konservejo: provide better feedback for config validation

Signed-off-by: NotAShelf <raf@notashelf.dev>
Change-Id: I1c4e94780890b1ea440ee5b72959d0d96a6a6964

src/main.rs

@@ -64,11 +64,101 @@ async fn main() -> Result<()> {
       }
     },
 
+    #[allow(clippy::print_stdout)]
     Commands::ValidateConfig => {
-      info!("Validating configuration from {}", cli.config);
-      config::Config::from_file(&cli.config)
+      use std::io::Write;
+
+      println!("Validating configuration from: {}", cli.config);
+      let config = config::Config::from_file(&cli.config)
         .map_err(|e| eyre!("Configuration is invalid: {}", e))?;
-      info!("Configuration is valid");
+
+      println!("\n[OK] Configuration structure is valid\n");
+
+      println!("Service: {}", config.service.name);
+      println!("  Concurrency limit: {}", config.service.concurrency_limit);
+      println!("  State DB: {}", config.service.state_db_path);
+      println!("  Temp dir: {}", config.service.temp_dir);
+      println!(
+        "  Retry: {} attempts, {}ms initial backoff",
+        config.service.retry.max_retries,
+        config.service.retry.initial_backoff_ms
+      );
+
+      println!("\nSources ({}):", config.sources.len());
+      for (i, source) in config.sources.iter().enumerate() {
+        match source {
+          config::SourceConfig::Forgejo(cfg) => {
+            println!("  [{}] {} -> {}", i + 1, cfg.id, cfg.api_url);
+            if !cfg.scope.organizations.is_empty() {
+              println!(
+                "      Organizations: {}",
+                cfg.scope.organizations.join(", ")
+              );
+            }
+            if !cfg.scope.exclude_repos.is_empty() {
+              println!(
+                "      Excluded: {}",
+                cfg.scope.exclude_repos.join(", ")
+              );
+            }
+          },
+        }
+      }
+
+      println!("\nSinks ({}):", config.sinks.len());
+      for (i, sink) in config.sinks.iter().enumerate() {
+        match sink {
+          config::SinkConfig::Filesystem(cfg) => {
+            println!("  [{}] {} -> {}", i + 1, cfg.id, cfg.path);
+            println!("      Verify on write: {}", cfg.verify_on_write);
+            if let Some(days) = cfg.retention_days {
+              println!("      Retention: {days} days");
+            }
+          },
+          config::SinkConfig::S3(_) => {
+            println!("  [{}] S3 (NOT IMPLEMENTED - will error)", i + 1);
+          },
+        }
+      }
+
+      print!("\nChecking paths... ");
+      std::io::stdout()
+        .flush()
+        .map_err(|e| eyre!("Failed to flush stdout: {e}"))?;
+
+      let state_dir = std::path::Path::new(&config.service.state_db_path)
+        .parent()
+        .ok_or_else(|| eyre!("Invalid state_db_path (no parent directory)"))?;
+
+      if !state_dir.exists() {
+        bail!(
+          "State directory does not exist: {}. Create it first.",
+          state_dir.display()
+        );
+      }
+
+      let temp_dir = std::path::Path::new(&config.service.temp_dir);
+      if !temp_dir.exists() {
+        bail!(
+          "Temp directory does not exist: {}. Create it first.",
+          temp_dir.display()
+        );
+      }
+
+      for sink in &config.sinks {
+        if let config::SinkConfig::Filesystem(cfg) = sink {
+          let path = std::path::Path::new(&cfg.path);
+          if !path.exists() {
+            bail!(
+              "Sink directory does not exist: {}. Create it first.",
+              path.display()
+            );
+          }
+        }
+      }
+
+      println!("[OK]");
+      println!("\n[OK] Configuration is valid and paths are accessible");
       Ok(())
     },