package main

import (
	"bytes"
	"fmt"
	"net/http"
	"time"

	"git.k6n.net/go-cart-actor/pkg/cart"
	"github.com/gogo/protobuf/proto"
)

type CartClient struct {
	httpClient *http.Client
	baseUrl    string
}

func NewCartClient(baseUrl string) *CartClient {
	return &CartClient{
		httpClient: &http.Client{Timeout: 10 * time.Second},
		baseUrl:    baseUrl,
	}
}

func (c *CartClient) ApplyMutation(cartId cart.CartId, mutation proto.Message) error {
	url := fmt.Sprintf("%s/internal/cart/%s/mutation", c.baseUrl, cartId.String())
	data, err := proto.Marshal(mutation)
	if err != nil {
		return err
	}
	req, err := http.NewRequest("POST", url, bytes.NewReader(data))
	if err != nil {
		return err
	}
	req.Header.Set("Content-Type", "application/protobuf")
	resp, err := c.httpClient.Do(req)
	if err != nil {
		return err
	}
	defer resp.Body.Close()
	if resp.StatusCode != http.StatusOK {
		return fmt.Errorf("cart mutation failed: %s", resp.Status)
	}
	return nil
}