util.go

package lightning

import (
	"net/http"
	"os"
	"strings"
)

// parsePattern splits a route pattern string into its individual parts.
func parsePattern(pattern string) []string {
	parts := strings.Split(pattern, "/")
	result := make([]string, 0)
	for _, part := range parts {
		if part != "" {
			result = append(result, part)
			if part[0] == '*' {
				break
			}
		}
	}

	return result
}

func resolveAddress(addr []string) string {
	if port := os.Getenv("PORT"); port != "" {
		logger.Debug("Environment variable PORT=\"%s\"", port)
		return ":" + port
	}

	switch len(addr) {
	case 0:
		logger.Debug("Using port :6789 by default")
		return ":6789"
	case 1:
		return addr[0]
	default:
		panic("too many parameters")
	}
}

// defaultNotFound is the default handler function for 404 Not Found error
func defaultNotFound(ctx *Context) {
	ctx.Text(http.StatusNotFound, http.StatusText(http.StatusNotFound))
}

// defaultInternalServerError is the default handler function for 500 Internal Server Error
func defaultInternalServerError(ctx *Context) {
	ctx.Text(http.StatusInternalServerError, http.StatusText(http.StatusInternalServerError))
}

// isValidHTTPMethod checks if a given HTTP method is valid.
func isValidHTTPMethod(method string) bool {
	switch method {
	case "GET", "POST", "PUT", "PATCH", "DELETE", "HEAD", "OPTIONS":
		return true
	}
	return false
}