import type { Constructor } from '@rsdk/common';
import type { Resource, RsdkMetadataProvider } from '@rsdk/metadata';

import type { Config } from '../config.abstract';
import type { ConfigSource } from '../sources';
import type {
  PropertyMetadata,
  SectionMetadata,
  SourceMetadata,
} from '../types';

import {
  CONFIG_PROPERTIES_RSDK_METADATA_SCOPE,
  CONFIG_SECTION_RSDK_METADATA_SCOPE,
  CONFIG_SOURCE_RSDK_METADATA_SCOPE,
} from './constants';
import type {
  PropertyRsdkMetadata,
  SectionRsdkMetadata,
  SourcesRsdkMetadata,
} from './types';

export class ConfigMetadataProvider {
  constructor(private rsdkMetadataProvider: RsdkMetadataProvider) {}

  getPropertiesMetadata(): Resource<PropertyRsdkMetadata>[] {
    return this.rsdkMetadataProvider.get<PropertyRsdkMetadata>(
      CONFIG_PROPERTIES_RSDK_METADATA_SCOPE,
    );
  }

  getMetadata(): Readonly<{
    sources: Map<Constructor<ConfigSource>, SourceMetadata>;
    sections: Map<Constructor<Config>, SectionMetadata>;
    properties: Map<string, PropertyMetadata>;
  }> {
    return {
      properties: this.getPropertiesMap(),
      sections: this.getSectionsMap(),
      sources: this.getSourcesMap(),
    };
  }

  getPropertiesMap(): Map<string, PropertyMetadata> {
    return new Map(
      this.getPropertiesMetadata().map(
        (resource) => [resource.value.alias, resource.value.metadata] as const,
      ),
    );
  }

  getSectionsMap(): Map<Constructor<Config>, SectionMetadata> {
    return new Map(
      this.getSectionsMetadata().map(
        (resource) => [resource.value.target, resource.value.metadata] as const,
      ),
    );
  }

  getSourcesMap(): Map<Constructor<ConfigSource>, SourceMetadata> {
    return new Map(
      this.getSourcesMetadata().map(
        (resource) => [resource.value.target, resource.value.metadata] as const,
      ),
    );
  }

  getSectionsMetadata(): Resource<SectionRsdkMetadata>[] {
    return this.rsdkMetadataProvider.get<SectionRsdkMetadata>(
      CONFIG_SECTION_RSDK_METADATA_SCOPE,
    );
  }

  private getSourcesMetadata(): Resource<SourcesRsdkMetadata>[] {
    return this.rsdkMetadataProvider.get<SourcesRsdkMetadata>(
      CONFIG_SOURCE_RSDK_METADATA_SCOPE,
    );
  }
}