Fix typo, add screenshots

.gitignore

@@ -1,2 +1,3 @@
 .env
 test.txt
+ledger-quicknote

README.md

@@ -0,0 +1,94 @@
+# Ledger Quick Note
+
+![screenshot](screenshots/home.png)
+
+**Add ledger transactions on the fly!**
+
+## Feature
+
+### Create Transaction from Template
+
+Add your transaction template in `tx/` (in Go's template syntax), and create transaction from them in the browser. 
+
+Examples:
+
+Take some cash
+```
+{{ .Date }} * cash
+    expenses:cash    ${{ .Amount }}
+    assets:cash
+
+```
+
+Cash expenses
+```
+{{ .Date }} {{ with .Name }}{{ . }}{{ else }}{{ .Account }}{{ end }}
+    {{ .Account }}      ${{ .Amount }}
+    expenses:cash
+    
+```
+
+Checkout `tx/` folder for more examples.
+
+![new action](screenshots/action.png)
+
+Adjust your transaction
+
+![confirm](screenshots/confirm.png)
+
+Result page
+
+![result](screenshots/success.png)
+
+### Ledger Scripts
+
+Run some commonly used ledger commands.
+
+Define your commands in config.go
+
+```go
+var SCRIPTS = map[string][]string{
+	"balance assets":     {"b", "assets", "-X", "$"},
+	"register":           {"r", "--tail", "10"},
+	"balance this month": {"b", "-b", "this month"},
+}
+```
+
+Rebuild binary everytime you make a change to `config.go`
+
+Execute them and see the result in the browser.
+
+![execute result](screenshots/exec.png)
+
+## Install
+
+Requirements:
+* go
+* ledger (Only required when you use scripts)
+ 
+Install requirements on Debian / Ubuntu based distro:
+```
+sudo apt install golang ledger
+```
+
+Install requirements on Arch based distro:
+```
+sudo pacman -S golang ledger
+```
+
+Clone the repo
+
+```
+git clone https://github.com/lancatlin/ledger-quicknote.git
+```
+
+```
+go build
+```
+
+```
+./ledger-quicknote
+```
+
+Checkout `deployment/` for Nginx & Systemd example configuration.
+

config.go

@@ -0,0 +1,7 @@
+package main
+
+var SCRIPTS = map[string][]string{
+	"balance assets":     {"b", "assets", "-X", "$"},
+	"register":           {"r", "--tail", "10"},
+	"balance this month": {"b", "-b", "this month"},
+}

deployment/nginx.conf

@@ -0,0 +1,12 @@
+server {
+        listen 80;
+        listen [::]:80;
+        server_name ledger.example.com;
+
+        location / {
+                auth_basic "private zone";
+                auth_basic_user_file /etc/nginx/myusers;
+
+                proxy_pass http://127.0.0.1:8000;
+        }
+}

deployment/systemd.service

@@ -0,0 +1,12 @@
+[Unit]
+Description=Ledger Quick Note
+
+[Service]
+Type=simple
+User=www-data
+Group=www-data
+WorkingDirectory=/path/to/ledger-quicknote
+ExecStart=/path/to/ledger-quicknote/ledger-quicknote -f /path/to/ledger/journal.txt -w /path/to/ledger
+
+[Install]
+WantedBy=multi-user.target

go.mod

@@ -0,0 +1,3 @@
+module github.com/lancatlin/ledger-quicknote
+
+go 1.19

main.go

@@ -1,71 +1,139 @@
 package main
 
 import (
+	"bytes"
+	"flag"
 	"fmt"
 	"io"
 	"log"
 	"net/http"
 	"net/url"
 	"os"
+	"os/exec"
+	"strings"
 	"text/template"
 	"time"
 )
 
-var tpl *template.Template
+var ledgerTpl *template.Template
+var htmlTpl *template.Template
 
-const LEDGER_FILE = "test.txt"
+var LEDGER_FILE string
+var LEDGER_INIT string
+var WORKING_DIR string
+var HOST string
 
 type TxData struct {
+	Name    string
 	Date    string
 	Amount  string
+	Account string
 }
 
 func init() {
-	var err error
-	tpl, err = template.ParseGlob("templates/*")
-	if err != nil {
-		panic(err)
-	}
-	log.Println(tpl.DefinedTemplates())
+	ledgerTpl = template.Must(template.ParseGlob("tx/*"))
+	htmlTpl = template.Must(template.ParseGlob("templates/*.html"))
+	flag.StringVar(&LEDGER_FILE, "f", "example.txt", "ledger journal file to write")
+	flag.StringVar(&LEDGER_INIT, "i", "", "ledger initiation file")
+	flag.StringVar(&WORKING_DIR, "w", "", "ledger working directory")
+	flag.StringVar(&HOST, "b", "127.0.0.1:8000", "binding address")
+	flag.Parse()
 }
 
 func main() {
-	fmt.Println("Hi")
-
 	http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
-		tpl.ExecuteTemplate(w, "index.html", tpl)
+		htmlTpl.ExecuteTemplate(w, "index.html", struct {
+			Templates []*template.Template
+			Scripts   map[string][]string
+		}{
+			ledgerTpl.Templates(),
+			SCRIPTS,
+		})
 	})
 
-	http.HandleFunc("/action", func(w http.ResponseWriter, r *http.Request) {
+	http.HandleFunc("/new", func(w http.ResponseWriter, r *http.Request) {
 		if err := r.ParseForm(); err != nil {
-			panic(err)
+			http.Error(w, err.Error(), 400)
+			return
 		}
-		fmt.Println(r.Form)
-		err := renderTx(w, r.Form)
+		tx, err := newTx(r.Form)
 		if err != nil {
-			panic(err)
+			http.Error(w, err.Error(), 400)
+			log.Println(err, r.Form)
+			return
+		}
+		if err := htmlTpl.ExecuteTemplate(w, "new.html", struct {
+			Tx string
+		}{tx}); err != nil {
+			http.Error(w, err.Error(), 500)
 		}
 	})
 
-	log.Fatal(http.ListenAndServe(":8000", nil))
+	http.HandleFunc("/submit", func(w http.ResponseWriter, r *http.Request) {
+		if err := r.ParseForm(); err != nil {
+			http.Error(w, err.Error(), 400)
+			return
+		}
+
+		tx := r.FormValue("tx")
+		if err := appendToFile(tx); err != nil {
+			http.Error(w, err.Error(), 500)
+			return
+		}
+
+		if err := htmlTpl.ExecuteTemplate(w, "success.html", struct {
+			Tx string
+		}{tx}); err != nil {
+			http.Error(w, err.Error(), 500)
+		}
+	})
+
+	http.HandleFunc("/exec", func(w http.ResponseWriter, r *http.Request) {
+		name := r.FormValue("name")
+		if err := executeScript(w, name); err != nil {
+			http.Error(w, err.Error(), 500)
+			log.Println(err)
+			return
+		}
+	})
+
+	log.Printf("Listen on %s", HOST)
+	log.Fatal(http.ListenAndServe(HOST, nil))
 }
 
-func renderTx(w io.Writer, params url.Values) (err error) {
-	name := params.Get("action")
+func newTx(params url.Values) (result string, err error) {
+	action := params.Get("action")
 	data := TxData{
 		Date:    time.Now().Format("2006/01/02"),
 		Amount:  params.Get("amount"),
+		Account: params.Get("account"),
+		Name:    params.Get("name"),
 	}
+	var buf bytes.Buffer
+	err = ledgerTpl.ExecuteTemplate(&buf, action, data)
+	return buf.String(), nil
+}
+
+func appendToFile(tx string) (err error) {
 	f, err := os.OpenFile(LEDGER_FILE, os.O_WRONLY|os.O_CREATE|os.O_APPEND, 0644)
 	if err != nil {
-		panic(err)
+		return err
 	}
 	defer f.Close()
-	if err = tpl.ExecuteTemplate(f, name, data); err != nil {
+
+	buf := strings.NewReader(strings.ReplaceAll(tx, "\r", "")) // Remove CR generated from browser
+	_, err = io.Copy(f, buf)
 	return err
-	}
-	if err = tpl.ExecuteTemplate(w, name, data); err != nil {
-		return err
-	}
-	return nil
+}
+
+func executeScript(w io.Writer, name string) (err error) {
+	script, ok := SCRIPTS[name]
+	if !ok {
+		return fmt.Errorf("%s script not found", name)
+	}
+	cmd := exec.Command("ledger", append([]string{"--init-file", LEDGER_INIT, "--file", LEDGER_FILE}, script...)...)
+	cmd.Dir = WORKING_DIR
+	cmd.Stdout = w
+	cmd.Stderr = w
+	return cmd.Run()
 }

templates/index.html

@@ -2,19 +2,26 @@
 <html>
     <head>
         <title>Ledger Quick Note</title>
+        <meta name="viewport" content="width=device-width, initial-scale=1.0">
     </head>
     <body>
         <h1>Ledger Quick Note</h1>
-        <form action="/action" method="POST">
-            <label>Action: <select name="action">
+        <form action="/new" method="POST">
+            <label>Action: 
                 {{ range .Templates }}
-                {{ if ne .Name "index.html" }}
-                <option value="{{ .Name }}">{{ .Name }}</option>
+                <input type="radio" name="action" value="{{ .Name }}">{{ .Name }}</option>
                 {{ end }}
-                {{ end }}
-                </select></label>
-            <label>Amount: <input name="amount" type="number"></label>
+                </label><br>
+            <label>Amount: <input name="amount" type="number"></label><br>
+            <label>Account: <input name="account" type="text"></label></br>
+            <label>Tx Name: <input name="name" type="text"></label></br>
             <input type="submit">
         </form>
+        <h2>Scripts</h2>
+        <ul>
+            {{ range $k, $v := .Scripts }}
+            <li><a href="/exec?name={{ $k }}">{{ $k }}</a></li>
+            {{ end }}
+        </ul>
     </body>
 </html>

templates/new.html

@@ -0,0 +1,14 @@
+<!DOCTYPE html>
+<html>
+    <head>
+        <title>Ledger Quick Note</title>
+        <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    </head>
+    <body>
+        <h1>Confirm new Tx</h1>
+        <form action="/submit" method="POST">
+            <textarea name="tx" rows="15" cols="40">{{ .Tx }}</textarea><br>
+            <input type="submit">
+        </form>
+    </body>
+</html>

templates/success.html

@@ -0,0 +1,13 @@
+<!DOCTYPE html>
+<html>
+    <head>
+        <title>Ledger Quick Note</title>
+        <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    </head>
+    <body>
+        <h1>Ledger Quick Note</h1>
+        <p><strong>Success</strong></p>
+        <pre><code>{{ .Tx }}</code></pre>
+        <p><a href="/">Back to home</a></p>
+    </body>
+</html>

tx/expense.txt

@@ -0,0 +1,4 @@
+{{ .Date }} {{ with .Name }}{{ . }}{{ else }}{{ .Account }}{{ end }}
+    {{ .Account }}      ${{ .Amount }}
+    cash
+