use crate::detectors::base::{Detector, DetectorConfig};
use uuid::Uuid;
use crate::graph::GraphStore;
use crate::models::{deterministic_finding_id, Finding, Severity};
use anyhow::Result;
use std::path::PathBuf;
pub struct LargeFilesDetector {
repository_path: PathBuf,
max_findings: usize,
threshold: usize,
}
impl LargeFilesDetector {
pub fn new(repository_path: impl Into<PathBuf>) -> Self {
Self { repository_path: repository_path.into(), max_findings: 50, threshold: 500 }
}
}
impl Detector for LargeFilesDetector {
fn name(&self) -> &'static str { "large-files" }
fn description(&self) -> &'static str { "Detects files exceeding size threshold" }
fn detect(&self, _graph: &GraphStore) -> Result<Vec<Finding>> {
let mut findings = vec![];
let walker = ignore::WalkBuilder::new(&self.repository_path).hidden(false).git_ignore(true).build();
for entry in walker.filter_map(|e| e.ok()) {
if findings.len() >= self.max_findings { break; }
let path = entry.path();
if !path.is_file() { continue; }
let ext = path.extension().and_then(|e| e.to_str()).unwrap_or("");
if !matches!(ext, "py"|"js"|"ts"|"jsx"|"tsx"|"rs"|"go"|"java"|"cs"|"cpp"|"c"|"h"|"rb"|"php") { continue; }
if let Some(content) = crate::cache::global_cache().get_content(path) {
let lines = content.lines().count();
if lines > self.threshold {
findings.push(Finding {
id: Uuid::new_v4().to_string(),
detector: "LargeFilesDetector".to_string(),
severity: if lines > 2000 { Severity::High } else if lines > 1000 { Severity::Medium } else { Severity::Low },
title: format!("Large file: {} lines", lines),
description: format!("File has {} lines (threshold: {})", lines, self.threshold),
affected_files: vec![path.to_path_buf()],
line_start: Some(1),
line_end: Some(lines as u32),
suggested_fix: Some("Split into smaller, focused modules.".to_string()),
estimated_effort: Some("60 minutes".to_string()),
category: Some("maintainability".to_string()),
cwe_id: None,
why_it_matters: Some("Large files are hard to understand and maintain.".to_string()),
..Default::default()
});
}
}
}
Ok(findings)
}
}