co-mono/packages/coding-agent/examples/custom-tools/subagent/subagent.ts
Mario Zechner 320556dbf5 Subagent: markdown rendering in expanded view, chain streaming shows all steps
- Export getMarkdownTheme() from coding-agent for custom tools
- Chain/parallel modes now use Markdown component in expanded view
- Chain streaming updates include all previous steps (not just current)
- Strip {previous} placeholder from task preview in renderCall
2025-12-19 04:54:02 +01:00

772 lines
32 KiB
TypeScript

/**
* Subagent Tool - Delegate tasks to specialized agents
*
* Spawns a separate `pi` process for each subagent invocation,
* giving it an isolated context window.
*
* Supports three modes:
* - Single: { agent: "name", task: "..." }
* - Parallel: { tasks: [{ agent: "name", task: "..." }, ...] }
* - Chain: { chain: [{ agent: "name", task: "... {previous} ..." }, ...] }
*
* Uses JSON mode to capture structured output from subagents.
*/
import { spawn } from "node:child_process";
import * as fs from "node:fs";
import * as os from "node:os";
import * as path from "node:path";
import { Type } from "@sinclair/typebox";
import type { AgentToolResult, Message } from "@mariozechner/pi-ai";
import { StringEnum } from "@mariozechner/pi-ai";
import { Container, Markdown, Spacer, Text } from "@mariozechner/pi-tui";
import { getMarkdownTheme, type CustomAgentTool, type CustomToolFactory, type ToolAPI } from "@mariozechner/pi-coding-agent";
import { type AgentConfig, type AgentScope, discoverAgents, formatAgentList } from "./agents.js";
const MAX_PARALLEL_TASKS = 8;
const MAX_CONCURRENCY = 4;
const MAX_AGENTS_IN_DESCRIPTION = 10;
const COLLAPSED_ITEM_COUNT = 10;
function formatTokens(count: number): string {
if (count < 1000) return count.toString();
if (count < 10000) return (count / 1000).toFixed(1) + "k";
if (count < 1000000) return Math.round(count / 1000) + "k";
return (count / 1000000).toFixed(1) + "M";
}
function formatUsageStats(usage: { input: number; output: number; cacheRead: number; cacheWrite: number; cost: number; contextTokens?: number; turns?: number }, model?: string): string {
const parts: string[] = [];
if (usage.turns) parts.push(`${usage.turns} turn${usage.turns > 1 ? "s" : ""}`);
if (usage.input) parts.push(`${formatTokens(usage.input)}`);
if (usage.output) parts.push(`${formatTokens(usage.output)}`);
if (usage.cacheRead) parts.push(`R${formatTokens(usage.cacheRead)}`);
if (usage.cacheWrite) parts.push(`W${formatTokens(usage.cacheWrite)}`);
if (usage.cost) parts.push(`$${usage.cost.toFixed(4)}`);
if (usage.contextTokens && usage.contextTokens > 0) {
parts.push(`ctx:${formatTokens(usage.contextTokens)}`);
}
if (model) parts.push(model);
return parts.join(" ");
}
function formatToolCall(toolName: string, args: Record<string, unknown>, themeFg: (color: any, text: string) => string): string {
const shortenPath = (p: string) => {
const home = os.homedir();
return p.startsWith(home) ? "~" + p.slice(home.length) : p;
};
switch (toolName) {
case "bash": {
const command = (args.command as string) || "...";
const preview = command.length > 60 ? command.slice(0, 60) + "..." : command;
return themeFg("muted", "$ ") + themeFg("toolOutput", preview);
}
case "read": {
const rawPath = (args.file_path || args.path || "...") as string;
const filePath = shortenPath(rawPath);
const offset = args.offset as number | undefined;
const limit = args.limit as number | undefined;
let text = themeFg("accent", filePath);
if (offset !== undefined || limit !== undefined) {
const startLine = offset ?? 1;
const endLine = limit !== undefined ? startLine + limit - 1 : "";
text += themeFg("warning", `:${startLine}${endLine ? `-${endLine}` : ""}`);
}
return themeFg("muted", "read ") + text;
}
case "write": {
const rawPath = (args.file_path || args.path || "...") as string;
const filePath = shortenPath(rawPath);
const content = (args.content || "") as string;
const lines = content.split("\n").length;
let text = themeFg("muted", "write ") + themeFg("accent", filePath);
if (lines > 1) text += themeFg("dim", ` (${lines} lines)`);
return text;
}
case "edit": {
const rawPath = (args.file_path || args.path || "...") as string;
return themeFg("muted", "edit ") + themeFg("accent", shortenPath(rawPath));
}
case "ls": {
const rawPath = (args.path || ".") as string;
return themeFg("muted", "ls ") + themeFg("accent", shortenPath(rawPath));
}
case "find": {
const pattern = (args.pattern || "*") as string;
const rawPath = (args.path || ".") as string;
return themeFg("muted", "find ") + themeFg("accent", pattern) + themeFg("dim", ` in ${shortenPath(rawPath)}`);
}
case "grep": {
const pattern = (args.pattern || "") as string;
const rawPath = (args.path || ".") as string;
return themeFg("muted", "grep ") + themeFg("accent", `/${pattern}/`) + themeFg("dim", ` in ${shortenPath(rawPath)}`);
}
default: {
const argsStr = JSON.stringify(args);
const preview = argsStr.length > 50 ? argsStr.slice(0, 50) + "..." : argsStr;
return themeFg("accent", toolName) + themeFg("dim", ` ${preview}`);
}
}
}
interface UsageStats {
input: number;
output: number;
cacheRead: number;
cacheWrite: number;
cost: number;
contextTokens: number;
turns: number;
}
interface SingleResult {
agent: string;
agentSource: "user" | "project" | "unknown";
task: string;
exitCode: number;
messages: Message[];
stderr: string;
usage: UsageStats;
model?: string;
stopReason?: string;
errorMessage?: string;
step?: number;
}
interface SubagentDetails {
mode: "single" | "parallel" | "chain";
agentScope: AgentScope;
projectAgentsDir: string | null;
results: SingleResult[];
}
function getFinalOutput(messages: Message[]): string {
for (let i = messages.length - 1; i >= 0; i--) {
const msg = messages[i];
if (msg.role === "assistant") {
for (const part of msg.content) {
if (part.type === "text") return part.text;
}
}
}
return "";
}
type DisplayItem = { type: "text"; text: string } | { type: "toolCall"; name: string; args: Record<string, any> };
function getDisplayItems(messages: Message[]): DisplayItem[] {
const items: DisplayItem[] = [];
for (const msg of messages) {
if (msg.role === "assistant") {
for (const part of msg.content) {
if (part.type === "text") items.push({ type: "text", text: part.text });
else if (part.type === "toolCall") items.push({ type: "toolCall", name: part.name, args: part.arguments });
}
}
}
return items;
}
async function mapWithConcurrencyLimit<TIn, TOut>(
items: TIn[],
concurrency: number,
fn: (item: TIn, index: number) => Promise<TOut>
): Promise<TOut[]> {
if (items.length === 0) return [];
const limit = Math.max(1, Math.min(concurrency, items.length));
const results: TOut[] = new Array(items.length);
let nextIndex = 0;
const workers = new Array(limit).fill(null).map(async () => {
while (true) {
const current = nextIndex++;
if (current >= items.length) return;
results[current] = await fn(items[current], current);
}
});
await Promise.all(workers);
return results;
}
function writePromptToTempFile(agentName: string, prompt: string): { dir: string; filePath: string } {
const tmpDir = fs.mkdtempSync(path.join(os.tmpdir(), "pi-subagent-"));
const safeName = agentName.replace(/[^\w.-]+/g, "_");
const filePath = path.join(tmpDir, `prompt-${safeName}.md`);
fs.writeFileSync(filePath, prompt, { encoding: "utf-8", mode: 0o600 });
return { dir: tmpDir, filePath };
}
type OnUpdateCallback = (partial: AgentToolResult<SubagentDetails>) => void;
async function runSingleAgent(
pi: ToolAPI,
agents: AgentConfig[],
agentName: string,
task: string,
step: number | undefined,
signal: AbortSignal | undefined,
onUpdate: OnUpdateCallback | undefined,
makeDetails: (results: SingleResult[]) => SubagentDetails
): Promise<SingleResult> {
const agent = agents.find((a) => a.name === agentName);
if (!agent) {
return {
agent: agentName,
agentSource: "unknown",
task,
exitCode: 1,
messages: [],
stderr: `Unknown agent: ${agentName}`,
usage: { input: 0, output: 0, cacheRead: 0, cacheWrite: 0, cost: 0, contextTokens: 0, turns: 0 },
step,
};
}
const args: string[] = ["--mode", "json", "-p", "--no-session"];
if (agent.model) args.push("--model", agent.model);
if (agent.tools && agent.tools.length > 0) args.push("--tools", agent.tools.join(","));
let tmpPromptDir: string | null = null;
let tmpPromptPath: string | null = null;
const currentResult: SingleResult = {
agent: agentName,
agentSource: agent.source,
task,
exitCode: 0,
messages: [],
stderr: "",
usage: { input: 0, output: 0, cacheRead: 0, cacheWrite: 0, cost: 0, contextTokens: 0, turns: 0 },
model: agent.model,
step,
};
const emitUpdate = () => {
if (onUpdate) {
onUpdate({
content: [{ type: "text", text: getFinalOutput(currentResult.messages) || "(running...)" }],
details: makeDetails([currentResult]),
});
}
};
try {
if (agent.systemPrompt.trim()) {
const tmp = writePromptToTempFile(agent.name, agent.systemPrompt);
tmpPromptDir = tmp.dir;
tmpPromptPath = tmp.filePath;
args.push("--append-system-prompt", tmpPromptPath);
}
args.push(`Task: ${task}`);
let wasAborted = false;
const exitCode = await new Promise<number>((resolve) => {
const proc = spawn("pi", args, { cwd: pi.cwd, shell: false, stdio: ["ignore", "pipe", "pipe"] });
let buffer = "";
const processLine = (line: string) => {
if (!line.trim()) return;
let event: any;
try { event = JSON.parse(line); } catch { return; }
if (event.type === "message_end" && event.message) {
const msg = event.message as Message;
currentResult.messages.push(msg);
if (msg.role === "assistant") {
currentResult.usage.turns++;
const usage = msg.usage;
if (usage) {
currentResult.usage.input += usage.input || 0;
currentResult.usage.output += usage.output || 0;
currentResult.usage.cacheRead += usage.cacheRead || 0;
currentResult.usage.cacheWrite += usage.cacheWrite || 0;
currentResult.usage.cost += usage.cost?.total || 0;
currentResult.usage.contextTokens = usage.totalTokens || 0;
}
if (!currentResult.model && msg.model) currentResult.model = msg.model;
if (msg.stopReason) currentResult.stopReason = msg.stopReason;
if (msg.errorMessage) currentResult.errorMessage = msg.errorMessage;
}
emitUpdate();
}
if (event.type === "tool_result_end" && event.message) {
currentResult.messages.push(event.message as Message);
emitUpdate();
}
};
proc.stdout.on("data", (data) => {
buffer += data.toString();
const lines = buffer.split("\n");
buffer = lines.pop() || "";
for (const line of lines) processLine(line);
});
proc.stderr.on("data", (data) => { currentResult.stderr += data.toString(); });
proc.on("close", (code) => {
if (buffer.trim()) processLine(buffer);
resolve(code ?? 0);
});
proc.on("error", () => { resolve(1); });
if (signal) {
const killProc = () => {
wasAborted = true;
proc.kill("SIGTERM");
setTimeout(() => { if (!proc.killed) proc.kill("SIGKILL"); }, 5000);
};
if (signal.aborted) killProc();
else signal.addEventListener("abort", killProc, { once: true });
}
});
currentResult.exitCode = exitCode;
if (wasAborted) throw new Error("Subagent was aborted");
return currentResult;
} finally {
if (tmpPromptPath) try { fs.unlinkSync(tmpPromptPath); } catch { /* ignore */ }
if (tmpPromptDir) try { fs.rmdirSync(tmpPromptDir); } catch { /* ignore */ }
}
}
const TaskItem = Type.Object({
agent: Type.String({ description: "Name of the agent to invoke" }),
task: Type.String({ description: "Task to delegate to the agent" }),
});
const ChainItem = Type.Object({
agent: Type.String({ description: "Name of the agent to invoke" }),
task: Type.String({ description: "Task with optional {previous} placeholder for prior output" }),
});
const AgentScopeSchema = StringEnum(["user", "project", "both"] as const, {
description: 'Which agent directories to use. Default: "user". Use "both" to include project-local agents.',
default: "user",
});
const SubagentParams = Type.Object({
agent: Type.Optional(Type.String({ description: "Name of the agent to invoke (for single mode)" })),
task: Type.Optional(Type.String({ description: "Task to delegate (for single mode)" })),
tasks: Type.Optional(Type.Array(TaskItem, { description: "Array of {agent, task} for parallel execution" })),
chain: Type.Optional(Type.Array(ChainItem, { description: "Array of {agent, task} for sequential execution" })),
agentScope: Type.Optional(AgentScopeSchema),
confirmProjectAgents: Type.Optional(Type.Boolean({ description: "Prompt before running project-local agents. Default: true.", default: true })),
});
const factory: CustomToolFactory = (pi) => {
const tool: CustomAgentTool<typeof SubagentParams, SubagentDetails> = {
name: "subagent",
label: "Subagent",
get description() {
const user = discoverAgents(pi.cwd, "user");
const project = discoverAgents(pi.cwd, "project");
const userList = formatAgentList(user.agents, MAX_AGENTS_IN_DESCRIPTION);
const projectList = formatAgentList(project.agents, MAX_AGENTS_IN_DESCRIPTION);
const userSuffix = userList.remaining > 0 ? `; ... and ${userList.remaining} more` : "";
const projectSuffix = projectList.remaining > 0 ? `; ... and ${projectList.remaining} more` : "";
const projectDirNote = project.projectAgentsDir ? ` (from ${project.projectAgentsDir})` : "";
return [
"Delegate tasks to specialized subagents with isolated context.",
"Modes: single (agent + task), parallel (tasks array), chain (sequential with {previous} placeholder).",
'Default agent scope is "user" (from ~/.pi/agent/agents).',
'To enable project-local agents in .pi/agents, set agentScope: "both" (or "project").',
`User agents: ${userList.text}${userSuffix}.`,
`Project agents${projectDirNote}: ${projectList.text}${projectSuffix}.`,
].join(" ");
},
parameters: SubagentParams,
async execute(_toolCallId, params, signal, onUpdate) {
const agentScope: AgentScope = params.agentScope ?? "user";
const discovery = discoverAgents(pi.cwd, agentScope);
const agents = discovery.agents;
const confirmProjectAgents = params.confirmProjectAgents ?? true;
const hasChain = (params.chain?.length ?? 0) > 0;
const hasTasks = (params.tasks?.length ?? 0) > 0;
const hasSingle = Boolean(params.agent && params.task);
const modeCount = Number(hasChain) + Number(hasTasks) + Number(hasSingle);
const makeDetails = (mode: "single" | "parallel" | "chain") => (results: SingleResult[]): SubagentDetails => ({
mode, agentScope, projectAgentsDir: discovery.projectAgentsDir, results,
});
if (modeCount !== 1) {
const available = agents.map((a) => `${a.name} (${a.source})`).join(", ") || "none";
return { content: [{ type: "text", text: `Invalid parameters. Provide exactly one mode.\nAvailable agents: ${available}` }], details: makeDetails("single")([]) };
}
if ((agentScope === "project" || agentScope === "both") && confirmProjectAgents && pi.hasUI) {
const requestedAgentNames = new Set<string>();
if (params.chain) for (const step of params.chain) requestedAgentNames.add(step.agent);
if (params.tasks) for (const t of params.tasks) requestedAgentNames.add(t.agent);
if (params.agent) requestedAgentNames.add(params.agent);
const projectAgentsRequested = Array.from(requestedAgentNames)
.map((name) => agents.find((a) => a.name === name))
.filter((a): a is AgentConfig => a?.source === "project");
if (projectAgentsRequested.length > 0) {
const names = projectAgentsRequested.map((a) => a.name).join(", ");
const dir = discovery.projectAgentsDir ?? "(unknown)";
const ok = await pi.ui.confirm("Run project-local agents?", `Agents: ${names}\nSource: ${dir}\n\nProject agents are repo-controlled. Only continue for trusted repositories.`);
if (!ok) return { content: [{ type: "text", text: "Canceled: project-local agents not approved." }], details: makeDetails(hasChain ? "chain" : hasTasks ? "parallel" : "single")([]) };
}
}
if (params.chain && params.chain.length > 0) {
const results: SingleResult[] = [];
let previousOutput = "";
for (let i = 0; i < params.chain.length; i++) {
const step = params.chain[i];
const taskWithContext = step.task.replace(/\{previous\}/g, previousOutput);
// Create update callback that includes all previous results
const chainUpdate: OnUpdateCallback | undefined = onUpdate ? (partial) => {
// Combine completed results with current streaming result
const currentResult = partial.details?.results[0];
if (currentResult) {
const allResults = [...results, currentResult];
onUpdate({
content: partial.content,
details: makeDetails("chain")(allResults),
});
}
} : undefined;
const result = await runSingleAgent(pi, agents, step.agent, taskWithContext, i + 1, signal, chainUpdate, makeDetails("chain"));
results.push(result);
const isError = result.exitCode !== 0 || result.stopReason === "error" || result.stopReason === "aborted";
if (isError) {
const errorMsg = result.errorMessage || result.stderr || getFinalOutput(result.messages) || "(no output)";
return { content: [{ type: "text", text: `Chain stopped at step ${i + 1} (${step.agent}): ${errorMsg}` }], details: makeDetails("chain")(results), isError: true };
}
previousOutput = getFinalOutput(result.messages);
}
return { content: [{ type: "text", text: getFinalOutput(results[results.length - 1].messages) || "(no output)" }], details: makeDetails("chain")(results) };
}
if (params.tasks && params.tasks.length > 0) {
if (params.tasks.length > MAX_PARALLEL_TASKS) return { content: [{ type: "text", text: `Too many parallel tasks (${params.tasks.length}). Max is ${MAX_PARALLEL_TASKS}.` }], details: makeDetails("parallel")([]) };
// Track all results for streaming updates
const allResults: SingleResult[] = new Array(params.tasks.length);
// Initialize placeholder results
for (let i = 0; i < params.tasks.length; i++) {
allResults[i] = {
agent: params.tasks[i].agent,
agentSource: "unknown",
task: params.tasks[i].task,
exitCode: -1, // -1 = still running
messages: [],
stderr: "",
usage: { input: 0, output: 0, cacheRead: 0, cacheWrite: 0, cost: 0, contextTokens: 0, turns: 0 },
};
}
const emitParallelUpdate = () => {
if (onUpdate) {
const running = allResults.filter(r => r.exitCode === -1).length;
const done = allResults.filter(r => r.exitCode !== -1).length;
onUpdate({
content: [{ type: "text", text: `Parallel: ${done}/${allResults.length} done, ${running} running...` }],
details: makeDetails("parallel")([...allResults]),
});
}
};
const results = await mapWithConcurrencyLimit(params.tasks, MAX_CONCURRENCY, async (t, index) => {
const result = await runSingleAgent(
pi, agents, t.agent, t.task, undefined, signal,
// Per-task update callback
(partial) => {
if (partial.details?.results[0]) {
allResults[index] = partial.details.results[0];
emitParallelUpdate();
}
},
makeDetails("parallel")
);
allResults[index] = result;
emitParallelUpdate();
return result;
});
const successCount = results.filter((r) => r.exitCode === 0).length;
const summaries = results.map((r) => {
const output = getFinalOutput(r.messages);
const preview = output.slice(0, 100) + (output.length > 100 ? "..." : "");
return `[${r.agent}] ${r.exitCode === 0 ? "completed" : "failed"}: ${preview || "(no output)"}`;
});
return { content: [{ type: "text", text: `Parallel: ${successCount}/${results.length} succeeded\n\n${summaries.join("\n\n")}` }], details: makeDetails("parallel")(results) };
}
if (params.agent && params.task) {
const result = await runSingleAgent(pi, agents, params.agent, params.task, undefined, signal, onUpdate, makeDetails("single"));
const isError = result.exitCode !== 0 || result.stopReason === "error" || result.stopReason === "aborted";
if (isError) {
const errorMsg = result.errorMessage || result.stderr || getFinalOutput(result.messages) || "(no output)";
return { content: [{ type: "text", text: `Agent ${result.stopReason || "failed"}: ${errorMsg}` }], details: makeDetails("single")([result]), isError: true };
}
return { content: [{ type: "text", text: getFinalOutput(result.messages) || "(no output)" }], details: makeDetails("single")([result]) };
}
const available = agents.map((a) => `${a.name} (${a.source})`).join(", ") || "none";
return { content: [{ type: "text", text: `Invalid parameters. Available agents: ${available}` }], details: makeDetails("single")([]) };
},
renderCall(args, theme) {
const scope: AgentScope = args.agentScope ?? "user";
if (args.chain && args.chain.length > 0) {
let text = theme.fg("toolTitle", theme.bold("subagent ")) + theme.fg("accent", `chain (${args.chain.length} steps)`) + theme.fg("muted", ` [${scope}]`);
for (let i = 0; i < Math.min(args.chain.length, 3); i++) {
const step = args.chain[i];
// Clean up {previous} placeholder for display
const cleanTask = step.task.replace(/\{previous\}/g, "").trim();
const preview = cleanTask.length > 40 ? cleanTask.slice(0, 40) + "..." : cleanTask;
text += "\n " + theme.fg("muted", `${i + 1}.`) + " " + theme.fg("accent", step.agent) + theme.fg("dim", ` ${preview}`);
}
if (args.chain.length > 3) text += "\n " + theme.fg("muted", `... +${args.chain.length - 3} more`);
return new Text(text, 0, 0);
}
if (args.tasks && args.tasks.length > 0) {
let text = theme.fg("toolTitle", theme.bold("subagent ")) + theme.fg("accent", `parallel (${args.tasks.length} tasks)`) + theme.fg("muted", ` [${scope}]`);
for (const t of args.tasks.slice(0, 3)) {
const preview = t.task.length > 40 ? t.task.slice(0, 40) + "..." : t.task;
text += "\n " + theme.fg("accent", t.agent) + theme.fg("dim", ` ${preview}`);
}
if (args.tasks.length > 3) text += "\n " + theme.fg("muted", `... +${args.tasks.length - 3} more`);
return new Text(text, 0, 0);
}
const agentName = args.agent || "...";
const preview = args.task ? (args.task.length > 60 ? args.task.slice(0, 60) + "..." : args.task) : "...";
let text = theme.fg("toolTitle", theme.bold("subagent ")) + theme.fg("accent", agentName) + theme.fg("muted", ` [${scope}]`);
text += "\n " + theme.fg("dim", preview);
return new Text(text, 0, 0);
},
renderResult(result, { expanded }, theme) {
const { details } = result;
if (!details || details.results.length === 0) {
const text = result.content[0];
return new Text(text?.type === "text" ? text.text : "(no output)", 0, 0);
}
const mdTheme = getMarkdownTheme();
const renderDisplayItems = (items: DisplayItem[], limit?: number) => {
const toShow = limit ? items.slice(-limit) : items;
const skipped = limit && items.length > limit ? items.length - limit : 0;
let text = "";
if (skipped > 0) text += theme.fg("muted", `... ${skipped} earlier items\n`);
for (const item of toShow) {
if (item.type === "text") {
const preview = expanded ? item.text : item.text.split("\n").slice(0, 3).join("\n");
text += theme.fg("toolOutput", preview) + "\n";
} else {
text += theme.fg("muted", "→ ") + formatToolCall(item.name, item.args, theme.fg.bind(theme)) + "\n";
}
}
return text.trimEnd();
};
if (details.mode === "single" && details.results.length === 1) {
const r = details.results[0];
const isError = r.exitCode !== 0 || r.stopReason === "error" || r.stopReason === "aborted";
const icon = isError ? theme.fg("error", "✗") : theme.fg("success", "✓");
const displayItems = getDisplayItems(r.messages);
const finalOutput = getFinalOutput(r.messages);
if (expanded) {
const container = new Container();
let header = icon + " " + theme.fg("toolTitle", theme.bold(r.agent)) + theme.fg("muted", ` (${r.agentSource})`);
if (isError && r.stopReason) header += " " + theme.fg("error", `[${r.stopReason}]`);
container.addChild(new Text(header, 0, 0));
if (isError && r.errorMessage) container.addChild(new Text(theme.fg("error", `Error: ${r.errorMessage}`), 0, 0));
container.addChild(new Spacer(1));
container.addChild(new Text(theme.fg("muted", "─── Task ───"), 0, 0));
container.addChild(new Text(theme.fg("dim", r.task), 0, 0));
container.addChild(new Spacer(1));
container.addChild(new Text(theme.fg("muted", "─── Output ───"), 0, 0));
if (displayItems.length === 0 && !finalOutput) {
container.addChild(new Text(theme.fg("muted", "(no output)"), 0, 0));
} else {
for (const item of displayItems) {
if (item.type === "toolCall") container.addChild(new Text(theme.fg("muted", "→ ") + formatToolCall(item.name, item.args, theme.fg.bind(theme)), 0, 0));
}
if (finalOutput) {
container.addChild(new Spacer(1));
container.addChild(new Markdown(finalOutput.trim(), 0, 0, mdTheme));
}
}
const usageStr = formatUsageStats(r.usage, r.model);
if (usageStr) { container.addChild(new Spacer(1)); container.addChild(new Text(theme.fg("dim", usageStr), 0, 0)); }
return container;
}
let text = icon + " " + theme.fg("toolTitle", theme.bold(r.agent)) + theme.fg("muted", ` (${r.agentSource})`);
if (isError && r.stopReason) text += " " + theme.fg("error", `[${r.stopReason}]`);
if (isError && r.errorMessage) text += "\n" + theme.fg("error", `Error: ${r.errorMessage}`);
else if (displayItems.length === 0) text += "\n" + theme.fg("muted", "(no output)");
else {
text += "\n" + renderDisplayItems(displayItems, COLLAPSED_ITEM_COUNT);
if (displayItems.length > COLLAPSED_ITEM_COUNT) text += "\n" + theme.fg("muted", "(Ctrl+O to expand)");
}
const usageStr = formatUsageStats(r.usage, r.model);
if (usageStr) text += "\n" + theme.fg("dim", usageStr);
return new Text(text, 0, 0);
}
const aggregateUsage = (results: SingleResult[]) => {
const total = { input: 0, output: 0, cacheRead: 0, cacheWrite: 0, cost: 0, turns: 0 };
for (const r of results) {
total.input += r.usage.input;
total.output += r.usage.output;
total.cacheRead += r.usage.cacheRead;
total.cacheWrite += r.usage.cacheWrite;
total.cost += r.usage.cost;
total.turns += r.usage.turns;
}
return total;
};
if (details.mode === "chain") {
const successCount = details.results.filter((r) => r.exitCode === 0).length;
const icon = successCount === details.results.length ? theme.fg("success", "✓") : theme.fg("error", "✗");
if (expanded) {
const container = new Container();
container.addChild(new Text(icon + " " + theme.fg("toolTitle", theme.bold("chain ")) + theme.fg("accent", `${successCount}/${details.results.length} steps`), 0, 0));
for (const r of details.results) {
const rIcon = r.exitCode === 0 ? theme.fg("success", "✓") : theme.fg("error", "✗");
const displayItems = getDisplayItems(r.messages);
const finalOutput = getFinalOutput(r.messages);
container.addChild(new Spacer(1));
container.addChild(new Text(theme.fg("muted", `─── Step ${r.step}: `) + theme.fg("accent", r.agent) + " " + rIcon, 0, 0));
container.addChild(new Text(theme.fg("muted", "Task: ") + theme.fg("dim", r.task), 0, 0));
// Show tool calls
for (const item of displayItems) {
if (item.type === "toolCall") {
container.addChild(new Text(theme.fg("muted", "→ ") + formatToolCall(item.name, item.args, theme.fg.bind(theme)), 0, 0));
}
}
// Show final output as markdown
if (finalOutput) {
container.addChild(new Spacer(1));
container.addChild(new Markdown(finalOutput.trim(), 0, 0, mdTheme));
}
const stepUsage = formatUsageStats(r.usage, r.model);
if (stepUsage) container.addChild(new Text(theme.fg("dim", stepUsage), 0, 0));
}
const usageStr = formatUsageStats(aggregateUsage(details.results));
if (usageStr) {
container.addChild(new Spacer(1));
container.addChild(new Text(theme.fg("dim", `Total: ${usageStr}`), 0, 0));
}
return container;
}
// Collapsed view
let text = icon + " " + theme.fg("toolTitle", theme.bold("chain ")) + theme.fg("accent", `${successCount}/${details.results.length} steps`);
for (const r of details.results) {
const rIcon = r.exitCode === 0 ? theme.fg("success", "✓") : theme.fg("error", "✗");
const displayItems = getDisplayItems(r.messages);
text += "\n\n" + theme.fg("muted", `─── Step ${r.step}: `) + theme.fg("accent", r.agent) + " " + rIcon;
if (displayItems.length === 0) text += "\n" + theme.fg("muted", "(no output)");
else text += "\n" + renderDisplayItems(displayItems, 5);
}
const usageStr = formatUsageStats(aggregateUsage(details.results));
if (usageStr) text += "\n\n" + theme.fg("dim", `Total: ${usageStr}`);
text += "\n" + theme.fg("muted", "(Ctrl+O to expand)");
return new Text(text, 0, 0);
}
if (details.mode === "parallel") {
const running = details.results.filter((r) => r.exitCode === -1).length;
const successCount = details.results.filter((r) => r.exitCode === 0).length;
const failCount = details.results.filter((r) => r.exitCode > 0).length;
const isRunning = running > 0;
const icon = isRunning ? theme.fg("warning", "⏳") : (failCount > 0 ? theme.fg("warning", "◐") : theme.fg("success", "✓"));
const status = isRunning
? `${successCount + failCount}/${details.results.length} done, ${running} running`
: `${successCount}/${details.results.length} tasks`;
if (expanded && !isRunning) {
const container = new Container();
container.addChild(new Text(icon + " " + theme.fg("toolTitle", theme.bold("parallel ")) + theme.fg("accent", status), 0, 0));
for (const r of details.results) {
const rIcon = r.exitCode === 0 ? theme.fg("success", "✓") : theme.fg("error", "✗");
const displayItems = getDisplayItems(r.messages);
const finalOutput = getFinalOutput(r.messages);
container.addChild(new Spacer(1));
container.addChild(new Text(theme.fg("muted", "─── ") + theme.fg("accent", r.agent) + " " + rIcon, 0, 0));
container.addChild(new Text(theme.fg("muted", "Task: ") + theme.fg("dim", r.task), 0, 0));
// Show tool calls
for (const item of displayItems) {
if (item.type === "toolCall") {
container.addChild(new Text(theme.fg("muted", "→ ") + formatToolCall(item.name, item.args, theme.fg.bind(theme)), 0, 0));
}
}
// Show final output as markdown
if (finalOutput) {
container.addChild(new Spacer(1));
container.addChild(new Markdown(finalOutput.trim(), 0, 0, mdTheme));
}
const taskUsage = formatUsageStats(r.usage, r.model);
if (taskUsage) container.addChild(new Text(theme.fg("dim", taskUsage), 0, 0));
}
const usageStr = formatUsageStats(aggregateUsage(details.results));
if (usageStr) {
container.addChild(new Spacer(1));
container.addChild(new Text(theme.fg("dim", `Total: ${usageStr}`), 0, 0));
}
return container;
}
// Collapsed view (or still running)
let text = icon + " " + theme.fg("toolTitle", theme.bold("parallel ")) + theme.fg("accent", status);
for (const r of details.results) {
const rIcon = r.exitCode === -1 ? theme.fg("warning", "⏳") : (r.exitCode === 0 ? theme.fg("success", "✓") : theme.fg("error", "✗"));
const displayItems = getDisplayItems(r.messages);
text += "\n\n" + theme.fg("muted", "─── ") + theme.fg("accent", r.agent) + " " + rIcon;
if (displayItems.length === 0) text += "\n" + theme.fg("muted", r.exitCode === -1 ? "(running...)" : "(no output)");
else text += "\n" + renderDisplayItems(displayItems, 5);
}
if (!isRunning) {
const usageStr = formatUsageStats(aggregateUsage(details.results));
if (usageStr) text += "\n\n" + theme.fg("dim", `Total: ${usageStr}`);
}
if (!expanded) text += "\n" + theme.fg("muted", "(Ctrl+O to expand)");
return new Text(text, 0, 0);
}
const text = result.content[0];
return new Text(text?.type === "text" ? text.text : "(no output)", 0, 0);
},
};
return tool;
};
export default factory;