package app

import (
	"cake_crm/internal/modules/messenger"
	"cake_crm/internal/modules/storage"
	"cake_crm/internal/services/cart"
	"cake_crm/internal/services/order"
	proto "cake_crm/proto"
	"context"
	"fmt"
	"google.golang.org/genproto/googleapis/api/httpbody"
	"os"
)

type Server struct {
	proto.UnsafeCRMServer
	storage      storage.IStorage
	messenger    messenger.IMessenger
	cartService  *cart.Service
	orderService *order.Service
}

func NewServer(
	storage storage.IStorage,
	messenger messenger.IMessenger,
	cartService *cart.Service,
	orderService *order.Service,
) proto.CRMServer {
	return &Server{
		storage:      storage,
		messenger:    messenger,
		cartService:  cartService,
		orderService: orderService,
	}
}

func (s *Server) GetCatalog(ctx context.Context, _ *proto.GetCatalogReq) (*proto.CatalogRsp, error) {
	categories, err := s.storage.GetCatalog(ctx)
	if err != nil {
		return nil, err
	}
	return &proto.CatalogRsp{Categories: categories}, nil
}

func (s *Server) GetPositions(ctx context.Context, req *proto.GetPositionsReq) (*proto.PositionsRsp, error) {
	products, err := s.storage.GetPositions(ctx, req.Id)
	if err != nil {
		return nil, err
	}
	return &proto.PositionsRsp{Products: products}, nil
}

func (s *Server) GetProduct(ctx context.Context, req *proto.GetProductReq) (*proto.ProductRsp, error) {
	product, err := s.storage.GetProduct(ctx, req.Id)
	if err != nil {
		return nil, err
	}
	return &proto.ProductRsp{Product: product}, nil
}

func (s *Server) GetBreadcrumbs(ctx context.Context, req *proto.GetBreadcrumbsReq) (*proto.BreadcrumbsRsp, error) {
	breadcrumbs, err := s.storage.GetBreadcrumbs(ctx, req.Id)
	if err != nil {
		return nil, err
	}
	return &proto.BreadcrumbsRsp{Categories: breadcrumbs}, nil
}

func (s *Server) Order(ctx context.Context, req *proto.OrderReq) (*proto.OrderRsp, error) {
	enrichItems, err := s.cartService.GetCart(ctx, req.Order.Items)
	if err != nil {
		return nil, err
	}
	text, err := s.orderService.CreateOrderText(req, enrichItems)
	if err != nil {
		return nil, err
	}
	return &proto.OrderRsp{}, s.messenger.SendMessage(text)
}

func (s *Server) GetCart(ctx context.Context, req *proto.CartReq) (*proto.CartRsp, error) {
	resp, err := s.cartService.GetCart(ctx, req.Items)
	if err != nil {
		return nil, err
	}
	return resp, nil
}

func (s *Server) GetImage(_ context.Context, req *proto.GetImageReq) (*httpbody.HttpBody, error) {
	data, err := os.ReadFile(fmt.Sprintf("resources/images/%s", req.Name))
	if err != nil {
		return nil, err
	}
	return &httpbody.HttpBody{
		ContentType: "image/jpeg",
		Data:        data,
	}, nil
}