use crate::application::theme_service;
use crate::infrastructure::theme_repository::StaticThemeRepository;
use serde::Serialize;

#[derive(Serialize)]
pub struct ThemeDto {
    pub id: String,
    pub label: String,
}

#[tauri::command]
pub fn list_themes() -> Vec<ThemeDto> {
    let repo = StaticThemeRepository;
    theme_service::list_themes(&repo)
        .into_iter()
        .map(|t| ThemeDto { id: t.id, label: t.label })
        .collect()
}

#[tauri::command]
pub fn get_theme_css(id: String) -> Option<String> {
    let repo = StaticThemeRepository;
    theme_service::get_theme_css(&repo, &id)
}

#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    fn list_themes_returns_non_empty() {
        let themes = list_themes();
        assert!(!themes.is_empty());
    }

    #[test]
    fn list_themes_ids_are_non_empty() {
        for theme in list_themes() {
            assert!(!theme.id.is_empty());
            assert!(!theme.label.is_empty());
        }
    }

    #[test]
    fn get_theme_css_known() {
        assert!(get_theme_css("dark".into()).is_some());
        assert!(get_theme_css("shell-indigo".into()).is_some());
    }

    #[test]
    fn get_theme_css_unknown_returns_none() {
        assert!(get_theme_css("does-not-exist".into()).is_none());
    }
}