From b1ff57ba58a2ec59198d61f25d9347e62f694021 Mon Sep 17 00:00:00 2001
From: vilmibm <nathanielksmith@gmail.com>
Date: Wed, 25 Oct 2023 08:24:23 +0000
Subject: [PATCH] fill in emailtouser

---
 .gitignore              |  1 +
 cmd/emailtouser/main.go | 37 ++++++++++++++++++++++++++++++++++---
 2 files changed, 35 insertions(+), 3 deletions(-)

diff --git a/.gitignore b/.gitignore
index 15a5389..6444373 100644
--- a/.gitignore
+++ b/.gitignore
@@ -11,3 +11,4 @@ cmd/registeruser/registeruser
 cmd/stats/stats
 cmd/appendkeyfile/appendkeyfile
 cmd/help/help
+cmd/emailtouser/emailtouser
diff --git a/cmd/emailtouser/main.go b/cmd/emailtouser/main.go
index 26c18ea..f1b17ae 100644
--- a/cmd/emailtouser/main.go
+++ b/cmd/emailtouser/main.go
@@ -1,9 +1,40 @@
 package main
 
-import "fmt"
+import (
+	"errors"
+	"fmt"
+	"os"
 
-// TODO accept an email as an argument, write out a username associated with it or throw an error
+	"git.tilde.town/tildetown/town/towndb"
+)
+
+func _main(args []string) error {
+	if len(args) < 2 {
+		return errors.New("need email")
+	}
+	email := args[1]
+
+	db, err := towndb.ConnectDB()
+	if err != nil {
+		return err
+	}
+
+	user, err := towndb.UserForEmail(db, email)
+	if err != nil {
+		return err
+	}
+	if user == nil {
+		return errors.New("email does not correspond to user")
+	}
+
+	fmt.Println(user.Username)
+
+	return nil
+}
 
 func main() {
-	fmt.Println("TODO")
+	if err := _main(os.Args); err != nil {
+		fmt.Fprintf(os.Stderr, "%s\n", err.Error())
+		os.Exit(1)
+	}
 }