opencode/script/changelog.ts at dev · coolhero/opencode · GitHub

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#!/usr/bin/env bun

import { $ } from "bun"

import { createOpencode } from "@opencode-ai/sdk/v2"

import { parseArgs } from "util"

import { Script } from "@opencode-ai/script"

type Release = {

tag_name: string

draft: boolean

prerelease: boolean

}

export async function getLatestRelease(skip?: string) {

const data = await fetch("https://api.github.com/repos/anomalyco/opencode/releases?per_page=100").then((res) => {

if (!res.ok) throw new Error(res.statusText)

return res.json()

})

const releases = data as Release[]

const target = skip?.replace(/^v/, "")

for (const release of releases) {

if (release.draft) continue

const tag = release.tag_name.replace(/^v/, "")

if (target && tag === target) continue

return tag

}

throw new Error("No releases found")

}

type Commit = {

hash: string

author: string | null

message: string

areas: Set<string>

}

export async function getCommits(from: string, to: string): Promise<Commit[]> {

const fromRef = from.startsWith("v") ? from : `v${from}`

const toRef = to === "HEAD" ? to : to.startsWith("v") ? to : `v${to}`

// Get commit data with GitHub usernames from the API

const compare =

await $`gh api "/repos/anomalyco/opencode/compare/${fromRef}...${toRef}" --jq '.commits[] | {sha: .sha, login: .author.login, message: .commit.message}'`.text()

const commitData = new Map<string, { login: string | null; message: string }>()

for (const line of compare.split("\n").filter(Boolean)) {

const data = JSON.parse(line) as { sha: string; login: string | null; message: string }

commitData.set(data.sha, { login: data.login, message: data.message.split("\n")[0] ?? "" })

}

// Get commits that touch the relevant packages

const log =

await $`git log ${fromRef}..${toRef} --oneline --format="%H" -- packages/opencode packages/sdk packages/plugin packages/desktop packages/app sdks/vscode packages/extensions github`.text()

const hashes = log.split("\n").filter(Boolean)

const commits: Commit[] = []

for (const hash of hashes) {

const data = commitData.get(hash)

if (!data) continue

const message = data.message

if (message.match(/^(ignore:|test:|chore:|ci:|release:)/i)) continue

const files = await $`git diff-tree --no-commit-id --name-only -r ${hash}`.text()

const areas = new Set<string>()

for (const file of files.split("\n").filter(Boolean)) {

if (file.startsWith("packages/opencode/src/cli/cmd/")) areas.add("tui")

else if (file.startsWith("packages/opencode/")) areas.add("core")

else if (file.startsWith("packages/desktop/src-tauri/")) areas.add("tauri")

else if (file.startsWith("packages/desktop/")) areas.add("app")

else if (file.startsWith("packages/app/")) areas.add("app")

else if (file.startsWith("packages/sdk/")) areas.add("sdk")

else if (file.startsWith("packages/plugin/")) areas.add("plugin")

else if (file.startsWith("packages/extensions/")) areas.add("extensions/zed")

else if (file.startsWith("sdks/vscode/")) areas.add("extensions/vscode")

else if (file.startsWith("github/")) areas.add("github")

}

if (areas.size === 0) continue

commits.push({

hash: hash.slice(0, 7),

author: data.login,

message,

areas,

})

}

return filterRevertedCommits(commits)

}

function filterRevertedCommits(commits: Commit[]): Commit[] {

const revertPattern = /^Revert "(.+)"$/

const seen = new Map<string, Commit>()

for (const commit of commits) {

const match = commit.message.match(revertPattern)

if (match) {

// It's a revert - remove the original if we've seen it

const original = match[1]!

if (seen.has(original)) seen.delete(original)

else seen.set(commit.message, commit) // Keep revert if original not in range

} else {

// Regular commit - remove if its revert exists, otherwise add

const revertMsg = `Revert "${commit.message}"`

if (seen.has(revertMsg)) seen.delete(revertMsg)

else seen.set(commit.message, commit)

}

return [...seen.values()]

}

const sections = {

core: "Core",

tui: "TUI",

app: "Desktop",

tauri: "Desktop",

sdk: "SDK",

plugin: "SDK",

"extensions/zed": "Extensions",

"extensions/vscode": "Extensions",

github: "Extensions",

} as const

function getSection(areas: Set<string>): string {

// Priority order for multi-area commits

const priority = ["core", "tui", "app", "tauri", "sdk", "plugin", "extensions/zed", "extensions/vscode", "github"]

for (const area of priority) {

if (areas.has(area)) return sections[area as keyof typeof sections]

}

return "Core"

}

async function summarizeCommit(opencode: Awaited<ReturnType<typeof createOpencode>>, message: string): Promise<string> {

console.log("summarizing commit:", message)

const session = await opencode.client.session.create()

const result = await opencode.client.session

.prompt(

{

sessionID: session.data!.id,

model: { providerID: "opencode", modelID: "claude-sonnet-4-5" },

tools: {

"*": false,

parts: [

{

type: "text",

text: `Summarize this commit message for a changelog entry. Return ONLY a single line summary starting with a capital letter. Be concise but specific. If the commit message is already well-written, just clean it up (capitalize, fix typos, proper grammar). Do not include any prefixes like "fix:" or "feat:".

Commit: ${message}`,

{

signal: AbortSignal.timeout(120_000),

)

.then((x) => x.data?.parts?.find((y) => y.type === "text")?.text ?? message)

return result.trim()

}

export async function generateChangelog(commits: Commit[], opencode: Awaited<ReturnType<typeof createOpencode>>) {

// Summarize commits in parallel with max 10 concurrent requests

const BATCH_SIZE = 10

const summaries: string[] = []

for (let i = 0; i < commits.length; i += BATCH_SIZE) {

const batch = commits.slice(i, i + BATCH_SIZE)

const results = await Promise.all(batch.map((c) => summarizeCommit(opencode, c.message)))

summaries.push(...results)

}

const grouped = new Map<string, string[]>()

for (let i = 0; i < commits.length; i++) {

const commit = commits[i]!

const section = getSection(commit.areas)

const attribution = commit.author && !Script.team.includes(commit.author) ? ` (@${commit.author})` : ""

const entry = `- ${summaries[i]}${attribution}`

if (!grouped.has(section)) grouped.set(section, [])

grouped.get(section)!.push(entry)

}

const sectionOrder = ["Core", "TUI", "Desktop", "SDK", "Extensions"]

const lines: string[] = []

for (const section of sectionOrder) {

const entries = grouped.get(section)

if (!entries || entries.length === 0) continue

lines.push(`## ${section}`)

lines.push(...entries)

}

return lines

}

export async function getContributors(from: string, to: string) {

const fromRef = from.startsWith("v") ? from : `v${from}`

const toRef = to === "HEAD" ? to : to.startsWith("v") ? to : `v${to}`

const compare =

await $`gh api "/repos/anomalyco/opencode/compare/${fromRef}...${toRef}" --jq '.commits[] | {login: .author.login, message: .commit.message}'`.text()

const contributors = new Map<string, Set<string>>()

for (const line of compare.split("\n").filter(Boolean)) {

const { login, message } = JSON.parse(line) as { login: string | null; message: string }

const title = message.split("\n")[0] ?? ""

if (title.match(/^(ignore:|test:|chore:|ci:|release:)/i)) continue

if (login && !Script.team.includes(login)) {

if (!contributors.has(login)) contributors.set(login, new Set())

contributors.get(login)!.add(title)

}

return contributors

}

export async function buildNotes(from: string, to: string) {

const commits = await getCommits(from, to)

if (commits.length === 0) {

return []

}

console.log("generating changelog since " + from)

const opencode = await createOpencode({ port: 0 })

const notes: string[] = []

try {

const lines = await generateChangelog(commits, opencode)

notes.push(...lines)

console.log("---- Generated Changelog ----")

console.log(notes.join("\n"))

console.log("-----------------------------")

} catch (error) {

if (error instanceof Error && error.name === "TimeoutError") {

console.log("Changelog generation timed out, using raw commits")

for (const commit of commits) {

const attribution = commit.author && !team.includes(commit.author) ? ` (@${commit.author})` : ""

notes.push(`- ${commit.message}${attribution}`)

}

} else {

throw error

}

} finally {

await opencode.server.close()

}

console.log("changelog generation complete")

const contributors = await getContributors(from, to)

if (contributors.size > 0) {

notes.push("")

notes.push(`**Thank you to ${contributors.size} community contributor${contributors.size > 1 ? "s" : ""}:**`)

for (const [username, userCommits] of contributors) {

notes.push(`- @${username}:`)

for (const c of userCommits) {

notes.push(` - ${c}`)

}

return notes

}

// CLI entrypoint

if (import.meta.main) {

const { values } = parseArgs({

args: Bun.argv.slice(2),

options: {

from: { type: "string", short: "f" },

to: { type: "string", short: "t", default: "HEAD" },

help: { type: "boolean", short: "h", default: false },

})

if (values.help) {

console.log(`

Usage: bun script/changelog.ts [options]

Options:

-f, --from <version> Starting version (default: latest GitHub release)

-t, --to <ref> Ending ref (default: HEAD)

-h, --help Show this help message

Examples:

bun script/changelog.ts # Latest release to HEAD

bun script/changelog.ts --from 1.0.200 # v1.0.200 to HEAD

bun script/changelog.ts -f 1.0.200 -t 1.0.205

process.exit(0)

}

const to = values.to!

const from = values.from ?? (await getLatestRelease())

console.log(`Generating changelog: v${from} -> ${to}\n`)

const notes = await buildNotes(from, to)

console.log("\n=== Final Notes ===")

console.log(notes.join("\n"))

}

opencode/script/changelog.ts at dev · coolhero/opencode · GitHub

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