migrate from github

internal/repository/notification_repo/list.go

@@ -0,0 +1,74 @@
+package notification_repo
+
+import (
+	"github.com/XingfenD/yoresee_doc/internal/model"
+	"gorm.io/gorm"
+)
+
+type NotificationListOperation struct {
+	repo       *NotificationRepository
+	receiverID int64
+	status     *string
+	page       int
+	pageSize   int
+	tx         *gorm.DB
+}
+
+func (r *NotificationRepository) List(receiverID int64) *NotificationListOperation {
+	return &NotificationListOperation{
+		repo:       r,
+		receiverID: receiverID,
+	}
+}
+
+func (op *NotificationListOperation) WithTx(tx *gorm.DB) *NotificationListOperation {
+	op.tx = tx
+	return op
+}
+
+func (op *NotificationListOperation) WithStatus(status *string) *NotificationListOperation {
+	op.status = status
+	return op
+}
+
+func (op *NotificationListOperation) WithPagination(page, pageSize int) *NotificationListOperation {
+	op.page = page
+	op.pageSize = pageSize
+	return op
+}
+
+func (op *NotificationListOperation) ExecWithTotal() ([]model.Notification, int64, error) {
+	db := op.repo.db
+	if op.tx != nil {
+		db = op.tx
+	}
+
+	query := db.Model(&model.Notification{}).Where("receiver_id = ?", op.receiverID)
+	if op.status != nil && *op.status != "" {
+		query = query.Where("status = ?", *op.status)
+	}
+
+	var total int64
+	if err := query.Count(&total).Error; err != nil {
+		return nil, 0, err
+	}
+
+	page := op.page
+	pageSize := op.pageSize
+	if page <= 0 {
+		page = 1
+	}
+	if pageSize <= 0 {
+		pageSize = 10
+	}
+	if pageSize > 100 {
+		pageSize = 100
+	}
+	offset := (page - 1) * pageSize
+
+	var list []model.Notification
+	if err := query.Order("created_at DESC").Offset(offset).Limit(pageSize).Find(&list).Error; err != nil {
+		return nil, 0, err
+	}
+	return list, total, nil
+}