From 145d10213fa05bd345f393c4d497c3e9a1549aac Mon Sep 17 00:00:00 2001
From: Kenichi Kamiya <kachick1@gmail.com>
Date: Fri, 28 Jul 2023 12:33:20 +0900
Subject: [PATCH] Rewrite symlink generator with go

---
 .gitignore                 |  1 +
 Makefile.toml              |  7 +++++-
 README.md                  |  2 +-
 cmd/mksym/main.go          | 48 ++++++++++++++++++++++++++++++++++++++
 scripts/make_symlink.bash  |  6 -----
 scripts/make_symlinks.bash | 16 -------------
 6 files changed, 56 insertions(+), 24 deletions(-)
 create mode 100644 cmd/mksym/main.go
 delete mode 100755 scripts/make_symlink.bash
 delete mode 100755 scripts/make_symlinks.bash

diff --git a/.gitignore b/.gitignore
index 7293ae15..2d07165d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -8,3 +8,4 @@
 .config/fish/config.fish
 
 dist/
+tmp/
diff --git a/Makefile.toml b/Makefile.toml
index 7b77d7df..9beeeee6 100644
--- a/Makefile.toml
+++ b/Makefile.toml
@@ -35,13 +35,18 @@ args = [
   './cmd/print-deps',
 ]
 
+[tasks.prepare-build]
+command = 'mkdir'
+args = ['-p', 'dist']
+
 [tasks.test-race]
+dependencies = ['prepare-build']
 command = 'go'
 args = [
   'build',
   '-v',
   '-race',
   '-o',
-  'dist/print-deps',
+  'dist',
   './...',
 ]
diff --git a/README.md b/README.md
index 928cb1e9..47390e21 100644
--- a/README.md
+++ b/README.md
@@ -24,7 +24,7 @@ If you backed to 🚼 from some reasons, See [Wiki](https://github.com/kachick/d
 1. Install [nix-community/home-manager](https://github.com/nix-community/home-manager)
 1. Set `XDG_*` into current env. `. ./home/.bashrc`
 1. Make sure `$XDG_CONFIG_HOME/home-manager/home.nix` does not exists. If not, check the content and remove
-1. `./scripts/make_symlinks.bash`
+1. Run `go run ./cmd/mksym --linker path-from --linked path-to` if needed
 1. `home-manager switch`
 1. (optional) Install [jdxcode/rtx](https://github.com/jdxcode/rtx) to manage subdivided versions
 
diff --git a/cmd/mksym/main.go b/cmd/mksym/main.go
new file mode 100644
index 00000000..754542bf
--- /dev/null
+++ b/cmd/mksym/main.go
@@ -0,0 +1,48 @@
+package main
+
+import (
+	"flag"
+	"log"
+	"os"
+	"path/filepath"
+)
+
+func main() {
+	linkerFlag := flag.String("linker", "", "path - from")
+	linkedFlag := flag.String("linked", "", "path - to")
+
+	flag.Parse()
+
+	linker := *linkerFlag
+	linked := *linkedFlag
+
+	if linker == "" || linked == "" {
+		flag.Usage()
+		log.Fatalln("empty path is given")
+	}
+
+	linked, err := filepath.Abs(linked)
+	if err != nil {
+		log.Fatalln(err)
+	}
+
+	_, err = os.Stat(linked)
+	if err != nil {
+		log.Fatalf("target does not exist, fix `linked` option - %v\n", err)
+	}
+	_, err = os.Stat(linker)
+	if err == nil || !os.IsNotExist(err) {
+		log.Fatalf("this script does not override existing symlinker files, fix `linker` option or manually remove the file - %v\n", err)
+	}
+
+	parent := filepath.Dir(linker)
+	err = os.MkdirAll(parent, 0755)
+	if err != nil {
+		log.Fatalln(err)
+	}
+
+	err = os.Symlink(linked, linker)
+	if err != nil {
+		log.Fatalln(err)
+	}
+}
diff --git a/scripts/make_symlink.bash b/scripts/make_symlink.bash
deleted file mode 100755
index 9b2d15a8..00000000
--- a/scripts/make_symlink.bash
+++ /dev/null
@@ -1,6 +0,0 @@
-#!/usr/bin/env bash
-
-set -euxo pipefail
-
-# https://linuxjm.osdn.jp/info/GNU_coreutils/coreutils-ja_86.html
-ln --symbolic --verbose --backup --relative --no-dereference --target-directory="$1" "$2"
diff --git a/scripts/make_symlinks.bash b/scripts/make_symlinks.bash
deleted file mode 100755
index aaa36a42..00000000
--- a/scripts/make_symlinks.bash
+++ /dev/null
@@ -1,16 +0,0 @@
-#!/usr/bin/env bash
-
-set -euxo pipefail
-
-# https://stackoverflow.com/a/24112741/1212807
-parent_path=$(
-  cd "$(dirname "${BASH_SOURCE[0]}")"
-  pwd -P
-)
-
-fd --hidden --type file --max-depth 1 '.' ./home | xargs -I{} "$parent_path/make_symlink.bash" "$HOME" '{}'
-# TODO: Update in #142
-mkdir -p "$HOME/.stack"
-"$parent_path/make_symlink.bash" "$HOME/.stack" './home/.stack/config.yaml'
-
-fd --hidden --max-depth 1 '.' ./.config | xargs -I{} "$parent_path/make_symlink.bash" "$XDG_CONFIG_HOME" '{}'