From d8984df882e1d84449bf30c6a10532c79d02fbc5 Mon Sep 17 00:00:00 2001
From: Lennart Jablonka <hummsmith42@gmail.com>
Date: Tue, 6 Sep 2022 21:25:11 +0200
Subject: [PATCH] initial commit

---
 go.mod     |  5 ++++
 go.sum     |  6 +++++
 main.go    | 24 ++++++++++++++++++
 pay/pay.go | 71 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 4 files changed, 106 insertions(+)
 create mode 100644 go.mod
 create mode 100644 go.sum
 create mode 100644 main.go
 create mode 100644 pay/pay.go

diff --git a/go.mod b/go.mod
new file mode 100644
index 0000000..c423022
--- /dev/null
+++ b/go.mod
@@ -0,0 +1,5 @@
+module dev.ccchb.de/humm/z1
+
+go 1.19
+
+require git.sr.ht/~sircmpwn/getopt v1.0.0
diff --git a/go.sum b/go.sum
new file mode 100644
index 0000000..8e2792a
--- /dev/null
+++ b/go.sum
@@ -0,0 +1,6 @@
+git.sr.ht/~sircmpwn/getopt v1.0.0 h1:/pRHjO6/OCbBF4puqD98n6xtPEgE//oq5U8NXjP7ROc=
+git.sr.ht/~sircmpwn/getopt v1.0.0/go.mod h1:wMEGFFFNuPos7vHmWXfszqImLppbc0wEhh6JBfJIUgw=
+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
diff --git a/main.go b/main.go
new file mode 100644
index 0000000..fd82d14
--- /dev/null
+++ b/main.go
@@ -0,0 +1,24 @@
+package main
+
+import (
+	"fmt"
+	"os"
+
+	"dev.ccchb.de/humm/z1/pay"
+)
+
+var commands = map[string]func([]string){
+	"pay": pay.Main,
+}
+
+func usage() {
+	fmt.Fprintf(os.Stderr, "usage: %s pay [args ...]\n", os.Args[0])
+	os.Exit(1)
+}
+
+func main() {
+	if len(os.Args) < 2 {
+		usage()
+	}
+	commands[os.Args[1]](os.Args[1:])
+}
diff --git a/pay/pay.go b/pay/pay.go
new file mode 100644
index 0000000..e3ac685
--- /dev/null
+++ b/pay/pay.go
@@ -0,0 +1,71 @@
+package pay
+
+import (
+	"encoding/json"
+	"fmt"
+	"io"
+	"net/http"
+	"os"
+	"strconv"
+	"strings"
+
+	"git.sr.ht/~sircmpwn/getopt"
+)
+
+func usage() {
+	fmt.Fprintf(os.Stderr, "usage: %s pay [-h host] [-a user:password] user amount\n", os.Args[0])
+	os.Exit(1)
+}
+
+func Main(args []string) {
+	host := "https://usualsuspect:freundschaft@kasse.z1.ccchb.de"
+	// auth := "usualsuspect:freundschaft"
+
+	getopt.Usage = usage
+	opts, optind, err := getopt.Getopts(args, "h:a:")
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "%v\n", err)
+		os.Exit(1)
+	}
+	for _, opt := range opts {
+		switch opt.Option {
+		case 'h':
+			host = opt.Value
+		case 'a':
+			// auth = opt.Value
+		}
+	}
+
+	if len(args) != optind+2 {
+		usage()
+	}
+	args = args[optind:]
+	user := args[0]
+	amount, err := strconv.Atoi(args[1])
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "%s: amount: %v\n", os.Args[0], err)
+		os.Exit(1)
+	}
+
+	req := struct {
+		Amount int `json:"amount"`
+	}{amount}
+	json, err := json.Marshal(req)
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "%s: generating JSON: %v\n", os.Args[0], err)
+		os.Exit(1)
+	}
+	// BUG: user is not URI encoded
+	// BUG: user can’t be the name
+	resp, err := http.Post(host+"/api/user/"+user+"/transaction", "application/json", strings.NewReader(string(json)))
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "%s: HTTP: %v\n", os.Args[0], err)
+		os.Exit(1)
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode != 200 {
+		fmt.Fprintf(os.Stderr, "%s: unexpected status code: %d\n", os.Args[0], resp.StatusCode)
+		io.Copy(os.Stderr, resp.Body)
+	}
+}