textalyzer 0.5.0

pub mod duplication;
pub mod file_utils;
pub mod frequency;
pub mod line_length;
pub mod output;
pub mod types;

extern crate colored;
extern crate ignore;
extern crate memmap2;
extern crate pad;
extern crate rayon;
extern crate terminal_size;
extern crate unicode_width;

use colored::Colorize;
use std::error::Error;
use std::fs;
use std::io::Write;
use std::path::Path;

use duplication::{find_duplicate_lines, find_multi_line_duplications};
use file_utils::{find_all_files, load_files};
use frequency::{format_freq_map, generate_frequency_map};
use line_length::process_and_output_line_length;
use output::output_duplications;
use types::{Command, Config, FrequencyItem};
use types::{DuplicationItem, DuplicationLocation};

pub fn run<A: Write>(
  config: Config,
  mut output_stream: A,
) -> Result<(), Box<dyn Error>> {
  match config.command {
    Command::Histogram { filepath, json } => {
      let file_content = fs::read_to_string(filepath)?;
      let freq_map = generate_frequency_map(&file_content);

      if json {
        // Convert HashMap to Vec<FrequencyItem> for stable JSON output
        let mut freq_vec: Vec<FrequencyItem> = freq_map
          .into_iter()
          .map(|(word, count)| FrequencyItem { word, count })
          .collect();
        // Sort by count descending, then alphabetically for stability
        freq_vec
          .sort_by(|a, b| b.count.cmp(&a.count).then(a.word.cmp(&b.word)));
        let json_output = serde_json::to_string_pretty(&freq_vec)?;
        writeln!(&mut output_stream, "{json_output}")?;
      } else {
        let formatted = format_freq_map(freq_map);
        // Use instead writeln! of println! to avoid "broken pipe" errors
        writeln!(&mut output_stream, "{formatted}")?;
      }
      Ok(())
    }
    Command::Duplication {
      paths,
      min_lines,
      files_only,
      json,
    } => {
      // Collect all file entries from all specified paths
      let mut all_files = Vec::new();
      let mut scanned_dirs = 0;
      let mut scanned_files = 0;

      // Process each path argument
      for path_str in paths {
        let path = Path::new(&path_str);

        if path.is_file() {
          // Single file
          all_files.push(path.to_path_buf());
          scanned_files += 1;
        } else if path.is_dir() {
          // Directory traversal
          let files = find_all_files(path)?;
          writeln!(
            &mut output_stream,
            "{}",
            format!(
              "🔎 Scanning {} files in directory: {}",
              files.len(),
              path.display()
            )
            .bold()
          )?;

          all_files.extend(files);
          scanned_dirs += 1;
        } else {
          return Err(
            format!("Path does not exist: {}", path.display()).into(),
          );
        }
      }

      if scanned_dirs == 0 && scanned_files > 0 {
        writeln!(
          &mut output_stream,
          "{}",
          format!("🔎 Scanning {} file(s)", all_files.len()).bold()
        )?;
      }

      if all_files.is_empty() {
        return Err("No valid files found in the specified paths".into());
      }

      // Load all collected files
      let file_entries = load_files(all_files)?;

      // Choose the appropriate function based on the min_lines value
      let duplications = if min_lines <= 1 {
        // For min_lines of 1, use the single-line detection function
        find_duplicate_lines(file_entries)
      } else {
        // For min_lines > 1, use the multi-line detection with filtering
        let mut results = find_multi_line_duplications(file_entries);

        // Only include those with at least min_lines non-empty lines
        results.retain(|(content, _)| {
          let non_empty_lines = content
            .split('\n')
            .filter(|line| !line.trim().is_empty())
            .count();
          non_empty_lines >= min_lines
        });

        results
      };

      if json {
        let semantic: Vec<DuplicationItem> = duplications
          .into_iter()
          .map(|(content, locs)| DuplicationItem {
            content,
            locations: locs
              .into_iter()
              .map(|(path, line)| DuplicationLocation { path, line })
              .collect(),
          })
          .collect();
        let json_output = serde_json::to_string_pretty(&semantic)?;
        writeln!(&mut output_stream, "{json_output}")?;
        Ok(())
      } else {
        output_duplications(duplications, output_stream, files_only)
      }
    }
    Command::LineLength { paths, json } => {
      // Collect all file entries from all specified paths
      let mut all_files = Vec::new();
      let mut scanned_dirs = 0;
      let mut scanned_files = 0;

      // Process each path argument
      for path_str in paths {
        let path = Path::new(&path_str);

        if path.is_file() {
          // Single file
          all_files.push(path.to_path_buf());
          scanned_files += 1;
        } else if path.is_dir() {
          // Directory traversal
          let files = find_all_files(path)?;
          writeln!(
            &mut output_stream,
            "{}",
            format!(
              "🔎 Scanning {} files in directory: {}",
              files.len(),
              path.display()
            )
            .bold()
          )?;

          all_files.extend(files);
          scanned_dirs += 1;
        } else {
          return Err(
            format!("Path does not exist: {}", path.display()).into(),
          );
        }
      }

      if scanned_dirs == 0 && scanned_files > 0 {
        writeln!(
          &mut output_stream,
          "{}",
          format!("🔎 Scanning {} file(s)", all_files.len()).bold()
        )?;
      }

      if all_files.is_empty() {
        return Err("No valid files found in the specified paths".into());
      }

      // Load all collected files
      let file_entries = load_files(all_files)?;

      // Process and output the line length histogram
      process_and_output_line_length(file_entries, output_stream, json)
    }
  }
}