use tools_fs::{read_file, glob_list, grep, write_file, edit_file};
use std::fs;
use tempfile::tempdir;

#[test]
fn read_and_glob_respect_gitignore() {
    let dir = tempdir().unwrap();
    let root = dir.path();
    fs::write(root.join("a.txt"), "hello").unwrap();
    fs::create_dir(root.join("secret")).unwrap();
    fs::write(root.join("secret/secret.txt"), "token=123").unwrap();
    fs::write(root.join(".gitignore"), "secret/\n").unwrap();

    let pattern = format!("{}/**/*", root.display());
    let files = glob_list(&pattern).unwrap();
    assert!(files.iter().any(|p| p.ends_with("a.txt")));
    assert!(!files.iter().any(|p| p.contains("secret.txt")));
    assert_eq!(read_file(root.join("a.txt").to_str().unwrap()).unwrap(), "hello");
}

#[test]
fn grep_finds_lines() {
    let dir = tempdir().unwrap();
    let root = dir.path();
    fs::write(root.join("a.rs"), "fn main() { println!(\"hello\"); }").unwrap();

    let hits = grep(root.to_str().unwrap(), "hello").unwrap();
    assert!(hits.iter().any(|(_p, _ln, text)| text.contains("hello")));
}

#[test]
fn write_file_creates_new_file() {
    let dir = tempdir().unwrap();
    let file_path = dir.path().join("new.txt");

    write_file(file_path.to_str().unwrap(), "new content").unwrap();

    assert_eq!(read_file(file_path.to_str().unwrap()).unwrap(), "new content");
}

#[test]
fn write_file_overwrites_existing() {
    let dir = tempdir().unwrap();
    let file_path = dir.path().join("existing.txt");
    fs::write(&file_path, "old content").unwrap();

    write_file(file_path.to_str().unwrap(), "new content").unwrap();

    assert_eq!(read_file(file_path.to_str().unwrap()).unwrap(), "new content");
}

#[test]
fn edit_file_replaces_exact_match() {
    let dir = tempdir().unwrap();
    let file_path = dir.path().join("test.txt");
    let original = "line 1\nline 2\nline 3\n";
    fs::write(&file_path, original).unwrap();

    edit_file(file_path.to_str().unwrap(), "line 2", "modified line 2").unwrap();

    let result = read_file(file_path.to_str().unwrap()).unwrap();
    assert_eq!(result, "line 1\nmodified line 2\nline 3\n");
}

#[test]
fn edit_file_replaces_multiline() {
    let dir = tempdir().unwrap();
    let file_path = dir.path().join("test.txt");
    let original = "line 1\nline 2\nline 3\nline 4\n";
    fs::write(&file_path, original).unwrap();

    edit_file(file_path.to_str().unwrap(), "line 2\nline 3", "new content").unwrap();

    let result = read_file(file_path.to_str().unwrap()).unwrap();
    assert_eq!(result, "line 1\nnew content\nline 4\n");
}

#[test]
fn edit_file_fails_on_ambiguous_match() {
    let dir = tempdir().unwrap();
    let file_path = dir.path().join("test.txt");
    let original = "duplicate\nsome text\nduplicate\n";
    fs::write(&file_path, original).unwrap();

    let result = edit_file(file_path.to_str().unwrap(), "duplicate", "changed");

    assert!(result.is_err());
    let err_msg = result.unwrap_err().to_string();
    assert!(err_msg.contains("Ambiguous") || err_msg.contains("multiple") || err_msg.contains("occurrences"));
}

#[test]
fn edit_file_fails_on_no_match() {
    let dir = tempdir().unwrap();
    let file_path = dir.path().join("test.txt");
    let original = "line 1\nline 2\n";
    fs::write(&file_path, original).unwrap();

    let result = edit_file(file_path.to_str().unwrap(), "nonexistent", "changed");

    assert!(result.is_err());
    let err_msg = result.unwrap_err().to_string();
    assert!(err_msg.contains("not found") || err_msg.contains("String to replace"));
}