From 4297088e875997dac104aa75422ebaca8c9aa03b Mon Sep 17 00:00:00 2001
From: Tony Worm <tony@topcialsource.com>
Date: Tue, 4 Jun 2024 16:57:17 -0400
Subject: [PATCH] cli/mod: add warning about migrating to official
 implementation

---
 .hof/shadow/cli/cmd/hof/cmd/mod.go | 20 +++++++++++++++
 README.md                          |  2 +-
 cmd/hof/cmd/mod.go                 | 41 ++++++++++++++++++++++++++++++
 design/cmds/mod.cue                |  1 +
 4 files changed, 63 insertions(+), 1 deletion(-)

diff --git a/.hof/shadow/cli/cmd/hof/cmd/mod.go b/.hof/shadow/cli/cmd/hof/cmd/mod.go
index dd8eba50e..110506120 100644
--- a/.hof/shadow/cli/cmd/hof/cmd/mod.go
+++ b/.hof/shadow/cli/cmd/hof/cmd/mod.go
@@ -1,6 +1,9 @@
 package cmd
 
 import (
+	"fmt"
+	"os"
+
 	"github.com/spf13/cobra"
 
 	"github.com/hofstadter-io/hof/cmd/hof/cmd/mod"
@@ -98,6 +101,11 @@ hof mod help
 
 `
 
+func ModPersistentPreRun(args []string) (err error) {
+
+	return err
+}
+
 var ModCmd = &cobra.Command{
 
 	Use: "mod",
@@ -109,6 +117,18 @@ var ModCmd = &cobra.Command{
 	Short: "CUE module dependency management",
 
 	Long: modLong,
+
+	PersistentPreRun: func(cmd *cobra.Command, args []string) {
+		var err error
+
+		// Argument Parsing
+
+		err = ModPersistentPreRun(args)
+		if err != nil {
+			fmt.Println(err)
+			os.Exit(1)
+		}
+	},
 }
 
 func init() {
diff --git a/README.md b/README.md
index 48ec4cd98..749192de2 100644
--- a/README.md
+++ b/README.md
@@ -43,8 +43,8 @@ The [the-walkthrough](https://docs.hofstadter.io/the-walkthrough/) section shows
 
 Join us or ask questions on
 
+- Discord (preferred): https://discord.com/invite/BXwX7n6B8w
 - Slack: [https://hofstadter-io.slack.com](https://join.slack.com/t/hofstadter-io/shared_invite/zt-e5f90lmq-u695eJur0zE~AG~njNlT1A)
-- Discord: https://discord.com/invite/BXwX7n6B8w
 
 We also use GitHub issues and discussions. Use which every is easiest for you!
 
diff --git a/cmd/hof/cmd/mod.go b/cmd/hof/cmd/mod.go
index dd8eba50e..0f56624a8 100644
--- a/cmd/hof/cmd/mod.go
+++ b/cmd/hof/cmd/mod.go
@@ -1,6 +1,10 @@
 package cmd
 
 import (
+	"fmt"
+	"os"
+	"strconv"
+
 	"github.com/spf13/cobra"
 
 	"github.com/hofstadter-io/hof/cmd/hof/cmd/mod"
@@ -98,6 +102,31 @@ hof mod help
 
 `
 
+const modWarning = `
+WARNING: hof will be migrating to CUE modules in 0.7.x
+We are doing this to work with the broader ecosystem.
+Git based repos will need migration to continue working.
+
+Set HOF_DISABLE_MOD_WARNING=true to hide this message.
+`
+
+func ModPersistentPreRun(args []string) (err error) {
+	disable := os.Getenv("HOF_DISABLE_MOD_WARNING")
+	if disable == "" {
+		disable = "false"
+	}
+	disabled, err := strconv.ParseBool(disable)
+	if err != nil {
+		fmt.Fprintln(os.Stderr, err)
+	}
+
+	if !disabled {
+		fmt.Fprintln(os.Stderr, modWarning)
+	}
+
+	return nil
+}
+
 var ModCmd = &cobra.Command{
 
 	Use: "mod",
@@ -109,6 +138,18 @@ var ModCmd = &cobra.Command{
 	Short: "CUE module dependency management",
 
 	Long: modLong,
+
+	PersistentPreRun: func(cmd *cobra.Command, args []string) {
+		var err error
+
+		// Argument Parsing
+
+		err = ModPersistentPreRun(args)
+		if err != nil {
+			fmt.Println(err)
+			os.Exit(1)
+		}
+	},
 }
 
 func init() {
diff --git a/design/cmds/mod.cue b/design/cmds/mod.cue
index 7164fbbff..28206d8a9 100644
--- a/design/cmds/mod.cue
+++ b/design/cmds/mod.cue
@@ -20,6 +20,7 @@ ModCommand: schema.Command & {
 	//Topics: #ModTopics
 	//Examples: #ModExamples
 
+	PersistentPrerun:  true
 	OmitRun: true
 
 	#body: {