// Package sql2go...
//
// Description : sql2go...
//
// Author : go_developer@163.com<白茶清欢>
//
// Date : 2021-10-25 4:50 下午
package sql2go

// sqlTypeMap mysql数据类型 => go 数据类型映射
//
// Author : go_developer@163.com<白茶清欢>
//
// Date : 4:50 下午 2021/10/25
var sqlTypeMap = map[string]string{
	"int":                "int",
	"integer":            "int",
	"tinyint":            "int8",
	"smallint":           "int16",
	"mediumint":          "int32",
	"bigint":             "int64",
	"int unsigned":       "uint",
	"integer unsigned":   "uint",
	"tinyint unsigned":   "uint8",
	"smallint unsigned":  "uint16",
	"mediumint unsigned": "uint32",
	"bigint unsigned":    "uint64",
	"bit":                "byte",
	"bool":               "bool",
	"enum":               "string",
	"set":                "string",
	"varchar":            "string",
	"char":               "string",
	"tinytext":           "string",
	"mediumtext":         "string",
	"text":               "string",
	"longtext":           "string",
	"blob":               "string",
	"tinyblob":           "string",
	"mediumblob":         "string",
	"longblob":           "string",
	"date":               "time.Time",
	"datetime":           "time.Time",
	"timestamp":          "time.Time",
	"time":               "time.Time",
	"float":              "float64",
	"double":             "float64",
	"decimal":            "float64",
	"binary":             "string",
	"varbinary":          "string",
}

const (
	// DaoTpl 模版
	DaoTpl = `// Package {PACKAGE} ...
//
// Description : {PACKAGE} ...
package {PACKAGE}

import (
    "gorm.io/gorm"
    "errors"
)

// {DATA_STRUCT_NAME} 数据库表的数据结构
{DATA_STRUCT}

// New{DATA_STRUCT_DAO} 获取DAO实例
func New{DATA_STRUCT_DAO}() *{DATA_STRUCT_DAO} {
    return &{DATA_STRUCT_DAO}{
        table : "{DB_TABLE_NAME}",
    }
}

// {DATA_STRUCT_DAO} sql2go tool generate
type {DATA_STRUCT_DAO} struct {
    table string
}

// GetDetailBy{PRIMARY_KEY} 根据主键ID获取详情
func ({DAO_RECEIVER} *{DATA_STRUCT_DAO}) GetDetailBy{PRIMARY_KEY}(dbInstance *gorm.DB, {PRIMARY_KEY} {PRIMARY_KEY_TYPE}) (*{DATA_STRUCT_NAME}, error) {
    var (
        err error
        detail {DATA_STRUCT_NAME}
    )
    if err = dbInstance.Table({DAO_RECEIVER}.table).Where("{PRIMARY_KEY_FIELD} = ?", {PRIMARY_KEY}).Limit(1).First(&detail).Error; nil != err {
        return nil, err
    }
    return &detail, nil
}

// GetList 获取数据列表
func ({DAO_RECEIVER} *{DATA_STRUCT_DAO}) GetList(dbInstance *gorm.DB, condition map[string]interface{}, limit int, offset int) ([]{DATA_STRUCT_NAME}, error) {
    if nil == condition {
        condition = make(map[string]interface{})
    }
    var (
        err error
        list []{DATA_STRUCT_NAME}
    )
    if err = dbInstance.Table({DAO_RECEIVER}.table).Where(condition).Limit(limit).Offset(offset).Find(&list).Error; nil != err {
        return make([]{DATA_STRUCT_NAME}, 0), err
    }
    return list, nil
}

// Create 创建数据
func ({DAO_RECEIVER} *{DATA_STRUCT_DAO}) Create(dbInstance *gorm.DB, data *{DATA_STRUCT_NAME}) error {
    if nil == data {
        return  errors.New("data is nil")
    }
    return dbInstance.Table({DAO_RECEIVER}.table).Create(data).Error
}
`
)