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import path from "path"
import { exec } from "child_process"
import { Filesystem } from "../../util/filesystem"
import * as prompts from "@clack/prompts"
import { map, pipe, sortBy, values } from "remeda"
import { Octokit } from "@octokit/rest"
import { graphql } from "@octokit/graphql"
import * as core from "@actions/core"
import * as github from "@actions/github"
import type { Context } from "@actions/github/lib/context"
import type {
IssueCommentEvent,
IssuesEvent,
PullRequestReviewCommentEvent,
WorkflowDispatchEvent,
WorkflowRunEvent,
PullRequestEvent,
} from "@octokit/webhooks-types"
import { UI } from "../ui"
import { cmd } from "./cmd"
import { ModelsDev } from "../../provider/models"
import { Instance } from "@/project/instance"
import { bootstrap } from "../bootstrap"
import { Session } from "../../session"
import { Identifier } from "../../id/id"
import { Provider } from "../../provider/provider"
import { Bus } from "../../bus"
import { MessageV2 } from "../../session/message-v2"
import { SessionPrompt } from "@/session/prompt"
import { $ } from "bun"
type GitHubAuthor = {
login: string
name?: string
}
type GitHubComment = {
id: string
databaseId: string
body: string
author: GitHubAuthor
createdAt: string
}
type GitHubReviewComment = GitHubComment & {
path: string
line: number | null
}
type GitHubCommit = {
oid: string
message: string
author: {
name: string
email: string
}
}
type GitHubFile = {
path: string
additions: number
deletions: number
changeType: string
}
type GitHubReview = {
id: string
databaseId: string
author: GitHubAuthor
body: string
state: string
submittedAt: string
comments: {
nodes: GitHubReviewComment[]
}
}
type GitHubPullRequest = {
title: string
body: string
author: GitHubAuthor
baseRefName: string
headRefName: string
headRefOid: string
createdAt: string
additions: number
deletions: number
state: string
baseRepository: {
nameWithOwner: string
}
headRepository: {
nameWithOwner: string
}
commits: {
totalCount: number
nodes: Array<{
commit: GitHubCommit
}>
}
files: {
nodes: GitHubFile[]
}
comments: {
nodes: GitHubComment[]
}
reviews: {
nodes: GitHubReview[]
}
}
type GitHubIssue = {
title: string
body: string
author: GitHubAuthor
createdAt: string
state: string
comments: {
nodes: GitHubComment[]
}
}
type PullRequestQueryResponse = {
repository: {
pullRequest: GitHubPullRequest
}
}
type IssueQueryResponse = {
repository: {
issue: GitHubIssue
}
}
const AGENT_USERNAME = "opencode-agent[bot]"
const AGENT_REACTION = "eyes"
const WORKFLOW_FILE = ".github/workflows/opencode.yml"
// Event categories for routing
// USER_EVENTS: triggered by user actions, have actor/issueId, support reactions/comments
// REPO_EVENTS: triggered by automation, no actor/issueId, output to logs/PR only
const USER_EVENTS = ["issue_comment", "pull_request_review_comment", "issues", "pull_request"] as const
const REPO_EVENTS = ["schedule", "workflow_dispatch"] as const
const SUPPORTED_EVENTS = [...USER_EVENTS, ...REPO_EVENTS] as const
type UserEvent = (typeof USER_EVENTS)[number]
type RepoEvent = (typeof REPO_EVENTS)[number]
// Parses GitHub remote URLs in various formats:
// - https://github.com/owner/repo.git
// - https://github.com/owner/repo
// - git@github.com:owner/repo.git
// - git@github.com:owner/repo
// - ssh://git@github.com/owner/repo.git
// - ssh://git@github.com/owner/repo
export function parseGitHubRemote(url: string): { owner: string; repo: string } | null {
const match = url.match(/^(?:(?:https?|ssh):\/\/)?(?:git@)?github\.com[:/]([^/]+)\/([^/]+?)(?:\.git)?$/)
if (!match) return null
return { owner: match[1], repo: match[2] }
}
/**
* Extracts displayable text from assistant response parts.
* Returns null for non-text responses (signals summary needed).
* Throws only for truly empty responses.
*/
export function extractResponseText(parts: MessageV2.Part[]): string | null {
const textPart = parts.findLast((p) => p.type === "text")
if (textPart) return textPart.text
// Non-text parts (tools, reasoning, step-start/step-finish, etc.) - signal summary needed
if (parts.length > 0) return null
throw new Error("Failed to parse response: no parts returned")
}
/**
* Formats a PROMPT_TOO_LARGE error message with details about files in the prompt.
* Content is base64 encoded, so we calculate original size by multiplying by 0.75.
*/
export function formatPromptTooLargeError(files: { filename: string; content: string }[]): string {
const fileDetails =
files.length > 0
? `\n\nFiles in prompt:\n${files.map((f) => ` - ${f.filename} (${((f.content.length * 0.75) / 1024).toFixed(0)} KB)`).join("\n")}`
: ""
return `PROMPT_TOO_LARGE: The prompt exceeds the model's context limit.${fileDetails}`
}
export const GithubCommand = cmd({
command: "github",
describe: "manage GitHub agent",
builder: (yargs) => yargs.command(GithubInstallCommand).command(GithubRunCommand).demandCommand(),
async handler() {},
})
export const GithubInstallCommand = cmd({
command: "install",
describe: "install the GitHub agent",
async handler() {
await Instance.provide({
directory: process.cwd(),
async fn() {
{
UI.empty()
prompts.intro("Install GitHub agent")
const app = await getAppInfo()
await installGitHubApp()
const providers = await ModelsDev.get().then((p) => {
// TODO: add guide for copilot, for now just hide it
delete p["github-copilot"]
return p
})
const provider = await promptProvider()
const model = await promptModel()
//const key = await promptKey()
await addWorkflowFiles()
printNextSteps()
function printNextSteps() {
let step2
if (provider === "amazon-bedrock") {
step2 =
"Configure OIDC in AWS - https://docs.github.com/en/actions/how-tos/security-for-github-actions/security-hardening-your-deployments/configuring-openid-connect-in-amazon-web-services"
} else {
step2 = [
` 2. Add the following secrets in org or repo (${app.owner}/${app.repo}) settings`,
"",
...providers[provider].env.map((e) => ` - ${e}`),
].join("\n")
}
prompts.outro(
[
"Next steps:",
"",
` 1. Commit the \`${WORKFLOW_FILE}\` file and push`,
step2,
"",
" 3. Go to a GitHub issue and comment `/oc summarize` to see the agent in action",
"",
" Learn more about the GitHub agent - https://opencode.ai/docs/github/#usage-examples",
].join("\n"),
)
}
async function getAppInfo() {
const project = Instance.project
if (project.vcs !== "git") {
prompts.log.error(`Could not find git repository. Please run this command from a git repository.`)
throw new UI.CancelledError()
}
// Get repo info
const info = (await $`git remote get-url origin`.quiet().nothrow().text()).trim()
const parsed = parseGitHubRemote(info)
if (!parsed) {
prompts.log.error(`Could not find git repository. Please run this command from a git repository.`)
throw new UI.CancelledError()
}
return { owner: parsed.owner, repo: parsed.repo, root: Instance.worktree }
}
async function promptProvider() {
const priority: Record<string, number> = {
opencode: 0,
anthropic: 1,
openai: 2,
google: 3,
}
let provider = await prompts.select({
message: "Select provider",
maxItems: 8,
options: pipe(
providers,
values(),
sortBy(
(x) => priority[x.id] ?? 99,
(x) => x.name ?? x.id,
),
map((x) => ({
label: x.name,
value: x.id,
hint: priority[x.id] === 0 ? "recommended" : undefined,
})),
),
})
if (prompts.isCancel(provider)) throw new UI.CancelledError()
return provider
}
async function promptModel() {
const providerData = providers[provider]!
const model = await prompts.select({
message: "Select model",
maxItems: 8,
options: pipe(
providerData.models,
values(),
sortBy((x) => x.name ?? x.id),
map((x) => ({
label: x.name ?? x.id,
value: x.id,
})),
),
})
if (prompts.isCancel(model)) throw new UI.CancelledError()
return model
}
async function installGitHubApp() {
const s = prompts.spinner()
s.start("Installing GitHub app")
// Get installation
const installation = await getInstallation()
if (installation) return s.stop("GitHub app already installed")
// Open browser
const url = "https://github.com/apps/opencode-agent"
const command =
process.platform === "darwin"
? `open "${url}"`
: process.platform === "win32"
? `start "" "${url}"`
: `xdg-open "${url}"`
exec(command, (error) => {
if (error) {
prompts.log.warn(`Could not open browser. Please visit: ${url}`)
}
})
// Wait for installation
s.message("Waiting for GitHub app to be installed")
const MAX_RETRIES = 120
let retries = 0
do {
const installation = await getInstallation()
if (installation) break
if (retries > MAX_RETRIES) {
s.stop(
`Failed to detect GitHub app installation. Make sure to install the app for the \`${app.owner}/${app.repo}\` repository.`,
)
throw new UI.CancelledError()
}
retries++
await Bun.sleep(1000)
} while (true)
s.stop("Installed GitHub app")
async function getInstallation() {
return await fetch(
`https://api.opencode.ai/get_github_app_installation?owner=${app.owner}&repo=${app.repo}`,
)
.then((res) => res.json())
.then((data) => data.installation)
}
}
async function addWorkflowFiles() {
const envStr =
provider === "amazon-bedrock"
? ""
: `\n env:${providers[provider].env.map((e) => `\n ${e}: \${{ secrets.${e} }}`).join("")}`
await Filesystem.write(
path.join(app.root, WORKFLOW_FILE),
`name: opencode
on:
issue_comment:
types: [created]
pull_request_review_comment:
types: [created]
jobs:
opencode:
if: |
contains(github.event.comment.body, ' /oc') ||
startsWith(github.event.comment.body, '/oc') ||
contains(github.event.comment.body, ' /opencode') ||
startsWith(github.event.comment.body, '/opencode')
runs-on: ubuntu-latest
permissions:
id-token: write
contents: read
pull-requests: read
issues: read
steps:
- name: Checkout repository
uses: actions/checkout@v6
with:
persist-credentials: false
- name: Run opencode
uses: anomalyco/opencode/github@latest${envStr}
with:
model: ${provider}/${model}`,
)
prompts.log.success(`Added workflow file: "${WORKFLOW_FILE}"`)
}
}
},
})
},
})
export const GithubRunCommand = cmd({
command: "run",
describe: "run the GitHub agent",
builder: (yargs) =>
yargs
.option("event", {
type: "string",
describe: "GitHub mock event to run the agent for",
})
.option("token", {
type: "string",
describe: "GitHub personal access token (github_pat_********)",
}),
async handler(args) {
await bootstrap(process.cwd(), async () => {
const isMock = args.token || args.event
const context = isMock ? (JSON.parse(args.event!) as Context) : github.context
if (!SUPPORTED_EVENTS.includes(context.eventName as (typeof SUPPORTED_EVENTS)[number])) {
core.setFailed(`Unsupported event type: ${context.eventName}`)
process.exit(1)
}
// Determine event category for routing
// USER_EVENTS: have actor, issueId, support reactions/comments
// REPO_EVENTS: no actor/issueId, output to logs/PR only
const isUserEvent = USER_EVENTS.includes(context.eventName as UserEvent)
const isRepoEvent = REPO_EVENTS.includes(context.eventName as RepoEvent)
const isCommentEvent = ["issue_comment", "pull_request_review_comment"].includes(context.eventName)
const isIssuesEvent = context.eventName === "issues"
const isScheduleEvent = context.eventName === "schedule"
const isWorkflowDispatchEvent = context.eventName === "workflow_dispatch"
const { providerID, modelID } = normalizeModel()
const runId = normalizeRunId()
const share = normalizeShare()
const oidcBaseUrl = normalizeOidcBaseUrl()
const { owner, repo } = context.repo
// For repo events (schedule, workflow_dispatch), payload has no issue/comment data
const payload = context.payload as
| IssueCommentEvent
| IssuesEvent
| PullRequestReviewCommentEvent
| WorkflowDispatchEvent
| WorkflowRunEvent
| PullRequestEvent
const issueEvent = isIssueCommentEvent(payload) ? payload : undefined
// workflow_dispatch has an actor (the user who triggered it), schedule does not
const actor = isScheduleEvent ? undefined : context.actor
const issueId = isRepoEvent
? undefined
: context.eventName === "issue_comment" || context.eventName === "issues"
? (payload as IssueCommentEvent | IssuesEvent).issue.number
: (payload as PullRequestEvent | PullRequestReviewCommentEvent).pull_request.number
const runUrl = `/${owner}/${repo}/actions/runs/${runId}`
const shareBaseUrl = isMock ? "https://dev.opencode.ai" : "https://opencode.ai"
let appToken: string
let octoRest: Octokit
let octoGraph: typeof graphql
let gitConfig: string
let session: { id: string; title: string; version: string }
let shareId: string | undefined
let exitCode = 0
type PromptFiles = Awaited<ReturnType<typeof getUserPrompt>>["promptFiles"]
const triggerCommentId = isCommentEvent
? (payload as IssueCommentEvent | PullRequestReviewCommentEvent).comment.id
: undefined
const useGithubToken = normalizeUseGithubToken()
const commentType = isCommentEvent
? context.eventName === "pull_request_review_comment"
? "pr_review"
: "issue"
: undefined
try {
if (useGithubToken) {
const githubToken = process.env["GITHUB_TOKEN"]
if (!githubToken) {
throw new Error(
"GITHUB_TOKEN environment variable is not set. When using use_github_token, you must provide GITHUB_TOKEN.",
)
}
appToken = githubToken
} else {
const actionToken = isMock ? args.token! : await getOidcToken()
appToken = await exchangeForAppToken(actionToken)
}
octoRest = new Octokit({ auth: appToken })
octoGraph = graphql.defaults({
headers: { authorization: `token ${appToken}` },
})
const { userPrompt, promptFiles } = await getUserPrompt()
if (!useGithubToken) {
await configureGit(appToken)
}
// Skip permission check and reactions for repo events (no actor to check, no issue to react to)
if (isUserEvent) {
await assertPermissions()
await addReaction(commentType)
}
// Setup opencode session
const repoData = await fetchRepo()
session = await Session.create({
permission: [
{
permission: "question",
action: "deny",
pattern: "*",
},
],
})
subscribeSessionEvents()
shareId = await (async () => {
if (share === false) return
if (!share && repoData.data.private) return
await Session.share(session.id)
return session.id.slice(-8)
})()
console.log("opencode session", session.id)
// Handle event types:
// REPO_EVENTS (schedule, workflow_dispatch): no issue/PR context, output to logs/PR only
// USER_EVENTS on PR (pull_request, pull_request_review_comment, issue_comment on PR): work on PR branch
// USER_EVENTS on Issue (issue_comment on issue, issues): create new branch, may create PR
if (isRepoEvent) {
// Repo event - no issue/PR context, output goes to logs
if (isWorkflowDispatchEvent && actor) {
console.log(`Triggered by: ${actor}`)
}
const branchPrefix = isWorkflowDispatchEvent ? "dispatch" : "schedule"
const branch = await checkoutNewBranch(branchPrefix)
const head = (await $`git rev-parse HEAD`).stdout.toString().trim()
const response = await chat(userPrompt, promptFiles)
const { dirty, uncommittedChanges } = await branchIsDirty(head)
if (dirty) {
const summary = await summarize(response)
// workflow_dispatch has an actor for co-author attribution, schedule does not
await pushToNewBranch(summary, branch, uncommittedChanges, isScheduleEvent)
const triggerType = isWorkflowDispatchEvent ? "workflow_dispatch" : "scheduled workflow"
const pr = await createPR(
repoData.data.default_branch,
branch,
summary,
`${response}\n\nTriggered by ${triggerType}${footer({ image: true })}`,
)
console.log(`Created PR #${pr}`)
} else {
console.log("Response:", response)
}
} else if (
["pull_request", "pull_request_review_comment"].includes(context.eventName) ||
issueEvent?.issue.pull_request
) {
const prData = await fetchPR()
// Local PR
if (prData.headRepository.nameWithOwner === prData.baseRepository.nameWithOwner) {
await checkoutLocalBranch(prData)
const head = (await $`git rev-parse HEAD`).stdout.toString().trim()
const dataPrompt = buildPromptDataForPR(prData)
const response = await chat(`${userPrompt}\n\n${dataPrompt}`, promptFiles)
const { dirty, uncommittedChanges } = await branchIsDirty(head)
if (dirty) {
const summary = await summarize(response)
await pushToLocalBranch(summary, uncommittedChanges)
}
const hasShared = prData.comments.nodes.some((c) => c.body.includes(`${shareBaseUrl}/s/${shareId}`))
await createComment(`${response}${footer({ image: !hasShared })}`)
await removeReaction(commentType)
}
// Fork PR
else {
await checkoutForkBranch(prData)
const head = (await $`git rev-parse HEAD`).stdout.toString().trim()
const dataPrompt = buildPromptDataForPR(prData)
const response = await chat(`${userPrompt}\n\n${dataPrompt}`, promptFiles)
const { dirty, uncommittedChanges } = await branchIsDirty(head)
if (dirty) {
const summary = await summarize(response)
await pushToForkBranch(summary, prData, uncommittedChanges)
}
const hasShared = prData.comments.nodes.some((c) => c.body.includes(`${shareBaseUrl}/s/${shareId}`))
await createComment(`${response}${footer({ image: !hasShared })}`)
await removeReaction(commentType)
}
}
// Issue
else {
const branch = await checkoutNewBranch("issue")
const head = (await $`git rev-parse HEAD`).stdout.toString().trim()
const issueData = await fetchIssue()
const dataPrompt = buildPromptDataForIssue(issueData)
const response = await chat(`${userPrompt}\n\n${dataPrompt}`, promptFiles)
const { dirty, uncommittedChanges } = await branchIsDirty(head)
if (dirty) {
const summary = await summarize(response)
await pushToNewBranch(summary, branch, uncommittedChanges, false)
const pr = await createPR(
repoData.data.default_branch,
branch,
summary,
`${response}\n\nCloses #${issueId}${footer({ image: true })}`,
)
await createComment(`Created PR #${pr}${footer({ image: true })}`)
await removeReaction(commentType)
} else {
await createComment(`${response}${footer({ image: true })}`)
await removeReaction(commentType)
}
}
} catch (e: any) {
exitCode = 1
console.error(e instanceof Error ? e.message : String(e))
let msg = e
if (e instanceof $.ShellError) {
msg = e.stderr.toString()
} else if (e instanceof Error) {
msg = e.message
}
if (isUserEvent) {
await createComment(`${msg}${footer()}`)
await removeReaction(commentType)
}
core.setFailed(msg)
// Also output the clean error message for the action to capture
//core.setOutput("prepare_error", e.message);
} finally {
if (!useGithubToken) {
await restoreGitConfig()
await revokeAppToken()
}
}
process.exit(exitCode)
function normalizeModel() {
const value = process.env["MODEL"]
if (!value) throw new Error(`Environment variable "MODEL" is not set`)
const { providerID, modelID } = Provider.parseModel(value)
if (!providerID.length || !modelID.length)
throw new Error(`Invalid model ${value}. Model must be in the format "provider/model".`)
return { providerID, modelID }
}
function normalizeRunId() {
const value = process.env["GITHUB_RUN_ID"]
if (!value) throw new Error(`Environment variable "GITHUB_RUN_ID" is not set`)
return value
}
function normalizeShare() {
const value = process.env["SHARE"]
if (!value) return undefined
if (value === "true") return true
if (value === "false") return false
throw new Error(`Invalid share value: ${value}. Share must be a boolean.`)
}
function normalizeUseGithubToken() {
const value = process.env["USE_GITHUB_TOKEN"]
if (!value) return false
if (value === "true") return true
if (value === "false") return false
throw new Error(`Invalid use_github_token value: ${value}. Must be a boolean.`)
}
function normalizeOidcBaseUrl(): string {
const value = process.env["OIDC_BASE_URL"]
if (!value) return "https://api.opencode.ai"
return value.replace(/\/+$/, "")
}
function isIssueCommentEvent(
event:
| IssueCommentEvent
| IssuesEvent
| PullRequestReviewCommentEvent
| WorkflowDispatchEvent
| WorkflowRunEvent
| PullRequestEvent,
): event is IssueCommentEvent {
return "issue" in event && "comment" in event
}
function getReviewCommentContext() {
if (context.eventName !== "pull_request_review_comment") {
return null
}
const reviewPayload = payload as PullRequestReviewCommentEvent
return {
file: reviewPayload.comment.path,
diffHunk: reviewPayload.comment.diff_hunk,
line: reviewPayload.comment.line,
originalLine: reviewPayload.comment.original_line,
position: reviewPayload.comment.position,
commitId: reviewPayload.comment.commit_id,
originalCommitId: reviewPayload.comment.original_commit_id,
}
}
async function getUserPrompt() {
const customPrompt = process.env["PROMPT"]
// For repo events and issues events, PROMPT is required since there's no comment to extract from
if (isRepoEvent || isIssuesEvent) {
if (!customPrompt) {
const eventType = isRepoEvent ? "scheduled and workflow_dispatch" : "issues"
throw new Error(`PROMPT input is required for ${eventType} events`)
}
return { userPrompt: customPrompt, promptFiles: [] }
}
if (customPrompt) {
return { userPrompt: customPrompt, promptFiles: [] }
}
const reviewContext = getReviewCommentContext()
const mentions = (process.env["MENTIONS"] || "/opencode,/oc")
.split(",")
.map((m) => m.trim().toLowerCase())
.filter(Boolean)
let prompt = (() => {
if (!isCommentEvent) {
return "Review this pull request"
}
const body = (payload as IssueCommentEvent | PullRequestReviewCommentEvent).comment.body.trim()
const bodyLower = body.toLowerCase()
if (mentions.some((m) => bodyLower === m)) {
if (reviewContext) {
return `Review this code change and suggest improvements for the commented lines:\n\nFile: ${reviewContext.file}\nLines: ${reviewContext.line}\n\n${reviewContext.diffHunk}`
}
return "Summarize this thread"
}
if (mentions.some((m) => bodyLower.includes(m))) {
if (reviewContext) {
return `${body}\n\nContext: You are reviewing a comment on file "${reviewContext.file}" at line ${reviewContext.line}.\n\nDiff context:\n${reviewContext.diffHunk}`
}
return body
}
throw new Error(`Comments must mention ${mentions.map((m) => "`" + m + "`").join(" or ")}`)
})()
// Handle images
const imgData: {
filename: string
mime: string
content: string
start: number
end: number
replacement: string
}[] = []
// Search for files
// ie. <img alt="Image" src="https://github.com/user-attachments/assets/xxxx" />
// ie. [api.json](https://github.com/user-attachments/files/21433810/api.json)
// ie. 
const mdMatches = prompt.matchAll(/!?\[.*?\]\((https:\/\/github\.com\/user-attachments\/[^)]+)\)/gi)
const tagMatches = prompt.matchAll(/<img .*?src="(https:\/\/github\.com\/user-attachments\/[^"]+)" \/>/gi)
const matches = [...mdMatches, ...tagMatches].sort((a, b) => a.index - b.index)
console.log("Images", JSON.stringify(matches, null, 2))
let offset = 0
for (const m of matches) {
const tag = m[0]
const url = m[1]
const start = m.index
const filename = path.basename(url)
// Download image
const res = await fetch(url, {
headers: {
Authorization: `Bearer ${appToken}`,
Accept: "application/vnd.github.v3+json",
},
})
if (!res.ok) {
console.error(`Failed to download image: ${url}`)
continue
}
// Replace img tag with file path, ie. @image.png
const replacement = `@${filename}`
prompt = prompt.slice(0, start + offset) + replacement + prompt.slice(start + offset + tag.length)
offset += replacement.length - tag.length
const contentType = res.headers.get("content-type")
imgData.push({
filename,
mime: contentType?.startsWith("image/") ? contentType : "text/plain",
content: Buffer.from(await res.arrayBuffer()).toString("base64"),
start,
end: start + replacement.length,
replacement,
})
}
return { userPrompt: prompt, promptFiles: imgData }
}
function subscribeSessionEvents() {
const TOOL: Record<string, [string, string]> = {
todowrite: ["Todo", UI.Style.TEXT_WARNING_BOLD],
todoread: ["Todo", UI.Style.TEXT_WARNING_BOLD],
bash: ["Bash", UI.Style.TEXT_DANGER_BOLD],
edit: ["Edit", UI.Style.TEXT_SUCCESS_BOLD],
glob: ["Glob", UI.Style.TEXT_INFO_BOLD],
grep: ["Grep", UI.Style.TEXT_INFO_BOLD],
list: ["List", UI.Style.TEXT_INFO_BOLD],
read: ["Read", UI.Style.TEXT_HIGHLIGHT_BOLD],
write: ["Write", UI.Style.TEXT_SUCCESS_BOLD],
websearch: ["Search", UI.Style.TEXT_DIM_BOLD],
}
function printEvent(color: string, type: string, title: string) {
UI.println(
color + `|`,
UI.Style.TEXT_NORMAL + UI.Style.TEXT_DIM + ` ${type.padEnd(7, " ")}`,
"",
UI.Style.TEXT_NORMAL + title,
)
}
let text = ""
Bus.subscribe(MessageV2.Event.PartUpdated, async (evt) => {
if (evt.properties.part.sessionID !== session.id) return
//if (evt.properties.part.messageID === messageID) return
const part = evt.properties.part
if (part.type === "tool" && part.state.status === "completed") {
const [tool, color] = TOOL[part.tool] ?? [part.tool, UI.Style.TEXT_INFO_BOLD]
const title =
part.state.title || Object.keys(part.state.input).length > 0
? JSON.stringify(part.state.input)
: "Unknown"
console.log()
printEvent(color, tool, title)
}
if (part.type === "text") {
text = part.text
if (part.time?.end) {
UI.empty()
UI.println(UI.markdown(text))
UI.empty()
text = ""
return
}
}
})
}
async function summarize(response: string) {
try {
return await chat(`Summarize the following in less than 40 characters:\n\n${response}`)
} catch (e) {
const title = issueEvent
? issueEvent.issue.title
: (payload as PullRequestReviewCommentEvent).pull_request.title
return `Fix issue: ${title}`
}
}
async function chat(message: string, files: PromptFiles = []) {
console.log("Sending message to opencode...")
const result = await SessionPrompt.prompt({
sessionID: session.id,
messageID: Identifier.ascending("message"),
model: {
providerID,
modelID,
},
// agent is omitted - server will use default_agent from config or fall back to "build"
parts: [
{
id: Identifier.ascending("part"),
type: "text",
text: message,
},
...files.flatMap((f) => [
{
id: Identifier.ascending("part"),
type: "file" as const,
mime: f.mime,
url: `data:${f.mime};base64,${f.content}`,
filename: f.filename,
source: {
type: "file" as const,
text: {
value: f.replacement,
start: f.start,
end: f.end,
},
path: f.filename,
},
},
]),
],
})
// result should always be assistant just satisfying type checker
if (result.info.role === "assistant" && result.info.error) {
const err = result.info.error
console.error("Agent error:", err)
if (err.name === "ContextOverflowError") {
throw new Error(formatPromptTooLargeError(files))
}
const errorMsg = err.data?.message || ""
throw new Error(`${err.name}: ${errorMsg}`)
}
const text = extractResponseText(result.parts)
if (text) return text
// No text part (tool-only or reasoning-only) - ask agent to summarize
console.log("Requesting summary from agent...")
const summary = await SessionPrompt.prompt({
sessionID: session.id,
messageID: Identifier.ascending("message"),
model: {
providerID,
modelID,
},
tools: { "*": false }, // Disable all tools to force text response
parts: [
{
id: Identifier.ascending("part"),
type: "text",
text: "Summarize the actions (tool calls & reasoning) you did for the user in 1-2 sentences.",
},
],
})
if (summary.info.role === "assistant" && summary.info.error) {
const err = summary.info.error
console.error("Summary agent error:", err)
if (err.name === "ContextOverflowError") {
throw new Error(formatPromptTooLargeError(files))
}
const errorMsg = err.data?.message || ""
throw new Error(`${err.name}: ${errorMsg}`)
}
const summaryText = extractResponseText(summary.parts)
if (!summaryText) {
throw new Error("Failed to get summary from agent")
}
return summaryText
}
async function getOidcToken() {
try {
return await core.getIDToken("opencode-github-action")
} catch (error) {
console.error("Failed to get OIDC token:", error instanceof Error ? error.message : error)
throw new Error(
"Could not fetch an OIDC token. Make sure to add `id-token: write` to your workflow permissions.",
)
}
}
async function exchangeForAppToken(token: string) {
const response = token.startsWith("github_pat_")
? await fetch(`${oidcBaseUrl}/exchange_github_app_token_with_pat`, {
method: "POST",
headers: {
Authorization: `Bearer ${token}`,
},
body: JSON.stringify({ owner, repo }),
})
: await fetch(`${oidcBaseUrl}/exchange_github_app_token`, {
method: "POST",