Split up Context (#873)

Reviewed-on: https://gitea.com/gitea/tea/pulls/873
Co-authored-by: techknowlogick <techknowlogick@gitea.com>
Co-committed-by: techknowlogick <techknowlogick@gitea.com>

modules/context/context_login.go

@@ -0,0 +1,49 @@
+// Copyright 2026 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package context
+
+import (
+	"os"
+	"strconv"
+	"time"
+
+	"code.gitea.io/tea/modules/config"
+)
+
+// GetLoginByEnvVar returns a login based on environment variables, or nil if no login can be created
+func GetLoginByEnvVar() *config.Login {
+	var token string
+
+	giteaToken := os.Getenv("GITEA_TOKEN")
+	githubToken := os.Getenv("GH_TOKEN")
+	giteaInstanceURL := os.Getenv("GITEA_INSTANCE_URL")
+	instanceInsecure := os.Getenv("GITEA_INSTANCE_INSECURE")
+	insecure := false
+	if len(instanceInsecure) > 0 {
+		insecure, _ = strconv.ParseBool(instanceInsecure)
+	}
+
+	// if no tokens are set, or no instance url for gitea fail fast
+	if len(giteaInstanceURL) == 0 || (len(giteaToken) == 0 && len(githubToken) == 0) {
+		return nil
+	}
+
+	token = giteaToken
+	if len(giteaToken) == 0 {
+		token = githubToken
+	}
+
+	return &config.Login{
+		Name:              "GITEA_LOGIN_VIA_ENV",
+		URL:               giteaInstanceURL,
+		Token:             token,
+		Insecure:          insecure,
+		SSHKey:            "",
+		SSHCertPrincipal:  "",
+		SSHKeyFingerprint: "",
+		SSHAgent:          false,
+		Created:           time.Now().Unix(),
+		VersionCheck:      false,
+	}
+}