package model

import (
	"time"

	"git.x2erp.com/qdy/go-db/sqldef"
)

func init() {
	sqldef.AddRegistration(func(r *sqldef.Registry) {
		tb := sqldef.NewTable("dim_table_field", "表字段字典").
			ID("id", 64).Comment("主键ID").End().
			String("project_id", 8).NotNull().Comment("项目编号").End().
			String("table_name", 64).NotNull().Comment("表名").End().
			String("field_name", 64).NotNull().Comment("字段名称（英文）").End().
			String("field_name_cn", 128).NotNull().Comment("字段中文名称").End().
			String("description", 128).Comment("字段描述").End().
			String("field_type", 64).NotNull().Comment("字段类型（如：varchar, int, datetime等）").End().
			Int("field_length").Comment("字段长度/精度").End().
			Bool("is_primary_key").Default("0").NotNull().Comment("是否为主键（0:否, 1:是）").End().
			Bool("is_nullable").Default("1").NotNull().Comment("是否允许为空（0:否, 1:是）").End().
			Int("decimal_places").Comment("小数位数（对于decimal类型）").End().
			String("creator", 32).NotNull().Comment("创建人").End().
			DateTime("created_at").NotNull().Default("CURRENT_TIMESTAMP").Comment("创建时间").End().
			DateTime("updated_at").NotNull().Default("CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP").Comment("更新时间").End()

		// 添加唯一索引：同一项目下同一表的字段名不能重复
		//tb.AddUniqueIndex("uk_project_table_field", "project_id", "table_name", "field_name")

		// 添加普通索引，方便查询
		tb.AddIndex("idx_project_id", "project_id")
		tb.AddIndex("idx_table_name", "table_name")
		tb.AddIndex("idx_field_name", "field_name")
		tb.AddIndex("idx_field_name_cn", "field_name_cn")
		tb.AddIndex("idx_description", "description")

		r.RegisterTable(tb.Build())
	})
}

// DimTableField 表字段字典结构体
type DimTableField struct {
	ID            string    `gorm:"column:id;type:varchar(64);primaryKey;comment:主键ID"`
	ProjectID     string    `gorm:"column:project_id;type:varchar(8);not null;index:idx_project_id;comment:项目编号"`
	TableName     string    `gorm:"column:table_name;type:varchar(64);not null;index:idx_table_name;comment:表名"`
	FieldName     string    `gorm:"column:field_name;type:varchar(64);not null;comment:字段名称（英文）"`
	FieldNameCN   string    `gorm:"column:field_name_cn;type:varchar(128);not null;comment:字段中文名称"`
	Description   string    `gorm:"column:description;type:text;comment:字段描述"`
	FieldType     string    `gorm:"column:field_type;type:varchar(64);not null;comment:字段类型（如：varchar, int, datetime等）"`
	FieldLength   *int      `gorm:"column:field_length;type:int;comment:字段长度/精度"`
	IsPrimaryKey  bool      `gorm:"column:is_primary_key;type:tinyint(1);not null;default:0;comment:是否为主键（0:否, 1:是）"`
	IsNullable    bool      `gorm:"column:is_nullable;type:tinyint(1);not null;default:1;comment:是否允许为空（0:否, 1:是）"`
	DecimalPlaces *int      `gorm:"column:decimal_places;type:int;comment:小数位数（对于decimal类型）"`
	Creator       string    `gorm:"column:creator;type:varchar(32);not null;comment:创建人"`
	CreatedAt     time.Time `gorm:"column:created_at;type:datetime;not null;default:CURRENT_TIMESTAMP;comment:创建时间"`
	UpdatedAt     time.Time `gorm:"column:updated_at;type:datetime;not null;default:CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP;comment:更新时间"`
}

func (DimTableField) DimTableField() string {
	return "dim_table_field"
}