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u-desk/internal/database/db.go

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package database
import (
"errors"
"fmt"
"u-desk/internal/model"
"time"
mysqldriver "github.com/go-sql-driver/mysql"
"gorm.io/driver/mysql"
"gorm.io/gorm"
"gorm.io/gorm/logger"
)
var (
ErrNotConnected = errors.New("数据库未连接")
)
// DB 数据库连接封装
type DB struct {
db *gorm.DB
}
var globalDB *DB
// Init 初始化数据库连接
func Init() (*DB, error) {
if globalDB != nil {
return globalDB, nil
}
// 数据库配置 - 测试服 lab_dev
// 测试机外网IP: 39.99.243.191
// 使用 mysqldriver.Config 结构体构建 DSN自动处理密码中的特殊字符
config := mysqldriver.Config{
User: "root",
Passwd: "123456",
Net: "tcp",
Addr: "127.0.0.1:3306",
DBName: "lab_dev",
Params: map[string]string{"charset": "utf8mb4", "parseTime": "True", "loc": "Local"},
AllowNativePasswords: true,
}
dsn := config.FormatDSN()
// GORM 配置
gormConfig := &gorm.Config{
Logger: logger.Default.LogMode(logger.Info),
}
db, err := gorm.Open(mysql.Open(dsn), gormConfig)
if err != nil {
return nil, fmt.Errorf("打开数据库连接失败: %v", err)
}
// 获取底层 sql.DB 设置连接池参数
sqlDB, err := db.DB()
if err != nil {
return nil, fmt.Errorf("获取数据库实例失败: %v", err)
}
// 测试连接
if err := sqlDB.Ping(); err != nil {
return nil, fmt.Errorf("数据库连接测试失败: %v", err)
}
// 设置连接池参数
sqlDB.SetMaxOpenConns(25)
sqlDB.SetMaxIdleConns(5)
sqlDB.SetConnMaxLifetime(time.Duration(300) * time.Second)
globalDB = &DB{db: db}
return globalDB, nil
}
// QueryUsers 查询用户列表
func (d *DB) QueryUsers(keyword string, status int, role int, organid int, page int, pageSize int, sortField string, sortOrder string) (map[string]interface{}, error) {
if d.db == nil {
return nil, ErrNotConnected
}
query := d.db.Model(&model.MemberInfo{})
// 关键字搜索(姓名、账号、电话)
if keyword != "" {
query = query.Where("membername LIKE ? OR account LIKE ? OR contactphone LIKE ?",
"%"+keyword+"%", "%"+keyword+"%", "%"+keyword+"%")
}
// 状态筛选
if status > 0 {
query = query.Where("status = ?", status)
} else {
// 默认过滤删除状态
query = query.Where("status != ?", 3)
}
// 角色筛选(需要关联查询,暂时简化)
if role > 0 {
// TODO: 关联 sys_member_role 表查询
}
// 机构筛选
if organid > 0 {
query = query.Where("organid = ?", organid)
}
// 排序
if sortField != "" {
if sortOrder == "descend" || sortOrder == "desc" {
query = query.Order(sortField + " DESC")
} else {
query = query.Order(sortField + " ASC")
}
} else {
// 默认按创建时间倒序
query = query.Order("createtime DESC")
}
// 总数
var total int64
query.Count(&total)
// 分页
offset := (page - 1) * pageSize
var users []model.MemberInfo
if err := query.Offset(offset).Limit(pageSize).Find(&users).Error; err != nil {
return nil, fmt.Errorf("查询用户失败: %v", err)
}
// 返回结果
result := map[string]interface{}{
"rows": users,
"total": total,
}
return result, nil
}