337 lines
15 KiB
TypeScript
337 lines
15 KiB
TypeScript
import { Agent, Model, Plugin, Provider } from "@opencode/plugin";
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import type { RpcRegistration } from "@opencode/plugin/promise/rpc";
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import type { ModelInfo } from "@opencode/client";
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import { z } from "zod";
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import { gptAgents, settings, workerNames } from "./config.js";
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import { discover } from "./provider.js";
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import { descriptions, routingGuide } from "./routing.js";
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import { QuotaTracker } from "./quota.js";
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import { QuotaRpc } from "./quota-rpc.js";
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import { playwrightMcpCommand } from "./playwright.js";
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// Permission actions use wildcards, not filesystem globs.
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function matches(value: string, pattern: string) {
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const escaped = pattern
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.replace(/[.+^${}()|[\]\\]/g, "\\$&")
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.replace(/\*/g, ".*")
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.replace(/\?/g, ".");
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return new RegExp(`^${escaped}$`, "s").test(value);
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}
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const reading = [
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"read",
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"glob",
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"grep",
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"list",
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"todoread",
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"todowrite",
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"webfetch",
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"websearch",
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"question",
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"external_directory",
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"doom_loop",
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];
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const delegation = z.object({ agent: z.string() });
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const todos = z.array(
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z.object({
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id: z.string(),
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content: z.string(),
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status: z.enum(["pending", "in_progress", "completed", "cancelled"]),
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priority: z.enum(["high", "medium", "low"]),
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}),
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);
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export default Plugin.define({
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id: "stanp-opencode",
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async setup(context) {
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const selected = settings.parse({ mode: "gpt", ...context.options });
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let models = new Map<string, { model: ModelInfo; serviceTier: string | undefined }>();
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let inherited: Agent.Info["permissions"] = Agent.Info.default(
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Agent.ID.make("build"),
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).permissions;
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let permissionKey = JSON.stringify(inherited);
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let hasCodegraph = false;
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let codegraphTools: string[] = [];
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let agentTransformReady = false;
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const controller = new AbortController();
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let quotaRegistration: RpcRegistration<typeof QuotaRpc> | undefined;
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const quota = new QuotaTracker(context, async () => {
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await quotaRegistration?.events.emit("updated", {});
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});
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quotaRegistration = await context.rpc.register(QuotaRpc, {
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status: async () => quota.status() ?? null,
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});
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await quota.init();
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// Subscribe before the first read: configuration can publish its models while
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// asynchronous setup is running.
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const updates = (async () => {
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for await (const event of context.event.subscribe({ signal: controller.signal })) {
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if (event.location) {
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const workspaceID =
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"workspaceID" in event.location ? event.location.workspaceID : undefined;
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if (
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event.location.directory !== context.location.directory ||
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workspaceID !== context.location.workspaceID
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)
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continue;
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}
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if (event.type === "model.updated") {
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models = await discover(context, selected.provider);
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await context.agent.reload();
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} else if (event.type === "agent.updated") {
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// The configured build transform may run after ours. Read the final
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// registry, then replay only when its effective permissions change.
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const { data } = await context.agent.list();
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const permissions =
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data.find((agent) => agent.id === "build")?.permissions ??
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Agent.Info.default(Agent.ID.make("build")).permissions;
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const key = JSON.stringify(permissions);
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if (key === permissionKey) continue;
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inherited = permissions;
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permissionKey = key;
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await context.agent.reload();
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} else if (
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event.type === "session.execution.succeeded" ||
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event.type === "session.execution.failed" ||
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event.type === "session.execution.interrupted" ||
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event.type === "session.idle"
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) {
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await quota.complete(event.data.sessionID);
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} else if (event.type === "credential.updated") {
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await quota.authChanged();
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} else if (
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event.type === "credential.switched" &&
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String(event.data.integrationID) === "openai"
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) {
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await quota.authChanged(true);
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}
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}
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})().catch((error) => {
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if (!controller.signal.aborted)
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console.error("stanp-opencode model update failed", error);
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});
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models = await discover(context, selected.provider);
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const { data: initialAgents } = await context.agent.list();
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inherited = initialAgents.find((agent) => agent.id === "build")?.permissions ?? inherited;
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permissionKey = JSON.stringify(inherited);
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const assignments = selected.mode === "gpt" ? gptAgents : selected.agents;
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let workers: (typeof workerNames)[number][] = [];
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const active = new Set<string>();
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const playwrightCommand = selected.playwright
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? await playwrightMcpCommand(context.location.directory)
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: undefined;
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await context.mcp.transform((editor) => {
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if (playwrightCommand && !editor.get("playwright"))
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editor.set("playwright", {
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type: "local",
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command: playwrightCommand,
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timeout: { startup: 300_000 },
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});
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hasCodegraph = editor.get("codegraph") !== undefined;
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if (hasCodegraph)
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editor.update("codegraph", (server) => {
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server.codemode = false;
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});
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});
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await context.tool.transform((editor) => {
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const next = editor
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.list()
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.map((tool) => tool.id)
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.filter((id) => id.startsWith("codegraph_"))
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.sort();
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if (JSON.stringify(next) === JSON.stringify(codegraphTools)) return;
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codegraphTools = next;
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if (agentTransformReady)
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queueMicrotask(() => {
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void context.agent
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.reload()
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.catch((error) =>
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console.error("stanp-opencode agent reload failed", error),
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);
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});
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});
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await context.agent.transform((editor) => {
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const deep = selected.mode === "custom" || models.has("gpt-6-astra");
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const candidates = workerNames.filter((name) => deep || !name.startsWith("deep-"));
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const coordinate =
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selected.mode === "gpt" && !deep
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? { model: "gpt-5.6-sol", effort: "medium" }
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: assignments.coordinate;
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workers = [coordinate, ...candidates.map((name) => assignments[name])].every(
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({ model }) => models.has(model),
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)
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? candidates
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: [];
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active.clear();
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for (const name of workers) active.add(name);
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if (workers.length === 0) return;
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for (const name of workers) {
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const assignment = assignments[name];
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const available = models.get(assignment.model)!;
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editor.update(name, (agent) => {
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const hasVariant = available.model.variants.some(
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({ id }) => id === assignment.effort,
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);
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agent.name = Agent.Name.make(name);
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agent.mode = "subagent";
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agent.hidden = false;
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agent.description = descriptions[name];
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agent.model = {
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providerID: Provider.ID.make(available.model.providerID),
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id: Model.ID.make(available.model.id),
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};
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if (hasVariant) agent.model.variant = Model.VariantID.make(assignment.effort);
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agent.request = {
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settings: hasVariant ? {} : { reasoningEffort: assignment.effort },
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headers: {},
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body: {},
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};
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if (selected.lunaPriority && available.serviceTier)
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agent.request.settings.serviceTier = available.serviceTier;
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agent.permissions = [
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...structuredClone(inherited),
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{ action: "subagent", resource: "*", effect: "deny" },
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];
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});
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}
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editor.update("coordinate", (agent) => {
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const available = models.get(coordinate.model)!;
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const hasVariant = available.model.variants.some(
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({ id }) => id === coordinate.effort,
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);
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agent.name = Agent.Name.make("coordinate");
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agent.mode = "primary";
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agent.hidden = false;
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agent.description =
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"Read, plan, and coordinate specialist workers; never implement directly.";
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agent.model = {
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providerID: Provider.ID.make(available.model.providerID),
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id: Model.ID.make(available.model.id),
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};
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if (hasVariant) agent.model.variant = Model.VariantID.make(coordinate.effort);
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agent.request = {
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settings: hasVariant ? {} : { reasoningEffort: coordinate.effort },
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headers: {},
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body: {},
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};
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agent.system = routingGuide(deep);
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agent.permissions = [
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{ action: "*", resource: "*", effect: "deny" },
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...reading.flatMap((action) =>
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inherited
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.filter((rule) => matches(action, rule.action))
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.map((rule) => ({ ...rule, action })),
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),
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...(hasCodegraph
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? codegraphTools.flatMap((action) =>
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inherited
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.filter((rule) => matches(action, rule.action))
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.map((rule) => ({ ...rule, action })),
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)
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: []),
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...workers.map((resource) => ({
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action: "subagent",
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resource,
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effect: "allow" as const,
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})),
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];
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});
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});
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agentTransformReady = true;
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async function assertTodo(agentID: Agent.ID, action: string) {
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const { data: agent } = await context.agent.get({ agentID });
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const effect =
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agent.permissions.findLast(
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(rule) => matches(action, rule.action) && matches("*", rule.resource),
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)?.effect ?? "ask";
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if (effect !== "allow")
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throw new Error(
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`${action} requires an allow permission: OpenCode's public plugin API cannot request custom-tool permission approval (${effect}).`,
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);
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}
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await context.tool.transform((editor) => {
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if (!editor.get("todowrite"))
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editor.add({
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name: "todowrite",
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description:
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"Replace this session's todo list to track the work and its progress.",
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input: z.object({ todos }),
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options: { codemode: false },
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async execute(input, tool) {
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await assertTodo(tool.agent, "todowrite");
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await context.storage.set(`todos:${tool.sessionID}`, input.todos);
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return { content: JSON.stringify(input.todos) };
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},
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});
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if (!editor.get("todoread"))
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editor.add({
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name: "todoread",
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description: "Read this session's todo list.",
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input: z.object({}),
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options: { codemode: false },
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async execute(_input, tool) {
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await assertTodo(tool.agent, "todoread");
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const stored = await context.storage.get(`todos:${tool.sessionID}`);
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return {
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content: JSON.stringify(
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stored === undefined ? [] : todos.parse(stored),
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),
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};
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},
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});
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});
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await context.session.hook("context", (event) => {
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if (workerNames.some((name) => name === event.agent)) {
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delete event.tools.subagent;
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return;
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}
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const tool = event.tools.subagent;
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if (event.agent === "coordinate" && workers.length === 0) {
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delete event.tools.subagent;
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return;
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}
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if (event.agent !== "coordinate" || !tool) return;
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tool.description = `Delegate a self-contained assignment to one of these workers:\n${workers.map((name) => `- ${name}: ${descriptions[name]}`).join("\n")}`;
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// The executable definition remains native; constrain only this request's schema.
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const properties = z.record(z.string(), z.unknown()).parse(tool.input.properties ?? {});
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tool.input = {
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...tool.input,
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properties: { ...properties, agent: { type: "string", enum: workers } },
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};
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});
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await context.session.hook("model.request", async (event) => quota.start(event.sessionID));
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await context.tool.hook("execute.before", (event) => {
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if (event.tool !== "subagent") return;
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const { agent } = delegation.parse(event.input);
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if (agent === "coordinate") throw new Error("coordinate cannot run as a subagent");
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if (workerNames.some((name) => name === event.agent))
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throw new Error("Workers cannot delegate tasks");
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if (event.agent === "coordinate" && !active.has(agent))
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throw new Error("coordinate may delegate only to its available workers");
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});
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// Commands can create child sessions without going through the subagent tool.
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await context.session.hook("prompt", async (event) => {
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const child = await context.session.get({ sessionID: event.sessionID });
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if (!child.parentID) return;
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if (child.agent === "coordinate")
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throw new Error("coordinate cannot run as a subagent");
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const parent = await context.session.get({ sessionID: child.parentID });
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if (workerNames.some((name) => name === parent.agent))
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throw new Error("Workers cannot delegate tasks");
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if (
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parent.agent === "coordinate" &&
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(child.agent === undefined || !active.has(child.agent))
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)
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throw new Error("coordinate may delegate only to its available workers");
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});
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return async () => {
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controller.abort();
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await updates;
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await quota.dispose();
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await quotaRegistration?.dispose();
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};
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},
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});
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