use cli::Environment;
use cli::config::Config;
use cli::parse_secret_pairs;
use cli::store::Store;
use cli::store::sqlite::SqliteStore;
use diesel::connection::SimpleConnection;
use diesel::{Connection, SqliteConnection};
use std::path::PathBuf;
use std::sync::{Mutex, OnceLock};
use uuid::Uuid;

fn test_lock() -> &'static Mutex<()> {
    static LOCK: OnceLock<Mutex<()>> = OnceLock::new();
    LOCK.get_or_init(|| Mutex::new(()))
}

fn setup_test_db() -> PathBuf {
    let db_path = std::env::temp_dir().join(format!("harbor_test_{}.db", Uuid::new_v4()));
    std::fs::File::create(&db_path).expect("create sqlite file");

    unsafe {
        std::env::set_var("DATABASE_URL", &db_path);
    }

    let database_url = db_path.to_str().expect("db path");
    let mut conn = SqliteConnection::establish(database_url).expect("connect sqlite");
    conn.batch_execute(
        "PRAGMA foreign_keys = ON;\
        CREATE TABLE projects (\
            id TEXT PRIMARY KEY NOT NULL,\
            name TEXT NOT NULL UNIQUE,\
            created_at TIMESTAMP NOT NULL\
        );\
        CREATE TABLE secrets (\
            id TEXT PRIMARY KEY NOT NULL DEFAULT (lower(hex(randomblob(16)))),\
            name TEXT NOT NULL,\
            project_id TEXT NOT NULL,\
            config TEXT NOT NULL,\
            secret BLOB NOT NULL,\
            nonce BLOB NOT NULL,\
            created_at TIMESTAMP NOT NULL,\
            FOREIGN KEY(project_id) REFERENCES projects(id)\
        );",
    )
    .expect("create schema");

    db_path
}

fn cleanup_test_db(path: PathBuf) {
    let _ = std::fs::remove_file(path);
}

#[test]
fn environment_parsing_and_display() {
    let dev: Environment = "DEV".parse().expect("parse dev");
    let staging: Environment = " staging ".parse().expect("parse staging");

    assert_eq!(dev, Environment::Dev);
    assert_eq!(staging, Environment::Staging);
    assert_eq!(format!("{}", Environment::Prod), "prod");

    let err = "unknown".parse::<Environment>().unwrap_err();
    assert_eq!(
        err.to_string(),
        "Environment must be one of: dev, prod, staging"
    );
}

#[test]
fn parse_secret_pairs_handles_valid_and_invalid_input() {
    let input = vec![
        " FOO=bar ".to_string(),
        "".to_string(),
        "BAZ=qux".to_string(),
        "A=B=C".to_string(),
    ];

    let parsed = parse_secret_pairs(&input).expect("parse secret pairs");
    assert_eq!(parsed.len(), 3);
    assert_eq!(parsed[0], ("FOO".to_string(), "bar".to_string()));
    assert_eq!(parsed[1], ("BAZ".to_string(), "qux".to_string()));
    assert_eq!(parsed[2], ("A".to_string(), "B=C".to_string()));

    let err = parse_secret_pairs(&["NOPE".to_string()]).unwrap_err();
    assert_eq!(err.to_string(), "Invalid secret format: NOPE");

    let err = parse_secret_pairs(&["=value".to_string()]).unwrap_err();
    assert_eq!(err.to_string(), "Secret key cannot be empty");
}

#[test]
fn config_reads_valid_file_and_reports_errors() {
    let temp_root = std::env::temp_dir().join(format!("harbor_config_{}", Uuid::new_v4()));
    std::fs::create_dir_all(&temp_root).expect("create temp dir");

    let config_path = temp_root.join(".harbor.toml");
    std::fs::write(
        &config_path,
        "version = \"1\"\nname = \"proj\"\nconfig = \"dev\"\n",
    )
    .expect("write config");

    let config = Config::from_repo_root(&temp_root).expect("read config");
    assert_eq!(config.name, "proj");
    assert_eq!(config.version, "1");
    assert_eq!(config.default_env, Environment::Dev);

    let invalid_path = temp_root.join("bad.toml");
    std::fs::write(&invalid_path, "not = [valid").expect("write invalid");
    let err = Config::read_main_file(&invalid_path).unwrap_err();
    assert!(err.to_string().contains("TOML error"));

    let missing_path = temp_root.join("missing.toml");
    let err = Config::read_main_file(&missing_path).unwrap_err();
    assert!(err.to_string().contains("IO error"));

    let _ = std::fs::remove_dir_all(&temp_root);
}

#[test]
fn project_and_secret_lifecycle() {
    let _guard = test_lock().lock().expect("lock tests");
    let db_path = setup_test_db();
    let store = SqliteStore::new(String::new());

    assert!(!store.project_exists("alpha").expect("project exists"));

    store.create_project("alpha").expect("create project");
    assert!(store.project_exists("alpha").expect("project exists"));

    let project_id = store.get_project_id("alpha").expect("get project id");
    let projects = store.get_projects().expect("get projects");
    assert_eq!(projects.len(), 1);
    assert_eq!(projects[0].name, "alpha");

    assert!(
        !store
            .secret_exists(&project_id, "API_KEY", Environment::Dev)
            .expect("secret exists")
    );

    let nonce = crypto::helper::gen_nonce();
    store
        .set_secret(
            &project_id,
            "API_KEY",
            b"first".to_vec(),
            Environment::Dev,
            nonce,
        )
        .expect("set secret");

    assert!(
        store
            .secret_exists(&project_id, "API_KEY", Environment::Dev)
            .expect("secret exists")
    );

    let secrets = store
        .get_project_secrets(&project_id, Environment::Dev)
        .expect("get secrets");
    assert_eq!(secrets.len(), 1);
    assert_eq!(secrets[0].0, "API_KEY");
    assert_eq!(secrets[0].1, b"first".to_vec());

    let nonce = crypto::helper::gen_nonce();
    store
        .set_secret(
            &project_id,
            "API_KEY",
            b"second".to_vec(),
            Environment::Dev,
            nonce,
        )
        .expect("update secret");

    let updated = store
        .get_project_secrets(&project_id, Environment::Dev)
        .expect("get secrets");
    assert_eq!(updated.len(), 1);
    assert_eq!(updated[0].1, b"second".to_vec());

    store
        .delete_secret(&project_id, "API_KEY", Environment::Dev)
        .expect("delete secret");
    assert!(
        !store
            .secret_exists(&project_id, "API_KEY", Environment::Dev)
            .expect("secret exists")
    );

    store.delete_project("alpha").expect("delete project");
    assert!(!store.project_exists("alpha").expect("project exists"));

    cleanup_test_db(db_path);
}

#[test]
fn errors_for_missing_project_or_secret() {
    let _guard = test_lock().lock().expect("lock tests");
    let db_path = setup_test_db();
    let store = SqliteStore::new(String::new());

    let err = store.delete_project("missing").unwrap_err();
    assert_eq!(err.to_string(), "Project does not exist");

    let err = store.get_project_id("missing").unwrap_err();
    assert_eq!(err.to_string(), "Project not found");

    let missing_project_id = Uuid::new_v4().to_string();
    let err = store
        .delete_secret(&missing_project_id, "missing", Environment::Dev)
        .unwrap_err();
    assert_eq!(err.to_string(), "Secret does not exist");

    cleanup_test_db(db_path);
}