import type { IModuleClient, ModuleSettingsEntryContribution } from "@erp/core/client";

import type { SettingsSectionCatalogItem } from "./settings-section-catalog";

export interface SettingsNavigationEntry extends ModuleSettingsEntryContribution {
  moduleName: string;
}

export interface SettingsNavigationSection extends SettingsSectionCatalogItem {
  entries: SettingsNavigationEntry[];
}

const buildSectionMap = (sections: SettingsSectionCatalogItem[]) => {
  return new Map(sections.map((section) => [section.id, section]));
};

export const buildSettingsNavigation = ({
  modules,
  sections,
}: {
  modules: IModuleClient[];
  sections: SettingsSectionCatalogItem[];
}): SettingsNavigationSection[] => {
  const sectionMap = buildSectionMap(sections);
  const entriesBySection = new Map<string, SettingsNavigationEntry[]>();

  for (const module of modules) {
    if (!module.settings) {
      continue;
    }

    for (const entry of module.settings.entries) {
      const section = sectionMap.get(entry.sectionId);

      if (!section) {
        throw new Error(
          `[Settings] El módulo "${module.name}" declara la sección inexistente "${entry.sectionId}".`
        );
      }

      const sectionEntries = entriesBySection.get(entry.sectionId) ?? [];

      sectionEntries.push({
        ...entry,
        moduleName: module.name,
      });

      entriesBySection.set(entry.sectionId, sectionEntries);
    }
  }

  return sections
    .map((section) => ({
      ...section,
      entries: entriesBySection.get(section.id) ?? [],
    }))
    .filter((section) => section.entries.length > 0);
};