oh-my-opencode/src/plugin/tool-execute-before.ts

import type { PluginContext } from "./types"
import { randomUUID } from "node:crypto"

import { getMainSessionID } from "../features/claude-code-session-state"
import { clearBoulderState } from "../features/boulder-state"
import { log } from "../shared"
import { resolveSessionAgent } from "./session-agent-resolver"
import { parseRalphLoopArguments } from "../hooks/ralph-loop/command-arguments"
import { ULTRAWORK_VERIFICATION_PROMISE } from "../hooks/ralph-loop/constants"
import { readState, writeState } from "../hooks/ralph-loop/storage"

import type { CreatedHooks } from "../create-hooks"

export function createToolExecuteBeforeHandler(args: {
  ctx: PluginContext
  hooks: CreatedHooks
}): (
  input: { tool: string; sessionID: string; callID: string },
  output: { args: Record<string, unknown> },
) => Promise<void> {
  const { ctx, hooks } = args

  return async (input, output): Promise<void> => {
    await hooks.writeExistingFileGuard?.["tool.execute.before"]?.(input, output)
    await hooks.questionLabelTruncator?.["tool.execute.before"]?.(input, output)
    await hooks.claudeCodeHooks?.["tool.execute.before"]?.(input, output)
    await hooks.nonInteractiveEnv?.["tool.execute.before"]?.(input, output)
    await hooks.commentChecker?.["tool.execute.before"]?.(input, output)
    await hooks.directoryAgentsInjector?.["tool.execute.before"]?.(input, output)
    await hooks.directoryReadmeInjector?.["tool.execute.before"]?.(input, output)
    await hooks.rulesInjector?.["tool.execute.before"]?.(input, output)
    await hooks.tasksTodowriteDisabler?.["tool.execute.before"]?.(input, output)
    await hooks.prometheusMdOnly?.["tool.execute.before"]?.(input, output)
    await hooks.sisyphusJuniorNotepad?.["tool.execute.before"]?.(input, output)
    await hooks.atlasHook?.["tool.execute.before"]?.(input, output)

    const normalizedToolName = input.tool.toLowerCase()
    if (
      normalizedToolName === "question"
      || normalizedToolName === "ask_user_question"
      || normalizedToolName === "askuserquestion"
    ) {
      const sessionID = input.sessionID || getMainSessionID()
      await hooks.sessionNotification?.({
        event: {
          type: "tool.execute.before",
          properties: {
            sessionID,
            tool: input.tool,
            args: output.args,
          },
        },
      })
    }

    if (input.tool === "task") {
      const argsObject = output.args
      const category = typeof argsObject.category === "string" ? argsObject.category : undefined
      const subagentType = typeof argsObject.subagent_type === "string" ? argsObject.subagent_type : undefined
      const sessionId = typeof argsObject.session_id === "string" ? argsObject.session_id : undefined

      if (category) {
        argsObject.subagent_type = "sisyphus-junior"
      } else if (!subagentType && sessionId) {
        const resolvedAgent = await resolveSessionAgent(ctx.client, sessionId)
        argsObject.subagent_type = resolvedAgent ?? "continue"
      }

      const normalizedSubagentType =
        typeof argsObject.subagent_type === "string" ? argsObject.subagent_type : undefined
      const prompt = typeof argsObject.prompt === "string" ? argsObject.prompt : ""
      const loopState = typeof ctx.directory === "string" ? readState(ctx.directory) : null
      const shouldInjectOracleVerification =
        normalizedSubagentType === "oracle"
        && loopState?.active === true
        && loopState.ultrawork === true
        && loopState.verification_pending === true
        && loopState.session_id === input.sessionID

      if (shouldInjectOracleVerification) {
        const verificationAttemptId = randomUUID()
        log("[tool-execute-before] Injecting ULW oracle verification attempt", {
          sessionID: input.sessionID,
          callID: input.callID,
          verificationAttemptId,
          loopSessionID: loopState.session_id,
        })
        writeState(ctx.directory, {
          ...loopState,
          verification_attempt_id: verificationAttemptId,
          verification_session_id: undefined,
        })
        argsObject.run_in_background = false
        argsObject.prompt = `${prompt ? `${prompt}\n\n` : ""}You are verifying the active ULTRAWORK loop result for this session. Review whether the original task is truly complete: ${loopState.prompt}\n\nIf the work is fully complete, end your response with <promise>${ULTRAWORK_VERIFICATION_PROMISE}</promise>. If the work is not complete, explain the blocking issues clearly and DO NOT emit that promise.\n\n<ulw_verification_attempt_id>${verificationAttemptId}</ulw_verification_attempt_id>`
      }
    }

    if (hooks.ralphLoop && input.tool === "skill") {
      const rawName = typeof output.args.name === "string" ? output.args.name : undefined
      const command = rawName?.replace(/^\//, "").toLowerCase()
      const sessionID = input.sessionID || getMainSessionID()

      if (command === "ralph-loop" && sessionID) {
        const rawArgs = rawName?.replace(/^\/?(ralph-loop)\s*/i, "") || ""
        const parsedArguments = parseRalphLoopArguments(rawArgs)

        hooks.ralphLoop.startLoop(sessionID, parsedArguments.prompt, {
          maxIterations: parsedArguments.maxIterations,
          completionPromise: parsedArguments.completionPromise,
          strategy: parsedArguments.strategy,
        })
      } else if (command === "cancel-ralph" && sessionID) {
        hooks.ralphLoop.cancelLoop(sessionID)
      } else if (command === "ulw-loop" && sessionID) {
        const rawArgs = rawName?.replace(/^\/?(ulw-loop)\s*/i, "") || ""
        const parsedArguments = parseRalphLoopArguments(rawArgs)

        hooks.ralphLoop.startLoop(sessionID, parsedArguments.prompt, {
          ultrawork: true,
          maxIterations: parsedArguments.maxIterations,
          completionPromise: parsedArguments.completionPromise,
          strategy: parsedArguments.strategy,
        })
      }
    }

    if (input.tool === "skill") {
      const rawName = typeof output.args.name === "string" ? output.args.name : undefined
      const command = rawName?.replace(/^\//, "").toLowerCase()
      const sessionID = input.sessionID || getMainSessionID()

      if (command === "stop-continuation" && sessionID) {
        hooks.stopContinuationGuard?.stop(sessionID)
        hooks.todoContinuationEnforcer?.cancelAllCountdowns()
        hooks.ralphLoop?.cancelLoop(sessionID)
        clearBoulderState(ctx.directory)
        log("[stop-continuation] All continuation mechanisms stopped", {
          sessionID,
        })
      }
    }
  }
}