323 lines
11 KiB
TypeScript
323 lines
11 KiB
TypeScript
import fs from "fs"
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import os from "os"
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import path from "path"
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import { MatrixBotClient } from "./matrix-client.js"
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import { SessionManager } from "./session-manager.js"
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import { loadConfig } from "./config-loader.js"
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import { log } from "./logger.js"
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// =============================================================================
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// Plugin data directory — uses the same default as matrix-client
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// =============================================================================
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function ensureDataDir(dir: string): void {
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if (!fs.existsSync(dir)) {
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fs.mkdirSync(dir, { recursive: true })
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}
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}
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// =============================================================================
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// Global mutex — prevents double startup (server + client both load plugins)
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// =============================================================================
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let LOCK_FILE = ""
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function tryAcquireLock(): boolean {
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try {
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// Check if an existing lock is stale (process no longer running)
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if (fs.existsSync(LOCK_FILE)) {
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const existingPid = parseInt(fs.readFileSync(LOCK_FILE, "utf-8").trim(), 10)
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if (existingPid && existingPid !== process.pid) {
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try {
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process.kill(existingPid, 0) // throws if process doesn't exist
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} catch {
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// Process dead, remove stale lock
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fs.unlinkSync(LOCK_FILE)
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}
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} else if (existingPid === process.pid) {
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// Same process re-entering (shouldn't happen, but be safe)
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return false
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} else {
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return false // Valid lock held by another process
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}
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}
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fs.writeFileSync(LOCK_FILE, String(process.pid), { mode: 0o644 })
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return true
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} catch {
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return false
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}
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}
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function releaseLock(): void {
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try {
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fs.unlinkSync(LOCK_FILE)
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} catch {
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// ignore
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}
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}
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// =============================================================================
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// Plugin Setup
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// =============================================================================
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async function runPlugin(ctx: any, options: any, dataDir: string) {
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ensureDataDir(dataDir)
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LOCK_FILE = `${dataDir}/lock`
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const SETUP_STARTED_LOG = `${dataDir}/setup-started.log`
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const SETUP_ERROR_LOG = `${dataDir}/setup-error.log`
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log("Plugin module loaded")
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// Acquire global lock — only one instance (server or client) starts the bot
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const locked = tryAcquireLock()
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if (!locked) {
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log("Another instance already running (lock held), skipping bot startup")
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return () => {}
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}
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const eventController = new AbortController()
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let cleanup: (() => void) | undefined
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try {
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const directory = ctx?.location?.directory || process.cwd()
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fs.appendFileSync(SETUP_STARTED_LOG, `[${new Date().toISOString()}] setup() called, dir=${directory}\n`)
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log(`Plugin setup started, directory=${directory}`)
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if (!options.homeserver) {
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log("Plugin disabled (no homeserver configured)")
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return () => {}
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}
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log(`Configuration loaded`)
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const matrix = new MatrixBotClient(options)
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const sessionManager = new SessionManager(options.rateLimitSeconds || 5)
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// Track Matrix context per OpenCode session
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const sessionContextMap = new Map<string, { roomId: string; threadRootId: string; context: any }>()
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// V2 Event subscription for response streaming
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void (async () => {
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try {
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for await (const event of ctx.event.subscribe({ signal: eventController.signal })) {
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const eventType = typeof event === "object" && event !== null && "type" in event ? (event as { type: string }).type : ""
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if (eventType === "session.updated") {
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const sessionId = (event as { sessionID?: string }).sessionID
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if (!sessionId) continue
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const update = (event as { update?: { type: string; content?: string; toolName?: string } }).update
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if (!update) continue
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log(`V2 event: session=${sessionId}, update.type=${update.type}`)
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}
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}
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} catch (err) {
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if (String(err).includes("AbortError") || (err as { name?: string }).name === "AbortError") {
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// expected during cleanup
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} else {
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log(`Event subscription error: ${String(err)}`)
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}
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}
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})()
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// Message handler
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matrix.on(async (data: any) => {
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const { context, query, sender, roomId, eventId, timestamp } = data
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// Check rate limit
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if (sessionManager.isRateLimited(sender)) {
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await matrix.sendNotice(context, "Rate limited. Please wait a moment.")
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return
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}
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// Check for active query
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if (sessionManager.hasActiveQuery(roomId, context.replyThreadRootId || context.eventId)) {
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await matrix.sendNotice(context, "A request is already running in this thread. Please wait.")
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return
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}
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const abortFn = () => { /* placeholder for cancel */ }
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const releaseQuery = sessionManager.markQueryActive(roomId, context.replyThreadRootId || context.eventId, abortFn)
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const threadRootId = context.replyThreadRootId || context.eventId
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const session = sessionManager.getOrCreateSession(roomId, threadRootId, eventId)
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session.isActive = true
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session.messageCount++
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session.inputChars += query.length
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session.lastEventIds.set(context.replyThreadRootId || context.eventId, eventId)
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session.lastActivity = Date.now()
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let opencodeSessionId = session.opencodeSessionId
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// If no session ID yet, create one
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if (!opencodeSessionId) {
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log(`Creating new OpenCode session for ${roomId}:${threadRootId}`)
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try {
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const encodedId = `${roomId}:${threadRootId}`
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const createResult = await ctx.session.create({ id: encodedId, title: `Matrix: ${roomId.slice(0, 30)}...` })
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opencodeSessionId = createResult?.id || createResult?.data?.id || encodedId
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log(`Created OpenCode session ${opencodeSessionId} (ID: ${encodedId})`)
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session.opencodeSessionId = opencodeSessionId
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sessionManager.saveSession(roomId, threadRootId, opencodeSessionId)
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sessionContextMap.set(opencodeSessionId, { roomId, threadRootId, context })
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} catch (createErr: any) {
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log(`Failed to create session: ${String(createErr)}`)
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session.isActive = false
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session.lastActivity = Date.now()
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releaseQuery()
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await matrix.sendNotice(context, "Failed to create session. Check logs.")
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return
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}
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}
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try {
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const result = await ctx.session.prompt({
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sessionID: opencodeSessionId,
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text: query,
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})
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const responseText = result ? String(result) : "No response"
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session.outputChars += responseText.length
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await matrix.sendReply(context, responseText)
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} catch (err: any) {
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log(`Error processing message: ${String(err)}`)
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const errMsg = err?.response?.error?.message || String(err)
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await matrix.sendNotice(context, `Error: ${errMsg.slice(0, 200)}`)
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} finally {
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session.isActive = false
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session.lastActivity = Date.now()
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sessionContextMap.delete(opencodeSessionId)
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releaseQuery()
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}
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})
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// Bridge commands
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async function handleBridgeCommand(
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context: { roomId: string; replyThreadRootId?: string; threadRootId?: string; eventId: string },
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cmdName: string,
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sendFn: (text: string) => Promise<void>,
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): Promise<void> {
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const threadRootId = context.threadRootId || context.replyThreadRootId || context.eventId
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const key = sessionManager.getSessionKey(context.roomId, threadRootId)
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const sess = sessionManager.sessions.get(key)
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switch (cmdName) {
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case "status": {
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if (!sess) {
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await sendFn("No active session.")
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return
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}
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const age = Math.round((Date.now() - sess.lastActivity) / 60000)
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const msg = `Session status:\n- Messages: ${sess.messageCount}\n- Age: ~${age} min ago\n- Input: ~${sess.inputChars} chars\n- Output: ~${sess.outputChars} chars`
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await sendFn(msg)
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break
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}
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case "clear":
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case "reset": {
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sessionManager.removeSession(context.roomId, threadRootId)
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await sendFn("Session cleared. Next message will start a fresh session.")
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break
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}
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case "help":
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case "h": {
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const trigger = options.triggerPatterns?.[0] || "!oc "
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const botName = options.botName || "opencode"
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const msg = [
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`${botName} - OpenCode Matrix Plugin`,
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"",
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"Bridge commands:",
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`- /h or /help - Show this help`,
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`- /status - Show current chat session info`,
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`- /clear or /reset - Delete current session history`,
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"",
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`Usage: ${trigger} <your question>`,
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`Or @${botName} <your question>`,
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`Or reply in a thread`,
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].join("\n")
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await sendFn(msg)
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break
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}
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default:
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await sendFn(`Unknown command: ${cmdName}. Try /help`)
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}
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}
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// Override the matrix.on handler to also process commands
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const originalListener = (matrix as any)["listeners"][0]
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;(matrix as any)["listeners"] = []
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matrix.on(async (data: any) => {
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const { context, query, sender, eventId } = data
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// Handle bridge commands
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if (query.startsWith("/")) {
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const cmdName = query.slice(1).split(" ")[0].toLowerCase()
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const bridgeCommands = ["status", "clear", "reset", "help", "h"]
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if (bridgeCommands.includes(cmdName)) {
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const sendFn = (text: string) => matrix.sendNotice(context, text)
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await handleBridgeCommand(context, cmdName, sendFn)
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return
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}
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}
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// Forward to original handler
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if (originalListener) {
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await originalListener(data)
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}
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})
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// V2 Storage
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if (ctx?.storage) {
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await ctx.storage.set("matrix/plugin_version", "1.0.0")
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await ctx.storage.set("matrix/started_at", new Date().toISOString())
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}
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// Start Matrix client
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await matrix.start()
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log(`Plugin setup completed successfully`)
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cleanup = () => {
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log("Plugin cleaning up...")
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eventController.abort()
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matrix.stop()
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// Don't release lock — keep it on disk so client always sees it
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}
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return cleanup
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} catch (err) {
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fs.appendFileSync(SETUP_ERROR_LOG, `[${new Date().toISOString()}] ${String(err)}\n`)
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log(`Setup error: ${String(err)}`)
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releaseLock()
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return () => {}
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}
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}
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// =============================================================================
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// V2 Setup Function
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// =============================================================================
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async function v2Setup(ctx: any) {
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const rawStorage = (ctx.options as any)?.storagePath
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const dataDir = rawStorage
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? path.join(rawStorage, "plugin-data")
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: path.join(os.homedir(), ".local", "share", "opencode-matrix-bot", "plugin-data")
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ensureDataDir(dataDir)
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try {
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const { options } = await loadConfig(ctx.options)
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return await runPlugin(ctx, options, dataDir)
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} catch (err) {
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fs.appendFileSync(`${dataDir}/setup-error.log`, `[${new Date().toISOString()}] ${String(err)}\n`)
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log(`V2 setup error: ${String(err)}`)
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return () => {}
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}
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}
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// =============================================================================
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// Export
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// =============================================================================
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export default {
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id: "matrix-plugin",
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async setup(ctx: any) {
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log("Using V2 path (full context)")
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return await v2Setup(ctx)
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},
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}
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