package api

import (
	"net/http"

	"github.com/gin-gonic/gin"
	peer "github.com/libp2p/go-libp2p-core/peer"
)

// ping godoc
// @Summary Ping a network peer
// @Description Pings another peer on the network, returning online|offline.
// @Tags utils
// @Produce text/plain
// @Param X-Textile-Args header string true "peerid"
// @Success 200 {string} string "One of online|offline"
// @Failure 400 {string} string "Bad Request"
// @Failure 500 {string} string "Internal Server Error"
// @Router /ping [get]
func (a *Api) ping(g *gin.Context) {
	args, err := a.readArgs(g)
	if err != nil {
		a.abort500(g, err)
		return
	}

	if len(args) == 0 {
		g.String(http.StatusBadRequest, "missing peer id")
		return
	}

	pid, err := peer.IDB58Decode(args[0])
	if err != nil {
		g.String(http.StatusBadRequest, err.Error())
		return
	}

	status, err := a.Node.Ping(pid)
	if err != nil {
		a.abort500(g, err)
		return
	}

	g.String(http.StatusOK, string(status))
}