From 7463d5f56f9d9184135509b34048715421183f94 Mon Sep 17 00:00:00 2001
From: Stefan Dillenburg <stefan.dillenburg@outlook.com>
Date: Thu, 8 Sep 2022 10:54:06 +0200
Subject: [PATCH] feat: search repos in a nested project structure

---
 README.md                 | 14 +++++++++----
 infra/filesystem_repos.go | 41 +++++++++++++++++++++++++++++++++++----
 2 files changed, 47 insertions(+), 8 deletions(-)

diff --git a/README.md b/README.md
index 15d6811..e94be9e 100644
--- a/README.md
+++ b/README.md
@@ -30,21 +30,27 @@ Download build binary from the [releases](https://github.com/suin/git-remind/rel
 
 ## Configuration
 
-Add `remind.paths` to your `.gitconfig`, using your own absolute path to the repository directories. 
+Add `remind.paths` to your `.gitconfig`, using your own absolute path to the repository directories.
 
 ```text:.gitconfig
 [remind]
 	paths = /Users/you/projects/foo,/Users/you/projects/bar
 ```
 
-If you have some git repositories (e.g. `~/projects/foo` and `~/projects/bar`) in the same directory (e.g. in `~/projects`) , you may specify the path using wildcard (e.g.`/Users/you/projects/*`):
-
+If you have some git repositories (e.g. `~/projects/foo` and `~/projects/bar`) in the same directory (e.g. in `~/projects`) , you may specify the path using wildcard (e.g. `/Users/you/projects/*`):
 
 ```text:.gitconfig
 [remind]
 	paths = /Users/you/projects/*
 ```
 
+If you have a nested git repository structure (e.g. `~/projects/foobar/foo`, `~/projects/foobar/bar` and `~/projects/foo`), you may specify the path using a double asterisk (e.g. `/Users/you/projects/**`):
+
+```text:.gitconfig
+[remind]
+    paths = /Users/you/projects/**
+```
+
 You can also utilise the `git config` command to configure git-remind to avoid the manually editing of the `.gitconfig`.
 
 ```bash
@@ -76,7 +82,7 @@ C  /Users/suin/projects/myapp1
 CP /Users/suin/projects/myapp2
 ```
 
-#### Show all status including up-to-date repositories 
+#### Show all status including up-to-date repositories
 
 ```
 $ git-remind status -a
diff --git a/infra/filesystem_repos.go b/infra/filesystem_repos.go
index e14915e..69a7031 100644
--- a/infra/filesystem_repos.go
+++ b/infra/filesystem_repos.go
@@ -1,9 +1,12 @@
 package infra
 
 import (
-	"github.com/suin/git-remind/domain"
+	"io/fs"
 	"os"
 	"path/filepath"
+	"strings"
+
+	"github.com/suin/git-remind/domain"
 )
 
 var FilesystemRepos domain.GetReposByPathPattern = func(patterns domain.GetPathPatterns) (repos []string, err error) {
@@ -12,9 +15,17 @@ var FilesystemRepos domain.GetReposByPathPattern = func(patterns domain.GetPathP
 		return
 	}
 	for _, pathPattern := range pathPatterns {
-		paths, err2 := filepath.Glob(string(pathPattern))
-		if err2 != nil {
-			return repos, err2
+		if strings.HasSuffix(string(pathPattern), "/**") {
+			path := strings.TrimSuffix(string(pathPattern), "/**")
+			dirs, err := searchForGitDirs(path)
+			if err != nil {
+				return repos, err
+			}
+			repos = append(repos, dirs...)
+		}
+		paths, err := filepath.Glob(string(pathPattern))
+		if err != nil {
+			return repos, err
 		}
 		for _, path := range paths {
 			isDir, _ := isDirectory(path + "/.git")
@@ -33,3 +44,25 @@ func isDirectory(path string) (bool, error) {
 	}
 	return fileInfo.IsDir(), err
 }
+
+func searchForGitDirs(root string) ([]string, error) {
+	var skipPath string
+	var matchedPaths []string
+	err := filepath.WalkDir(
+		root,
+		func(path string, d fs.DirEntry, err error) error {
+			if err != nil {
+				return err
+			}
+			if d.IsDir() && d.Name() == ".git" && skipPath != path {
+				skipPath = path
+				matchedPaths = append(matchedPaths, strings.TrimSuffix(path, "/.git"))
+			}
+			return nil
+		},
+	)
+	if err != nil {
+		return nil, err
+	}
+	return matchedPaths, nil
+}