package database

import (
	"context"
	"fmt"
	"time"

	"github.com/redis/go-redis/v9"
	"go.uber.org/zap"
)

// RedisConfig Redis 配置
type RedisConfig struct {
	Address      string
	Password     string
	DB           int
	PoolSize     int
	MinIdleConns int
	DialTimeout  time.Duration
	ReadTimeout  time.Duration
	WriteTimeout time.Duration
}

// NewRedisClient 创建新的 Redis 客户端
func NewRedisClient(cfg RedisConfig, logger *zap.Logger) (*redis.Client, error) {
	client := redis.NewClient(&redis.Options{
		Addr:            cfg.Address,
		Password:        cfg.Password,
		DB:              cfg.DB,
		PoolSize:        cfg.PoolSize,
		MinIdleConns:    cfg.MinIdleConns,
		DialTimeout:     cfg.DialTimeout,
		ReadTimeout:     cfg.ReadTimeout,
		WriteTimeout:    cfg.WriteTimeout,
		MaxRetries:      3,
		PoolTimeout:     4 * time.Second,
		DisableIdentity: true,
	})

	// 测试连接
	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
	defer cancel()

	if err := client.Ping(ctx).Err(); err != nil {
		return nil, fmt.Errorf("redis连接错误: %w", err)
	}

	logger.Info("Redis 连接成功",
		zap.String("address", cfg.Address),
		zap.Int("db", cfg.DB),
	)

	return client, nil
}