init

.opencode/plugin/context-injector.ts

@@ -0,0 +1,84 @@
+import type { Plugin } from "@opencode-ai/plugin";
+
+const { buildReminderContext } = require("./lib/context-builder.cjs");
+const { detectProject, getCodingLevelGuidelines } = require("./lib/project-detector.cjs");
+const { loadConfig } = require("./lib/ck-config-utils.cjs");
+
+// Track first message per session to inject context once
+const injectedSessions = new Set<string>();
+
+/**
+ * Context Injector Plugin - Inject session context into first message
+ *
+ * Combines functionality of dev-rules-reminder.cjs and session-init.cjs.
+ * Injects rules, session info, project detection into first user message only.
+ */
+export const ContextInjectorPlugin: Plugin = async ({ directory }) => {
+  // Load config once at plugin initialization
+  let config: any;
+  let detections: any;
+
+  try {
+    config = loadConfig();
+    detections = detectProject();
+  } catch (e) {
+    // Fallback to defaults if config loading fails
+    config = { codingLevel: -1 };
+    detections = {};
+  }
+
+  return {
+    "chat.message": async ({}: any, { message }: any) => {
+      // Get or generate session ID
+      const sessionId = process.env.OPENCODE_SESSION_ID ||
+                        `opencode-${Date.now()}`;
+
+      // Only inject on first message per session
+      if (injectedSessions.has(sessionId)) {
+        return;
+      }
+      injectedSessions.add(sessionId);
+
+      try {
+        // Build context
+        const { content } = buildReminderContext({
+          sessionId,
+          config,
+          staticEnv: {
+            nodeVersion: process.version,
+            osPlatform: process.platform,
+            gitBranch: detections.gitBranch,
+            gitRoot: detections.gitRoot,
+            user: process.env.USER || process.env.USERNAME,
+            locale: process.env.LANG || '',
+            timezone: Intl.DateTimeFormat().resolvedOptions().timeZone
+          },
+          configDirName: '.opencode'
+        });
+
+        // Inject coding level guidelines if configured
+        const codingLevel = config.codingLevel ?? -1;
+        const guidelines = getCodingLevelGuidelines(codingLevel, `${directory}/.opencode`);
+
+        // Prepend context to first user message
+        const contextBlock = [
+          '<system-context>',
+          content,
+          guidelines ? `\n${guidelines}` : '',
+          '</system-context>',
+          ''
+        ].filter(Boolean).join('\n');
+
+        // Modify message content (prepend context)
+        if (message && typeof message.content === 'string') {
+          message.content = contextBlock + message.content;
+        }
+      } catch (e) {
+        // Silently fail - don't break the chat if context injection fails
+        console.error('[ContextInjector] Failed to inject context:', e);
+      }
+    }
+  };
+};
+
+export default ContextInjectorPlugin;