import { describe, expect, it } from 'vitest'
import type {
  AgentJournalRenderItem,
  AgentJournalSubmission,
  AgentJournalTurnLifecycle
} from './agent-session-journal-types'
import { AGENT_SESSION_FAILURE_KINDS, isSubmissionRejectionKind } from './agent-session-failure'
import { agentJournalSubmissionKey } from './agent-session-journal-item-key'
import {
  classifyDispatchRejection,
  DISPATCH_REJECTED_CANCELLED,
  DISPATCH_REJECTED_CODEX_QUEUE_FULL,
  DISPATCH_REJECTED_HOST_RESTARTED,
  DISPATCH_REJECTED_NOT_DELIVERED,
  DISPATCH_REJECTED_PROVIDER_CLOSED,
  DISPATCH_REJECTED_QUEUE_FULL,
  DISPATCH_REJECTED_WRITE_FAILED
} from './structured-agent-session-dispatch-rejection'
import {
  hasStructuredAgentSessionRequest,
  latestStructuredAgentSessionRequest
} from './structured-agent-session-latest-request'
import { projectStructuredAgentSessionStatusSummary } from './structured-agent-session-projection'
import { latestNativeChatTurnSinceRequest } from './native-chat/native-chat-orca-stop-cut'
import { selectStructuredAgentTurnTimings } from './structured-agent-session-turn-timing'

const START_FAILURE = 'Claude is not signed in.'

it('keeps unresolved human input as a latest-request uncertainty boundary without a lifecycle', () => {
  const prior = turn('prior', 1, {
    state: 'interrupted',
    startedAt: 10,
    completedAt: 20,
    outcome: 'cancellation'
  })
  const unknown: AgentJournalRenderItem = {
    ...userEntry('outside', 2),
    turnScope: { kind: 'unknown' }
  }
  const items = [prior, unknown]
  expect(latestStructuredAgentSessionRequest([prior], [])?.outcome).toBe('cancellation')
  expect(latestStructuredAgentSessionRequest(items, [])).toBeNull()
  expect(latestNativeChatTurnSinceRequest(items, [])).toBeNull()
  expect(hasStructuredAgentSessionRequest([unknown], [])).toBe(true)
  expect(selectStructuredAgentTurnTimings(items)).toEqual(selectStructuredAgentTurnTimings([prior]))
  const next = turn('next', 3, { state: 'running', startedAt: 30 })
  expect(latestStructuredAgentSessionRequest([...items, next], [])).toMatchObject({
    id: 'next',
    turnState: 'running',
    outcome: null
  })
})

/** `intoTurn` names the turn the message's handover delivered it into — a steer. */
function userEntry(
  clientMessageId: string,
  sequence: number,
  intoTurn?: string
): AgentJournalRenderItem {
  return {
    itemId: agentJournalSubmissionKey(clientMessageId),
    revision: 0,
    sequence,
    observedAt: sequence,
    body: { kind: 'message', role: 'user', blocks: [{ type: 'text', text: clientMessageId }] },
    turnScope: intoTurn
      ? { kind: 'turn', turnItemId: `codex:turn:${intoTurn}` }
      : { kind: 'thread' }
  }
}

function turn(
  turnId: string,
  sequence: number,
  fields: Omit<AgentJournalTurnLifecycle, 'turnId'>
): AgentJournalRenderItem {
  return {
    itemId: `codex:turn:${turnId}`,
    revision: 1,
    sequence,
    observedAt: sequence,
    body: { kind: 'turn', turnId, ...fields }
  }
}

function sent(
  clientMessageId: string,
  fields: Partial<AgentJournalSubmission> & Pick<AgentJournalSubmission, 'dispatchState'>
): AgentJournalSubmission {
  return {
    clientMessageId,
    fence: 1,
    payloadFingerprint: clientMessageId,
    providerItemId: null,
    reason: null,
    submittedAt: 10,
    resolvedAt: 20,
    handoverRecorded: true,
    ...fields
  }
}

const rejected = (clientMessageId: string, reason: string, handedOverAt?: number) =>
  sent(clientMessageId, {
    dispatchState: 'rejected',
    reason,
    ...(handedOverAt !== undefined ? { handedOverAt } : {})
  })

type Row = {
  name: string
  items: AgentJournalRenderItem[]
  submissions: AgentJournalSubmission[]
  fence?: number
  outcome: 'success' | 'failure' | 'cancellation' | null
  listed: boolean
}

const ROWS: Row[] = [
  {
    name: 'a send the agent start refused',
    items: [userEntry('m1', 1)],
    submissions: [rejected('m1', START_FAILURE)],
    outcome: 'failure',
    listed: true
  },
  {
    name: 'a send the user withdrew (no verdict)',
    items: [userEntry('m1', 1)],
    submissions: [rejected('m1', DISPATCH_REJECTED_CANCELLED)],
    outcome: null,
    listed: false
  },
  {
    name: 'a send still queued when the host restarted (no verdict)',
    items: [userEntry('m1', 1)],
    submissions: [rejected('m1', DISPATCH_REJECTED_HOST_RESTARTED)],
    outcome: null,
    listed: false
  },
  {
    name: 'a send still queued when the provider closed (no verdict)',
    items: [userEntry('m1', 1)],
    submissions: [rejected('m1', DISPATCH_REJECTED_PROVIDER_CLOSED)],
    outcome: null,
    listed: false
  },
  {
    name: 'a send crash recovery found the provider never received (no verdict)',
    items: [userEntry('m1', 1)],
    submissions: [
      sent('m1', {
        dispatchState: 'rejected',
        reason: DISPATCH_REJECTED_NOT_DELIVERED,
        recovered: true
      })
    ],
    outcome: null,
    listed: false
  },
  {
    name: 'a turn that succeeded, then a send crash recovery found the provider never received',
    items: [
      userEntry('m1', 1),
      turn('t1', 2, { state: 'completed', outcome: 'success', completedAt: 15 }),
      userEntry('m2', 3)
    ],
    submissions: [
      sent('m1', { dispatchState: 'accepted' }),
      sent('m2', {
        dispatchState: 'rejected',
        reason: DISPATCH_REJECTED_NOT_DELIVERED,
        recovered: true
      })
    ],
    outcome: 'success',
    listed: true
  },
  {
    name: 'a send crash recovery left unknown',
    items: [userEntry('m1', 1)],
    submissions: [sent('m1', { dispatchState: 'unknown', recovered: true })],
    outcome: null,
    listed: false
  },
  {
    name: 'a send pending at an older fence',
    items: [userEntry('m1', 1)],
    submissions: [sent('m1', { dispatchState: 'pending', handedOverAt: 11, resolvedAt: null })],
    fence: 2,
    outcome: null,
    listed: false
  },
  {
    name: 'a turn that succeeded, then a send the start refused',
    items: [
      userEntry('m1', 1),
      turn('t1', 2, { state: 'completed', outcome: 'success', completedAt: 15 }),
      userEntry('m2', 3)
    ],
    submissions: [sent('m1', { dispatchState: 'accepted' }), rejected('m2', START_FAILURE)],
    outcome: 'failure',
    listed: true
  },
  {
    name: 'a refused send, then a turn that succeeded',
    items: [
      userEntry('m1', 1),
      userEntry('m2', 2),
      turn('t2', 3, { state: 'completed', outcome: 'success', completedAt: 40 })
    ],
    submissions: [rejected('m1', START_FAILURE), sent('m2', { dispatchState: 'accepted' })],
    outcome: 'success',
    listed: true
  },
  {
    name: 'a steer the provider refused inside a turn that then succeeded',
    items: [
      userEntry('m1', 1),
      turn('t1', 2, { state: 'completed', outcome: 'success', completedAt: 50 }),
      userEntry('steer', 3)
    ],
    submissions: [
      sent('m1', { dispatchState: 'accepted' }),
      sent('steer', {
        dispatchState: 'rejected',
        reason: 'no active turn to steer',
        answeredInTurn: { turnItemId: 'codex:turn:t1', via: 'steer' }
      })
    ],
    outcome: 'success',
    listed: true
  },
  {
    name: 'a user message the provider journaled itself (history, an older host)',
    items: [
      {
        itemId: 'codex:thread-1:turn-1:0',
        revision: 0,
        sequence: 1,
        observedAt: 1,
        body: { kind: 'message', role: 'user', blocks: [{ type: 'text', text: 'from history' }] }
      }
    ],
    submissions: [],
    outcome: null,
    listed: true
  },
  {
    name: 'a goal and nothing else yet',
    items: [
      {
        itemId: 'codex:goal-entry',
        revision: 0,
        sequence: 1,
        observedAt: 1,
        body: {
          kind: 'message',
          role: 'user',
          sentAs: 'goal',
          blocks: [{ type: 'text', text: 'ship it' }]
        }
      }
    ],
    submissions: [],
    outcome: null,
    listed: true
  }
]

describe('the latest request and its verdict', () => {
  it.each(ROWS)('$name', ({ items, submissions, fence, outcome, listed }) => {
    expect(latestStructuredAgentSessionRequest(items, submissions)?.outcome ?? null).toBe(outcome)
    const summary = projectStructuredAgentSessionStatusSummary(items, submissions, fence)
    expect(summary.status !== null).toBe(listed)
    if (listed && summary.status === 'idle') {
      expect(summary.turnOutcome ?? null).toBe(outcome)
    }
  })

  it('dates an idle session by the refusal it reports, not by the older turn', () => {
    const items = [
      userEntry('m1', 1),
      turn('t1', 2, { state: 'completed', outcome: 'success', completedAt: 15 }),
      userEntry('m2', 3)
    ]
    const submissions = [sent('m1', { dispatchState: 'accepted' }), rejected('m2', START_FAILURE)]
    expect(projectStructuredAgentSessionStatusSummary(items, submissions)).toMatchObject({
      status: 'idle',
      turnOutcome: 'failure',
      statusStartedAt: 20
    })
  })
})

describe('the sidebar verdict agrees with the rejection classifier', () => {
  // A sentence as the reason, so only the typed fact can make a kind read as no verdict.
  const typed = AGENT_SESSION_FAILURE_KINDS.filter(isSubmissionRejectionKind).map((kind) => ({
    name: `typed ${kind}`,
    submission: sent('m1', {
      dispatchState: 'rejected',
      reason: 'The message was not sent.',
      rejection: { kind }
    })
  }))
  const legacy = [
    DISPATCH_REJECTED_CANCELLED,
    DISPATCH_REJECTED_QUEUE_FULL,
    DISPATCH_REJECTED_CODEX_QUEUE_FULL,
    DISPATCH_REJECTED_HOST_RESTARTED,
    DISPATCH_REJECTED_PROVIDER_CLOSED,
    DISPATCH_REJECTED_NOT_DELIVERED,
    DISPATCH_REJECTED_WRITE_FAILED,
    `${DISPATCH_REJECTED_WRITE_FAILED}: broken pipe`
  ].map((reason) => ({ name: `legacy ${reason}`, submission: rejected('m1', reason) }))
  const unknownKind = {
    name: 'a kind this build cannot place',
    submission: sent('m1', {
      dispatchState: 'rejected',
      reason: 'A newer host wrote this.',
      rejection: { kind: 'someFutureKind' }
    })
  }

  it.each([...typed, ...legacy, unknownKind])('$name', ({ submission }) => {
    const items = [userEntry('m1', 1)]
    const { verdict } = classifyDispatchRejection(submission)
    expect(latestStructuredAgentSessionRequest(items, [submission])?.outcome ?? null).toBe(verdict)
    expect(hasStructuredAgentSessionRequest(items, [submission])).toBe(verdict === 'failure')
  })

  const failedNobody = new Set([
    'typed notDelivered',
    'typed cancelled',
    'typed hostRestarted',
    'typed chatClosed',
    `legacy ${DISPATCH_REJECTED_NOT_DELIVERED}`,
    `legacy ${DISPATCH_REJECTED_CANCELLED}`,
    `legacy ${DISPATCH_REJECTED_HOST_RESTARTED}`,
    `legacy ${DISPATCH_REJECTED_PROVIDER_CLOSED}`
  ])
  const failedNobodyCases = [...typed, ...legacy].filter(({ name }) => failedNobody.has(name))
  it('covers every send that failed nobody', () => {
    expect(failedNobodyCases).toHaveLength(failedNobody.size)
  })
  it.each(failedNobodyCases)(
    'gives no verdict for a send that failed nobody: $name',
    ({ submission }) => {
      expect(latestStructuredAgentSessionRequest([userEntry('m1', 1)], [submission])).toBeNull()
    }
  )
})

describe('the assistant line plain-text surfaces show', () => {
  function message(
    itemId: string,
    sequence: number,
    role: 'user' | 'assistant',
    text: string
  ): AgentJournalRenderItem {
    return {
      itemId,
      revision: 0,
      sequence,
      observedAt: sequence,
      body: { kind: 'message', role, blocks: [{ type: 'text', text }] }
    }
  }

  it('keeps a visual line out of the preview every status reader shows', () => {
    const items = [
      message('ask', 1, 'user', 'chart it'),
      message(
        'said',
        2,
        'assistant',
        'p95 is highest in ap-south.\n\n::orca-visual{file="latency.html" title="p95"}'
      ),
      message('only-visual', 3, 'assistant', '::orca-visual{file="table.html"}')
    ]
    // A reply that is nothing but a visual leaves the turn's earlier prose as the preview.
    expect(projectStructuredAgentSessionStatusSummary(items).lastAssistantMessage).toBe(
      'p95 is highest in ap-south.'
    )
  })
})