import { findWorkspaceDir } from '@pnpm/find-workspace-dir'
import { realpath } from 'fs/promises'
import findUp from 'find-up'
import { ProjectRootError } from '../error'
import path from 'path'

/**
 * Can find the root path of the package and monorepo
 */
export const findProjectRoot = async (): Promise<string> => {
    let projectRoot = await findWorkspaceDir(process.cwd())
    if (!projectRoot) {
        const packageJSONPath = await findUp('package.json', { cwd: await realpath(process.cwd()) })
        projectRoot = packageJSONPath ? path.parse(packageJSONPath).dir : undefined
    }

    if (!projectRoot) {
        throw new ProjectRootError()
    }

    return projectRoot
}