add cron job to sync currencies once in 24 hours

pkg/repository/currency.go

@@ -0,0 +1,84 @@
+package repository
+
+import (
+	"context"
+	"log"
+	"time"
+	"wallet-api/pkg/model"
+
+	"github.com/go-pg/pg/v10"
+)
+
+type CurrencyRepository struct {
+	db     *pg.DB
+	logger *log.Logger
+}
+
+func NewCurrencyRepository(db *pg.DB, logger *log.Logger) *CurrencyRepository {
+	return &CurrencyRepository{
+		db:     db,
+		logger: logger,
+	}
+}
+
+/*
+GetFirst
+
+Gets first row from Currency table.
+
+	   	Args:
+	   		context.Context: Application context
+		Returns:
+			model.CurrencyModel: Currency object from database.
+*/
+func (as CurrencyRepository) Sync(ctx context.Context, rate *model.Rate, tx *pg.Tx) *model.Currency {
+	currency := new(model.Currency)
+	currency.Name = rate.Code
+
+	any := tx.Model(currency).Where("name = ?", rate.Code).First()
+	currency.Rate = float32(rate.Rate)
+	if any != nil {
+		currency.Init()
+		_, err := tx.Model(currency).Insert()
+		if err != nil {
+			as.logger.Println(err)
+			return nil
+		}
+	} else {
+		currency.DateUpdated = time.Now()
+		_, err := tx.Model(currency).WherePK().Update()
+		if err != nil {
+			as.logger.Println(err)
+			return nil
+		}
+	}
+	return currency
+}
+
+/*
+GetFirst
+
+Gets first row from Currency table.
+
+	   	Args:
+	   		context.Context: Application context
+		Returns:
+			model.CurrencyModel: Currency object from database.
+*/
+func (as CurrencyRepository) SyncBulk(ctx context.Context, rates *[]model.Rate) *[]model.Currency {
+	tx, _ := as.db.BeginContext(ctx)
+	defer tx.Rollback()
+
+	currencies := new([]model.Currency)
+
+	for _, r := range *rates {
+		currency := as.Sync(ctx, &r, tx)
+		if currency != nil {
+			*currencies = append(*currencies, *currency)
+		}
+	}
+
+	tx.Commit()
+
+	return currencies
+}