import fs from 'fs-extra'

const utils = {
    async checkExist(fullPath: string) {
        try {
            return new Promise((ok) => {
                fs.exists(fullPath, ok)
            })
        } catch (e) {
            return false
        }
    },
    async remove(fullPath: string) {
        try {
            return new Promise((ok) => {
                fs.remove(fullPath, (e) => {
                    ok(!e)
                })
            })
        } catch (e) {
            return false
        }
    },
    async readFile(fullPath: string, encoding: BufferEncoding = 'utf8'): Promise<string> {
        return await fs.readFile(fullPath, {encoding})
    },
    async rename(oldFullPath: string, newFullPath: string, overwrite?: boolean) {
        try {
            const isSame = oldFullPath === newFullPath
            if (isSame) return true
            const isExistBefore = await utils.checkExist(oldFullPath)
            if (!isExistBefore) return false
            const isConflictSameName = await utils.checkExist(newFullPath)
            if (!isConflictSameName) {
                await fs.rename(oldFullPath, newFullPath)
                return true
            }
            if (isConflictSameName && overwrite) {
                await utils.remove(newFullPath)
                await fs.rename(oldFullPath, newFullPath)
                return true
            }
            if (isConflictSameName && !overwrite) return false
            await fs.rename(oldFullPath, newFullPath)
            return true
        } catch (e) {
            return false
        }
    },
    async restoreTestFolder() {
        //remove eache folders inside test folder
        const isExist1 = await utils.checkExist(`./test_folder/f1`)
        const isExist2 = await utils.checkExist(`./test_folder/f2`)
        const isExist3 = await utils.checkExist(`./test_folder/f3`)
        if (isExist1)
            await utils.remove(`./test_folder/f1`)
        if (isExist2)
            await utils.remove(`./test_folder/f2`)
        if (isExist3)
            await utils.remove(`./test_folder/f3`)
        //rewrite each file in each folder (or create)
        fs.mkdirpSync(`./test_folder/f1`)
        fs.mkdirpSync(`./test_folder/f2`)
        fs.writeFileSync(`./test_folder/f1/f1.txt`, 'test file 1', 'utf8')
        fs.writeFileSync(`./test_folder/f2/f2.txt`, 'test file 2', 'utf8')
        console.log('🍎 test folder restored 🍎')
    },
    getNameByConfig(config: { ext?: string, name?: string }): string {
        const isAlreadyExt = !!config.name && !!config?.ext && config.name.endsWith(config.ext)
        if (isAlreadyExt) {
            return config.name || ''
        }
        return `${config.name}${!!config?.ext ? ('.' + config.ext) : ('')}`
    },
    getNameRenameConfig(config: { ext?: string, name?: string, renameTo?: string }): string {
        const newName = !!config?.renameTo ? config?.renameTo : config.name
        return this.getNameByConfig({name: newName, ext: config.ext})
    }
}

export default utils