/**
 * The `subagentchat` resource address must stay byte-compatible with the host's
 * own codec: `@deepseek-ai/dsh-client-ui-subagent` parses what we emit, so a
 * different query order or an unescaped child id would silently open the wrong
 * page (or none).
 */
import { describe, expect, it } from 'vitest'
import {
  SUBAGENT_CHAT_ADDRESS,
  SUBAGENT_CHAT_KIND,
  subagentChatAddress,
} from '../src/client/native/subagent-chat.ts'

describe('subagentChatAddress', () => {
  it("emits the canonical form with parent and mode", () => {
    expect(subagentChatAddress({
      parentSessionId: 'parent-1',
      childSessionId: 'child-2',
      mode: 'one-shot',
    })).toBe('dsh-resource://subagentchat/session/child-2?parent=parent-1&mode=one-shot')
  })

  it('keeps a continuable mode verbatim', () => {
    expect(subagentChatAddress({
      parentSessionId: 'p',
      childSessionId: 'c',
      mode: 'continuable',
    })).toContain('mode=continuable')
  })

  it('percent-encodes a child id so the address stays one path segment', () => {
    const address = subagentChatAddress({
      parentSessionId: 'p',
      childSessionId: 'child/with:odd chars',
      mode: 'one-shot',
    })
    expect(address).toContain('/child%2Fwith%3Aodd%20chars?')
  })

  it('never leaks the parent into the path (it is a routing query only)', () => {
    const address = subagentChatAddress({
      parentSessionId: 'p secret',
      childSessionId: 'c',
      mode: 'one-shot',
    })
    expect(address.split('?')[0]).toBe(`${SUBAGENT_CHAT_ADDRESS}c`)
  })

  it('names the page kind the native Sidebar roots these pages under', () => {
    expect(SUBAGENT_CHAT_KIND).toBe('subagentchat')
  })

  it('omits an unknown mode so the host treats it as "unknown" and skips the check', () => {
    // The degraded synthesized catalog guesses mode from `running`; a wrong
    // guess used to 401 the open (the controller compares address.mode against
    // the child's durable descriptor). An unrecognized mode must be dropped,
    // which the controller reads as `mode: "unknown"` and does not compare.
    const address = subagentChatAddress({
      parentSessionId: 'p',
      childSessionId: 'c',
      mode: 'unknown' as never,
    })
    expect(address).toBe('dsh-resource://subagentchat/session/c?parent=p')
    expect(address).not.toContain('mode=')
  })

  it('still emits the mode when it is one of the two durable values', () => {
    expect(subagentChatAddress({ parentSessionId: 'p', childSessionId: 'c', mode: 'one-shot' }))
      .toContain('mode=one-shot')
    expect(subagentChatAddress({ parentSessionId: 'p', childSessionId: 'c', mode: 'continuable' }))
      .toContain('mode=continuable')
  })
})