Refactor project and index handling

- Standardized formatting across key functions in `project.rs`.
- Updated `index::handle` and `build_index` to incorporate the `config` parameter.
- Improved index-building logic to include project details and enhanced issue tracking.
- Replaced variable names like `files` with `paths` for clarity in `scan.rs`.

src/commands/index.rs

@@ -1,10 +1,15 @@
 use std::fs;
 use crate::cli::IndexAction;
+use crate::database::index::{Indexer, IssueRow};
+use crate::patterns::Severity;
+use crate::utils::Config;
 use crate::utils::project::get_project_info;
+use crate::walk::spawn_senders;
 
 pub fn handle(
     action: IndexAction,
     database_dir: &std::path::Path,
+    config: &Config,
 ) -> Result<(), Box<dyn std::error::Error>> {
     match action {
         IndexAction::Build { path, force } => {
@@ -12,8 +17,7 @@ pub fn handle(
             let (project_name, db_path) = get_project_info(&build_path, database_dir)?;
 
             if force || !db_path.exists() {
-                println!("Building index for: {}", project_name);
-                build_index(&build_path, &db_path)?;
+                build_index(&project_name, &build_path, &db_path, config)?;
                 println!("Index built: {}", db_path.display());
             } else {
                 println!("Index already exists. Use --force to rebuild.");
@@ -38,10 +42,35 @@ pub fn handle(
 }
 
 pub fn build_index(
-    _project_path: &std::path::Path,
+    project_name: &str,
+    project_path: &std::path::Path,
     db_path: &std::path::Path,
+    config: &Config,
 ) -> Result<(), Box<dyn std::error::Error>> {
-    // TODO: Implement actual index building
+    tracing::debug!("Building index for: {}", project_name);
     fs::File::create(db_path)?;
+    
+    let mut indexer = Indexer::new(&project_name, &db_path)?;
+    let rx = spawn_senders(project_path, config);
+    for path in rx.iter().flatten() {
+        let issues = crate::commands::scan::run_rules_on_file(&path, config)?;
+        let file_id = indexer.upsert_file(&path)?;
+
+        let issue_rows: Vec<IssueRow> = issues
+          .iter()
+          .map(|d| IssueRow {
+              rule_id: d.id.as_ref(),
+              severity: match d.severity {
+                  Severity::High => "HIGH",
+                  Severity::Medium => "MEDIUM",
+                  Severity::Low => "LOW",
+              },
+              line: d.line as i64,
+              col: d.col as i64,
+          })
+          .collect();
+
+        indexer.replace_issues(file_id, issue_rows)?;
+    }
     Ok(())
 }