118 lines
2.4 KiB
Go
118 lines
2.4 KiB
Go
package db
|
|
|
|
import (
|
|
"errors"
|
|
"fmt"
|
|
"log"
|
|
"os"
|
|
"sync"
|
|
"time"
|
|
|
|
"gorm.io/driver/sqlite"
|
|
"gorm.io/gorm"
|
|
"gorm.io/gorm/logger"
|
|
)
|
|
|
|
var udb *gorm.DB
|
|
var conMu sync.Mutex
|
|
|
|
var (
|
|
ERROR_DB_NOT_INIT = errors.New("Database connection is not initialized")
|
|
)
|
|
|
|
func Init() error {
|
|
dbc := Connect()
|
|
// Seeds
|
|
if err := initStateOfDb(dbc); err != nil {
|
|
return fmt.Errorf("initStateOfDb: %w", err)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func Connect() *gorm.DB {
|
|
conMu.Lock()
|
|
defer conMu.Unlock()
|
|
if udb != nil {
|
|
return udb
|
|
}
|
|
logFile, err := os.OpenFile("db.log", os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0644)
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
newLogger := logger.New(
|
|
log.New(logFile, "\r\n", log.LstdFlags),
|
|
logger.Config{
|
|
SlowThreshold: time.Second,
|
|
LogLevel: logger.Error,
|
|
IgnoreRecordNotFoundError: true,
|
|
ParameterizedQueries: true,
|
|
Colorful: false,
|
|
},
|
|
)
|
|
gormDB, err := gorm.Open(sqlite.Open("gonuts.db"), &gorm.Config{
|
|
Logger: newLogger,
|
|
})
|
|
if err != nil {
|
|
log.Panic(err)
|
|
}
|
|
newUDB := gormDB
|
|
gormDB.AutoMigrate(&Card{})
|
|
gormDB.AutoMigrate(&Category{})
|
|
gormDB.AutoMigrate(&Item{})
|
|
gormDB.AutoMigrate(&ItemPrice{})
|
|
gormDB.AutoMigrate(&Payment{})
|
|
gormDB.AutoMigrate(&ItemBought{})
|
|
gormDB.AutoMigrate(&Income{})
|
|
gormDB.AutoMigrate(&Debt{})
|
|
gormDB.AutoMigrate(&Transfer{})
|
|
gormDB.AutoMigrate(&User{})
|
|
gormDB.AutoMigrate(&Type{})
|
|
gormDB.AutoMigrate(&Session{})
|
|
gormDB.AutoMigrate(&Expense{})
|
|
gormDB.AutoMigrate(&Metric{})
|
|
gormDB.AutoMigrate(&Currency{})
|
|
return newUDB
|
|
}
|
|
|
|
var (
|
|
CANT_FIND_METRIC = errors.New("Can't find proper metrics in database")
|
|
)
|
|
|
|
func initMetrics(tx *gorm.DB) error {
|
|
var metrics []Metric
|
|
if err := tx.Find(&metrics).Error; err != nil {
|
|
return err
|
|
}
|
|
metricsThatNeeded := []*Metric{
|
|
&Metric{Name: "None", Short: "pcs", Value: 0},
|
|
&Metric{Name: "Gram", Short: "g", Value: 1},
|
|
&Metric{Name: "Kilogram", Short: "kg", Value: 2},
|
|
&Metric{Name: "Liter", Short: "l", Value: 3},
|
|
}
|
|
if len(metrics) == 0 {
|
|
for _, m := range metricsThatNeeded {
|
|
if err := tx.Create(m).Error; err != nil {
|
|
return err
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
for _, m := range metricsThatNeeded {
|
|
tmp := &Metric{}
|
|
if err := tx.Find(tmp, m).Error; err != nil {
|
|
return err
|
|
}
|
|
if tmp.ID == 0 {
|
|
return CANT_FIND_METRIC
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func initStateOfDb(tx *gorm.DB) error {
|
|
if err := initMetrics(tx); err != nil {
|
|
return fmt.Errorf("initMetrics: %w", err)
|
|
}
|
|
return nil
|
|
}
|