random-tables-mcp/dist/use-cases/update-template-use-case.js

An MCP (Model Context Protocol) server for managing and rolling on random-table assets used in tabletop RPGs. Create, update, and roll on random tables with support for nested tables, weighted entries, and range-based results.

import { RollTemplateEntity } from '../domain/entities/roll-template-entity.js';
import { RollTemplate } from '../domain/value-objects/roll-template.js';
/**
 * Use case for updating an existing roll template.
 */
export class UpdateTemplateUseCase {
    /**
     * Creates a new UpdateTemplateUseCase instance.
     * @param templateRepository The repository to use for template updates.
     */
    constructor(templateRepository) {
        this.templateRepository = templateRepository;
    }
    /**
     * Executes the use case.
     * @param id The ID of the template to update.
     * @param updates Object containing the updates to apply.
     * @throws Error if the template does not exist.
     */
    async execute(id, updates) {
        // Get the existing template
        const existingTemplate = await this.templateRepository.getById(id);
        if (!existingTemplate) {
            throw new Error(`Template with ID ${id} does not exist`);
        }
        // Create a new template entity with updated values
        const updatedTemplate = new RollTemplateEntity(id, updates.name ?? existingTemplate.name, updates.description ?? existingTemplate.description, updates.template ? new RollTemplate(updates.template) : existingTemplate.template);
        // Update the template in the repository
        await this.templateRepository.update(updatedTemplate);
    }
}
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