/**
 * Service config get command
 */

import { getContainerServiceByServiceId } from '../../services/container-service';
import { getArg, validateRequiredArgs } from '../parser';
import type { CommandResult } from '../types';

/**
 * Handle service config get command
 *
 * Usage: celilo service config get <service-id> [key]
 *
 * @param args - Command arguments
 * @returns Command result
 */
export async function handleServiceConfigGet(args: string[]): Promise<CommandResult> {
  const error = validateRequiredArgs(args, 1);
  if (error) {
    return {
      success: false,
      error: `${error}\n\nUsage: celilo service config get <service-id> [key]`,
    };
  }

  const serviceId = getArg(args, 0);
  const key = getArg(args, 1);

  if (!serviceId) {
    return {
      success: false,
      error: 'Service ID is required',
    };
  }

  const service = await getContainerServiceByServiceId(serviceId);
  if (!service) {
    return {
      success: false,
      error: `Service not found: ${serviceId}`,
    };
  }

  // Configurable fields
  const configurableFields: Record<string, unknown> = {
    name: service.name,
    zones: service.zones,
    providerConfig: service.providerConfig,
  };

  if (key) {
    // Get specific config value
    if (!(key in configurableFields)) {
      const validKeys = Object.keys(configurableFields).join(', ');
      return {
        success: false,
        error: `Invalid config key '${key}' for service.\n\nValid keys: ${validKeys}`,
      };
    }

    const value = configurableFields[key];
    const formatted = typeof value === 'object' ? JSON.stringify(value, null, 2) : String(value);

    return {
      success: true,
      message: `${key} = ${formatted}`,
      data: { key, value },
    };
  }

  // Get all config for service
  const lines = [`Configuration for ${serviceId}:`, ''];
  for (const [configKey, value] of Object.entries(configurableFields)) {
    const formatted = typeof value === 'object' ? JSON.stringify(value) : String(value);
    lines.push(`${configKey} = ${formatted}`);
  }

  return {
    success: true,
    message: lines.join('\n'),
    data: configurableFields,
  };
}