package ginctx

import (
	"errors"
	"strings"

	"github.com/gin-gonic/gin"
)

func GetAuthorization(c *gin.Context, key string) (string, error) {
	h := c.GetHeader("Authorization")
	if h == "" {
		return "", errors.New("GetAuthorization: header missing")
	}

	// TODO (pipo) : this sucks, must be done properly eventually
	parts := strings.Fields(h)
	if len(parts) == 2 && strings.EqualFold(parts[0], key) {
		token := strings.TrimSpace(parts[1])
		if token != "" {
			return token, nil
		}
	}

	return "", errors.New("GetAuthorization: invalid format")
}