Add plugin tasks (#651)

pkg/plugin/util/client.go

@@ -0,0 +1,39 @@
+// Package util implements utility and convenience methods for plugins. It is
+// not intended for the main stash code to access.
+package util
+
+import (
+	"net/http"
+	"net/http/cookiejar"
+	"net/url"
+	"strconv"
+
+	"github.com/shurcooL/graphql"
+
+	"github.com/stashapp/stash/pkg/plugin/common"
+)
+
+// NewClient creates a graphql Client connecting to the stash server using
+// the provided server connection details.
+// Always connects to the graphql endpoint of the localhost.
+func NewClient(provider common.StashServerConnection) *graphql.Client {
+	portStr := strconv.Itoa(provider.Port)
+
+	u, _ := url.Parse("http://localhost:" + portStr + "/graphql")
+	u.Scheme = provider.Scheme
+
+	cookieJar, _ := cookiejar.New(nil)
+
+	cookie := provider.SessionCookie
+	if cookie != nil {
+		cookieJar.SetCookies(u, []*http.Cookie{
+			cookie,
+		})
+	}
+
+	httpClient := &http.Client{
+		Jar: cookieJar,
+	}
+
+	return graphql.NewClient(u.String(), httpClient)
+}