kontor-echo: setup project to show homepage

kontor-echo/internal/helpers/auth.go

@@ -0,0 +1,7 @@
+package helpers
+
+import "strings"
+
+func EmptyUserPass(username, password string) bool {
+	return strings.Trim(username, " ") == "" || strings.Trim(password, " ") == ""
+}

kontor-echo/internal/helpers/token.go

@@ -0,0 +1,88 @@
+package helpers
+
+import (
+	"fmt"
+	"strings"
+	"time"
+
+	"github.com/golang-jwt/jwt/v5"
+	"github.com/labstack/echo/v5"
+	"github.com/spf13/viper"
+)
+
+func GenerateToken(profile_id string) (string, error) {
+
+	// token_lifespan := viper.GetInt("token_hour_lifespan")
+
+	claims := jwt.MapClaims{
+		"name":       "Thomas Peetz",
+		"admin":      true,
+		"authorized": true,
+		"sub":        profile_id,
+		"exp":        time.Now().Add(time.Hour * 72).Unix(),
+	}
+	// claims["authorized"] = true
+	// claims["profile_id"] = profile_id
+	// claims["exp"] = time.Now().Add(time.Hour * time.Duration(token_lifespan)).Unix()
+	token := jwt.NewWithClaims(jwt.SigningMethodHS256, claims)
+
+	return token.SignedString([]byte(viper.GetString("api_secret")))
+
+}
+
+func TokenValid(c *echo.Context) error {
+	logger := c.Logger()
+
+	tokenString := ExtractToken(c)
+	_, err := jwt.Parse(tokenString, func(token *jwt.Token) (interface{}, error) {
+		if _, ok := token.Method.(*jwt.SigningMethodHMAC); !ok {
+			logger.Info("TokenValid", "Unexpected signing method", token.Header["alg"])
+			return nil, fmt.Errorf("Unexpected signing method: %v", token.Header["alg"])
+		}
+		return []byte(viper.GetString("api_secret")), nil
+	})
+	if err != nil {
+		return err
+	}
+	return nil
+}
+
+func ExtractToken(c *echo.Context) string {
+	logger := c.Logger()
+
+	token := c.QueryParam("token")
+	if token != "" {
+		logger.Info("ExtractToken", "token from query", token)
+		return token
+	}
+	bearerToken := c.Request().Header.Get("Authorization")
+	if len(strings.Split(bearerToken, " ")) == 2 {
+		logger.Info("ExtractToken", "token from query", token)
+
+		return strings.Split(bearerToken, " ")[1]
+	}
+	return ""
+}
+
+func ExtractTokenID(c *echo.Context) (string, error) {
+
+	tokenString := ExtractToken(c)
+	token, err := jwt.Parse(tokenString, func(token *jwt.Token) (interface{}, error) {
+		if _, ok := token.Method.(*jwt.SigningMethodHMAC); !ok {
+			return nil, fmt.Errorf("Unexpected signing method: %v", token.Header["alg"])
+		}
+		return []byte(viper.GetString("api_secret")), nil
+	})
+	if err != nil {
+		return "", err
+	}
+	claims, ok := token.Claims.(jwt.MapClaims)
+	if ok && token.Valid {
+		uid, ok := claims["profile_id"].(string)
+		if !ok {
+			return "", err
+		}
+		return uid, nil
+	}
+	return "", nil
+}

kontor-echo/internal/helpers/url.go

@@ -0,0 +1,69 @@
+package helpers
+
+import (
+	"encoding/json"
+	"fmt"
+	"io/ioutil"
+	"log/slog"
+	"net/http"
+	"net/url"
+)
+
+func StripUrl(webLink string, keepParam string) string {
+	u, err := url.Parse(webLink)
+	if err != nil {
+		slog.Info("StripUrl", "error", err)
+		return webLink
+	}
+	values := u.Query()
+	for key := range values {
+		if key != keepParam {
+			values.Del(key)
+		}
+	}
+	u.RawQuery = values.Encode()
+	return u.String()
+}
+
+func GetParam(webLink string, param string) string {
+	u, err := url.Parse(webLink)
+	if err != nil {
+		slog.Info("StripUrl", "error", err)
+		return webLink
+	}
+	values := u.Query()
+	for key := range values {
+		if key == param {
+			return values.Get(key)
+		}
+	}
+	return ""
+}
+
+type OEmbedResponse struct {
+	Title string `json:"title"`
+}
+
+func GetVideoTitle(videoUrl string) (string, error) {
+	videoID := GetParam(videoUrl, "v")
+	// Construct the oEmbed URL
+	url := fmt.Sprintf("https://www.youtube.com/oembed?url=https://www.youtube.com/watch?v=%s&format=json", videoID)
+
+	resp, err := http.Get(url)
+	if err != nil {
+		return "", err
+	}
+	defer resp.Body.Close()
+
+	body, err := ioutil.ReadAll(resp.Body)
+	if err != nil {
+		return "", err
+	}
+
+	var data OEmbedResponse
+	if err := json.Unmarshal(body, &data); err != nil {
+		return "", err
+	}
+
+	return data.Title, nil
+}