add config keys (#31)

Reviewed-on: http://192.168.1.227:3000/sfrembling/pallet/pulls/31
Co-authored-by: Shea Frembling <sfrembling@gmail.com>
Co-committed-by: Shea Frembling <sfrembling@gmail.com>

src/app.rs

@@ -95,6 +95,8 @@ enum UtilSubcommand {
         /// The build mode to generate for
         mode: Option<String>,
     },
+    /// Generate the config keys for Pallet.toml
+    GenConfigKeys,
 }
 
 #[derive(Clone, clap::ValueEnum)]
@@ -193,6 +195,15 @@ impl App {
                         std::process::exit(1);
                     }
                 }
+                UtilSubcommand::GenConfigKeys => {
+                    println!(
+                        "{} a property with a '?' indicates that the property is optional",
+                        "Hint".yellow().bold()
+                    );
+                    for (id, desc, dt) in crate::config::Config::get_config_syntax() {
+                        println!(" - {} ({}): {desc}", id.green().bold(), dt.blue().bold());
+                    }
+                }
             },
             Subcommand::List => {
                 if let Err(e) = list() {

src/config.rs

@@ -35,6 +35,46 @@ impl Config {
             self.build.iter().find(|bc| bc.name == self.default_build)
         }
     }
+
+    pub fn get_config_syntax() -> Vec<(String, String, String)> {
+        vec![
+            (
+                "compiler?",
+                "the compiler used by Pallet (defeault=gcc)",
+                "string",
+            ),
+            ("name", "the name of your application", "string"),
+            (
+                "default_build",
+                "the name of the build to use by default when running or building",
+                "string",
+            ),
+            (
+                "description?",
+                "a brief description of your application",
+                "string",
+            ),
+            ("version?", "the version of your application", "string"),
+            (
+                "authors?",
+                "the author or authors of your application",
+                "string[]",
+            ),
+            (
+                "build",
+                "a build config that can be used when compiling",
+                "{name: string, args: string[]}[]",
+            ),
+            (
+                "dependencies",
+                "libraries (such as zlib) used by your application that require pkg-config to be compiled correclty",
+                "string[]"
+            )
+        ]
+        .into_iter()
+        .map(|(a, b, c)| (a.to_owned(), b.to_owned(), c.to_owned()))
+        .collect()
+    }
 }
 
 #[derive(serde::Deserialize, serde::Serialize)]