/**
 * @license
 * Copyright 2025 Google LLC
 * SPDX-License-Identifier: Apache-2.0
 */
import { uiTelemetryService, SessionEndReason, SessionStartSource, flushTelemetry, } from '@google/gemini-cli-core';
import { CommandKind } from './types.js';
import { MessageType } from '../types.js';
import { randomUUID } from 'node:crypto';
export const clearCommand = {
    name: 'clear',
    description: 'Clear the screen and conversation history',
    kind: CommandKind.BUILT_IN,
    autoExecute: true,
    action: async (context, _args) => {
        const geminiClient = context.services.config?.getGeminiClient();
        const config = context.services.config;
        const chatRecordingService = context.services.config
            ?.getGeminiClient()
            ?.getChat()
            .getChatRecordingService();
        // Fire SessionEnd hook before clearing
        await config?.getHookSystem()?.fireSessionEndEvent(SessionEndReason.Clear);
        if (geminiClient) {
            context.ui.setDebugMessage('Clearing terminal and resetting chat.');
            // If resetChat fails, the exception will propagate and halt the command,
            // which is the correct behavior to signal a failure to the user.
            await geminiClient.resetChat();
        }
        else {
            context.ui.setDebugMessage('Clearing terminal.');
        }
        // Start a new conversation recording with a new session ID
        if (config && chatRecordingService) {
            const newSessionId = randomUUID();
            config.setSessionId(newSessionId);
            chatRecordingService.initialize();
        }
        // Fire SessionStart hook after clearing
        const result = await config
            ?.getHookSystem()
            ?.fireSessionStartEvent(SessionStartSource.Clear);
        // Give the event loop a chance to process any pending telemetry operations
        // This ensures logger.emit() calls have fully propagated to the BatchLogRecordProcessor
        await new Promise((resolve) => setImmediate(resolve));
        // Flush telemetry to ensure hooks are written to disk immediately
        // This is critical for tests and environments with I/O latency
        if (config) {
            await flushTelemetry(config);
        }
        uiTelemetryService.setLastPromptTokenCount(0);
        context.ui.clear();
        if (result?.finalOutput?.systemMessage) {
            context.ui.addItem({
                type: MessageType.INFO,
                text: result.finalOutput.systemMessage,
            }, Date.now());
        }
    },
};
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