use std::process::Command;
use tempfile::TempDir;

fn arc_cmd() -> Command {
    let mut cmd = Command::new(env!("CARGO_BIN_EXE_arc"));
    cmd.env("NO_COLOR", "1");
    cmd
}

fn init_repo() -> TempDir {
    let dir = TempDir::new().unwrap();
    arc_cmd()
        .arg("init")
        .current_dir(dir.path())
        .output()
        .expect("failed to init");
    dir
}

#[test]
fn status_clean_after_init() {
    let dir = init_repo();

    let output = arc_cmd()
        .arg("status")
        .current_dir(dir.path())
        .output()
        .expect("failed to run arc");

    assert!(output.status.success());
    let stdout = String::from_utf8_lossy(&output.stdout);
    assert!(stdout.contains("working tree clean"));
}

#[test]
fn status_shows_added_files() {
    let dir = init_repo();
    std::fs::write(dir.path().join("new.txt"), "new content\n").unwrap();

    let output = arc_cmd()
        .arg("status")
        .current_dir(dir.path())
        .output()
        .expect("failed to run arc");

    assert!(output.status.success());
    let stdout = String::from_utf8_lossy(&output.stdout);
    assert!(stdout.contains("added:"));
    assert!(stdout.contains("new.txt"));
}

#[test]
fn status_shows_modified_files() {
    let dir = init_repo();
    std::fs::write(dir.path().join("file.txt"), "original\n").unwrap();

    arc_cmd()
        .args(["commit", "add file"])
        .current_dir(dir.path())
        .output()
        .expect("failed");

    std::fs::write(dir.path().join("file.txt"), "modified\n").unwrap();

    let output = arc_cmd()
        .arg("status")
        .current_dir(dir.path())
        .output()
        .expect("failed");

    assert!(output.status.success());
    let stdout = String::from_utf8_lossy(&output.stdout);
    assert!(stdout.contains("modified:"));
    assert!(stdout.contains("file.txt"));
}

#[test]
fn status_shows_deleted_files() {
    let dir = init_repo();
    std::fs::write(dir.path().join("gone.txt"), "will be deleted\n").unwrap();

    arc_cmd()
        .args(["commit", "add file"])
        .current_dir(dir.path())
        .output()
        .expect("failed");

    std::fs::remove_file(dir.path().join("gone.txt")).unwrap();

    let output = arc_cmd()
        .arg("status")
        .current_dir(dir.path())
        .output()
        .expect("failed");

    assert!(output.status.success());
    let stdout = String::from_utf8_lossy(&output.stdout);
    assert!(stdout.contains("deleted:"));
    assert!(stdout.contains("gone.txt"));
}

#[test]
fn status_clean_after_commit() {
    let dir = init_repo();
    std::fs::write(dir.path().join("file.txt"), "content\n").unwrap();

    arc_cmd()
        .args(["commit", "add file"])
        .current_dir(dir.path())
        .output()
        .expect("failed");

    let output = arc_cmd()
        .arg("status")
        .current_dir(dir.path())
        .output()
        .expect("failed");

    assert!(output.status.success());
    let stdout = String::from_utf8_lossy(&output.stdout);
    assert!(stdout.contains("working tree clean"));
}

#[test]
fn status_outside_repo_fails() {
    let dir = TempDir::new().unwrap();

    let output = arc_cmd()
        .arg("status")
        .current_dir(dir.path())
        .output()
        .expect("failed");

    assert!(!output.status.success());
}

#[test]
fn status_ignores_arcignore_patterns() {
    let dir = init_repo();
    std::fs::write(dir.path().join(".arcignore"), "*.log\n").unwrap();
    std::fs::write(dir.path().join("debug.log"), "log data\n").unwrap();

    let output = arc_cmd()
        .arg("status")
        .current_dir(dir.path())
        .output()
        .expect("failed");

    assert!(output.status.success());
    let stdout = String::from_utf8_lossy(&output.stdout);
    assert!(!stdout.contains("debug.log"));
}

#[test]
fn status_shows_multiple_changes() {
    let dir = init_repo();
    std::fs::write(dir.path().join("keep.txt"), "keep\n").unwrap();
    std::fs::write(dir.path().join("modify.txt"), "old\n").unwrap();
    std::fs::write(dir.path().join("delete.txt"), "gone\n").unwrap();

    arc_cmd()
        .args(["commit", "initial"])
        .current_dir(dir.path())
        .output()
        .expect("failed");

    std::fs::write(dir.path().join("modify.txt"), "new\n").unwrap();
    std::fs::remove_file(dir.path().join("delete.txt")).unwrap();
    std::fs::write(dir.path().join("added.txt"), "new file\n").unwrap();

    let output = arc_cmd()
        .arg("status")
        .current_dir(dir.path())
        .output()
        .expect("failed");

    assert!(output.status.success());
    let stdout = String::from_utf8_lossy(&output.stdout);
    assert!(stdout.contains("added:"));
    assert!(stdout.contains("added.txt"));
    assert!(stdout.contains("modified:"));
    assert!(stdout.contains("modify.txt"));
    assert!(stdout.contains("deleted:"));
    assert!(stdout.contains("delete.txt"));
}