import { FileSystem } from '../fs'
import { path } from '../path'

export function traverseDirectory(
    fs: FileSystem,
    dir: string,
    options: {
        extensions?: string[]
        ignore_extensions?: string[] | undefined
        visitor: (filePath: string) => void
    }
) {
    if (!FileSystem.existsSync(fs, dir)) {
        return
    }

    const files = fs.readdirSync(dir, { withFileTypes: true })
    const { extensions, ignore_extensions, visitor } = options || {}

    for (const file of files) {
        const filePath = path.resolve(dir, file.name)
        if (file.isDirectory()) {
            traverseDirectory(fs, filePath, options)
        } else if (
            ignore_extensions &&
            ignore_extensions.find((e) => filePath.toLocaleLowerCase().endsWith(e.toLocaleLowerCase()))
        ) {
            //skip
        } else if (
            !extensions ||
            extensions.length === 0 ||
            extensions.some((e) => filePath.toLocaleLowerCase().endsWith(e.toLocaleLowerCase()))
        ) {
            visitor(filePath)
        }
    }
}