//! `studio.theme.sunflower` — warm, optimistic Studio theme.
//!
//! Yellow / amber / cream tones designed to feel like working
//! at a sunlit kitchen table. Pairs a saturated amber primary
//! with deep walnut text in light mode; a golden-amber primary
//! over a near-black surface in dark mode.

#![allow(clippy::result_large_err)]

use fai_plugin_sdk::{bindings, export_plugin};

type ColorScheme = bindings::fai::studio_plugin::plugin_types::ColorScheme;
type PluginError = bindings::fai::studio_plugin::plugin_types::PluginError;
type RenderedOutput = bindings::fai::studio_plugin::plugin_types::RenderedOutput;

/// 14 ARGB tokens, Material 3 order. See the SDK docs for
/// the canonical slot ordering.
const SUNFLOWER_LIGHT: [u32; 14] = [
    0xFFFFB300, // primary           — amber 600
    0xFF1B1300, // on_primary        — espresso
    0xFFFF6F00, // secondary         — orange 900
    0xFF1B1300, // on_secondary
    0xFF8BC34A, // tertiary          — leaf green
    0xFF1B2900, // on_tertiary
    0xFFC62828, // error
    0xFFFFFFFF, // on_error
    0xFFFFFAF0, // surface           — floral white
    0xFF2C1F00, // on_surface        — dark walnut
    0xFFFFF3D6, // surface_variant   — light cream
    0xFF6B4F00, // on_surface_variant
    0xFFC9A86B, // outline
    0xFFE6D6A8, // outline_variant
];

const SUNFLOWER_DARK: [u32; 14] = [
    0xFFFFCA28, // primary           — amber 400
    0xFF2C1F00, // on_primary
    0xFFFFA726, // secondary         — orange 400
    0xFF2C1F00, // on_secondary
    0xFFAED581, // tertiary          — light green 300
    0xFF1B2900, // on_tertiary
    0xFFEF5350, // error
    0xFF2C0000, // on_error
    0xFF1F1700, // surface           — deep amber-brown
    0xFFFFE7A8, // on_surface
    0xFF332507, // surface_variant
    0xFFC9A86B, // on_surface_variant
    0xFF806E40, // outline
    0xFF4A3D14, // outline_variant
];

struct SunflowerPlugin;

impl bindings::exports::fai::studio_plugin::theme::Guest for SunflowerPlugin {
    fn theme_for(brightness: String) -> Result<ColorScheme, PluginError> {
        let tokens = match brightness.as_str() {
            "light" => SUNFLOWER_LIGHT.to_vec(),
            "dark" => SUNFLOWER_DARK.to_vec(),
            other => {
                return Err(PluginError::Declined(format!(
                    "sunflower has no scheme for brightness '{other}' \
                     (supported: light, dark)"
                )));
            }
        };
        Ok(ColorScheme { brightness, tokens })
    }
}

impl bindings::exports::fai::studio_plugin::translate::Guest for SunflowerPlugin {
    fn translate(
        _text: String,
        _from_locale: String,
        _to_locale: String,
    ) -> Result<String, PluginError> {
        Err(PluginError::Declined(
            "sunflower is a theme plugin and does not translate".to_string(),
        ))
    }
}

impl bindings::exports::fai::studio_plugin::output_view::Guest for SunflowerPlugin {
    fn render(
        _mime_type: String,
        _data: Vec<u8>,
    ) -> Result<RenderedOutput, PluginError> {
        Err(PluginError::Declined(
            "sunflower is a theme plugin and does not render outputs".to_string(),
        ))
    }
}

export_plugin!(SunflowerPlugin);