Plugin for OpenCode to commit modified files after executing edit tools (see https://opencode.ai/docs/plugins)

auto-commit-hook.ts

import type {Hooks, PluginInput} from "@opencode-ai/plugin"

export default async function (input: PluginInput): Promise<Hooks> {
    const {$, client} = input
    return {
        "tool.execute.after": async (info, output) => {
            try {
                const editTools = ["write", "multiedit", "apply_patch", "edit", "search_replace", "create", "rename_element"]
                if (!editTools.includes(info.tool)) return

                const modifiedFiles = await findModifiedFile(info, client);
                if (modifiedFiles.length === 0) return

                await $`git add ${modifiedFiles} --ignore-errors`.quiet().nothrow()
                await $`git commit -m "OpenCode WIP: ${info.tool} ${output.title}" --no-verify --allow-empty -- ${modifiedFiles}`.quiet().nothrow()

            } catch (err) {
                await client.app.log({
                    body: {
                        service: "auto-commit-hook",
                        level: "warn",
                        message: `Git commit failed on ${info.tool}`,
                        extra: {output: err},
                    },
                })
            }
        },
    }
}

async function findModifiedFile(info: { sessionID: string; args: any }, client) {
    const args = info.args || {}
    const files = new Set<string>()

    if (args.path) files.add(args.path)
    if (args.file) files.add(args.file)
    if (args.filePath) files.add(args.filePath)
    if (Array.isArray(args.files)) args.files.forEach(f => files.add(f))

    // Fallback to session summary if no files found in args
    if (files.size === 0) {
        const result = await client.session.get({path: {sessionID: info.sessionID}})
        result.data?.summary?.diffs?.forEach(d => files.add(d.file))
    }

    return [...files].filter(Boolean);
}