// Package util provide some utility functions
package util

import (
	"errors"
	"time"

	"github.com/redis/go-redis/v9"
)

type RedisOptions struct {
	redisOptions *redis.Options
	timeout      time.Duration
}

type RedisOption func(*RedisOptions) error

// WithPassword define func of configure redis password options
func WithPassword(password string) RedisOption {
	return func(o *RedisOptions) error {
		if password == "" {
			return errors.New("password is empty")
		}
		o.redisOptions.Password = password
		return nil
	}
}

// WithTimeout define func of configure redis timeout options
func WithTimeout(timeout time.Duration) RedisOption {
	return func(o *RedisOptions) error {
		if timeout < 0 {
			return errors.New("timeout can not be negative")
		}
		o.timeout = timeout
		return nil
	}
}

// WithDB define func of configure redis db options
func WithDB(db int) RedisOption {
	return func(o *RedisOptions) error {
		if db < 0 {
			return errors.New("db can not be negative")
		}
		o.redisOptions.DB = db
		return nil
	}
}

// WithPoolSize define func of configure pool size options
func WithPoolSize(poolSize int) RedisOption {
	return func(o *RedisOptions) error {
		if poolSize <= 0 {
			return errors.New("pool size must be greater than 0")
		}
		o.redisOptions.PoolSize = poolSize
		return nil
	}
}