From 7d20dededb316ab9a8b1285c6f003dc93994636d Mon Sep 17 00:00:00 2001
From: Techassi <sascha.lautenschlaeger@stackable.tech>
Date: Thu, 5 Oct 2023 14:47:15 +0200
Subject: [PATCH] Initial commit

---
 rust/stackablectl/src/main.rs                 |   2 +-
 rust/stackablectl/src/output/mod.rs           | 115 ++++++++++++++++--
 .../src/output/templates/result_empty.tpl     |   0
 .../src/output/templates/result_success.tpl   |  15 +++
 4 files changed, 124 insertions(+), 8 deletions(-)
 create mode 100644 rust/stackablectl/src/output/templates/result_empty.tpl
 create mode 100644 rust/stackablectl/src/output/templates/result_success.tpl

diff --git a/rust/stackablectl/src/main.rs b/rust/stackablectl/src/main.rs
index 7e2d461c..54db4ad9 100644
--- a/rust/stackablectl/src/main.rs
+++ b/rust/stackablectl/src/main.rs
@@ -42,6 +42,6 @@ async fn main() -> Result<(), Error> {
     }
 
     let output = app.run().await?;
-    println!("{output}");
+    print!("{output}");
     Ok(())
 }
diff --git a/rust/stackablectl/src/output/mod.rs b/rust/stackablectl/src/output/mod.rs
index 574c2099..2b67305f 100644
--- a/rust/stackablectl/src/output/mod.rs
+++ b/rust/stackablectl/src/output/mod.rs
@@ -1,14 +1,115 @@
-use lazy_static::lazy_static;
+use snafu::{ResultExt, Snafu};
+use stackable_cockpit::constants::{DEFAULT_OPERATOR_NAMESPACE, DEFAULT_PRODUCT_NAMESPACE};
 use tera::Tera;
 
-lazy_static! {
-    pub static ref RENDERER: Tera = {
-        let mut renderer = Tera::default();
+pub type Result<T, E = Error> = std::result::Result<T, E>;
+
+#[derive(Debug, Snafu)]
+pub enum Error {
+    #[snafu(display("failed to create output renderer"))]
+    CreationError { source: tera::Error },
+
+    #[snafu(display("failed to render console output"))]
+    RenderError { source: tera::Error },
+}
+
+pub trait ContextExt {
+    fn into_context(self) -> tera::Context;
+}
+
+pub struct Context {}
+
+#[derive(Debug, Default)]
+pub struct SuccessContext {
+    pub used_operator_namespace: String,
+    pub used_product_namespace: String,
 
-        renderer.add_raw_templates(vec![(include_str!("templates/"))]);
+    pub post_hints: Vec<String>,
+    pub pre_hints: Vec<String>,
+
+    pub output: String,
+}
+
+impl ContextExt for SuccessContext {
+    fn into_context(self) -> tera::Context {
+        let mut ctx = tera::Context::new();
+
+        ctx.insert("default_operator_namespace", DEFAULT_OPERATOR_NAMESPACE);
+        ctx.insert("default_product_namespace", DEFAULT_PRODUCT_NAMESPACE);
+
+        ctx.insert("used_operator_namespace", &self.used_operator_namespace);
+        ctx.insert("used_product_namespace", &self.used_product_namespace);
+
+        ctx.insert("post_hints", &self.post_hints);
+        ctx.insert("pre_hints", &self.pre_hints);
+
+        ctx.insert("output", &self.output);
+
+        ctx
+    }
+}
+
+impl SuccessContext {
+    pub fn new(output: String) -> Self {
+        Self {
+            output,
+            ..Default::default()
+        }
+    }
+
+    pub fn add_pre_hint(&mut self, pre_hint: String) -> &mut Self {
+        self.pre_hints.push(pre_hint);
+        self
+    }
+
+    pub fn add_post_hint(&mut self, post_hint: String) -> &mut Self {
+        self.post_hints.push(post_hint);
+        self
+    }
+}
+
+pub struct OutputRenderer {
+    renderer: Tera,
+}
+
+impl OutputRenderer {
+    pub fn new() -> Result<Self> {
+        let mut renderer = Tera::default();
 
         renderer
-    };
+            .add_raw_templates(vec![
+                (
+                    "result_success",
+                    include_str!("templates/result_success.tpl"),
+                ),
+                ("result_empty", include_str!("templates/result_empty.tpl")),
+            ])
+            .context(CreationSnafu)?;
+
+        Ok(Self { renderer })
+    }
+
+    pub fn success(&self, context: SuccessContext) -> Result<String> {
+        self.renderer
+            .render("result_success", &context.into_context())
+            .context(RenderSnafu)
+    }
 }
 
-pub struct OutputRenderer {}
+#[cfg(test)]
+mod test {
+    use super::*;
+
+    #[test]
+    fn simple() {
+        let renderer = OutputRenderer::new().unwrap();
+        let mut context = SuccessContext::new("Eyyy yooo".into());
+
+        context
+            .add_pre_hint("This is pre hint number one".into())
+            .add_pre_hint("Pre hint number two".into());
+
+        let out = renderer.success(context).unwrap();
+        println!("{out}");
+    }
+}
diff --git a/rust/stackablectl/src/output/templates/result_empty.tpl b/rust/stackablectl/src/output/templates/result_empty.tpl
new file mode 100644
index 00000000..e69de29b
diff --git a/rust/stackablectl/src/output/templates/result_success.tpl b/rust/stackablectl/src/output/templates/result_success.tpl
new file mode 100644
index 00000000..8f3a5040
--- /dev/null
+++ b/rust/stackablectl/src/output/templates/result_success.tpl
@@ -0,0 +1,15 @@
+{% if pre_hints | length != 0 -%}
+{% for pre_hint in pre_hints -%}
+{{ pre_hint }}
+{% endfor %}
+{% endif -%}
+
+{%- if output | length != 0 %}
+{{ output }}
+{%- endif %}
+
+{% if post_hints | length != 0 -%}
+{% for post_hint in post_hints -%}
+{{ post_hint }}
+{% endfor -%}
+{% endif -%}