import { getProjectRoot } from "./getProjectRoot.js";
import { findOperationBasePath } from "./findOperationBasePath.js";
import { getPathParse } from "./getPathParse.js";
import { getOperationRelativePath } from "./getOperationRelativePath.js";
import { Operation, OperationPathParse } from "../../types/index.js";
import path from "node:path";
import { getLastFolder } from "../fs-util/js.js";
import { readJsonFileSync } from "../fs-util/readJsonFile.js";
import { makeRelative } from "../../fs-util-js/makeRelative.js";

/**
 * get all operation-related path information that can be inferred from the path
 *
 * NB: currently it also looks up the operation name from its packagejson
 */
export const getOperationPathParse = (
  absolutePath: string,
): OperationPathParse | undefined => {
  if (!absolutePath) return;
  const pathParse = getPathParse(absolutePath);
  if (!pathParse) return;
  const projectRoot = getProjectRoot(absolutePath);
  if (!projectRoot) return;
  const operationBasePath = findOperationBasePath(absolutePath);
  if (!operationBasePath) return;
  const operationSrcPath = path.join(operationBasePath, "src");

  const operationFolderName = getLastFolder(operationBasePath);
  const operationName = readJsonFileSync<Operation>(
    path.join(operationBasePath, "package.json"),
  )?.name;

  const operationRelativeTypescriptFilePath = getOperationRelativePath(
    absolutePath,
    operationBasePath,
  );

  const parsedPath = path.parse(absolutePath);
  const srcFileId = makeRelative(
    path.join(parsedPath.dir, parsedPath.name),
    operationSrcPath,
  );

  const relativeOperationBasePathFromProjectRoot = operationBasePath.slice(
    projectRoot.length,
  );

  return {
    relativePathFromProjectRoot: pathParse.relativePathFromProjectRoot,
    srcFileId,
    operationFolderName,
    operationRelativeTypescriptFilePath,
    relativeOperationBasePathFromProjectRoot,
    operationName,
  };
};