use assert_fs::fixture::TempDir;
use assert_fs::prelude::*;
use port_check::free_local_port;
use rstest::fixture;

/// Error type used by tests
pub type Error = Box<dyn std::error::Error>;

/// File names for testing purpose
#[allow(dead_code)]
pub static FILES: &[&str] = &[
    "test.txt",
    "test.html",
    "test.mkv",
    #[cfg(not(windows))]
    "test \" \' & < >.csv",
    "😀.data",
    "⎙.mp4",
    "#[]{}()@!$&'`+,;= %20.test",
    #[cfg(unix)]
    ":?#[]{}<>()@!$&'`|*+,;= %20.test",
];

/// Hidden files for testing purpose
#[allow(dead_code)]
pub static HIDDEN_FILES: &[&str] = &[".hidden_file1", ".hidden_file2"];

/// Directory names for testing purpose
#[allow(dead_code)]
pub static DIRECTORIES: &[&str] = &["dira/", "dirb/", "dirc/"];

/// Hidden directories for testing purpose
#[allow(dead_code)]
pub static HIDDEN_DIRECTORIES: &[&str] = &[".hidden_dir1/", ".hidden_dir2/"];

/// Name of a deeply nested file
#[allow(dead_code)]
pub static DEEPLY_NESTED_FILE: &str = "very/deeply/nested/test.rs";

/// Test fixture which creates a temporary directory with a few files and directories inside.
/// The directories also contain files.
#[fixture]
#[allow(dead_code)]
pub fn tmpdir() -> TempDir {
    let tmpdir = assert_fs::TempDir::new().expect("Couldn't create a temp dir for tests");
    let mut files = FILES.to_vec();
    files.extend_from_slice(HIDDEN_FILES);
    for file in &files {
        tmpdir
            .child(file)
            .write_str("Test Hello Yes")
            .expect("Couldn't write to file");
    }

    let mut directories = DIRECTORIES.to_vec();
    directories.extend_from_slice(HIDDEN_DIRECTORIES);
    for directory in directories {
        for file in &files {
            tmpdir
                .child(format!("{}{}", directory, file))
                .write_str(&format!("This is {}{}", directory, file))
                .expect("Couldn't write to file");
        }
    }

    tmpdir
        .child(&DEEPLY_NESTED_FILE)
        .write_str("File in a deeply nested directory.")
        .expect("Couldn't write to file");
    tmpdir
}

/// Get a free port.
#[fixture]
#[allow(dead_code)]
pub fn port() -> u16 {
    free_local_port().expect("Couldn't find a free local port")
}