Tidy up xtask

crates/xtask/Cargo.toml

@@ -6,7 +6,8 @@ publish = false
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-clap = "4.0"
+anyhow = "1.0"
+clap = {version = "4.0", features = ["derive"]}
 theme = {path = "../theme"}
 serde_json.workspace = true
 schemars.workspace = true

crates/xtask/src/cli.rs

@@ -0,0 +1,23 @@
+use clap::{Parser, Subcommand};
+use std::path::PathBuf;
+/// Common utilities for Zed developers.
+// For more information, see [matklad's repository README](https://github.com/matklad/cargo-xtask/)
+#[derive(Parser)]
+#[command(author, version, about, long_about = None)]
+#[command(propagate_version = true)]
+pub struct Cli {
+    #[command(subcommand)]
+    pub command: Commands,
+}
+
+/// Command to run.
+#[derive(Subcommand)]
+pub enum Commands {
+    /// Builds theme types for interop with Typescript.
+    BuildThemeTypes {
+        #[clap(short, long, default_value = "schemas")]
+        out_dir: PathBuf,
+        #[clap(short, long, default_value = "theme.json")]
+        file_name: PathBuf,
+    },
+}

crates/xtask/src/main.rs

@@ -1,11 +1,29 @@
 mod cli;
 
-use schemars::schema_for;
+use std::path::PathBuf;
 
+use anyhow::Result;
+use clap::Parser;
+use schemars::schema_for;
 use theme::Theme;
-fn main() {
+
+fn build_themes(mut out_dir: PathBuf, file_name: PathBuf) -> Result<()> {
     let theme = schema_for!(Theme);
-    let output = serde_json::to_string_pretty(&theme).unwrap();
-    std::fs::create_dir("schemas").ok();
-    std::fs::write("schemas/theme.json", output).ok();
+    let output = serde_json::to_string_pretty(&theme)?;
+
+    std::fs::create_dir(&out_dir)?;
+
+    let mut file_path = out_dir;
+    out_dir.push(file_name);
+
+    std::fs::write(file_path, output)?;
+
+    Ok(())
+}
+
+fn main() -> Result<()> {
+    let args = cli::Cli::parse();
+    match args.command {
+        cli::Commands::BuildThemeTypes { out_dir, file_name } => build_themes(out_dir, file_name),
+    }
 }