some

api/fetch/fetch.go

@@ -2,7 +2,6 @@ package fetch
 
 import (
 	"net/http"
-	"net/url"
 )
 
 func Fetch(url string) (*http.Response, error) {
@@ -13,4 +12,3 @@ func Fetch(url string) (*http.Response, error) {
 
 	return http.Get(url)
 }
-

api/server.go

@@ -1,28 +1,31 @@
 package main
 
 import (
+	"io"
 	"net/http"
 	"net/url"
-	"io"
+	"strings"
+
+	"golang.org/x/net/html"
 
 	"github.com/gin-gonic/gin"
 )
 
 func main() {
 	r := gin.Default()
-	r.GET("/fetch/:url", fetchRoute)
+	r.GET("/bl/:bundesland", bundesland)
 	r.Run("localhost:8080")
 }
 
-func fetchRoute(c *gin.Context) {
-	url := c.Param("url")
-	if url == "" {
+func bundesland(c *gin.Context) {
+	bundesland := c.Param("bundesland")
+	if bundesland == "" {
 		c.JSON(http.StatusBadRequest, gin.H{
-			"error": "url is required",
+			"error": "bundesland is required",
 		})
 		return
 	}
-	resp, err := Fetch(url)
+	resp, err := Fetch("bl/" + bundesland)
 	if err != nil {
 		c.JSON(http.StatusInternalServerError, gin.H{
 			"error": err.Error(),
@@ -37,19 +40,39 @@ func fetchRoute(c *gin.Context) {
 		})
 		return
 	}
-	d = string(d)
-	c.JSON(http.StatusOK, d)
-
+	html := string(d)
+	scraped := ScrapeBundesland(html)
+	c.JSON(http.StatusOK, scraped)
 }
 
 func Fetch(path string) (*http.Response, error) {
 	baseurl := "https://www.imensa.de/"
-	queryurl  := baseurl + "/" + path
+	queryurl := baseurl + "/" + path
 	u, err := url.ParseRequestURI(queryurl)
 	if err != nil {
 		return nil, err
 	}
-
 	return http.Get(u.String())
-
+}
+
+func ScrapeBundesland(h string) []string {
+	tkn := html.NewTokenizer(strings.NewReader(h))
+
+	var mensen []string
+
+	for {
+		if tkn.Next() == html.ErrorToken {
+			return mensen
+		}
+
+		t := tkn.Token()
+		attr := t.Attr
+
+		for _, a := range attr {
+			if a.Key == "class" && a.Val == "elements" {
+				print(t.Data)
+				mensen = append(mensen, t.Data)
+			}
+		}
+	}
 }