From d32d40c51d41138c24306e2f7ad29d513e2bf766 Mon Sep 17 00:00:00 2001
From: Henry Henderson <henry@thegang.io>
Date: Wed, 3 Jul 2024 13:39:13 -0400
Subject: [PATCH 1/2] Add some additional functionality to client

- Ability to drop the cache from a request. Useful if the client is propagated through the request's life (e.g. call on a PUT/DELETE, etc.)
- Add options on a client. Perhaps you apply different TTL or settings for a particular request in your own middleware, etc.
---
 .gitignore |  5 ++++-
 cache.go   | 26 ++++++++++++++++++++++++++
 2 files changed, 30 insertions(+), 1 deletion(-)

diff --git a/.gitignore b/.gitignore
index 42cd73d..efbba5d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,4 @@
-/vendor/
\ No newline at end of file
+/vendor/
+.idea/
+.vs/
+.vscode/
diff --git a/cache.go b/cache.go
index 3bf46cf..429551a 100644
--- a/cache.go
+++ b/cache.go
@@ -159,6 +159,32 @@ func (c *Client) Middleware(next http.Handler) http.Handler {
 	})
 }
 
+// Drop releases the underlying cache for the request's URL.
+func (c *Client) Drop(r *http.Request) {
+	params := r.URL.Query()
+	key := generateKey(r.URL.String())
+
+	if _, ok := params[c.refreshKey]; ok {
+		delete(params, c.refreshKey)
+
+		r.URL.RawQuery = params.Encode()
+		key = generateKey(r.URL.String())
+	}
+
+	c.adapter.Release(key)
+}
+
+// AddOptions allows the addition or re-application of options after a client has been created.
+func (c *Client) AddOptions(opts ...ClientOption) error {
+	for _, opt := range opts {
+		if err := opt(c); err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
 func (c *Client) cacheableMethod(method string) bool {
 	for _, m := range c.methods {
 		if method == m {

From d5b121370e434faec6e9e1699e6e68ce13fb2825 Mon Sep 17 00:00:00 2001
From: Henry Henderson <henry@thegang.io>
Date: Wed, 3 Jul 2024 14:35:44 -0400
Subject: [PATCH 2/2] Fix key generation on POST for Drop method

---
 cache.go | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/cache.go b/cache.go
index 429551a..d9ead4e 100644
--- a/cache.go
+++ b/cache.go
@@ -164,6 +164,18 @@ func (c *Client) Drop(r *http.Request) {
 	params := r.URL.Query()
 	key := generateKey(r.URL.String())
 
+	if r.Method == http.MethodPost && r.Body != nil {
+		body, err := io.ReadAll(r.Body)
+		defer r.Body.Close()
+		if err != nil {
+			return
+		}
+
+		reader := io.NopCloser(bytes.NewBuffer(body))
+		key = generateKeyWithBody(r.URL.String(), body)
+		r.Body = reader
+	}
+
 	if _, ok := params[c.refreshKey]; ok {
 		delete(params, c.refreshKey)