package database

import (
	"fmt"
	"strconv"
	"strings"
)

type Config struct {
	Type            string `toml:"type"`             //数据库类型 mysql or pgsql
	Host            string `toml:"host"`             //数据库名称
	Port            int    `toml:"port"`             //数据库名称
	Debug           bool   `toml:"debug"`            //调试开关（会在日志打印SQL)
	Dbname          string `toml:"dbname"`           //数据库名称
	Username        string `toml:"username"`         //数据库用户名
	Password        string `toml:"password"`         //数据库连接密码
	ExtraParameters string `toml:"extra_parameters"` //数据库连接扩展参数
}

func GetDsn(dbcfg *Config) (dsn string) {
	switch dbcfg.Type {
	case "mysql":
		//dsn := "user:pass@tcp(127.0.0.1:3306)/dbname?charset=utf8mb4&parseTime=True&loc=Local"
		dsn = fmt.Sprintf(
			"%s:%s@tcp(%s:%d)/%s?%s",
			dbcfg.Username,
			dbcfg.Password,
			dbcfg.Host,
			dbcfg.Port,
			dbcfg.Dbname,
			dbcfg.ExtraParameters,
		)
	case "pgsql":
		//dsn := "host=localhost user=gorm password=gorm dbname=gorm port=9920 sslmode=disable TimeZone=Asia/Shanghai"
		arrConfStr := []string{
			"host=" + dbcfg.Host,
			"port=" + strconv.Itoa(dbcfg.Port),
			"user=" + dbcfg.Username,
			"password=" + dbcfg.Password,
			"dbname=" + dbcfg.Dbname,
			dbcfg.ExtraParameters,
		}
		dsn = strings.Join(arrConfStr, " ")
	default:
		panic("DATABASE TYPE '" + dbcfg.Type + "' NOT SUPPORT (only mysql or pgsql)")
	}
	return dsn
}