import fs from "node:fs/promises";
import { SessionManager } from "@mariozechner/pi-coding-agent";
import { normalizeReplyPayload } from "../../auto-reply/reply/normalize-reply.js";
import type { ThinkLevel, VerboseLevel } from "../../auto-reply/thinking.js";
import { resolveSessionTranscriptFile } from "../../config/sessions/transcript.js";
import type { SessionEntry } from "../../config/sessions/types.js";
import type { OpenClawConfig } from "../../config/types.openclaw.js";
import { emitAgentEvent } from "../../infra/agent-events.js";
import { createSubsystemLogger } from "../../logging/subsystem.js";
import { emitSessionTranscriptUpdate } from "../../sessions/transcript-events.js";
import { sanitizeForLog } from "../../terminal/ansi.js";
import { resolveMessageChannel } from "../../utils/message-channel.js";
import { resolveBootstrapWarningSignaturesSeen } from "../bootstrap-budget.js";
import { runCliAgent } from "../cli-runner.js";
import { clearCliSession, getCliSessionBinding, setCliSessionBinding } from "../cli-session.js";
import { FailoverError } from "../failover-error.js";
import { isCliProvider } from "../model-selection.js";
import { prepareSessionManagerForRun } from "../pi-embedded-runner/session-manager-init.js";
import { runEmbeddedPiAgent, type EmbeddedPiRunResult } from "../pi-embedded.js";
import { buildWorkspaceSkillSnapshot } from "../skills.js";
import { buildUsageWithNoCost } from "../stream-message-shared.js";
import { resolveFallbackRetryPrompt } from "./attempt-execution.helpers.js";
import { persistSessionEntry } from "./attempt-execution.shared.js";
import { resolveAgentRunContext } from "./run-context.js";
import type { AgentCommandOpts } from "./types.js";

export {
  createAcpVisibleTextAccumulator,
  resolveFallbackRetryPrompt,
  sessionFileHasContent,
} from "./attempt-execution.helpers.js";

const log = createSubsystemLogger("agents/agent-command");

const ACP_TRANSCRIPT_USAGE = {
  input: 0,
  output: 0,
  cacheRead: 0,
  cacheWrite: 0,
  totalTokens: 0,
  cost: {
    input: 0,
    output: 0,
    cacheRead: 0,
    cacheWrite: 0,
    total: 0,
  },
} as const;

type TranscriptUsage = {
  input?: number;
  output?: number;
  cacheRead?: number;
  cacheWrite?: number;
  total?: number;
};

type PersistTextTurnTranscriptParams = {
  body: string;
  finalText: string;
  sessionId: string;
  sessionKey: string;
  sessionEntry: SessionEntry | undefined;
  sessionStore?: Record<string, SessionEntry>;
  storePath?: string;
  sessionAgentId: string;
  threadId?: string | number;
  sessionCwd: string;
  assistant: {
    api: string;
    provider: string;
    model: string;
    usage?: TranscriptUsage;
  };
};

function resolveTranscriptUsage(usage: PersistTextTurnTranscriptParams["assistant"]["usage"]) {
  if (!usage) {
    return ACP_TRANSCRIPT_USAGE;
  }
  return buildUsageWithNoCost({
    input: usage.input,
    output: usage.output,
    cacheRead: usage.cacheRead,
    cacheWrite: usage.cacheWrite,
    totalTokens: usage.total,
  });
}

async function persistTextTurnTranscript(
  params: PersistTextTurnTranscriptParams,
): Promise<SessionEntry | undefined> {
  const promptText = params.body;
  const replyText = params.finalText;
  if (!promptText && !replyText) {
    return params.sessionEntry;
  }

  const { sessionFile, sessionEntry } = await resolveSessionTranscriptFile({
    sessionId: params.sessionId,
    sessionKey: params.sessionKey,
    sessionEntry: params.sessionEntry,
    sessionStore: params.sessionStore,
    storePath: params.storePath,
    agentId: params.sessionAgentId,
    threadId: params.threadId,
  });
  const hadSessionFile = await fs
    .access(sessionFile)
    .then(() => true)
    .catch(() => false);
  const sessionManager = SessionManager.open(sessionFile);
  await prepareSessionManagerForRun({
    sessionManager,
    sessionFile,
    hadSessionFile,
    sessionId: params.sessionId,
    cwd: params.sessionCwd,
  });

  if (promptText) {
    sessionManager.appendMessage({
      role: "user",
      content: promptText,
      timestamp: Date.now(),
    });
  }

  if (replyText) {
    sessionManager.appendMessage({
      role: "assistant",
      content: [{ type: "text", text: replyText }],
      api: params.assistant.api,
      provider: params.assistant.provider,
      model: params.assistant.model,
      usage: resolveTranscriptUsage(params.assistant.usage),
      stopReason: "stop",
      timestamp: Date.now(),
    });
  }

  emitSessionTranscriptUpdate(sessionFile);
  return sessionEntry;
}

function resolveCliTranscriptReplyText(result: EmbeddedPiRunResult): string {
  const visibleText = result.meta.finalAssistantVisibleText?.trim();
  if (visibleText) {
    return visibleText;
  }

  return (result.payloads ?? [])
    .filter((payload) => !payload.isError && !payload.isReasoning)
    .map((payload) => payload.text?.trim() ?? "")
    .filter(Boolean)
    .join("\n\n");
}

export async function persistAcpTurnTranscript(params: {
  body: string;
  finalText: string;
  sessionId: string;
  sessionKey: string;
  sessionEntry: SessionEntry | undefined;
  sessionStore?: Record<string, SessionEntry>;
  storePath?: string;
  sessionAgentId: string;
  threadId?: string | number;
  sessionCwd: string;
}): Promise<SessionEntry | undefined> {
  return await persistTextTurnTranscript({
    ...params,
    assistant: {
      api: "openai-responses",
      provider: "openclaw",
      model: "acp-runtime",
    },
  });
}

export async function persistCliTurnTranscript(params: {
  body: string;
  result: EmbeddedPiRunResult;
  sessionId: string;
  sessionKey: string;
  sessionEntry: SessionEntry | undefined;
  sessionStore?: Record<string, SessionEntry>;
  storePath?: string;
  sessionAgentId: string;
  threadId?: string | number;
  sessionCwd: string;
}): Promise<SessionEntry | undefined> {
  const replyText = resolveCliTranscriptReplyText(params.result);
  const provider = params.result.meta.agentMeta?.provider?.trim() ?? "cli";
  const model = params.result.meta.agentMeta?.model?.trim() ?? "default";

  return await persistTextTurnTranscript({
    body: params.body,
    finalText: replyText,
    sessionId: params.sessionId,
    sessionKey: params.sessionKey,
    sessionEntry: params.sessionEntry,
    sessionStore: params.sessionStore,
    storePath: params.storePath,
    sessionAgentId: params.sessionAgentId,
    threadId: params.threadId,
    sessionCwd: params.sessionCwd,
    assistant: {
      api: "cli",
      provider,
      model,
      usage: params.result.meta.agentMeta?.usage,
    },
  });
}

export function runAgentAttempt(params: {
  providerOverride: string;
  modelOverride: string;
  cfg: OpenClawConfig;
  sessionEntry: SessionEntry | undefined;
  sessionId: string;
  sessionKey: string | undefined;
  sessionAgentId: string;
  sessionFile: string;
  workspaceDir: string;
  body: string;
  isFallbackRetry: boolean;
  resolvedThinkLevel: ThinkLevel;
  timeoutMs: number;
  runId: string;
  opts: AgentCommandOpts & { senderIsOwner: boolean };
  runContext: ReturnType<typeof resolveAgentRunContext>;
  spawnedBy: string | undefined;
  messageChannel: ReturnType<typeof resolveMessageChannel>;
  skillsSnapshot: ReturnType<typeof buildWorkspaceSkillSnapshot> | undefined;
  resolvedVerboseLevel: VerboseLevel | undefined;
  agentDir: string;
  onAgentEvent: (evt: { stream: string; data?: Record<string, unknown> }) => void;
  authProfileProvider: string;
  sessionStore?: Record<string, SessionEntry>;
  storePath?: string;
  allowTransientCooldownProbe?: boolean;
  sessionHasHistory?: boolean;
}) {
  const effectivePrompt = resolveFallbackRetryPrompt({
    body: params.body,
    isFallbackRetry: params.isFallbackRetry,
    sessionHasHistory: params.sessionHasHistory,
  });
  const bootstrapPromptWarningSignaturesSeen = resolveBootstrapWarningSignaturesSeen(
    params.sessionEntry?.systemPromptReport,
  );
  const bootstrapPromptWarningSignature =
    bootstrapPromptWarningSignaturesSeen[bootstrapPromptWarningSignaturesSeen.length - 1];
  const authProfileId =
    params.providerOverride === params.authProfileProvider
      ? params.sessionEntry?.authProfileOverride
      : undefined;
  if (isCliProvider(params.providerOverride, params.cfg)) {
    const cliSessionBinding = getCliSessionBinding(params.sessionEntry, params.providerOverride);
    const runCliWithSession = (nextCliSessionId: string | undefined) =>
      runCliAgent({
        sessionId: params.sessionId,
        sessionKey: params.sessionKey,
        agentId: params.sessionAgentId,
        sessionFile: params.sessionFile,
        workspaceDir: params.workspaceDir,
        config: params.cfg,
        prompt: effectivePrompt,
        provider: params.providerOverride,
        model: params.modelOverride,
        thinkLevel: params.resolvedThinkLevel,
        timeoutMs: params.timeoutMs,
        runId: params.runId,
        extraSystemPrompt: params.opts.extraSystemPrompt,
        cliSessionId: nextCliSessionId,
        cliSessionBinding:
          nextCliSessionId === cliSessionBinding?.sessionId ? cliSessionBinding : undefined,
        authProfileId,
        bootstrapPromptWarningSignaturesSeen,
        bootstrapPromptWarningSignature,
        images: params.isFallbackRetry ? undefined : params.opts.images,
        imageOrder: params.isFallbackRetry ? undefined : params.opts.imageOrder,
        skillsSnapshot: params.skillsSnapshot,
        streamParams: params.opts.streamParams,
        messageProvider: params.messageChannel,
        agentAccountId: params.runContext.accountId,
        senderIsOwner: params.opts.senderIsOwner,
      });
    return runCliWithSession(cliSessionBinding?.sessionId).catch(async (err) => {
      if (
        err instanceof FailoverError &&
        err.reason === "session_expired" &&
        cliSessionBinding?.sessionId &&
        params.sessionKey &&
        params.sessionStore &&
        params.storePath
      ) {
        log.warn(
          `CLI session expired, clearing from session store: provider=${sanitizeForLog(params.providerOverride)} sessionKey=${params.sessionKey}`,
        );

        const entry = params.sessionStore[params.sessionKey];
        if (entry) {
          const updatedEntry = { ...entry };
          clearCliSession(updatedEntry, params.providerOverride);
          updatedEntry.updatedAt = Date.now();

          await persistSessionEntry({
            sessionStore: params.sessionStore,
            sessionKey: params.sessionKey,
            storePath: params.storePath,
            entry: updatedEntry,
            clearedFields: ["cliSessionBindings", "cliSessionIds", "claudeCliSessionId"],
          });

          params.sessionEntry = updatedEntry;
        }

        return runCliWithSession(undefined).then(async (result) => {
          if (
            result.meta.agentMeta?.cliSessionBinding?.sessionId &&
            params.sessionKey &&
            params.sessionStore &&
            params.storePath
          ) {
            const entry = params.sessionStore[params.sessionKey];
            if (entry) {
              const updatedEntry = { ...entry };
              setCliSessionBinding(
                updatedEntry,
                params.providerOverride,
                result.meta.agentMeta.cliSessionBinding,
              );
              updatedEntry.updatedAt = Date.now();

              await persistSessionEntry({
                sessionStore: params.sessionStore,
                sessionKey: params.sessionKey,
                storePath: params.storePath,
                entry: updatedEntry,
              });
            }
          }
          return result;
        });
      }
      throw err;
    });
  }

  return runEmbeddedPiAgent({
    sessionId: params.sessionId,
    sessionKey: params.sessionKey,
    agentId: params.sessionAgentId,
    trigger: "user",
    messageChannel: params.messageChannel,
    agentAccountId: params.runContext.accountId,
    messageTo: params.opts.replyTo ?? params.opts.to,
    messageThreadId: params.opts.threadId,
    groupId: params.runContext.groupId,
    groupChannel: params.runContext.groupChannel,
    groupSpace: params.runContext.groupSpace,
    spawnedBy: params.spawnedBy,
    currentChannelId: params.runContext.currentChannelId,
    currentThreadTs: params.runContext.currentThreadTs,
    replyToMode: params.runContext.replyToMode,
    hasRepliedRef: params.runContext.hasRepliedRef,
    senderIsOwner: params.opts.senderIsOwner,
    sessionFile: params.sessionFile,
    workspaceDir: params.workspaceDir,
    config: params.cfg,
    skillsSnapshot: params.skillsSnapshot,
    prompt: effectivePrompt,
    images: params.isFallbackRetry ? undefined : params.opts.images,
    imageOrder: params.isFallbackRetry ? undefined : params.opts.imageOrder,
    clientTools: params.opts.clientTools,
    provider: params.providerOverride,
    model: params.modelOverride,
    authProfileId,
    authProfileIdSource: authProfileId ? params.sessionEntry?.authProfileOverrideSource : undefined,
    thinkLevel: params.resolvedThinkLevel,
    verboseLevel: params.resolvedVerboseLevel,
    timeoutMs: params.timeoutMs,
    runId: params.runId,
    lane: params.opts.lane,
    abortSignal: params.opts.abortSignal,
    extraSystemPrompt: params.opts.extraSystemPrompt,
    bootstrapContextMode: params.opts.bootstrapContextMode,
    bootstrapContextRunKind: params.opts.bootstrapContextRunKind,
    internalEvents: params.opts.internalEvents,
    inputProvenance: params.opts.inputProvenance,
    streamParams: params.opts.streamParams,
    agentDir: params.agentDir,
    allowTransientCooldownProbe: params.allowTransientCooldownProbe,
    cleanupBundleMcpOnRunEnd: params.opts.cleanupBundleMcpOnRunEnd,
    onAgentEvent: params.onAgentEvent,
    bootstrapPromptWarningSignaturesSeen,
    bootstrapPromptWarningSignature,
  });
}

export function buildAcpResult(params: {
  payloadText: string;
  startedAt: number;
  stopReason?: string;
  abortSignal?: AbortSignal;
}) {
  const normalizedFinalPayload = normalizeReplyPayload({
    text: params.payloadText,
  });
  const payloads = normalizedFinalPayload ? [normalizedFinalPayload] : [];
  return {
    payloads,
    meta: {
      durationMs: Date.now() - params.startedAt,
      aborted: params.abortSignal?.aborted === true,
      stopReason: params.stopReason,
    },
  };
}

export function emitAcpLifecycleStart(params: { runId: string; startedAt: number }) {
  emitAgentEvent({
    runId: params.runId,
    stream: "lifecycle",
    data: {
      phase: "start",
      startedAt: params.startedAt,
    },
  });
}

export function emitAcpLifecycleEnd(params: { runId: string }) {
  emitAgentEvent({
    runId: params.runId,
    stream: "lifecycle",
    data: {
      phase: "end",
      endedAt: Date.now(),
    },
  });
}

export function emitAcpLifecycleError(params: { runId: string; message: string }) {
  emitAgentEvent({
    runId: params.runId,
    stream: "lifecycle",
    data: {
      phase: "error",
      error: params.message,
      endedAt: Date.now(),
    },
  });
}

export function emitAcpAssistantDelta(params: { runId: string; text: string; delta: string }) {
  emitAgentEvent({
    runId: params.runId,
    stream: "assistant",
    data: {
      text: params.text,
      delta: params.delta,
    },
  });
}