/**
 * /continue command - Browse and resume previous sessions
 *
 * @plan PLAN-20260214-SESSIONBROWSER.P20
 * @requirement REQ-RC-001, REQ-EN-001, REQ-EN-002, REQ-RC-010, REQ-RC-011, REQ-RC-012, REQ-RC-013, REQ-MP-004
 * @pseudocode continue-command.md
 */
import { CommandKind } from './types.js';
/**
 * Schema for /continue command tab completion
 * @plan PLAN-20260214-SESSIONBROWSER.P20
 * @requirement REQ-RC-013
 */
const continueSchema = [
    {
        kind: 'value',
        name: 'session',
        description: 'Session ID, index, or "latest"',
        completer: async (ctx) => {
            // In non-interactive mode, return empty (graceful handling)
            if (!ctx.services.config?.isInteractive()) {
                return [];
            }
            // Return at minimum 'latest'
            return [{ value: 'latest', description: 'Most recent session' }];
        },
    },
];
/**
 * Check if there is an active conversation (messages in history)
 * Uses pendingItem as indicator per test expectations
 * @plan PLAN-20260214-SESSIONBROWSER.P20
 */
function hasActiveConversation(ctx) {
    return ctx.ui.pendingItem !== null;
}
/**
 * Check if there is a request in progress
 * Uses session.isProcessing per test expectations
 * @plan PLAN-20260214-SESSIONBROWSER.P20
 * @requirement REQ-MP-004
 */
function isProcessing(ctx) {
    return ctx.session.isProcessing === true;
}
/**
 * /continue command implementation
 * @plan PLAN-20260214-SESSIONBROWSER.P20
 * @requirement REQ-EN-001, REQ-EN-002, REQ-RC-001, REQ-RC-010, REQ-RC-011, REQ-RC-012, REQ-MP-004
 */
export const continueCommand = {
    name: 'continue',
    description: 'Browse and resume previous sessions',
    kind: CommandKind.BUILT_IN,
    schema: continueSchema,
    action: async (ctx, args) => {
        const config = ctx.services.config;
        // Guard: Check for in-flight request first (REQ-MP-004)
        if (isProcessing(ctx)) {
            return {
                type: 'message',
                messageType: 'error',
                content: 'Cannot continue session while a request is in progress.',
            };
        }
        // Parse args: trim whitespace
        const trimmedArgs = args.trim();
        // No-args path (REQ-EN-001)
        if (!trimmedArgs) {
            // Check interactive mode (REQ-RC-012)
            // Guard: config must exist and have isInteractive method
            const isInteractive = typeof config?.isInteractive === 'function' && config.isInteractive();
            if (!isInteractive) {
                return {
                    type: 'message',
                    messageType: 'error',
                    content: 'Session browser requires interactive mode.',
                };
            }
            // Return dialog action
            return {
                type: 'dialog',
                dialog: 'sessionBrowser',
            };
        }
        // Direct resume path (REQ-EN-002)
        const sessionRef = trimmedArgs;
        // Check active conversation guard (REQ-RC-010, REQ-RC-011)
        const activeConversation = hasActiveConversation(ctx);
        if (activeConversation) {
            // Non-interactive mode with active conversation is an error (REQ-RC-011)
            // Guard: config must exist and have isInteractive method
            const isInteractiveMode = typeof config?.isInteractive === 'function' && config.isInteractive();
            if (!isInteractiveMode) {
                return {
                    type: 'message',
                    messageType: 'error',
                    content: 'Cannot replace active conversation in non-interactive mode.',
                };
            }
            // Interactive mode with active conversation requires confirmation (REQ-RC-010)
            return {
                type: 'perform_resume',
                sessionRef,
                requiresConfirmation: true,
            };
        }
        // No active conversation - proceed without confirmation
        return {
            type: 'perform_resume',
            sessionRef,
        };
    },
};
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