item.go
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package service
import (
"bytes"
"encoding/json"
"fmt"
"io"
"io/ioutil"
"joongna/config"
"joongna/model"
"log"
"net/http"
"net/url"
"strconv"
"strings"
"time"
"github.com/PuerkitoBio/goquery"
"github.com/fedesog/webdriver"
)
func GetItemByKeyword(keyword string) ([]model.Item, error) {
var items []model.Item
itemsInfo := getItemsInfoByKeyword(keyword)
for _, itemInfo := range itemsInfo {
if itemInfo.CafeName != "중고나라" {
continue
}
itemUrl := itemInfo.Link
sold, price, thumbnailUrl, extraInfo := crawlingNaverCafe(itemUrl)
if sold == "판매 완료" {
continue
}
item := model.Item{
Platform: "중고나라",
Name: itemInfo.Title,
Price: price,
ThumbnailUrl: thumbnailUrl,
ItemUrl: itemUrl,
ExtraInfo: extraInfo,
}
fmt.Println(item)
items = append(items, item)
}
return items, nil
}
func getItemsInfoByKeyword(keyword string) []model.ApiResponseItem {
encText := url.QueryEscape("중고나라 " + keyword + " 판매중")
apiUrl := "https://openapi.naver.com/v1/search/cafearticle.json?query=" + encText + "&sort=sim"
req, err := http.NewRequest("GET", apiUrl, nil)
if err != nil {
log.Fatal(err)
}
req.Header.Add("X-Naver-Client-Id", config.Cfg.Secret.CLIENTID)
req.Header.Add("X-Naver-Client-Secret", config.Cfg.Secret.CLIENTSECRET)
client := &http.Client{}
resp, err := client.Do(req)
if err != nil {
log.Fatal(err)
}
defer func(Body io.ReadCloser) {
err := Body.Close()
if err != nil {
log.Fatal(err)
}
}(resp.Body)
response, _ := ioutil.ReadAll(resp.Body)
var apiResponse model.ApiResponse
err = json.Unmarshal(response, &apiResponse)
if err != nil {
log.Fatal(err)
}
return apiResponse.Items
}
func crawlingNaverCafe(cafeUrl string) (string, int, string, string) {
driver := webdriver.NewChromeDriver("./chromedriver")
err := driver.Start()
if err != nil {
log.Println(err)
}
desired := webdriver.Capabilities{"Platform": "MacOS"}
required := webdriver.Capabilities{}
session, err := driver.NewSession(desired, required)
if err != nil {
log.Println(err)
}
err = session.Url(cafeUrl)
if err != nil {
log.Println(err)
}
time.Sleep(time.Second * 1)
session.FocusOnFrame("cafe_main")
resp, err := session.Source()
html, err := goquery.NewDocumentFromReader(bytes.NewReader([]byte(resp)))
if err != nil {
log.Fatal(err)
}
sold := html.Find("div.sold_area").Text()
price := priceStringToInt(html.Find(".ProductPrice").Text())
thumbnailUrl, _ := html.Find("div.product_thumb img").Attr("src")
extraInfo := html.Find(".se-module-text").Text()
sold = strings.TrimSpace(sold)
thumbnailUrl = strings.TrimSpace(thumbnailUrl)
extraInfo = strings.TrimSpace(extraInfo)
return sold, price, thumbnailUrl, extraInfo
}
func priceStringToInt(priceString string) int {
strings.TrimSpace(priceString)
priceString = strings.ReplaceAll(priceString, "원", "")
priceString = strings.ReplaceAll(priceString, ",", "")
price, err := strconv.Atoi(priceString)
if err != nil {
log.Fatal(err)
}
return price
}