| 1 | #!/usr/bin/env node |
| 2 | // g1t's Claude Code hooks. Claude Code runs this file for SessionStart, |
| 3 | // UserPromptSubmit, PreToolUse, PostToolUse, SubagentStart, SubagentStop, |
| 4 | // Stop and SessionEnd, with the event as JSON on stdin. In a working copy of |
| 5 | // a g1t repository it records the session on g1t through the `g1t` CLI: |
| 6 | // |
| 7 | // SessionStart g1t session start --harness claude_code --harness-session-id ID |
| 8 | // and, when the branch, G1T_ISSUE or the session names an |
| 9 | // issue, g1t work context N, given to Claude as context |
| 10 | // UserPromptSubmit g1t session log --kind prompt TEXT (first 2,000 characters) |
| 11 | // and, for a plugin's skill typed as /plugin:name, |
| 12 | // g1t session log --kind skill NAME |
| 13 | // PreToolUse Agent: the task it is given, kept until its subagent starts. |
| 14 | // Inside a subagent, its own g1t session for the g1t |
| 15 | // commands (Bash or PowerShell) and g1t MCP claims it makes. |
| 16 | // PostToolUse g1t session log --kind tool_call "Tool: what it was called with" |
| 17 | // (a Skill: g1t session log --kind skill NAME), and |
| 18 | // g1t session touch for the files it wrote, the commits |
| 19 | // it made, the branches it pushed and the issues it claimed; |
| 20 | // after a git push that reached the remote, |
| 21 | // g1t api update_session -f id=SESSION -f head_commit=SHA; |
| 22 | // after an Agent call, its subagent's task and, once it |
| 23 | // finished, its final message |
| 24 | // SubagentStart g1t session start --parent SESSION --agent-type TYPE …: |
| 25 | // each subagent is a session of its own, under this one |
| 26 | // SubagentStop g1t session end --result "its final message" for it |
| 27 | // Stop g1t session heartbeat |
| 28 | // SessionEnd g1t session end --reason REASON |
| 29 | // |
| 30 | // What a tool returned (tool_response) is never sent, with one exception |
| 31 | // that is not a tool's output: an Agent call's answer, which is its |
| 32 | // subagent's final message (as SubagentStop gives it) and its id. Prompts |
| 33 | // are not sent when G1T_RECORD_PROMPTS=0, and nothing is when G1T_RECORD=0. |
| 34 | // |
| 35 | // Every hook returns at once: the CLI calls run in a detached process of |
| 36 | // their own, so a slow network never holds Claude up. If `g1t` is not |
| 37 | // installed, not signed in or older than MIN_CLI (or refuses a command, |
| 38 | // as an old CLI does), nothing is recorded and Claude Code says so once. |
| 39 | // Nothing is ever installed. No dependencies; Node 18 or later, and on an |
| 40 | // older Node it says so once and does nothing. |
| 41 | // |
| 42 | // Every CLI call is in test/cli-contract.json, which the tests hold this |
| 43 | // file and the CLI's own parser (crates/g1t) to. |
| 44 | |
| 45 | import { spawn, spawnSync } from "node:child_process"; |
| 46 | import { existsSync, mkdirSync, readdirSync, readFileSync, rmSync, statSync, writeFileSync } from "node:fs"; |
| 47 | import { homedir } from "node:os"; |
| 48 | import { delimiter, dirname, isAbsolute, join, relative, resolve } from "node:path"; |
| 49 | import { fileURLToPath } from "node:url"; |
| 50 | |
| 51 | /** The most of a prompt that is sent. */ |
| 52 | export const PROMPT_LIMIT = 2000; |
| 53 | /** The most of a tool call's summary that is sent. */ |
| 54 | export const SUMMARY_LIMIT = 200; |
| 55 | /** The most of an issue's work context given to Claude. */ |
| 56 | export const CONTEXT_LIMIT = 8000; |
| 57 | /** The most of a subagent's task (its description) that is sent. */ |
| 58 | export const TASK_LIMIT = 200; |
| 59 | /** The most of a subagent's prompt that is sent. */ |
| 60 | export const AGENT_PROMPT_LIMIT = 4000; |
| 61 | /** The most of a subagent's final message that is sent. */ |
| 62 | export const RESULT_LIMIT = 8000; |
| 63 | /** How long SessionStart waits for an issue's work context. */ |
| 64 | const CONTEXT_WAIT_MS = 900; |
| 65 | /** Exit code the g1t CLI gives when signing in is needed. */ |
| 66 | const EXIT_AUTH = 4; |
| 67 | /** Exit code the g1t CLI gives for a command it does not take, as a CLI older than the plugin does. */ |
| 68 | const EXIT_USAGE = 2; |
| 69 | /** The oldest g1t CLI that takes every command the hooks run (test/cli-contract.json's minimum_version). */ |
| 70 | export const MIN_CLI = "0.3.2"; |
| 71 | /** The oldest Node the hooks run on. */ |
| 72 | export const MIN_NODE = 18; |
| 73 | /** How to update the CLI: its installer, run again. */ |
| 74 | const INSTALL = "`curl -fsSL https://g1t.sh/install | sh` (on Windows, `irm https://g1t.sh/install.ps1 | iex`)"; |
| 75 | /** The tools that run shell commands. */ |
| 76 | const SHELL_TOOLS = new Set(["Bash", "PowerShell"]); |
| 77 | /** The tool that starts subagents (Task before Claude Code renamed it). */ |
| 78 | const AGENT_TOOLS = new Set(["Agent", "Task"]); |
| 79 | /** Tools that write a file, and where they say which. */ |
| 80 | const WRITERS = new Set(["Write", "Edit", "MultiEdit", "NotebookEdit"]); |
| 81 | |
| 82 | const SELF = fileURLToPath(import.meta.url); |
| 83 | |
| 84 | // --- what to send ------------------------------------------------------ |
| 85 | |
| 86 | export function clip(text, limit) { |
| 87 | const value = String(text ?? ""); |
| 88 | return value.length > limit ? `${value.slice(0, limit - 1)}…` : value; |
| 89 | } |
| 90 | |
| 91 | /** Hides what looks like a secret in a command line before it is sent. */ |
| 92 | export function redact(text) { |
| 93 | return String(text) |
| 94 | .replace(/\b(g1t|ghp|gho|ghs|github_pat|glpat|xox[abpr]|sk-ant|sk|rk)[-_][A-Za-z0-9_-]{8,}/g, "$1_…") |
| 95 | .replace(/(authorization:\s*(?:bearer|basic|token)\s+)[^\s"']+/gi, "$1…") |
| 96 | .replace(/(\b[A-Za-z_]*(?:TOKEN|SECRET|PASSWORD|PASSWD|API_?KEY|PRIVATE_KEY)[A-Za-z_]*=)("[^"]*"|'[^']*'|\S+)/gi, "$1…") |
| 97 | .replace(/(--(?:token|password|secret)[= ])\S+/gi, "$1…") |
| 98 | .replace(/(https?:\/\/)[^\s/:@]+:[^\s/@]+@/g, "$1…@"); |
| 99 | } |
| 100 | |
| 101 | /** A path as the repository names it: relative to its root, with forward slashes; null outside it. */ |
| 102 | export function repoPath(path, cwd) { |
| 103 | if (typeof path !== "string" || !path) return null; |
| 104 | if (!isAbsolute(path)) return path.replaceAll("\\", "/").replace(/^\.\//, ""); |
| 105 | if (!cwd) return null; |
| 106 | const rel = relative(cwd, path); |
| 107 | if (!rel || rel.startsWith("..") || isAbsolute(rel)) return null; |
| 108 | return rel.replaceAll("\\", "/"); |
| 109 | } |
| 110 | |
| 111 | /** What a subagent's shell command starts with to act as its session (see preToolUse), in Bash or PowerShell. */ |
| 112 | export function sessionPrefix(tool, session) { |
| 113 | return tool === "PowerShell" ? `$env:G1T_SESSION='${session}'; ` : `export G1T_SESSION=${session}; `; |
| 114 | } |
| 115 | |
| 116 | const PREFIX = /^(?:export G1T_SESSION=[A-Za-z0-9_]+; |\$env:G1T_SESSION='[A-Za-z0-9_]+'; )/; |
| 117 | |
| 118 | /** One line on what a tool was called with: never what it returned. */ |
| 119 | export function summarizeTool(name, input, cwd) { |
| 120 | const i = input && typeof input === "object" ? input : {}; |
| 121 | const path = (p) => { |
| 122 | if (typeof p !== "string") return ""; |
| 123 | return repoPath(p, cwd) ?? p; |
| 124 | }; |
| 125 | let what = ""; |
| 126 | if (typeof i.command === "string") { |
| 127 | // Without the session the plugin gave a subagent's command. |
| 128 | const command = i.command.replace(PREFIX, ""); |
| 129 | what = command.split("\n")[0] + (command.includes("\n") ? " …" : ""); |
| 130 | } |
| 131 | else if (i.file_path || i.notebook_path) what = path(i.file_path ?? i.notebook_path); |
| 132 | else if (typeof i.pattern === "string") what = `${i.pattern}${i.path ? ` in ${path(i.path)}` : ""}`; |
| 133 | else if (typeof i.url === "string") what = i.url; |
| 134 | else if (typeof i.query === "string") what = i.query; |
| 135 | else if (typeof i.description === "string") what = i.description; |
| 136 | else if (typeof i.action === "string") what = i.action; |
| 137 | const line = what ? `${name}: ${redact(what)}` : String(name); |
| 138 | return clip(line, SUMMARY_LIMIT); |
| 139 | } |
| 140 | |
| 141 | /** The issue a branch is for, when its name holds the number: 42-fix, issue-42, fix/42, g1t/42-x. */ |
| 142 | export function issueFromBranch(branch) { |
| 143 | if (!branch || branch === "HEAD") return null; |
| 144 | if (/^(release|releases|hotfix|v\d)/i.test(branch)) return null; |
| 145 | const match = /(?:^|[/_-])(?:issues?-?|#)?(\d{1,7})(?=$|[/_-])/i.exec(branch); |
| 146 | if (!match) return null; |
| 147 | const n = Number(match[1]); |
| 148 | return n > 0 ? n : null; |
| 149 | } |
| 150 | |
| 151 | /** The issue a shell command claims or attaches the session to, if any. */ |
| 152 | export function issueFromCommand(command) { |
| 153 | if (typeof command !== "string") return null; |
| 154 | const patterns = [ |
| 155 | /\bg1t\s+work\s+claim\s+#?(\d+)/, |
| 156 | /\bg1t\s+session\s+(?:start|attach)\b[^|;&\n]*--issue[= ]#?(\d+)/, |
| 157 | /\bg1t\s+pr\s+create\b[^|;&\n]*--issue[= ]#?(\d+)/, |
| 158 | ]; |
| 159 | for (const pattern of patterns) { |
| 160 | const match = pattern.exec(command); |
| 161 | if (match) return Number(match[1]); |
| 162 | } |
| 163 | return null; |
| 164 | } |
| 165 | |
| 166 | export const isGitPush = (command) => |
| 167 | typeof command === "string" && /(^|[\s;&|(])git(\s+-\S+(\s+[^-\s]\S*)?)*\s+push\b/.test(command); |
| 168 | |
| 169 | export const isGitCommit = (command) => |
| 170 | typeof command === "string" && /(^|[\s;&|(])git(\s+-\S+(\s+[^-\s]\S*)?)*\s+commit\b/.test(command); |
| 171 | |
| 172 | /** The branch a command makes: git checkout -b X, git switch -c X, git branch X. */ |
| 173 | export function branchFromCommand(command) { |
| 174 | if (typeof command !== "string") return null; |
| 175 | const match = |
| 176 | /\bgit\s+(?:checkout\s+-[bB]|switch\s+-[cC]|switch\s+--create)\s+([^\s;&|]+)/.exec(command) ?? |
| 177 | /\bgit\s+branch\s+(?!-)([^\s;&|]+)/.exec(command); |
| 178 | return match ? match[1] : null; |
| 179 | } |
| 180 | |
| 181 | /** A subagent's harness id: the parent's, `/agent/`, and its id without Claude Code's `agent-` prefix. */ |
| 182 | export function subagentHarnessId(parent, agentId) { |
| 183 | return `${String(parent).trim()}/agent/${String(agentId).trim().replace(/^agent-/, "")}`; |
| 184 | } |
| 185 | |
| 186 | /** The text of an Agent call's answer: its subagent's final message. */ |
| 187 | export function agentResult(response) { |
| 188 | const content = response?.content; |
| 189 | if (typeof content === "string") return content; |
| 190 | if (!Array.isArray(content)) return ""; |
| 191 | return content |
| 192 | .filter((block) => block && block.type === "text" && typeof block.text === "string") |
| 193 | .map((block) => block.text) |
| 194 | .join("\n") |
| 195 | .trim(); |
| 196 | } |
| 197 | |
| 198 | /** The plugin skill a prompt runs when it is typed as one: `g1t:work-on-issue` for `/g1t:work-on-issue 42`. */ |
| 199 | export function typedSkill(prompt) { |
| 200 | const text = String(prompt ?? "").replace(/^/, ""); |
| 201 | const match = /^\s*\/([A-Za-z0-9][\w.-]*:[A-Za-z0-9][\w.-]*)(?=\s|$)/.exec(text); |
| 202 | return match ? match[1] : null; |
| 203 | } |
| 204 | |
| 205 | /** |
| 206 | * A skill's step: its name only. `skill` keys it (see hook), so a skill |
| 207 | * typed as /g1t:name, which Claude Code may then also run as a Skill tool |
| 208 | * call, is recorded once in the turn. |
| 209 | */ |
| 210 | function skillStep(name) { |
| 211 | return { args: ["session", "log", "--kind", "skill", "--", clip(name, 100)], skill: name.replace(/^.*:/, "") }; |
| 212 | } |
| 213 | |
| 214 | /** The g1t MCP tool a call is to, by name: `issue` for mcp__plugin_g1t_g1t__issue or mcp__g1t__issue. */ |
| 215 | export function g1tTool(name) { |
| 216 | const match = /^mcp__(?:plugin_g1t_)?g1t__([a-z_]+)$/.exec(String(name ?? "")); |
| 217 | return match ? match[1] : null; |
| 218 | } |
| 219 | |
| 220 | /** |
| 221 | * What a hook event asks for: the CLI calls to run in the background |
| 222 | * (`steps`), whether to start the session first, and for a subagent's |
| 223 | * events, which subagent (`agent`). Pure, so the tests can check it |
| 224 | * without a CLI. |
| 225 | */ |
| 226 | export function plan(event, env = process.env) { |
| 227 | const name = event?.hook_event_name; |
| 228 | const sid = event?.session_id; |
| 229 | if (!name || !sid || env.G1T_RECORD === "0") return null; |
| 230 | const cwd = event.cwd || process.cwd(); |
| 231 | const job = { cwd, sid, steps: [] }; |
| 232 | // Inside a subagent, what it does is its own session's. |
| 233 | if (event.agent_id) job.agent = { id: String(event.agent_id), type: event.agent_type || null }; |
| 234 | switch (name) { |
| 235 | case "SessionStart": { |
| 236 | job.start = true; |
| 237 | const issue = Number(env.G1T_ISSUE); |
| 238 | if (issue > 0) job.issue = issue; |
| 239 | return job; |
| 240 | } |
| 241 | case "UserPromptSubmit": { |
| 242 | const prompt = typeof event.prompt === "string" ? event.prompt.replace(/^/, "") : ""; |
| 243 | // A turn Claude Code starts itself for a background task carries that |
| 244 | // task's output, which is never sent: it is not a prompt of yours. |
| 245 | if (!prompt.trim() || /^\s*<task-notification>/.test(prompt)) return null; |
| 246 | if (env.G1T_RECORD_PROMPTS !== "0") job.steps.push({ args: ["session", "log", "--kind", "prompt", "--", clip(prompt, PROMPT_LIMIT)] }); |
| 247 | // A skill typed as /plugin:name is a skill used (its name), whether or not prompts are sent. |
| 248 | const skill = typedSkill(prompt); |
| 249 | if (skill) job.steps.push(skillStep(skill)); |
| 250 | return job.steps.length ? job : null; |
| 251 | } |
| 252 | case "SubagentStart": |
| 253 | if (!job.agent) return null; |
| 254 | job.agent.start = true; |
| 255 | return job; |
| 256 | case "SubagentStop": { |
| 257 | if (!job.agent) return null; |
| 258 | const args = ["session", "end", "--reason", "done"]; |
| 259 | const result = typeof event.last_assistant_message === "string" ? event.last_assistant_message.trim() : ""; |
| 260 | // --flag=VALUE throughout for text: one that starts with a dash ("- Found …") is still a value. |
| 261 | if (result) args.push(`--result=${clip(result, RESULT_LIMIT)}`); |
| 262 | job.steps.push({ args }); |
| 263 | return job; |
| 264 | } |
| 265 | case "PostToolUse": { |
| 266 | if (!event.tool_name) return null; |
| 267 | const tool = event.tool_name; |
| 268 | const input = event.tool_input ?? {}; |
| 269 | if (tool === "Skill") { |
| 270 | const skill = typeof input.skill === "string" ? input.skill.trim() : ""; |
| 271 | if (!skill) return null; |
| 272 | // Its name, nothing more. |
| 273 | job.steps.push(skillStep(skill)); |
| 274 | return job; |
| 275 | } |
| 276 | job.steps.push({ args: ["session", "log", "--kind", "tool_call", "--", summarizeTool(tool, input, cwd)] }); |
| 277 | const touch = []; |
| 278 | if (WRITERS.has(tool)) { |
| 279 | const file = repoPath(input.file_path ?? input.notebook_path, cwd); |
| 280 | if (file) touch.push(`--file=${file}`); |
| 281 | } |
| 282 | if (AGENT_TOOLS.has(tool) && !job.agent) { |
| 283 | const response = event.tool_response ?? {}; |
| 284 | const agentId = response.agentId ?? response.agent_id; |
| 285 | if (agentId) { |
| 286 | job.subagent = { |
| 287 | id: String(agentId), |
| 288 | type: input.subagent_type || null, |
| 289 | task: input.description ? clip(input.description, TASK_LIMIT) : null, |
| 290 | prompt: env.G1T_RECORD_PROMPTS === "0" || !input.prompt ? null : clip(input.prompt, AGENT_PROMPT_LIMIT), |
| 291 | model: response.resolvedModel || null, |
| 292 | result: response.status === "completed" ? clip(agentResult(response), RESULT_LIMIT) || null : null, |
| 293 | }; |
| 294 | } |
| 295 | } |
| 296 | if (SHELL_TOOLS.has(tool)) { |
| 297 | const issue = issueFromCommand(input.command); |
| 298 | if (issue) { |
| 299 | job.issue = issue; |
| 300 | touch.push("--issue", String(issue)); |
| 301 | } |
| 302 | const branch = branchFromCommand(input.command); |
| 303 | if (branch) touch.push("--branch", branch); |
| 304 | if (isGitCommit(input.command)) job.steps.push({ touchHead: true }); |
| 305 | if (isGitPush(input.command)) job.steps.push({ headCommit: true }); |
| 306 | } |
| 307 | const claimed = g1tTool(tool) === "issue" && input.action === "claim" && Number(input.number) > 0 ? Number(input.number) : null; |
| 308 | if (claimed) { |
| 309 | job.issue = claimed; |
| 310 | touch.push("--issue", String(claimed)); |
| 311 | } |
| 312 | if (touch.length) job.steps.push({ args: ["session", "touch", ...touch] }); |
| 313 | return job; |
| 314 | } |
| 315 | case "Stop": |
| 316 | job.steps.push({ args: ["session", "heartbeat"] }); |
| 317 | return job; |
| 318 | case "SessionEnd": |
| 319 | job.steps.push({ args: ["session", "end", "--reason", String(event.reason || "other")] }); |
| 320 | job.end = true; |
| 321 | return job; |
| 322 | default: |
| 323 | return null; |
| 324 | } |
| 325 | } |
| 326 | |
| 327 | // --- the machine ------------------------------------------------------- |
| 328 | |
| 329 | function git(cwd, args) { |
| 330 | const out = spawnSync("git", args, { cwd, encoding: "utf8", windowsHide: true, timeout: 3000 }); |
| 331 | return out.status === 0 ? out.stdout.trim() : null; |
| 332 | } |
| 333 | |
| 334 | /** The g1t CLI on PATH, without running it. G1T_BIN names another. */ |
| 335 | export function findCli(env = process.env) { |
| 336 | if (env.G1T_BIN) return existsSync(env.G1T_BIN) ? env.G1T_BIN : null; |
| 337 | const names = process.platform === "win32" ? ["g1t.exe", "g1t"] : ["g1t"]; |
| 338 | for (const dir of (env.PATH ?? env.Path ?? "").split(delimiter)) { |
| 339 | if (!dir) continue; |
| 340 | for (const name of names) { |
| 341 | const candidate = join(dir.replace(/^"|"$/g, ""), name); |
| 342 | try { |
| 343 | if (statSync(candidate).isFile()) return candidate; |
| 344 | } catch {} |
| 345 | } |
| 346 | } |
| 347 | return null; |
| 348 | } |
| 349 | |
| 350 | /** Runs the CLI. A .js or .mjs G1T_BIN (the tests' stand-in) runs under Node. */ |
| 351 | function cli(bin, args, options) { |
| 352 | const script = /\.m?js$/.test(bin); |
| 353 | return spawnSync(script ? process.execPath : bin, script ? [bin, ...args] : args, { |
| 354 | encoding: "utf8", |
| 355 | windowsHide: true, |
| 356 | ...options, |
| 357 | }); |
| 358 | } |
| 359 | |
| 360 | /** Where the plugin keeps its state: Claude Code's data folder for it. */ |
| 361 | export function dataDir(env = process.env) { |
| 362 | return env.CLAUDE_PLUGIN_DATA || join(homedir(), ".g1t", "claude-code"); |
| 363 | } |
| 364 | |
| 365 | function readJson(path, fallback) { |
| 366 | try { |
| 367 | return JSON.parse(readFileSync(path, "utf8")); |
| 368 | } catch { |
| 369 | return fallback; |
| 370 | } |
| 371 | } |
| 372 | |
| 373 | function write(path, text) { |
| 374 | try { |
| 375 | mkdirSync(dirname(path), { recursive: true }); |
| 376 | writeFileSync(path, text); |
| 377 | } catch {} |
| 378 | } |
| 379 | |
| 380 | const readText = (path) => { |
| 381 | try { |
| 382 | return readFileSync(path, "utf8").trim() || null; |
| 383 | } catch { |
| 384 | return null; |
| 385 | } |
| 386 | }; |
| 387 | |
| 388 | const safeName = (text) => String(text).replace(/[^A-Za-z0-9_-]/g, "_"); |
| 389 | |
| 390 | /** |
| 391 | * This session's files: its marker (it is in a g1t working copy), its g1t |
| 392 | * session id, its issue, the Agent calls waiting for their subagents, and |
| 393 | * each subagent's g1t session id. |
| 394 | */ |
| 395 | export function sessionFiles(sid, env = process.env) { |
| 396 | const dir = join(dataDir(env), "sessions"); |
| 397 | const safe = safeName(sid); |
| 398 | return { |
| 399 | dir, |
| 400 | prefix: `${safe}.`, |
| 401 | marker: join(dir, `${safe}.json`), |
| 402 | id: join(dir, `${safe}.id`), |
| 403 | issue: join(dir, `${safe}.issue`), |
| 404 | turn: join(dir, `${safe}.turn`), |
| 405 | pending: join(dir, `${safe}.pending.json`), |
| 406 | agent: (agentId) => join(dir, `${safe}.agent.${safeName(String(agentId).replace(/^agent-/, ""))}.id`), |
| 407 | }; |
| 408 | } |
| 409 | |
| 410 | /** Forgets sessions untouched for a week (ones that never saw SessionEnd). */ |
| 411 | function prune(dir) { |
| 412 | try { |
| 413 | const cutoff = Date.now() - 7 * 24 * 3600 * 1000; |
| 414 | for (const name of readdirSync(dir)) { |
| 415 | const path = join(dir, name); |
| 416 | if (statSync(path).mtimeMs < cutoff) rmSync(path, { force: true }); |
| 417 | } |
| 418 | } catch {} |
| 419 | } |
| 420 | |
| 421 | // --- Agent calls and their subagents ----------------------------------- |
| 422 | |
| 423 | /** Keeps an Agent call's task until its subagent starts (PreToolUse). */ |
| 424 | export function rememberTask(files, input) { |
| 425 | const pending = readJson(files.pending, []); |
| 426 | pending.push({ |
| 427 | type: input?.subagent_type || null, |
| 428 | task: input?.description ? clip(input.description, TASK_LIMIT) : null, |
| 429 | prompt: input?.prompt ? clip(input.prompt, AGENT_PROMPT_LIMIT) : null, |
| 430 | at: Date.now(), |
| 431 | }); |
| 432 | // An Agent call refused or never started is forgotten after an hour. |
| 433 | write(files.pending, JSON.stringify(pending.filter((p) => Date.now() - p.at < 3600 * 1000).slice(-50))); |
| 434 | } |
| 435 | |
| 436 | /** The task of the oldest Agent call of `type` still waiting for its subagent, taken. */ |
| 437 | export function takeTask(files, type) { |
| 438 | const pending = readJson(files.pending, []); |
| 439 | const at = pending.findIndex((p) => !type || !p.type || p.type === type); |
| 440 | if (at < 0) return null; |
| 441 | const [task] = pending.splice(at, 1); |
| 442 | write(files.pending, JSON.stringify(pending)); |
| 443 | return task; |
| 444 | } |
| 445 | |
| 446 | // --- saying so once ---------------------------------------------------- |
| 447 | |
| 448 | const NOT_RECORDED = "g1t: this session is not being recorded on g1t, because"; |
| 449 | |
| 450 | const MESSAGES = { |
| 451 | missing: () => `${NOT_RECORDED} the g1t CLI is not installed. Install it (https://docs.g1t.sh/guides/cli/) and run \`g1t auth login\`. This is said once.`, |
| 452 | signed_out: () => `${NOT_RECORDED} the g1t CLI is not signed in. Run \`g1t auth login\`. This is said once.`, |
| 453 | outdated: (version) => |
| 454 | `${NOT_RECORDED} the g1t CLI is ${version}, and the plugin needs ${MIN_CLI} or later. Update it by running the installer again: ${INSTALL}. This is said once.`, |
| 455 | refused: (command) => |
| 456 | `${NOT_RECORDED} the g1t CLI refused \`g1t ${command}\`: it is older than the plugin, which needs ${MIN_CLI} or later. Update it by running the installer again: ${INSTALL}. This is said once.`, |
| 457 | old_node: (version) => |
| 458 | `${NOT_RECORDED} its hooks need Node ${MIN_NODE} or later, and \`node\` is ${version}. Install a current Node (https://nodejs.org) and start Claude Code again. This is said once.`, |
| 459 | }; |
| 460 | |
| 461 | /** Remembers a problem (missing, signed_out, outdated, refused, old_node) and what it was about, or that there is none (null). */ |
| 462 | export function setProblem(env, problem, detail = null) { |
| 463 | const path = join(dataDir(env), "notice.json"); |
| 464 | const notice = readJson(path, {}); |
| 465 | if ((notice.problem ?? null) === problem && (notice.detail ?? null) === detail) return; |
| 466 | write(path, JSON.stringify({ problem, detail, shown: false })); |
| 467 | } |
| 468 | |
| 469 | /** The message for a problem not shown yet, marking it shown. */ |
| 470 | export function takeNotice(env) { |
| 471 | const path = join(dataDir(env), "notice.json"); |
| 472 | const notice = readJson(path, {}); |
| 473 | if (!notice.problem || notice.shown || !MESSAGES[notice.problem]) return null; |
| 474 | write(path, JSON.stringify({ ...notice, shown: true })); |
| 475 | return MESSAGES[notice.problem](notice.detail); |
| 476 | } |
| 477 | |
| 478 | /** Whether version a (1.2.3) is older than b. */ |
| 479 | export function older(a, b) { |
| 480 | const pa = String(a).split(".").map(Number); |
| 481 | const pb = String(b).split(".").map(Number); |
| 482 | for (let i = 0; i < 3; i++) if ((pa[i] || 0) !== (pb[i] || 0)) return (pa[i] || 0) < (pb[i] || 0); |
| 483 | return false; |
| 484 | } |
| 485 | |
| 486 | /** |
| 487 | * The CLI's version, from `g1t --version`, asked once for each build of |
| 488 | * it: kept with the file's size and time, so updating it asks again. |
| 489 | * Null when it cannot be told. |
| 490 | */ |
| 491 | export function cliVersion(bin, env = process.env) { |
| 492 | let stamp; |
| 493 | try { |
| 494 | const stat = statSync(bin); |
| 495 | stamp = `${bin}|${stat.size}|${stat.mtimeMs}`; |
| 496 | } catch { |
| 497 | return null; |
| 498 | } |
| 499 | const path = join(dataDir(env), "cli.json"); |
| 500 | const kept = readJson(path, {}); |
| 501 | if (kept.stamp === stamp) return kept.version ?? null; |
| 502 | const out = cli(bin, ["--version"], { timeout: 5000, env }); |
| 503 | const version = out.status === 0 ? (/\b(\d+\.\d+\.\d+)\b/.exec(out.stdout ?? "")?.[1] ?? null) : null; |
| 504 | write(path, JSON.stringify({ stamp, version })); |
| 505 | return version; |
| 506 | } |
| 507 | |
| 508 | /** Whether a working copy's remotes are on g1t (g1t.sh, or G1T_HOST's host). */ |
| 509 | export function isG1tRemote(urls, env = process.env) { |
| 510 | if (env.G1T_REPO) return true; |
| 511 | const hosts = ["g1t.sh", env.G1T_HOST].filter(Boolean).map((h) => h.toLowerCase()); |
| 512 | return urls.some((url) => hosts.some((host) => url.toLowerCase().includes(host))); |
| 513 | } |
| 514 | |
| 515 | // --- the background half ----------------------------------------------- |
| 516 | |
| 517 | /** Hands a job to a detached copy of this script and returns at once. */ |
| 518 | function background(job, env = process.env) { |
| 519 | const payload = Buffer.from(JSON.stringify(job)).toString("base64url"); |
| 520 | try { |
| 521 | const child = spawn(process.execPath, [SELF, "--worker", payload], { |
| 522 | cwd: job.cwd, |
| 523 | detached: true, |
| 524 | stdio: "ignore", |
| 525 | windowsHide: true, |
| 526 | env, |
| 527 | }); |
| 528 | child.on("error", () => {}); |
| 529 | child.unref(); |
| 530 | } catch {} |
| 531 | } |
| 532 | |
| 533 | /** The session id in a `g1t session start --json` answer. */ |
| 534 | function startedId(out) { |
| 535 | try { |
| 536 | return JSON.parse(out.stdout).id ?? null; |
| 537 | } catch { |
| 538 | return /\bses_[A-Za-z0-9]+/.exec(out.stdout ?? "")?.[0] ?? null; |
| 539 | } |
| 540 | } |
| 541 | |
| 542 | /** |
| 543 | * Starts a subagent's session under `parentId` (again, when it was: the |
| 544 | * same session comes back, taking what is newly said), and keeps its id. |
| 545 | */ |
| 546 | function startSubagent(bin, job, files, agent, parentId, opts) { |
| 547 | const args = [ |
| 548 | "session", |
| 549 | "start", |
| 550 | "--harness", |
| 551 | "claude_code", |
| 552 | "--harness-session-id", |
| 553 | subagentHarnessId(job.sid, agent.id), |
| 554 | "--parent", |
| 555 | parentId, |
| 556 | "--no-remember", |
| 557 | ]; |
| 558 | if (agent.type) args.push(`--agent-type=${agent.type}`); |
| 559 | if (agent.task) args.push(`--task=${agent.task}`); |
| 560 | if (agent.prompt) args.push(`--prompt=${agent.prompt}`); |
| 561 | if (agent.model) args.push(`--model=${agent.model}`); |
| 562 | args.push("--json"); |
| 563 | const out = cli(bin, args, { ...opts, env: { ...opts.env, G1T_SESSION: parentId } }); |
| 564 | if (out.status === EXIT_AUTH) return { auth: true }; |
| 565 | if (out.status === EXIT_USAGE) return { refused: "session start" }; |
| 566 | const id = out.status === 0 ? startedId(out) : null; |
| 567 | if (id) write(files.agent(agent.id), id); |
| 568 | return { id }; |
| 569 | } |
| 570 | |
| 571 | /** Starts the session if it needs to, then runs the job's steps in order. */ |
| 572 | export function work(job, env = process.env) { |
| 573 | const bin = findCli(env); |
| 574 | if (!bin) return setProblem(env, "missing"); |
| 575 | // An older CLI refuses some of what the hooks send: nothing is sent to it. |
| 576 | const version = cliVersion(bin, env); |
| 577 | if (version && older(version, MIN_CLI)) return setProblem(env, "outdated", version); |
| 578 | const files = sessionFiles(job.sid, env); |
| 579 | if (job.issue && !job.agent) write(files.issue, String(job.issue)); |
| 580 | const opts = { cwd: job.cwd, timeout: 20000, env: { ...env } }; |
| 581 | let id = readText(files.id); |
| 582 | if (job.start || !id) { |
| 583 | const issue = job.issue ?? readText(files.issue); |
| 584 | const args = ["session", "start", "--harness", "claude_code", "--harness-session-id", job.sid]; |
| 585 | if (issue) args.push("--issue", String(issue)); |
| 586 | args.push("--json"); |
| 587 | const out = cli(bin, args, opts); |
| 588 | if (out.status === EXIT_AUTH) return setProblem(env, "signed_out"); |
| 589 | if (out.status === EXIT_USAGE) return setProblem(env, "refused", "session start"); |
| 590 | if (out.status !== 0) return; |
| 591 | setProblem(env, null); |
| 592 | id = startedId(out); |
| 593 | if (!id) return; |
| 594 | write(files.id, id); |
| 595 | if (job.envFile && /^[A-Za-z0-9_]+$/.test(id)) { |
| 596 | // Claude's own g1t commands act in this session, not another one in |
| 597 | // the same working copy. A plain assignment, which Claude Code gives |
| 598 | // PowerShell commands too; it reads the file at the session's first |
| 599 | // command, so a command before this (rare: it is the first second) |
| 600 | // uses the working copy's remembered session. |
| 601 | try { |
| 602 | writeFileSync(job.envFile, `export G1T_SESSION=${id}\n`, { flag: "a" }); |
| 603 | } catch {} |
| 604 | } |
| 605 | } |
| 606 | // A subagent's events go to its own session, started first if need be. |
| 607 | let session = id; |
| 608 | if (job.agent) { |
| 609 | let child = readText(files.agent(job.agent.id)); |
| 610 | if (job.agent.start || !child) { |
| 611 | const started = startSubagent(bin, job, files, job.agent, id, opts); |
| 612 | if (started.auth) return setProblem(env, "signed_out"); |
| 613 | if (started.refused) return setProblem(env, "refused", started.refused); |
| 614 | child = started.id ?? child; |
| 615 | } |
| 616 | if (!child) return; |
| 617 | session = child; |
| 618 | } |
| 619 | opts.env.G1T_SESSION = session; |
| 620 | for (const step of job.steps) { |
| 621 | if (step.args) { |
| 622 | const args = step.key ? [...step.args.slice(0, -2), `--key=${step.key}`, ...step.args.slice(-2)] : step.args; |
| 623 | const out = cli(bin, args, opts); |
| 624 | if (out.status === EXIT_AUTH) return setProblem(env, "signed_out"); |
| 625 | if (out.status === EXIT_USAGE) return setProblem(env, "refused", step.args.slice(0, 2).join(" ")); |
| 626 | } else if (step.headCommit) { |
| 627 | // Only once the push reached the remote: HEAD is on a remote branch. |
| 628 | const head = git(job.cwd, ["rev-parse", "HEAD"]); |
| 629 | const remote = git(job.cwd, ["branch", "-r", "--contains", "HEAD"]); |
| 630 | if (head && remote) { |
| 631 | cli(bin, ["api", "update_session", "-f", `id=${session}`, "-f", `head_commit=${head}`, "--silent"], opts); |
| 632 | const branch = git(job.cwd, ["rev-parse", "--abbrev-ref", "HEAD"]); |
| 633 | const touch = ["session", "touch", "--commit", head]; |
| 634 | if (branch && branch !== "HEAD") touch.push("--branch", branch); |
| 635 | cli(bin, touch, opts); |
| 636 | } |
| 637 | } else if (step.touchHead) { |
| 638 | const head = git(job.cwd, ["rev-parse", "HEAD"]); |
| 639 | if (head) cli(bin, ["session", "touch", "--commit", head], opts); |
| 640 | } |
| 641 | } |
| 642 | // An Agent call answered: its subagent has its task, and once it |
| 643 | // finished, what it reported. |
| 644 | if (job.subagent) { |
| 645 | const started = startSubagent(bin, job, files, job.subagent, id, opts); |
| 646 | if (started.id && job.subagent.result) { |
| 647 | cli(bin, ["session", "end", "--reason", "done", `--result=${job.subagent.result}`], { ...opts, env: { ...opts.env, G1T_SESSION: started.id } }); |
| 648 | } |
| 649 | } |
| 650 | if (job.end) { |
| 651 | try { |
| 652 | for (const name of readdirSync(files.dir)) if (name.startsWith(files.prefix)) rmSync(join(files.dir, name), { force: true }); |
| 653 | } catch {} |
| 654 | } |
| 655 | } |
| 656 | |
| 657 | // --- the hooks --------------------------------------------------------- |
| 658 | |
| 659 | /** What every session is told about trailers, so commits find their way back. */ |
| 660 | const TRAILER = "Add the trailer `G1t-Session: $G1T_SESSION` to the commits you make (git commit --trailer), so g1t ties them to this session."; |
| 661 | |
| 662 | /** |
| 663 | * SessionStart: marks the session as one in a g1t working copy, and |
| 664 | * returns what to print: context for Claude, and a notice for you, once. |
| 665 | * Null outside a g1t working copy, where nothing is recorded. |
| 666 | */ |
| 667 | export function sessionStart(event, env = process.env, bin = findCli(env)) { |
| 668 | const cwd = event.cwd || process.cwd(); |
| 669 | const gitDir = git(cwd, ["rev-parse", "--absolute-git-dir"]); |
| 670 | if (!gitDir) return null; |
| 671 | // The branch, from HEAD itself: also on a branch with no commits yet. |
| 672 | const branch = /^ref: refs\/heads\/(.+)$/m.exec(readText(join(gitDir, "HEAD")) ?? "")?.[1] ?? null; |
| 673 | const urls = (git(cwd, ["config", "--get-regexp", "^remote\\..*\\.url$"]) ?? "").split(/\r?\n/); |
| 674 | if (!isG1tRemote(urls, env)) return null; |
| 675 | |
| 676 | const files = sessionFiles(event.session_id, env); |
| 677 | prune(files.dir); |
| 678 | write(files.marker, JSON.stringify({ cwd, git_dir: gitDir })); |
| 679 | |
| 680 | const output = {}; |
| 681 | if (!bin) setProblem(env, "missing"); |
| 682 | const notice = takeNotice(env); |
| 683 | if (notice) output.systemMessage = notice; |
| 684 | if (!bin) return output; |
| 685 | |
| 686 | const remembered = Number(readText(files.issue)) || null; |
| 687 | const handedOff = Number(env.G1T_ISSUE) || null; |
| 688 | const issue = remembered ?? handedOff ?? issueFromBranch(branch); |
| 689 | let context; |
| 690 | if (issue) { |
| 691 | const where = remembered ? "this session's claim" : handedOff ? "the work handed to it" : `the branch ${branch}`; |
| 692 | const out = cli(bin, ["work", "context", String(issue)], { cwd, timeout: CONTEXT_WAIT_MS, env }); |
| 693 | if (out.status === 0 && out.stdout.trim()) { |
| 694 | context = `g1t: this session is working on issue #${issue} (from ${where}). Its work context on g1t:\n\n${clip(out.stdout.trim(), CONTEXT_LIMIT)}\n\nIf it is not claimed by this session yet, claim it with \`g1t work claim ${issue}\` before you start. ${TRAILER}`; |
| 695 | } else if (out.status === EXIT_AUTH) { |
| 696 | setProblem(env, "signed_out"); |
| 697 | const now = takeNotice(env); |
| 698 | if (now) output.systemMessage = now; |
| 699 | } else { |
| 700 | context = `g1t: ${where} points at issue #${issue}. Load what is known about it with \`g1t work context ${issue}\`, and claim it with \`g1t work claim ${issue}\` before you start. ${TRAILER}`; |
| 701 | } |
| 702 | } else { |
| 703 | context = `g1t: this is a g1t repository. Before starting on an issue, load it with \`g1t work context N\` and claim it with \`g1t work claim N\`, so the people and agents also working here know. ${TRAILER}`; |
| 704 | } |
| 705 | if (context) output.hookSpecificOutput = { hookEventName: "SessionStart", additionalContext: context }; |
| 706 | return output; |
| 707 | } |
| 708 | |
| 709 | /** What a subagent is told as it starts: it is a session of its own, beside its siblings. */ |
| 710 | export function subagentContext(issue) { |
| 711 | const on = issue ? ` on issue #${issue}` : ""; |
| 712 | const see = issue |
| 713 | ? `Before you change anything, run \`g1t work context ${issue}\` and \`g1t session list --issue ${issue} --subagents\`: other subagents of the same session may be on it, and you see what each touches.` |
| 714 | : "Before you change anything, run `g1t session list --subagents` to see the other subagents at work here."; |
| 715 | return `g1t: you are a subagent of a session recorded on g1t${on}, and g1t records you as a session of your own under it: the g1t commands and g1t tools you use act as that session. ${see} Claim only the issue you take on (\`g1t work claim N --note "what you are doing"\`), and if g1t reports an overlap with another session, settle it before going on. ${TRAILER}`; |
| 716 | } |
| 717 | |
| 718 | /** |
| 719 | * PreToolUse: an Agent call's task is kept for its subagent; inside a |
| 720 | * subagent, its g1t commands and g1t claims act as its own session. |
| 721 | * Returns what to print, or null. |
| 722 | */ |
| 723 | export function preToolUse(event, env = process.env) { |
| 724 | const files = sessionFiles(event.session_id, env); |
| 725 | const tool = event.tool_name; |
| 726 | const input = event.tool_input ?? {}; |
| 727 | if (AGENT_TOOLS.has(tool) && !event.agent_id) { |
| 728 | rememberTask(files, input); |
| 729 | return null; |
| 730 | } |
| 731 | const session = event.agent_id ? readText(files.agent(event.agent_id)) : readText(files.id); |
| 732 | if (!session) return null; |
| 733 | let updated = null; |
| 734 | const command = typeof input.command === "string" ? input.command : ""; |
| 735 | const namesG1t = /\bg1t(?:\.exe)?\s/.test(command) || /G1T_SESSION\b/.test(command); |
| 736 | const setsIt = /G1T_SESSION\s*=/.test(command); |
| 737 | // A subagent's g1t commands act as its own session. Only these commands |
| 738 | // are changed. Claude Code checks its permission rules against the |
| 739 | // changed command; no permission decision is made here. |
| 740 | if (SHELL_TOOLS.has(tool) && event.agent_id && namesG1t && !setsIt && /^[A-Za-z0-9_]+$/.test(session)) { |
| 741 | updated = { ...input, command: `${sessionPrefix(tool, session)}${input.command}` }; |
| 742 | } |
| 743 | const g1t = g1tTool(tool); |
| 744 | if (g1t === "issue" && ["claim", "release", "handoff"].includes(input.action) && !input.session_id) { |
| 745 | updated = { ...input, session_id: session }; |
| 746 | } |
| 747 | return updated ? { hookSpecificOutput: { hookEventName: "PreToolUse", updatedInput: updated } } : null; |
| 748 | } |
| 749 | |
| 750 | /** Runs one hook: what it prints, and the job it hands to the background. */ |
| 751 | export function hook(event, env = process.env) { |
| 752 | if (env.G1T_RECORD === "0") return { output: null, job: null }; |
| 753 | const name = event?.hook_event_name; |
| 754 | if (name === "PreToolUse") { |
| 755 | if (!event.session_id || !existsSync(sessionFiles(event.session_id, env).marker)) return { output: null, job: null }; |
| 756 | return { output: preToolUse(event, env), job: null }; |
| 757 | } |
| 758 | // Each prompt is a turn; a skill is recorded once in a turn, however it was run. |
| 759 | const files = event?.session_id ? sessionFiles(event.session_id, env) : null; |
| 760 | let turn = files ? Number(readText(files.turn)) || 0 : 0; |
| 761 | if (name === "UserPromptSubmit" && files && existsSync(files.marker)) write(files.turn, String(++turn)); |
| 762 | const job = plan(event, env); |
| 763 | if (!job) return { output: null, job: null }; |
| 764 | if (name === "SessionStart") { |
| 765 | const bin = findCli(env); |
| 766 | const output = sessionStart(event, env, bin); |
| 767 | if (!output) return { output: null, job: null }; |
| 768 | if (env.CLAUDE_ENV_FILE) job.envFile = env.CLAUDE_ENV_FILE; |
| 769 | return { output: Object.keys(output).length ? output : null, job: bin ? job : null }; |
| 770 | } |
| 771 | // Only sessions SessionStart found in a g1t working copy are recorded. |
| 772 | if (!existsSync(files.marker) || !findCli(env)) return { output: null, job: null }; |
| 773 | for (const step of job.steps) if (step.skill) step.key = `skill:${safeName(step.skill)}:${turn}`; |
| 774 | if (name === "SubagentStart") { |
| 775 | const task = takeTask(files, job.agent.type); |
| 776 | if (task) Object.assign(job.agent, { task: task.task, prompt: env.G1T_RECORD_PROMPTS === "0" ? null : task.prompt }); |
| 777 | const issue = Number(readText(files.issue)) || null; |
| 778 | return { output: { hookSpecificOutput: { hookEventName: "SubagentStart", additionalContext: subagentContext(issue) } }, job }; |
| 779 | } |
| 780 | const notice = name === "UserPromptSubmit" ? takeNotice(env) : null; |
| 781 | return { output: notice ? { systemMessage: notice } : null, job }; |
| 782 | } |
| 783 | |
| 784 | /** |
| 785 | * On a Node older than MIN_NODE, nothing is recorded: what to print (the |
| 786 | * notice, once, at a session's start or a prompt), or null. Undefined on a |
| 787 | * current Node. |
| 788 | */ |
| 789 | export function oldNode(event, env = process.env, version = process.versions.node) { |
| 790 | if (Number(String(version).split(".")[0]) >= MIN_NODE) return undefined; |
| 791 | if (env.G1T_RECORD === "0" || !["SessionStart", "UserPromptSubmit"].includes(event?.hook_event_name)) return null; |
| 792 | setProblem(env, "old_node", `v${version}`); |
| 793 | const notice = takeNotice(env); |
| 794 | return notice ? { systemMessage: notice } : null; |
| 795 | } |
| 796 | |
| 797 | async function main() { |
| 798 | if (process.argv[2] === "--worker") { |
| 799 | work(JSON.parse(Buffer.from(process.argv[3], "base64url").toString("utf8"))); |
| 800 | return; |
| 801 | } |
| 802 | let raw = ""; |
| 803 | for await (const chunk of process.stdin) raw += chunk; |
| 804 | const event = JSON.parse(raw || "{}"); |
| 805 | const old = oldNode(event); |
| 806 | if (old !== undefined) { |
| 807 | if (old) process.stdout.write(JSON.stringify(old)); |
| 808 | return; |
| 809 | } |
| 810 | const { output, job } = hook(event); |
| 811 | if (output) process.stdout.write(JSON.stringify(output)); |
| 812 | if (job) background(job); |
| 813 | } |
| 814 | |
| 815 | if (process.argv[1] && resolve(process.argv[1]) === SELF) { |
| 816 | main() |
| 817 | .catch(() => {}) |
| 818 | .finally(() => process.exit(0)); |
| 819 | } |