// common contains common functionality for blasphem.
package common

import (
	"github.com/labstack/echo/v4"
	"github.com/spf13/cobra"
)

// this symbol overriden by linker args
var Version = "undefined"

const (
	// AppName is the name of the application.
	AppName = "blasphem"
)

type cmdOptions interface {
	Options(*cobra.Command, []string) error
	Execute() error
}

func AppNamePtr() *string {
	s := AppName
	return &s
}

func IntPtr(i int) *int { return &i }

// RunE is a convenience function for use with cobra.
func RunE(c cmdOptions) func(cmd *cobra.Command, args []string) error {
	return func(cmd *cobra.Command, args []string) error {
		err := c.Options(cmd, args)
		if err != nil {
			cmd.SilenceUsage = true
			return err
		}

		err = c.Execute()
		if err != nil {
			cmd.SilenceUsage = true
		}

		return err
	}
}

func NoCache(c echo.Context) echo.Context {
	c.Response().Header().Set("Cache-Control", "no-store")
	c.Response().Header().Set("Pragma", "no-cache")
	return c
}