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_require.go

@@ -0,0 +1,44 @@
+// Copyright 2026 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package context
+
+import (
+	"fmt"
+	"os"
+)
+
+// Ensure checks if requirements on the context are set, and terminates otherwise.
+func (ctx *TeaContext) Ensure(req CtxRequirement) {
+	if req.LocalRepo && ctx.LocalRepo == nil {
+		fmt.Println("Local repository required: Execute from a repo dir, or specify a path with --repo.")
+		os.Exit(1)
+	}
+
+	if req.RemoteRepo && len(ctx.RepoSlug) == 0 {
+		fmt.Println("Remote repository required: Specify ID via --repo or execute from a local git repo.")
+		os.Exit(1)
+	}
+
+	if req.Org && len(ctx.Org) == 0 {
+		fmt.Println("Organization required: Specify organization via --org.")
+		os.Exit(1)
+	}
+
+	if req.Global && !ctx.IsGlobal {
+		fmt.Println("Global scope required: Specify --global.")
+		os.Exit(1)
+	}
+}
+
+// CtxRequirement specifies context needed for operation
+type CtxRequirement struct {
+	// ensures a local git repo is available & ctx.LocalRepo is set. Implies .RemoteRepo
+	LocalRepo bool
+	// ensures ctx.RepoSlug, .Owner, .Repo are set
+	RemoteRepo bool
+	// ensures ctx.Org is set
+	Org bool
+	// ensures ctx.IsGlobal is true
+	Global bool
+}