From 2e0bf984a34f6577591adbf33525d134f6390bb7 Mon Sep 17 00:00:00 2001
From: "Christoph J. Scherr" <Christoph.Scherr@newtec.de>
Date: Thu, 1 Feb 2024 10:39:58 +0100
Subject: [PATCH] serde enum

---
 members/serde-json-demo/Cargo.toml  |  1 +
 members/serde-json-demo/src/main.rs | 22 +++++++++++++++++++---
 2 files changed, 20 insertions(+), 3 deletions(-)

diff --git a/members/serde-json-demo/Cargo.toml b/members/serde-json-demo/Cargo.toml
index 165506e..33ad066 100644
--- a/members/serde-json-demo/Cargo.toml
+++ b/members/serde-json-demo/Cargo.toml
@@ -6,6 +6,7 @@ edition = "2021"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
+anyhow = "1.0.79"
 chrono = { version = "0.4.26", features = ["serde"] }
 serde = { version = "1.0.171", features = ["derive"] }
 serde_json = "1.0.102"
diff --git a/members/serde-json-demo/src/main.rs b/members/serde-json-demo/src/main.rs
index a9d16a4..1f84d3c 100644
--- a/members/serde-json-demo/src/main.rs
+++ b/members/serde-json-demo/src/main.rs
@@ -1,6 +1,7 @@
 use chrono;
 use serde::{Deserialize, Serialize};
 use serde_json;
+use anyhow;
 
 #[derive(Serialize, Deserialize, Clone, Debug, PartialEq)]
 #[serde(rename_all = "UPPERCASE")]
@@ -18,8 +19,16 @@ struct Qux {
     j: serde_json::Value,
 }
 
-fn main() {
-    let qj = r#"{
+#[derive(Serialize, Deserialize, Clone, Debug, PartialEq)]
+#[serde(rename_all = "lowercase")]
+enum Color {
+    Green,
+    Yellow,
+    Red,
+}
+
+fn main() -> anyhow::Result<()> {
+    let qux_source = r#"{
         "some Key": [1, 2, 3],
         "deep": {
             "m": true
@@ -30,7 +39,7 @@ fn main() {
         q: Qux {
             i: 19,
             b: false,
-            j: serde_json::from_str(qj).unwrap(),
+            j: serde_json::from_str(qux_source).unwrap(),
         },
         t: chrono::offset::Utc::now(),
     };
@@ -38,4 +47,11 @@ fn main() {
     println!("foo:\n\n{}", foostr);
     let foo2: Foo = serde_json::from_str(&foostr).unwrap();
     println!("same?: {}", foo == foo2);
+
+    let color_source = r#""yellow""#;
+    let color: Color = serde_json::from_str(color_source)?;
+    dbg!(&color);
+    let color_str = serde_json::to_string(&color)?;
+    dbg!(&color_str);
+    Ok(())
 }