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database.go
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database.go
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package goappbase
import (
"log"
"github.com/glebarez/sqlite"
gorm "gorm.io/gorm"
"gorm.io/gorm/schema"
)
const dbFileName = "data.db"
type DbSchemaType struct {
schema []interface{}
db *gorm.DB
}
var DbSchema *DbSchemaType
func init() {
DbSchema = &DbSchemaType{}
DbSchema.schema = make([]interface{}, 0)
}
func (schema *DbSchemaType) AddModel(model interface{}) {
schema.schema = append(schema.schema, model)
}
func (schema *DbSchemaType) GetDb() *gorm.DB {
return schema.db
}
func (db_schema *DbSchemaType) Open() (*gorm.DB, error) {
var err error
db_schema.db, err = gorm.Open(sqlite.Open(dbFileName), &gorm.Config{
NamingStrategy: schema.NamingStrategy{
SingularTable: true, // use singular table name, table for `User` would be `user` with this option enabled
},
})
if err != nil {
return nil, err
}
log.Printf("Database %s opened\n", dbFileName)
// Migrate the schema
for i := 0; i < len(db_schema.schema); i++ {
db_schema.db.AutoMigrate(db_schema.schema[i])
}
log.Println("Database migration done")
return db_schema.db, nil
}
func (schema *DbSchemaType) Close() {
sqlDB, err := schema.db.DB()
if err != nil {
sqlDB.Close()
}
log.Printf("Database %s closed\n", dbFileName)
schema.db = nil
}