// file: crates/ksp-logging-lib/unit_tests/settings.rs
// version: 1

#[test]
fn level_variants_are_distinct() {
    assert_ne!(crate::LogFilterLevel::Off, crate::LogFilterLevel::Error);
    assert_ne!(crate::LogFilterLevel::Error, crate::LogFilterLevel::Warn);
    assert_ne!(crate::LogFilterLevel::Warn, crate::LogFilterLevel::Info);
    assert_ne!(crate::LogFilterLevel::Info, crate::LogFilterLevel::Debug);
    assert_ne!(crate::LogFilterLevel::Debug, crate::LogFilterLevel::Trace);
}

#[test]
fn target_filter_preserves_prefix_and_level() {
    let filter = crate::TargetFilter::new("ksp-store-lib", crate::LogFilterLevel::Trace);
    assert_eq!(filter.target_prefix(), "ksp-store-lib");
    assert_eq!(filter.level(), crate::LogFilterLevel::Trace);
}

#[test]
fn console_settings_select_requested_stream() {
    assert_eq!(crate::ConsoleSettings::stdout().output(), crate::ConsoleOutput::Stdout);
    assert_eq!(crate::ConsoleSettings::stderr().output(), crate::ConsoleOutput::Stderr);
}

#[test]
fn file_settings_preserve_values() {
    let settings = crate::FileSettings::new("logs", "ksp", crate::FileRotation::Daily);
    assert_eq!(settings.directory(), std::path::Path::new("logs"));
    assert_eq!(settings.file_name_prefix(), "ksp");
    assert_eq!(settings.rotation(), crate::FileRotation::Daily);
}

#[test]
fn logging_settings_preserve_explicit_values() {
    let settings = crate::LoggingSettings::new(
        crate::LogFilterLevel::Info,
        crate::SpanEvents::NewAndClose,
        std::option::Option::Some(crate::ConsoleSettings::stdout()),
        std::option::Option::Some(crate::FileSettings::new("logs", "ksp", crate::FileRotation::Hourly)),
    )
    .with_target_filter(crate::TargetFilter::new("ksp-store-lib", crate::LogFilterLevel::Trace));
    assert_eq!(settings.default_filter(), crate::LogFilterLevel::Info);
    assert_eq!(settings.span_events(), crate::SpanEvents::NewAndClose);
    assert_eq!(settings.target_filters().len(), 1);
    assert_eq!(settings.target_filters()[0].target_prefix(), "ksp-store-lib");
    assert_eq!(settings.console(), std::option::Option::Some(&crate::ConsoleSettings::stdout()));
    assert_eq!(settings.file().map(crate::FileSettings::rotation), std::option::Option::Some(crate::FileRotation::Hourly));
}

#[test]
fn validation_rejects_empty_target_prefix() {
    let settings = crate::LoggingSettings::new(
        crate::LogFilterLevel::Info,
        crate::SpanEvents::Off,
        std::option::Option::Some(crate::ConsoleSettings::stdout()),
        std::option::Option::None,
    )
    .with_target_filter(crate::TargetFilter::new("", crate::LogFilterLevel::Debug));
    assert!(settings.validate().is_err());
}

#[test]
fn validation_rejects_external_target_prefix() {
    let settings = crate::LoggingSettings::new(
        crate::LogFilterLevel::Info,
        crate::SpanEvents::Off,
        std::option::Option::Some(crate::ConsoleSettings::stdout()),
        std::option::Option::None,
    )
    .with_target_filter(crate::TargetFilter::new("sqlx", crate::LogFilterLevel::Debug));
    assert!(settings.validate().is_err());
}

#[test]
fn validation_rejects_empty_file_prefix() {
    let settings = crate::LoggingSettings::new(
        crate::LogFilterLevel::Info,
        crate::SpanEvents::Off,
        std::option::Option::None,
        std::option::Option::Some(crate::FileSettings::new("logs", "", crate::FileRotation::Never)),
    );
    assert!(settings.validate().is_err());
}

#[test]
fn validation_accepts_ksp_outputs_and_filters() {
    let settings = crate::LoggingSettings::new(
        crate::LogFilterLevel::Info,
        crate::SpanEvents::Full,
        std::option::Option::Some(crate::ConsoleSettings::stderr()),
        std::option::Option::Some(crate::FileSettings::new("logs", "worker", crate::FileRotation::Daily)),
    )
    .with_target_filter(crate::TargetFilter::new("ksp-worker-", crate::LogFilterLevel::Debug));
    assert!(settings.validate().is_ok());
}

#[test]
fn settings_allow_logging_to_be_disabled() {
    let settings = crate::LoggingSettings::new(crate::LogFilterLevel::Off, crate::SpanEvents::Off, std::option::Option::None, std::option::Option::None);
    assert!(settings.validate().is_ok());
}