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partners.go
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partners.go
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package services
import (
"context"
"fmt"
"io"
"mime/multipart"
"os"
"github.com/baza-trainee/ataka-help-backend/app/structs"
)
type PartnersRepo interface {
SelectAllPartners(context.Context, structs.PartnerQueryParameters) ([]structs.Partner, error)
InsertPartner(context.Context, structs.Partner, chan struct{}) error
DelPartnerByID(context.Context, string) (string, error)
CountRowsTable(context.Context, string) (int, error)
}
type PartnersService struct {
Repo PartnersRepo
}
func (s PartnersService) ReturnPartners(ctx context.Context, params structs.PartnerQueryParameters) ([]structs.Partner, int, error) {
total, err := s.Repo.CountRowsTable(ctx, "partners")
if err != nil {
return nil, 0, fmt.Errorf("error happens while CountRowsTable: %w", err)
}
params.Page, err = pagination(total, params.Limit, params.Page)
if err != nil {
return []structs.Partner{}, 0, err
}
partners, err := s.Repo.SelectAllPartners(ctx, params)
if err != nil {
return nil, 0, fmt.Errorf("error happens while SelectAllPartners: %w", err)
}
return partners, total, nil
}
func (p PartnersService) SavePartner(ctx context.Context, form *multipart.Form, chWell chan struct{}) error {
file := form.File["thumb"][0]
partner := structs.Partner{
Alt: form.Value["alt"][0],
Thumb: uniqueFilePath(file.Filename, uploadDirectory),
}
fileOpened, err := file.Open()
if err != nil {
return fmt.Errorf("error happens while file.Open(): %w", err)
}
osFile, err := os.OpenFile(partner.Thumb, os.O_WRONLY|os.O_CREATE, filePermition)
if err != nil {
return fmt.Errorf("error happens while os.OpenFile(): %w", err)
}
defer osFile.Close()
written, err := io.Copy(osFile, fileOpened)
if err != nil {
return fmt.Errorf(" written bytes: %v, error happens while io.Copy(): %w", written, err)
}
if err := p.Repo.InsertPartner(ctx, partner, chWell); err != nil {
if err := os.Remove(partner.Thumb); err != nil {
return fmt.Errorf("error happens while remove file: %w", err)
}
return fmt.Errorf("error happens while inserting: %w", err)
}
return nil
}
func (p PartnersService) DeletePartnerByID(ctx context.Context, ID string, chWell chan struct{}) error {
objectPath, err := p.Repo.DelPartnerByID(ctx, ID)
if err != nil {
return fmt.Errorf("error while delete partner: %w", err)
}
if err := os.Remove(objectPath); err != nil {
return fmt.Errorf("error happens while remove file: %w", err)
}
chWell <- struct{}{}
close(chWell)
return nil
}