Add method to scan revisions

src/bin/scan-revision.rs

@@ -0,0 +1,35 @@
+use anyhow::{
+    Context,
+    Result,
+};
+use clap::{
+    Parser,
+};
+use flake_tracker::{
+    scan::{
+        scan_revision,
+    },
+    storage::{
+        Storage,
+    },
+};
+
+#[derive(Parser)]
+#[command(version, about, long_about = None)]
+struct Cli {
+    flake_uri: String,
+    revision_uri: String,
+}
+
+#[tokio::main]
+async fn main() -> Result<()> {
+    let cli = Cli::parse();
+
+    let storage = Storage::connect("sqlite://flake-tracker.db")
+        .await
+        .context("Failed to connect to database")?;
+
+    scan_revision(storage, &cli.flake_uri, Some(&cli.revision_uri)).await?;
+
+    Ok(())
+}

src/scan.rs

@@ -21,18 +21,38 @@ use crate::{
 use std::process::Command;
 
 pub async fn scan_flake(storage: Storage, flake_uri: &str) -> Result<()> {
-    let scan_time = Utc::now().timestamp();
-
-    let flake_metadata = fetch_metadata(flake_uri)
+    scan_revision(storage, flake_uri, None)
         .await?;
 
-    let revision_row = get_revision_from_metadata(&flake_metadata)?;
+    Ok(())
+}
+
+pub async fn scan_revision(storage: Storage, flake_uri: &str, revision_uri: Option<&str>) -> Result<()> {
+    let scan_time = Utc::now().timestamp();
+
+    let fetch_uri = match revision_uri {
+        Some(revision_uri) => revision_uri,
+        None => flake_uri,
+    };
+
+    let flake_metadata = fetch_metadata(fetch_uri)
+        .await?;
+
+    let mut revision_row = get_revision_from_metadata(&flake_metadata)?;
+    if let Some(_) = revision_uri {
+        revision_row.flake_uri = Some(flake_uri.to_string());
+    }
 
     storage.set_revision(revision_row)
         .await?;
 
     let mut flake_row = get_flake_from_metadata(&flake_metadata)?;
+    if let Some(_) = revision_uri {
+        flake_row.flake_uri = flake_uri.to_string();
+    }
+    else {
         flake_row.tracker_last_scanned = Some(scan_time.clone());
+    }
 
     storage.set_flake(flake_row)
         .await?;