import { Module, DsgContext } from "@amplication/code-gen-types";
import { join } from "path";
import {
  AUTH_ENTITY_ERROR,
  AUTH_ENTITY_LOG_ERROR,
  templatesPath,
} from "../constants";
import { readFile } from "@amplication/code-gen-utils";
import {
  addImports,
  importNames,
  interpolate,
  removeTSClassDeclares,
} from "../util/ast";
import { builders, namedTypes } from "ast-types";
import { print } from "@amplication/code-gen-utils";
import { camelCase } from "lodash";

const jwtStrategySpecPath = join(
  templatesPath,
  "jwt.strategy.template.spec.ts"
);

export async function createJwtStrategySpec(
  dsgContext: DsgContext
): Promise<Module> {
  return await mapJwtStrategySpecTemplate(
    dsgContext,
    jwtStrategySpecPath,
    "jwt.strategy.spec.ts"
  );
}

async function mapJwtStrategySpecTemplate(
  context: DsgContext,
  templatePath: string,
  fileName: string
): Promise<Module> {
  const { entities, resourceInfo, serverDirectories } = context;
  const authEntity = entities?.find(
    (x) => x.name === resourceInfo?.settings.authEntityName
  );
  if (!authEntity) {
    context.logger.error(AUTH_ENTITY_LOG_ERROR);
    throw new Error(AUTH_ENTITY_ERROR);
  }

  try {
    const entityServiceName = `${authEntity?.name}Service`;
    const entityNameToLower = authEntity.name.toLowerCase();

    const template = await readFile(templatePath);
    const authServiceNameId = builders.identifier(entityServiceName);

    const entityServiceImport = importNames(
      [authServiceNameId],
      `../../../${entityNameToLower}/${entityNameToLower}.service`
    );

    addImports(
      template,
      [entityServiceImport].filter(
        (x) => x //remove nulls and undefined
      ) as namedTypes.ImportDeclaration[]
    );

    const templateMapping = {
      ENTITY_SERVICE: builders.identifier(`${entityServiceName}`),
      FIND_ONE_FUNCTION: builders.identifier(`${camelCase(authEntity?.name)}`),
    };

    const filePath = `${serverDirectories.srcDirectory}/tests/auth/jwt/${fileName}`;

    interpolate(template, templateMapping);

    removeTSClassDeclares(template);

    return {
      code: print(template).code,
      path: filePath,
    };
  } catch (error) {
    console.error(error);
    return { code: "", path: "" };
  }
}