// file: crates/ksp-app-config-desk/src/dto_common.rs
// version: 2

//! Common Tauri DTOs shared by Config Desk commands.

use ts_rs::TS; // rust-rules: trait-import

/// Safe command error projection that never serializes arbitrary KSP error context or source values.
#[derive(Clone, Debug, serde::Serialize, TS)]
#[serde(rename_all = "camelCase")]
#[ts(export, export_to = "../frontend/ts/bindings/ksp_app_config_desk/dto_common/CommandErrorDto.ts")]
pub(crate) struct CommandErrorDto {
    /// Stable KSP error domain.
    pub(crate) domain: String,
    /// Stable KSP error code within the domain.
    pub(crate) code: String,
    /// Human-readable error message without arbitrary context fields.
    pub(crate) message: String,
}

impl CommandErrorDto {
    /// Builds a bounded safe projection from a KSP error.
    #[must_use]
    pub(crate) fn from_error(error: &ksp_core_lib::Error) -> Self {
        return Self {
            domain: error.code().domain().to_owned(),
            code: error.code().code().to_owned(),
            message: error.message().to_owned(),
        };
    }
}

/// Initial application/runtime snapshot exposed to the frontend.
#[derive(Clone, Debug, serde::Serialize, TS)]
#[serde(rename_all = "camelCase")]
#[ts(export, export_to = "../frontend/ts/bindings/ksp_app_config_desk/dto_common/AppSnapshotDto.ts")]
pub(crate) struct AppSnapshotDto {
    /// Cargo application version.
    pub(crate) application_version: String,
    /// Number of files registered by the Config registry.
    pub(crate) config_document_count: u32,
    /// Active configured Logging profile, or `None` while the transient fallback runtime is active.
    pub(crate) active_logging_profile: std::option::Option<String>,
    /// Monotonic runtime generation, initialized to one after the first Logging runtime install.
    pub(crate) logging_generation: u32,
    /// Whether Config Desk had to install its transient in-memory Logging fallback.
    pub(crate) fallback_logging_active: bool,
    /// Safe startup diagnostic that caused fallback Logging, when applicable.
    pub(crate) startup_diagnostic: std::option::Option<CommandErrorDto>,
}

#[cfg(test)]
#[path = "../unit_tests/dto_common.rs"]
mod tests;