import minimist from 'minimist'

const strIsNull = (str: string | undefined) => str === null || str === undefined || str === ''

const argv: {
    _: Array<string>
    [key: string]: string | number | boolean | Array<string>
} = minimist(process.argv.slice(2))

/** process.env 参数 格式化  */
export const parseEnv = () => {
    let env: { [key: string]: any } = {}
    for (const key in process.env) {
        const v: string = process.env[key] ?? ''
        if (strIsNull(v)) env[key] = null
        else if (!isNaN(Number(v))) env[key] = Number(v)
        else env[key] = v
    }
    return env
}

export type TArgvs = {
    command: string
    [key: string]: boolean | string | Function | string[]
    alias: (origin: string, replaceKey: string) => TArgvs
}

/** 解析 process.argv 参数 */
export const parseArgv = (): TArgvs => {
    const argvs: TArgvs = {
        command: argv._[0],
        ...argv,
        alias: (origin: string, replacedKey: string) => {
            if (argvs[origin]) {
                argvs[replacedKey] = argvs[origin]
            }
            return argvs
        }
    }
    return argvs
}