rustic-git 0.6.0

//! Status Checking Example
//!
//! This example demonstrates comprehensive status checking capabilities:
//! - Check clean vs dirty repository states
//! - Explore all FileStatus variants
//! - Use different status query methods
//! - Handle repositories with various file states
//!
//! Run with: cargo run --example status_checking

use rustic_git::{IndexStatus, Repository, Result, WorktreeStatus};
use std::env;
use std::fs;

fn main() -> Result<()> {
    println!("Rustic Git - Status Checking Example\n");

    let repo_path = env::temp_dir().join("rustic_git_status_example");

    // Clean up any previous run
    if repo_path.exists() {
        fs::remove_dir_all(&repo_path).expect("Failed to clean up previous example");
    }

    // Initialize repository
    println!("Setting up repository for status demonstration...");
    let repo = Repository::init(&repo_path, false)?;

    println!("=== Clean Repository Status ===\n");

    // Check initial status (should be clean)
    let status = repo.status()?;
    println!("Initial repository status:");
    display_status_summary(&status);
    println!();

    println!("=== Creating Files with Different States ===\n");

    // Create various types of files to demonstrate different statuses
    println!("Creating test files...");

    // Create some files that will be untracked
    fs::write(repo_path.join("untracked1.txt"), "This file is untracked")?;
    fs::write(repo_path.join("untracked2.txt"), "Another untracked file")?;

    // Create a .gitignore to demonstrate ignored files
    fs::write(repo_path.join(".gitignore"), "*.log\n*.tmp\n/temp/\n")?;

    // Create files that will be ignored
    fs::write(repo_path.join("debug.log"), "Log file content")?;
    fs::write(repo_path.join("cache.tmp"), "Temporary file")?;
    fs::create_dir_all(repo_path.join("temp"))?;
    fs::write(repo_path.join("temp/data.txt"), "Temp data")?;

    println!("Created test files");

    // Check status after creating untracked files
    println!("\nStatus after creating untracked files:");
    let status_untracked = repo.status()?;
    display_status_summary(&status_untracked);
    display_detailed_status(&status_untracked);
    println!();

    println!("=== Staging Files to Show 'Added' Status ===\n");

    // Stage some files to show "Added" status
    repo.add(&["untracked1.txt", ".gitignore"])?;
    println!("Staged untracked1.txt and .gitignore");

    let status_added = repo.status()?;
    println!("\nStatus after staging files:");
    display_status_summary(&status_added);
    display_detailed_status(&status_added);
    println!();

    println!("=== Creating Initial Commit ===\n");

    // Commit the staged files so we can demonstrate modified/deleted states
    let _hash = repo.commit("Initial commit with basic files")?;
    println!("Created initial commit");

    let status_after_commit = repo.status()?;
    println!("\nStatus after commit:");
    display_status_summary(&status_after_commit);
    if !status_after_commit.is_clean() {
        display_detailed_status(&status_after_commit);
    }
    println!();

    println!("=== Modifying Files to Show 'Modified' Status ===\n");

    // Modify existing tracked files
    fs::write(
        repo_path.join("untracked1.txt"),
        "This file has been MODIFIED!",
    )?;
    fs::write(
        repo_path.join(".gitignore"),
        "*.log\n*.tmp\n/temp/\n# Added comment\n",
    )?;
    println!("Modified untracked1.txt and .gitignore");

    let status_modified = repo.status()?;
    println!("\nStatus after modifying files:");
    display_status_summary(&status_modified);
    display_detailed_status(&status_modified);
    println!();

    println!("=== Demonstrating All Status Query Methods ===\n");

    // Stage one of the modified files to show mixed states
    repo.add(&["untracked1.txt"])?;
    println!("Staged untracked1.txt (now shows as Added)");

    let status_mixed = repo.status()?;
    println!("\nMixed status demonstration:");
    display_status_summary(&status_mixed);

    // Demonstrate different query methods
    println!("\nUsing different status query methods:");

    println!("   All files ({} total):", status_mixed.entries.len());
    for entry in &status_mixed.entries {
        println!(
            "      Index {:?}, Worktree {:?}: {}",
            entry.index_status,
            entry.worktree_status,
            entry.path.display()
        );
    }

    // Query by specific status
    let unstaged_files: Vec<_> = status_mixed.unstaged_files().collect();
    if !unstaged_files.is_empty() {
        println!("\n   Unstaged files ({}):", unstaged_files.len());
        for entry in &unstaged_files {
            println!("      - {}", entry.path.display());
        }
    }

    let untracked_files: Vec<_> = status_mixed.untracked_entries().collect();
    if !untracked_files.is_empty() {
        println!("\n   Untracked files ({}):", untracked_files.len());
        for entry in &untracked_files {
            println!("      - {}", entry.path.display());
        }
    }

    // Query by IndexStatus enum
    let added_files: Vec<_> = status_mixed
        .files_with_index_status(IndexStatus::Added)
        .collect();
    if !added_files.is_empty() {
        println!("\n   Added files ({}):", added_files.len());
        for entry in &added_files {
            println!("      - {}", entry.path.display());
        }
    }

    println!();

    println!("=== File Status Filtering Examples ===\n");

    // Demonstrate filtering capabilities
    println!("Filtering examples:");

    // Count files by status
    let mut index_status_counts = std::collections::HashMap::new();
    let mut worktree_status_counts = std::collections::HashMap::new();

    for entry in &status_mixed.entries {
        if !matches!(entry.index_status, IndexStatus::Clean) {
            *index_status_counts
                .entry(format!("{:?}", entry.index_status))
                .or_insert(0) += 1;
        }
        if !matches!(entry.worktree_status, WorktreeStatus::Clean) {
            *worktree_status_counts
                .entry(format!("{:?}", entry.worktree_status))
                .or_insert(0) += 1;
        }
    }

    println!("   Index status counts:");
    for (status, count) in &index_status_counts {
        println!("      {}: {} files", status, count);
    }

    println!("   Worktree status counts:");
    for (status, count) in &worktree_status_counts {
        println!("      {}: {} files", status, count);
    }

    // Filter for specific patterns
    let txt_files: Vec<_> = status_mixed
        .entries
        .iter()
        .filter(|entry| entry.path.to_string_lossy().ends_with(".txt"))
        .collect();

    if !txt_files.is_empty() {
        println!("\n   .txt files:");
        for entry in txt_files {
            println!(
                "      Index {:?}, Worktree {:?}: {}",
                entry.index_status,
                entry.worktree_status,
                entry.path.display()
            );
        }
    }

    println!();

    println!("=== Repository State Checking ===\n");

    println!("Repository state summary:");
    println!("   Total files tracked: {}", status_mixed.entries.len());
    println!("   Is clean: {}", status_mixed.is_clean());
    println!("   Has changes: {}", status_mixed.has_changes());

    if status_mixed.has_changes() {
        println!("   Repository needs attention!");

        let unstaged_count = status_mixed.unstaged_files().count();
        if unstaged_count > 0 {
            println!("      - {} files need to be staged", unstaged_count);
        }

        let untracked_count = status_mixed.untracked_entries().count();
        if untracked_count > 0 {
            println!("      - {} untracked files to consider", untracked_count);
        }

        let staged_count = status_mixed.staged_files().count();
        if staged_count > 0 {
            println!("      - {} files ready to commit", staged_count);
        }
    }

    // Clean up
    println!("\nCleaning up example repository...");
    fs::remove_dir_all(&repo_path)?;
    println!("Status checking example completed!");

    Ok(())
}

/// Display a summary of the repository status
fn display_status_summary(status: &rustic_git::GitStatus) {
    if status.is_clean() {
        println!("   Repository is clean (no changes)");
    } else {
        println!("   Repository has {} changes", status.entries.len());
        println!("      Unstaged: {}", status.unstaged_files().count());
        println!("      Untracked: {}", status.untracked_entries().count());
    }
}

/// Display detailed status information
fn display_detailed_status(status: &rustic_git::GitStatus) {
    if !status.entries.is_empty() {
        println!("   Detailed file status:");
        for entry in &status.entries {
            let index_marker = match entry.index_status {
                IndexStatus::Modified => "[M]",
                IndexStatus::Added => "[A]",
                IndexStatus::Deleted => "[D]",
                IndexStatus::Renamed => "[R]",
                IndexStatus::Copied => "[C]",
                IndexStatus::Clean => "[ ]",
            };
            let worktree_marker = match entry.worktree_status {
                WorktreeStatus::Modified => "[M]",
                WorktreeStatus::Deleted => "[D]",
                WorktreeStatus::Untracked => "[?]",
                WorktreeStatus::Ignored => "[I]",
                WorktreeStatus::Clean => "[ ]",
            };
            println!(
                "      {}{} Index {:?}, Worktree {:?}: {}",
                index_marker,
                worktree_marker,
                entry.index_status,
                entry.worktree_status,
                entry.path.display()
            );
        }
    }
}