package platformsetting

import (
	"context"
	"errors"
	"gorm.io/gorm"
	"gorm.io/gorm/clause"
	biz "kra/internal/biz/platformsetting"
	"kra/internal/data/ledger"
	"strconv"
	"time"
)

const key = "diamond_rate_cents"

type Provider interface{ DB() *gorm.DB }
type repo struct{ data Provider }

func NewRepo(data Provider) biz.Repo { return &repo{data: data} }
func (r *repo) Get(ctx context.Context) (*biz.Setting, error) {
	var row ledger.SettingPO
	err := r.data.DB().WithContext(ctx).Where(&ledger.SettingPO{Key: key}).First(&row).Error
	if errors.Is(err, gorm.ErrRecordNotFound) {
		return &biz.Setting{DiamondRateCents: 10}, nil
	}
	if err != nil {
		return nil, err
	}
	v, e := strconv.ParseInt(row.Value, 10, 64)
	if e != nil {
		v = 10
	}
	return &biz.Setting{DiamondRateCents: v}, nil
}
func (r *repo) Save(ctx context.Context, v *biz.Setting) error {
	row := ledger.SettingPO{Key: key, Value: strconv.FormatInt(v.DiamondRateCents, 10), UpdatedAt: time.Now()}
	return r.data.DB().WithContext(ctx).Clauses(clause.OnConflict{Columns: []clause.Column{{Name: "key"}}, DoUpdates: clause.AssignmentColumns([]string{"value", "updated_at"})}).Create(&row).Error
}