/**
 * Copyright (c) Meta Platforms, Inc. and affiliates.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 *
 * @flow strict
 * @format
 */

'use strict';

import type {SchemaType} from '../../CodegenSchema';

const {
  generateSupportedApplePlatformsMacro,
} = require('./ComponentsProviderUtils');

// File path -> contents
type FilesOutput = Map<string, string>;

const FileTemplate = ({lookupFuncs}: {lookupFuncs: string}) => `
/*
 * This code was generated by [react-native-codegen](https://www.npmjs.com/package/react-native-codegen).
 *
 * Do not edit this file as changes may cause incorrect behavior and will be lost
 * once the code is regenerated.
 *
 * ${'@'}generated by GenerateRCTThirdPartyFabricComponentsProviderH
 */

#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wreturn-type-c-linkage"

#import <React/RCTComponentViewProtocol.h>

#ifdef __cplusplus
extern "C" {
#endif

Class<RCTComponentViewProtocol> RCTThirdPartyFabricComponentsProvider(const char *name);
#if RCT_NEW_ARCH_ENABLED
#ifndef RCT_DYNAMIC_FRAMEWORKS

${lookupFuncs}

#endif
#endif

#ifdef __cplusplus
}
#endif

#pragma GCC diagnostic pop

`;

const LookupFuncTemplate = ({
  className,
  libraryName,
}: {
  className: string,
  libraryName: string,
}) =>
  `
Class<RCTComponentViewProtocol> ${className}Cls(void) __attribute__((used)); // ${libraryName}
`.trim();

module.exports = {
  generate(
    schemas: {[string]: SchemaType},
    supportedApplePlatforms?: {[string]: {[string]: boolean}},
  ): FilesOutput {
    const fileName = 'RCTThirdPartyFabricComponentsProvider.h';

    const lookupFuncs = Object.keys(schemas)
      .map(libraryName => {
        const schema = schemas[libraryName];
        const librarySupportedApplePlatforms =
          supportedApplePlatforms?.[libraryName];
        const generatedLookup = Object.keys(schema.modules)
          .map(moduleName => {
            const module = schema.modules[moduleName];
            if (module.type !== 'Component') {
              return;
            }

            const {components} = module;
            // No components in this module
            if (components == null) {
              return null;
            }

            return Object.keys(components)
              .filter(componentName => {
                const component = components[componentName];
                return !(
                  component.excludedPlatforms &&
                  component.excludedPlatforms.includes('iOS')
                );
              })
              .map(componentName => {
                return LookupFuncTemplate({
                  className: componentName,
                  libraryName,
                });
              })
              .join('\n');
          })
          .filter(Boolean)
          .join('\n');

        return generateSupportedApplePlatformsMacro(
          generatedLookup,
          librarySupportedApplePlatforms,
        );
      })
      .join('\n');

    const replacedTemplate = FileTemplate({
      lookupFuncs,
    });

    return new Map([[fileName, replacedTemplate]]);
  },
};