mod integrated_test {
    use std::{
        fs::{DirBuilder, File},
        io::{self, BufWriter, Write},
    };

    use anyhow::{Context, Ok, Result};
    use assert_cmd::{assert::OutputAssertExt, cargo::CommandCargoExt, Command};
    use dirs::home_dir;
    use git2::Repository;
    use log::trace;
    use predicates::{boolean::PredicateBooleanExt, prelude::predicate};

    /// Setup global gitconfig if it doesn't exist.
    ///
    /// # Errors
    ///
    /// This function will return an error if it failed to get home directory.
    fn setup_gitconfig() -> Result<()> {
        let f = match File::create_new(
            home_dir()
                .context("Failed to find home directory")?
                .join(".gitconfig"),
        ) {
            io::Result::Ok(f) => f,
            io::Result::Err(_err) => return Ok(()),
        };
        let mut buf = BufWriter::new(f);
        buf.write_all(
            r#"
[user]
        email = "test@example.com"
        name = "testuser"
"#
            .as_bytes(),
        )?;

        Ok(())
    }

    #[test]
    fn single_device() -> Result<()> {
        let config_dir = assert_fs::TempDir::new()?;
        setup_gitconfig()?;
        // init
        let mut cmd = Command::cargo_bin("xdbm")?;
        cmd.arg("-c")
            .arg(config_dir.path())
            .arg("init")
            .arg("testdev");
        cmd.assert().success().stdout(predicate::str::contains(""));
        assert_eq!(
            std::fs::read_to_string(config_dir.path().join("devname"))?,
            "testdev\n"
        );

        // storage add
        let storage = assert_fs::TempDir::new()?;
        Command::cargo_bin("xdbm")?
            .arg("-c")
            .arg(config_dir.path())
            .arg("storage")
            .arg("add")
            .arg("online")
            .arg("--provider")
            .arg("sample_provider")
            .arg("--capacity")
            .arg("1000000000000")
            .arg("--alias")
            .arg("alias")
            .arg("online_storage")
            .arg(storage.path())
            .assert()
            .success();

        // storage list
        Command::cargo_bin("xdbm")?
            .arg("-c")
            .arg(config_dir.path())
            .arg("storage")
            .arg("list")
            .assert()
            .success()
            .stdout(predicate::str::contains("online_storage"));

        // backup add
        let target_from = storage.join("foo/bar");
        let target_to = storage.join("aaa/bbb/ccc");
        DirBuilder::new()
            .recursive(true)
            .create(target_from.clone())?;
        DirBuilder::new()
            .recursive(true)
            .create(target_to.clone())?;
        Command::cargo_bin("xdbm")?
            .arg("-c")
            .arg(config_dir.path())
            .arg("backup")
            .arg("add")
            .arg("--src")
            .arg(target_from)
            .arg("--dest")
            .arg(target_to)
            .arg("sample_backup")
            .arg("external")
            .arg("rsync")
            .arg("with some note")
            .assert()
            .success();

        // backup list
        Command::cargo_bin("xdbm")?
            .arg("-c")
            .arg(config_dir.path())
            .arg("backup")
            .arg("list")
            .assert()
            .success()
            .stdout(predicate::str::contains("sample_backup"));

        Command::cargo_bin("xdbm")?
            .arg("-c")
            .arg(config_dir.path())
            .arg("backup")
            .arg("done")
            .arg("sample_backup")
            .arg("0")
            .assert()
            .success();

        Ok(())
    }

    #[test]
    fn two_devices_with_same_name() -> Result<()> {
        // 1st device
        let config_dir_1 = assert_fs::TempDir::new()?;
        setup_gitconfig()?;
        let mut cmd1 = Command::cargo_bin("xdbm")?;
        cmd1.arg("-c")
            .arg(config_dir_1.path())
            .arg("init")
            .arg("first");
        cmd1.assert().success().stdout(predicate::str::contains(""));

        // bare-repo
        let bare_repo_dir = assert_fs::TempDir::new()?;
        let bare_repo = Repository::init_bare(&bare_repo_dir)?;
        // push to bare repository
        let repo_1 = Repository::open(&config_dir_1)?;
        let upstream_name = "remote";
        let mut repo_1_remote =
            repo_1.remote(upstream_name, bare_repo_dir.path().to_str().unwrap())?;
        repo_1_remote.push(&[repo_1.head().unwrap().name().unwrap()], None)?;
        trace!("bare repo {:?}", bare_repo_dir.display());
        println!("{:?}", bare_repo_dir.read_dir()?);
        // set up upstream branch
        let (mut repo_1_branch, _branch_type) = repo_1.branches(None)?.next().unwrap()?;
        println!("head {}", repo_1.head().unwrap().name().unwrap());
        repo_1_branch.set_upstream(Some(
            format!(
                "{}/{}",
                upstream_name,
                repo_1_branch.name().unwrap().unwrap()
            )
            .as_str(),
        ))?;

        // 2nd device
        let config_dir_2 = assert_fs::TempDir::new()?;
        setup_gitconfig()?;
        let mut cmd2 = Command::cargo_bin("xdbm")?;
        cmd2.arg("-c")
            .arg(config_dir_2.path())
            .arg("init")
            .arg("first")
            .arg("-r")
            .arg(bare_repo_dir.path());
        cmd2.assert().failure();
        Ok(())
    }

    #[test]
    fn directory_without_parent() -> Result<()> {
        // 1st device
        let config_dir_1 = assert_fs::TempDir::new()?;
        setup_gitconfig()?;
        let mut cmd1 = Command::cargo_bin("xdbm")?;
        cmd1.arg("-c")
            .arg(config_dir_1.path())
            .arg("init")
            .arg("first");
        cmd1.assert().success().stdout(predicate::str::contains(""));

        // add storage
        let sample_storage = assert_fs::TempDir::new()?;
        let mut cmd_add_storage = Command::cargo_bin("xdbm")?;
        cmd_add_storage
            .arg("-c")
            .arg(config_dir_1.path())
            .arg("storage")
            .arg("add")
            .arg("directory")
            .arg("--alias")
            .arg("gdrive")
            .arg("gdrive")
            .arg(sample_storage.path());
        cmd_add_storage
            .assert()
            .failure()
            .stderr(predicate::str::contains("No storages found"));

        Ok(())
    }

    #[test]
    fn two_devices() -> Result<()> {
        // 1st device
        let config_dir_1 = assert_fs::TempDir::new()?;
        setup_gitconfig()?;
        let mut cmd1 = Command::cargo_bin("xdbm")?;
        cmd1.arg("-c")
            .arg(config_dir_1.path())
            .arg("init")
            .arg("first");
        cmd1.assert().success().stdout(predicate::str::contains(""));

        // bare-repo
        let bare_repo_dir = assert_fs::TempDir::new()?;
        let bare_repo = Repository::init_bare(&bare_repo_dir)?;
        // push to bare repository
        let repo_1 = Repository::open(&config_dir_1)?;
        let upstream_name = "remote";
        let mut repo_1_remote =
            repo_1.remote(upstream_name, bare_repo_dir.path().to_str().unwrap())?;
        repo_1_remote.push(&[repo_1.head().unwrap().name().unwrap()], None)?;
        trace!("bare repo {:?}", bare_repo_dir.display());
        println!("{:?}", bare_repo_dir.read_dir()?);
        // set up upstream branch
        let (mut repo_1_branch, _branch_type) = repo_1.branches(None)?.next().unwrap()?;
        repo_1_branch.set_upstream(Some(
            format!(
                "{}/{}",
                upstream_name,
                repo_1_branch.name().unwrap().unwrap()
            )
            .as_str(),
        ))?;

        // 2nd device
        let config_dir_2 = assert_fs::TempDir::new()?;
        let mut cmd2 = Command::cargo_bin("xdbm")?;
        cmd2.arg("-c")
            .arg(config_dir_2.path())
            .arg("init")
            .arg("second")
            .arg("-r")
            .arg(bare_repo_dir.path());
        cmd2.assert().success().stdout(predicate::str::contains(""));

        assert_eq!(
            std::fs::read_to_string(config_dir_2.path().join("devname"))?,
            "second\n"
        );
        assert!(
            std::fs::read_to_string(config_dir_2.path().join("devices.yml"))?.contains("first")
        );
        assert!(
            std::fs::read_to_string(config_dir_2.path().join("devices.yml"))?.contains("second")
        );
        assert!(config_dir_2.join("backups").join("first.yml").exists());
        assert!(config_dir_2.join("backups").join("second.yml").exists());

        std::process::Command::new("git")
            .arg("push")
            .current_dir(&config_dir_2)
            .assert()
            .success();
        // let repo_2 = Repository::open(config_dir_2)?;
        // // return Err(anyhow!("{:?}", repo_2.remotes()?.iter().collect::<Vec<_>>()));
        // let mut repo_2_remote = repo_2.find_remote(repo_2.remotes()?.get(0).unwrap())?;
        // repo_2_remote.push(&[] as &[&str], None)?;
        std::process::Command::new("git")
            .arg("pull")
            .current_dir(&config_dir_1)
            .assert()
            .success();

        // Add storage
        let sample_storage = assert_fs::TempDir::new()?;
        let mut cmd_add_storage_1 = Command::cargo_bin("xdbm")?;
        cmd_add_storage_1
            .arg("-c")
            .arg(config_dir_1.path())
            .arg("storage")
            .arg("add")
            .arg("online")
            .arg("--provider")
            .arg("google")
            .arg("--capacity")
            .arg("15000000000")
            .arg("--alias")
            .arg("gdrive")
            .arg("gdrive1")
            .arg(sample_storage.path());
        cmd_add_storage_1
            .assert()
            .success()
            .stdout(predicate::str::contains(""));
        // Add storage (directory)
        let sample_directory = &sample_storage.join("foo").join("bar");
        DirBuilder::new().recursive(true).create(sample_directory)?;
        Command::cargo_bin("xdbm")?
            .arg("-c")
            .arg(config_dir_1.path())
            .arg("storage")
            .arg("add")
            .arg("directory")
            .arg("--alias")
            .arg("docs")
            .arg("gdrive_docs")
            .arg(sample_directory)
            .assert()
            .success()
            .stdout(predicate::str::contains(""));
        assert!(
            std::fs::read_to_string(config_dir_1.join("storages.yml"))?.contains("parent: gdrive1")
        );

        std::process::Command::new("git")
            .arg("push")
            .current_dir(&config_dir_1)
            .assert()
            .success();
        std::process::Command::new("git")
            .arg("pull")
            .current_dir(&config_dir_2)
            .assert()
            .success();

        // bind
        Command::cargo_bin("xdbm")?
            .arg("-c")
            .arg(config_dir_2.path())
            .arg("storage")
            .arg("bind")
            .arg("--alias")
            .arg("gdocs")
            .arg("--path")
            .arg(sample_directory)
            .arg("gdrive_docs")
            .assert()
            .success()
            .stdout(predicate::str::contains(""));

        // storage 3
        let sample_storage_2 = assert_fs::TempDir::new()?;
        Command::cargo_bin("xdbm")?
            .arg("-c")
            .arg(config_dir_2.path())
            .arg("storage")
            .arg("add")
            .arg("online")
            .arg("--provider")
            .arg("me")
            .arg("--capacity")
            .arg("1000000000000")
            .arg("--alias")
            .arg("nas")
            .arg("nas")
            .arg(sample_storage_2.path())
            .assert()
            .success();

        // storage list
        Command::cargo_bin("xdbm")?
            .arg("-c")
            .arg(config_dir_2.path())
            .arg("storage")
            .arg("list")
            .arg("-l")
            .assert()
            .success()
            .stdout(predicate::str::contains("gdrive_docs").and(predicate::str::contains("nas")));

        // backup add
        let backup_src = &sample_storage_2.join("foo").join("bar");
        DirBuilder::new().recursive(true).create(backup_src)?;
        let backup_dest = &sample_directory.join("docs");
        DirBuilder::new().recursive(true).create(backup_dest)?;
        Command::cargo_bin("xdbm")?
            .arg("-c")
            .arg(config_dir_2.path())
            .arg("backup")
            .arg("add")
            .arg("--src")
            .arg(backup_src)
            .arg("--dest")
            .arg(backup_dest)
            .arg("foodoc")
            .arg("external")
            .arg("rsync")
            .arg("note: nonsense")
            .assert()
            .success();

        // backup add but with existing name
        Command::cargo_bin("xdbm")?
            .arg("-c")
            .arg(config_dir_2.path())
            .arg("backup")
            .arg("add")
            .arg("--src")
            .arg(backup_src)
            .arg("--dest")
            .arg(backup_dest)
            .arg("foodoc")
            .arg("external")
            .arg("rsync")
            .arg("note: nonsense")
            .assert()
            .failure()
            .stderr(predicate::str::contains("already"));

        // backup list
        Command::cargo_bin("xdbm")?
            .arg("-c")
            .arg(config_dir_2.path())
            .arg("backup")
            .arg("list")
            .assert()
            .success()
            .stdout(
                predicate::str::contains("foodoc")
                    .and(predicate::str::contains("nas"))
                    .and(predicate::str::contains("gdrive_docs"))
                    .and(predicate::str::contains("---")),
            );

        // backup done
        Command::cargo_bin("xdbm")?
            .arg("-c")
            .arg(config_dir_2.path())
            .arg("backup")
            .arg("done")
            .arg("foodoc")
            .arg("0")
            .assert()
            .success();

        Ok(())
    }
}