Make CDH great (...not again) (#3)

src/output/mod.rs

@@ -0,0 +1,61 @@
+use std::io::{Result, Error, ErrorKind};
+
+use handlebars::Handlebars;
+use log::error;
+
+use crate::types::ExecResult;
+
+pub(crate) trait Output {
+    fn print(data: &Vec<ExecResult>) -> Result<String>;
+}
+
+pub(crate) struct HTML;
+
+impl Output for HTML {
+    fn print(data: &Vec<ExecResult>) -> Result<String> {
+        // To generate htlm output, I have to use templates because I haven't found any other good
+        // solution
+        let template = r#"
+<table>
+    <tr>
+        <th>Chart Name</th>
+        <th>Current Version</th>
+        <th>Latest Version</th>
+        <th>Status</th>
+    </tr>
+    {{#each this as |tr|}}
+    <tr>
+        <th>{{tr.name}}</th>
+        <th>{{tr.current_version}}</th>
+        <th>{{tr.latest_version}}</th>
+        <th>{{tr.status}}</th>
+    </tr>
+    {{/each}}
+</table>
+"#;
+
+        let mut reg = Handlebars::new();
+        // TODO: Handle this error
+        reg.register_template_string("html_table", template)
+            .unwrap();
+
+        match reg.render("html_table", &data) {
+            Ok(res) => Ok(res),
+            Err(err) => {
+                error!("{}", err);
+                return Err(Error::new(ErrorKind::InvalidInput, err.to_string()));
+            }
+        }
+    }
+}
+
+pub(crate) struct YAML;
+
+impl Output for YAML {
+    fn print(data: &Vec<ExecResult>) -> Result<String> {
+        match serde_yaml::to_string(&data) {
+            Ok(res) => return Ok(res),
+            Err(err) => return Err(Error::new(ErrorKind::InvalidData, err.to_string())),
+        }
+    }
+}