From 3437df8676d9697fca587b9ab0d2f6395637cb4f Mon Sep 17 00:00:00 2001
From: Arsen Musayelyan <moussaelianarsen@gmail.com>
Date: Tue, 22 Nov 2022 12:51:45 -0800
Subject: [PATCH] Add a way to check the minimum version supported by a LURE
 repo

---
 .gitignore             |  3 ++-
 .goreleaser.yaml       |  1 +
 Makefile               |  5 ++++-
 repo.go                | 43 ++++++++++++++++++++++++++++++++++++++++++
 scripts/gen-version.sh |  3 +++
 version.go             |  6 ++++++
 6 files changed, 59 insertions(+), 2 deletions(-)
 create mode 100755 scripts/gen-version.sh

diff --git a/.gitignore b/.gitignore
index 49b3f25..50684a1 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,3 @@
 /lure
-/dist/
\ No newline at end of file
+/dist/
+/version.txt
\ No newline at end of file
diff --git a/.goreleaser.yaml b/.goreleaser.yaml
index c30390e..f4268f7 100644
--- a/.goreleaser.yaml
+++ b/.goreleaser.yaml
@@ -1,6 +1,7 @@
 before:
   hooks:
     - go mod tidy
+    - go generate
 builds:
   - id: lure
     env:
diff --git a/Makefile b/Makefile
index 3f9ca10..88b099b 100644
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,4 @@
-lure:
+lure: version.txt
 	go build
 
 clean:
@@ -9,5 +9,8 @@ install: lure
 
 uninstall:
 	rm -f /usr/local/bin/lure
+	
+version.txt:
+	go generate
 
 .PHONY: install clean uninstall
\ No newline at end of file
diff --git a/repo.go b/repo.go
index 6aa8892..0c7a412 100644
--- a/repo.go
+++ b/repo.go
@@ -41,6 +41,12 @@ func (p PkgNotFoundError) Error() string {
 	return "package '" + p.pkgName + "' could not be found in any repository"
 }
 
+type RepoConfig struct {
+	Repo struct {
+		MinVersion string `toml:"minVersion"`
+	}
+}
+
 func addrepoCmd(c *cli.Context) error {
 	name := c.String("name")
 	repoURL := c.String("url")
@@ -223,6 +229,26 @@ func pullRepos(ctx context.Context) error {
 			} else if err != nil {
 				return err
 			}
+
+			fl, err := w.Filesystem.Open("lure-repo.toml")
+			if err != nil {
+				log.Warn("Git repository does not appear to be a valid LURE repo").Str("repo", repo.Name).Send()
+				continue
+			}
+
+			var repoCfg RepoConfig
+			err = toml.NewDecoder(fl).Decode(&repoCfg)
+			if err != nil {
+				return err
+			}
+			fl.Close()
+
+			currentVer, _, _ := strings.Cut(version, "-")
+			if vercmp(currentVer, repoCfg.Repo.MinVersion) == -1 {
+				log.Warn("LURE repo's minumum LURE version is greater than the current version. Try updating LURE if something doesn't work.").Str("repo", repo.Name).Send()
+			}
+
+			continue
 		}
 
 		err = os.RemoveAll(repoDir)
@@ -246,6 +272,23 @@ func pullRepos(ctx context.Context) error {
 		if err != nil {
 			return err
 		}
+
+		fl, err := os.Open(filepath.Join(repoDir, "lure-repo.toml"))
+		if err != nil {
+			log.Warn("Git repository does not appear to be a valid LURE repo").Str("repo", repo.Name).Send()
+		}
+
+		var repoCfg RepoConfig
+		err = toml.NewDecoder(fl).Decode(&repoCfg)
+		if err != nil {
+			return err
+		}
+		fl.Close()
+
+		currentVer, _, _ := strings.Cut(version, "-")
+		if vercmp(currentVer, repoCfg.Repo.MinVersion) == -1 {
+			log.Warn("LURE repo's minumum LURE version is greater than the current version. Try updating LURE if something doesn't work.").Str("repo", repo.Name).Send()
+		}
 	}
 
 	return nil
diff --git a/scripts/gen-version.sh b/scripts/gen-version.sh
new file mode 100755
index 0000000..9eb213e
--- /dev/null
+++ b/scripts/gen-version.sh
@@ -0,0 +1,3 @@
+#!/bin/bash
+
+git describe --tags > version.txt
\ No newline at end of file
diff --git a/version.go b/version.go
index d1e4cd7..9997d58 100644
--- a/version.go
+++ b/version.go
@@ -19,12 +19,18 @@
 package main
 
 import (
+	_ "embed"
 	"strconv"
 	"strings"
 
 	"golang.org/x/exp/slices"
 )
 
+//go:generate scripts/gen-version.sh
+
+//go:embed version.txt
+var version string
+
 // vercmp compares two version strings.
 // It returns 1 if v1 is greater,
 // 0 if the versions are equal,