use std::env::temp_dir;
use std::fs::{create_dir_all, read_to_string, remove_dir_all, File};
use std::io::Write;
use std::path::{Path, PathBuf};
use std::process::{id, Command, Stdio};
use std::time::{SystemTime, UNIX_EPOCH};

pub fn setup_test_dir() -> PathBuf {
    let timestamp = SystemTime::now()
        .duration_since(UNIX_EPOCH)
        .unwrap()
        .as_nanos();
    let process_id = id();
    let random = random_string();
    let test_dir = temp_dir().join(format!("blog_test_{timestamp}_{process_id}_{random}"));
    create_dir_all(&test_dir)
        .expect("Could not create test directory");
    test_dir
}

pub fn cleanup_test_dir(test_dir: &PathBuf) {
    if test_dir.exists() {
        remove_dir_all(test_dir).unwrap();
    }
}

pub fn create_test_file(path: &PathBuf, content: &str) {
    let mut file = File::create(path).unwrap();
    file.write_all(content.as_bytes()).unwrap();
}

pub fn assert_file_contents(path: &PathBuf, expected: &str) {
    let content = read_to_string(path).unwrap();
    assert_eq!(content.trim(), expected.trim());
}

pub fn assert_file_contains(path: &PathBuf, expected: &str) {
    let content = read_to_string(path).unwrap();
    assert!(content.contains(expected));
}

pub fn assert_file_does_not_contain(path: &PathBuf, expected: &str) {
    let content = read_to_string(path).unwrap();
    assert!(!content.contains(expected));
}

pub fn create_remote(path: &Path) {
    Command::new("git")
        .current_dir(&path)
        .args(["init", "--bare", "-b", "main"])
        .stdout(Stdio::null())
        .stderr(Stdio::null())
        .status()
        .expect("Failed to initialize bare repository");
}

pub fn assert_file_in_repo_does_not_exist(repo_path: &str, file_path: &str) {
    let output = Command::new("git")
        .current_dir(&repo_path)
        .args(["show", &format!("main:{file_path}")])
        .stderr(Stdio::null())
        .output()
        .expect("Failed to read from repo");

    assert!(output.status.code().unwrap() != 0);
}

pub fn assert_file_in_repo_with_contents(repo_path: &str, file_path: &str, contents: &str) {
    let output = Command::new("git")
        .current_dir(&repo_path)
        .args(["show", &format!("main:{file_path}")])
        .stderr(Stdio::null())
        .output()
        .expect("Failed to read from repo");

    assert!(String::from_utf8(output.stdout)
        .map(|file| file.trim() == contents)
        .unwrap_or(false));
}

pub fn commit_file_to_remote(repo_path: &str, file_path: &str, contents: &str) {
    let test_dir = setup_test_dir();

    Command::new("git")
        .current_dir(&test_dir)
        .args(["clone", &repo_path, "."])
        .stdout(Stdio::null())
        .stderr(Stdio::null())
        .status()
        .expect("Failed to clone repo");
    create_test_file(&test_dir.join(file_path), contents);
    Command::new("git")
        .current_dir(&test_dir)
        .args(["add", file_path])
        .stdout(Stdio::null())
        .stderr(Stdio::null())
        .status()
        .expect("Failed to add file to repo");
    Command::new("git")
        .current_dir(&test_dir)
        .args(["-c", "user.name=test", "-c", "user.email=test@example.com", "commit", "-m", "test commit"])
        .stdout(Stdio::null())
        .stderr(Stdio::null())
        .status()
        .expect("Failed to commit file to repo");
    Command::new("git")
        .current_dir(&test_dir)
        .args(["push", "origin", "main"])
        .stdout(Stdio::null())
        .stderr(Stdio::null())
        .status()
        .expect("Failed to push repo");

    cleanup_test_dir(&test_dir);
}

fn random_string() -> String {
    let x = Box::new(0);
    format!("{:p}", x)
}