From b1641d1af92eca6e475ea76aaed21a5dab0df185 Mon Sep 17 00:00:00 2001
From: Brian Picciano <mediocregopher@gmail.com>
Date: Tue, 13 Sep 2022 12:12:28 +0200
Subject: remove chat functionality completely

---
 srv/src/chat/user.go | 68 ----------------------------------------------------
 1 file changed, 68 deletions(-)
 delete mode 100644 srv/src/chat/user.go

(limited to 'srv/src/chat/user.go')

diff --git a/srv/src/chat/user.go b/srv/src/chat/user.go
deleted file mode 100644
index 3f5ab95..0000000
--- a/srv/src/chat/user.go
+++ /dev/null
@@ -1,68 +0,0 @@
-package chat
-
-import (
-	"encoding/hex"
-	"fmt"
-	"sync"
-
-	"golang.org/x/crypto/argon2"
-)
-
-// UserID uniquely identifies an individual user who has posted a message in a
-// Room.
-type UserID struct {
-
-	// Name will be the user's chosen display name.
-	Name string `json:"name"`
-
-	// Hash will be a hex string generated from a secret only the user knows.
-	Hash string `json:"id"`
-}
-
-// UserIDCalculator is used to calculate UserIDs.
-type UserIDCalculator struct {
-
-	// Secret is used when calculating UserID Hash salts.
-	Secret []byte
-
-	// TimeCost, MemoryCost, and Threads are used as inputs to the Argon2id
-	// algorithm which is used to generate the Hash.
-	TimeCost, MemoryCost uint32
-	Threads              uint8
-
-	// HashLen specifies the number of bytes the Hash should be.
-	HashLen uint32
-
-	// Lock, if set, forces concurrent Calculate calls to occur sequentially.
-	Lock *sync.Mutex
-}
-
-// NewUserIDCalculator returns a UserIDCalculator with sane defaults.
-func NewUserIDCalculator(secret []byte) *UserIDCalculator {
-	return &UserIDCalculator{
-		Secret:     secret,
-		TimeCost:   15,
-		MemoryCost: 128 * 1024,
-		Threads:    2,
-		HashLen:    16,
-		Lock:       new(sync.Mutex),
-	}
-}
-
-// Calculate accepts a name and password and returns the calculated UserID.
-func (c *UserIDCalculator) Calculate(name, password string) UserID {
-
-	input := fmt.Sprintf("%q:%q", name, password)
-
-	hashB := argon2.IDKey(
-		[]byte(input),
-		c.Secret, // salt
-		c.TimeCost, c.MemoryCost, c.Threads,
-		c.HashLen,
-	)
-
-	return UserID{
-		Name: name,
-		Hash: hex.EncodeToString(hashB),
-	}
-}
-- 
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