Initial commit

src/cli.rs

@@ -0,0 +1,37 @@
+use anyhow::{Result, bail};
+use clap::Parser;
+use std::path::PathBuf;
+
+#[derive(Parser, Debug)]
+#[command(author, version, about, long_about = None)]
+pub struct Args {
+    /// Path to the input JSON configuration file.
+    #[arg(short, long)]
+    pub input: PathBuf,
+
+    /// Path to the output directory for downloaded rule files.
+    #[arg(short, long)]
+    pub output: PathBuf,
+
+    /// Number of concurrent download operations.
+    #[arg(long, default_value_t = 10)]
+    pub concurrency: usize,
+
+    /// The new domain to use for rewriting rule URLs.
+    #[arg(long)]
+    pub domain: Option<String>,
+
+    /// The path on the domain for the rewritten rule URLs.
+    #[arg(long, name = "rule-path")]
+    pub rule_path: Option<String>,
+}
+
+impl Args {
+    /// Validates that domain and rule_path are either both present or both absent.
+    pub fn validate_domain_and_rule_path(&self) -> Result<()> {
+        if self.domain.is_some() != self.rule_path.is_some() {
+            bail!("--domain and --rule-path must be used together.");
+        }
+        Ok(())
+    }
+}