package middleware

import (
	"sync"

	m "github.com/grafana/grafana/pkg/models"
	"github.com/grafana/grafana/pkg/util"
)

var renderKeysLock sync.Mutex
var renderKeys map[string]*m.SignedInUser = make(map[string]*m.SignedInUser)

func initContextWithRenderAuth(ctx *Context) bool {
	key := ctx.GetCookie("renderKey")
	if key == "" {
		return false
	}

	renderKeysLock.Lock()
	defer renderKeysLock.Unlock()

	if renderUser, exists := renderKeys[key]; !exists {
		ctx.JsonApiErr(401, "Invalid Render Key", nil)
		return true
	} else {

		ctx.IsSignedIn = true
		ctx.SignedInUser = renderUser
		ctx.IsRenderCall = true
		return true
	}
}

type renderContextFunc func(key string) (string, error)

func AddRenderAuthKey(orgId int64) string {
	renderKeysLock.Lock()

	key := util.GetRandomString(32)

	renderKeys[key] = &m.SignedInUser{
		OrgId:   orgId,
		OrgRole: m.ROLE_VIEWER,
	}

	renderKeysLock.Unlock()

	return key
}

func RemoveRenderAuthKey(key string) {
	renderKeysLock.Lock()
	delete(renderKeys, key)
	renderKeysLock.Unlock()
}