From de8af13098054a776c89e2510e346c81bdbe1a52 Mon Sep 17 00:00:00 2001
From: bouncepaw <bouncepaw2@ya.ru>
Date: Sun, 25 Oct 2020 20:06:51 +0500
Subject: [PATCH] Implement CLI args

---
 README.md    | 17 +++++++++++++++--
 flag.go      | 36 ++++++++++++++++++++++++++++++++++++
 main.go      | 12 +++---------
 name.go      |  9 ++++++---
 util/util.go |  7 ++++++-
 5 files changed, 66 insertions(+), 15 deletions(-)
 create mode 100644 flag.go

diff --git a/README.md b/README.md
index 2f42622..e142d68 100644
--- a/README.md
+++ b/README.md
@@ -2,9 +2,9 @@
 A wiki engine.
 
 This is the development branch for version 0.10. Features planned for this version:
-* [ ] New file structure
+* [x] New file structure
 * [ ] Mycomarkup
-* [ ] CLI options
+* [x] CLI options
 * [ ] CSS improvements
 
 ## Building
@@ -17,6 +17,19 @@ make
 # * create an executable called `mycorrhiza`. Run it with path to your wiki.
 ```
 
+## Usage
+```
+mycorrhiza [OPTIONS...] WIKI_PATH
+
+Options:
+  -home string
+        The home page (default "home")
+  -port string
+        Port to serve the wiki at (default "1737")
+  -title string
+        How to call your wiki in the navititle (default "🍄")
+```
+
 ## Features
 * Edit pages through html forms
 * Responsive design
diff --git a/flag.go b/flag.go
new file mode 100644
index 0000000..d5d6df4
--- /dev/null
+++ b/flag.go
@@ -0,0 +1,36 @@
+package main
+
+import (
+	"flag"
+	"log"
+	"path/filepath"
+
+	"github.com/bouncepaw/mycorrhiza/util"
+)
+
+func init() {
+	flag.StringVar(&util.ServerPort, "port", "1737", "Port to serve the wiki at")
+	flag.StringVar(&util.HomePage, "home", "home", "The home page")
+	flag.StringVar(&util.SiteTitle, "title", "🍄", "How to call your wiki in the navititle")
+}
+
+// Do the things related to cli args and die maybe
+func parseCliArgs() {
+	flag.Parse()
+
+	args := flag.Args()
+	if len(args) == 0 {
+		log.Fatal("Error: pass a wiki directory")
+	}
+
+	var err error
+	WikiDir, err = filepath.Abs(args[0])
+	util.WikiDir = WikiDir
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	if !isCanonicalName(util.HomePage) {
+		log.Fatal("Error: you must use a proper name for the homepage")
+	}
+}
diff --git a/main.go b/main.go
index abb11f8..140a926 100644
--- a/main.go
+++ b/main.go
@@ -101,13 +101,7 @@ func handlerRecentChanges(w http.ResponseWriter, rq *http.Request) {
 
 func main() {
 	log.Println("Running MycorrhizaWiki β")
-
-	var err error
-	WikiDir, err = filepath.Abs(os.Args[1])
-	util.WikiDir = WikiDir
-	if err != nil {
-		log.Fatal(err)
-	}
+	parseCliArgs()
 	if err := os.Chdir(WikiDir); err != nil {
 		log.Fatal(err)
 	}
@@ -129,7 +123,7 @@ func main() {
 		http.ServeFile(w, rq, WikiDir+"/static/favicon.ico")
 	})
 	http.HandleFunc("/", func(w http.ResponseWriter, rq *http.Request) {
-		http.Redirect(w, rq, "/page/home", http.StatusSeeOther)
+		http.Redirect(w, rq, "/page/"+util.HomePage, http.StatusSeeOther)
 	})
-	log.Fatal(http.ListenAndServe("0.0.0.0:1737", nil))
+	log.Fatal(http.ListenAndServe("0.0.0.0:"+util.ServerPort, nil))
 }
diff --git a/name.go b/name.go
index 741e965..1ceb0ba 100644
--- a/name.go
+++ b/name.go
@@ -4,6 +4,8 @@ import (
 	"fmt"
 	"net/http"
 	"strings"
+
+	"github.com/bouncepaw/mycorrhiza/util"
 )
 
 // isCanonicalName checks if the `name` is canonical.
@@ -17,16 +19,17 @@ func CanonicalName(name string) string {
 }
 
 // naviTitle turns `canonicalName` into html string with each hypha path parts higlighted as links.
+// TODO: rework as a template
 func naviTitle(canonicalName string) string {
 	var (
-		html = `<h1 class="navi-title" id="0">
-	<a href="/">🍄</a>`
+		html = fmt.Sprintf(`<h1 class="navi-title" id="navi-title">
+	<a href="/page/%s">%s</a>`, util.HomePage, util.SiteTitle)
 		prevAcc = `/page/`
 		parts   = strings.Split(canonicalName, "/")
 	)
 	for _, part := range parts {
 		html += fmt.Sprintf(`
-	<span>/</span>
+	<span aria-hidden="true">/</span>
 	<a href="%s">%s</a>`,
 			prevAcc+part,
 			strings.Title(part))
diff --git a/util/util.go b/util/util.go
index 2e556d0..8458d4f 100644
--- a/util/util.go
+++ b/util/util.go
@@ -5,7 +5,12 @@ import (
 	"strings"
 )
 
-var WikiDir string
+var (
+	ServerPort string
+	HomePage   string
+	SiteTitle  string
+	WikiDir    string
+)
 
 // ShorterPath is used by handlerList to display shorter path to the files. It simply strips WikiDir.
 func ShorterPath(path string) string {