StructuredAgentSessionFirstMessage = {
      clientMessageId: 'message-1',
      body: { kind: 'message', role: 'user', blocks: [{ type: 'text', text: 'opening text' }] }
    }
    const first = createParams({ firstMessage, options: { model: 'picked-model' } })
    expect(first.firstMessage).toEqual(firstMessage)
    expect(first.options).toEqual({ model: 'picked-model' })
    expect(first.envelope.payloadFingerprint).toBe(
      createParams({ firstMessage, options: { model: 'picked-model' } }).envelope.payloadFingerprint
    )
    for (const changed of [
      createParams(),
      createParams({
        firstMessage: { ...firstMessage, clientMessageId: 'message-2' },
        options: { model: 'picked-model' }
      }),
      createParams({
        firstMessage: {
          ...firstMessage,
          body: { ...firstMessage.body, blocks: [{ type: 'text', text: 'different text' }] }
        },
        options: { model: 'picked-model' }
      }),
      createParams({ firstMessage, options: { model: 'other-model' } })
    ]) {
      expect(changed.envelope.payloadFingerprint).not.toBe(first.envelope.payloadFingerprint)
    }
    expect(RUNTIME_CAPABILITIES).toContain(AGENT_SESSION_CREATE_MESSAGE_RUNTIME_CAPABILITY)
    expect(AGENT_SESSION_CREATE_MESSAGE_RUNTIME_CAPABILITY).toBe('agentSession.create.message.v1')
  })

  it('separates an adopting create from a blank one and from another row', () => {
    const blank = createParams().envelope.payloadFingerprint
    const adopted = createParams({ resumeFrom: RESUME }).envelope.payloadFingerprint
    const otherRow = createParams({
      resumeFrom: { providerSessionId: 'thread-other' }
    }).envelope.payloadFingerprint

    expect(adopted).not.toBe(blank)
    expect(otherRow).not.toBe(adopted)
  })

  it('leaves a blank create byte-identical to the pre-resume digest', () => {
    // Pin the legacy no-resume digest; new fields must not break mixed-version create fingerprints.
    expect(createParams().envelope.payloadFingerprint).toBe(
      structuredAgentSessionPayloadFingerprint({
        method: 'agentSession.create',
        sessionId: SESSION_ID,
        fields: { worktree: 'id:repo-1::/repo/orca', agent: 'codex' }
      })
    )
    expect(createParams().envelope.payloadFingerprint).toBe(
      '56cb15e22414c0f62fd89d77d00d2d6a0a422f16e95edee154fb8b5bf53fbbc3'
    )
  })
})

describe('the tab id a create reserves', () => {
  it('rides the params and the fingerprint together', () => {
    const params = createParams({ tabId: 'tab-1' })

    expect(params.tabId).toBe('tab-1')
    expect(params.envelope.payloadFingerprint).toBe(
      structuredAgentSessionCreateFingerprint({
        sessionId: SESSION_ID,
        worktree: 'id:repo-1::/repo/orca',
        agent: 'codex',
        tabId: 'tab-1'
      })
    )
    // The declared digest covers the tab; the host still replays a retry on its attach fingerprint.
    expect(params.envelope.payloadFingerprint).not.toBe(createParams().envelope.payloadFingerprint)
  })
})

it('negotiates a strict pane identity and includes it in the create fingerprint without accepting paths', () => {
  const source = {
    providerSessionId: 'thread-abc',
    cliSource: { workspaceId: 'folder', paneKey: 'tab:leaf' }
  }
  expect(RUNTIME_CAPABILITIES).toContain(STRUCTURED_AGENT_SESSION_CLI_SOURCE_RUNTIME_CAPABILITY)
  expect(ResumeSource.parse(source)).toEqual(source)
  expect(ResumeSource.safeParse({ ...source, transcriptPath: '/client/path' }).success).toBe(false)
  expect(
    ResumeSource.safeParse({
      ...source,
      cliSource: { ...source.cliSource, accountHome: '/client/home' }
    }).success
  ).toBe(false)
  const first = createParams({ resumeFrom: source })
  expect(first.envelope.payloadFingerprint).not.toBe(
    createParams({ resumeFrom: RESUME }).envelope.payloadFingerprint
  )
  expect(first.envelope.payloadFingerprint).toBe(
    createParams({ resumeFrom: source }).envelope.payloadFingerprint
  )
  expect(first.envelope.payloadFingerprint).not.toBe(
    createParams({
      resumeFrom: {
        ...source,
        cliSource: { ...source.cliSource, paneKey: 'other:leaf' }
      }
    }).envelope.payloadFingerprint
  )
})