use nih_plug::prelude::*;
use nih_plug_egui::EguiState;
use resonance_core::{Focus, Settings};
use std::sync::Arc;
#[derive(Params)]
pub struct FocusParams {
    #[id = "enabled"]
    pub enabled: FloatParam,
    #[id = "frequency"]
    pub frequency: FloatParam,
    #[id = "width"]
    pub width: FloatParam,
    #[id = "sensitivity"]
    pub sensitivity: FloatParam,
}
fn linear(name: &str, v: f32, min: f32, max: f32, unit: &'static str) -> FloatParam {
    FloatParam::new(name, v, FloatRange::Linear { min, max }).with_unit(unit)
}
fn log(name: &str, v: f32, min: f32, max: f32, unit: &'static str) -> FloatParam {
    FloatParam::new(
        name,
        v,
        FloatRange::Skewed {
            min,
            max,
            factor: FloatRange::skew_factor(-2.),
        },
    )
    .with_unit(unit)
}
impl Default for FocusParams {
    fn default() -> Self {
        Self {
            enabled: linear("Enabled", 0., 0., 1., "").with_step_size(1.),
            frequency: log("Frequency", 2000., 20., 20000., " Hz"),
            width: linear("Width", 0.5, 0.05, 2., " oct"),
            sensitivity: linear("Sensitivity", 0., -18., 18., " dB"),
        }
    }
}
#[derive(Params)]
pub struct ResonanceParams {
    #[persist = "editor"]
    pub editor: Arc<EguiState>,
    #[id = "amount"]
    pub amount: FloatParam,
    #[id = "sensitivity"]
    pub sensitivity: FloatParam,
    #[id = "max-cut"]
    pub max_cut: FloatParam,
    #[id = "neighborhood"]
    pub neighborhood: FloatParam,
    #[id = "cut-width"]
    pub cut_width: FloatParam,
    #[id = "knee"]
    pub knee: FloatParam,
    #[id = "attack"]
    pub attack: FloatParam,
    #[id = "release"]
    pub release: FloatParam,
    #[id = "transient-guard"]
    pub transient_guard: FloatParam,
    #[id = "low"]
    pub low: FloatParam,
    #[id = "high"]
    pub high: FloatParam,
    #[id = "mix"]
    pub mix: FloatParam,
    #[id = "output"]
    pub output: FloatParam,
    #[id = "bypass"]
    pub bypass: BoolParam,
    #[nested(array, group = "Focus")]
    pub focus: [FocusParams; 4],
}
impl Default for ResonanceParams {
    fn default() -> Self {
        Self {
            editor: EguiState::from_size(1180, 760),
            amount: linear("Amount", 35., 0., 100., " %"),
            sensitivity: linear("Sensitivity", 6., 0., 24., " dB"),
            max_cut: linear("Max cut", 3., 0., 18., " dB"),
            neighborhood: linear("Neighborhood", 1., 0.25, 2., " oct"),
            cut_width: linear("Cut width", 0.08, 0.03, 0.5, " oct"),
            knee: linear("Knee", 3., 0., 12., " dB"),
            attack: log("Attack", 15., 1., 200., " ms"),
            release: log("Release", 120., 10., 1000., " ms"),
            transient_guard: linear("Transient guard", 50., 0., 100., " %"),
            low: log("Low frequency", 120., 20., 19999., " Hz"),
            high: log("High frequency", 12000., 21., 20000., " Hz"),
            mix: linear("Mix", 100., 0., 100., " %"),
            output: linear("Output", 0., -12., 12., " dB"),
            bypass: BoolParam::new("Bypass", false).make_bypass(),
            focus: std::array::from_fn(|_| FocusParams::default()),
        }
    }
}
impl ResonanceParams {
    pub fn floats(&self) -> [&FloatParam; 29] {
        [
            &self.amount,
            &self.sensitivity,
            &self.max_cut,
            &self.neighborhood,
            &self.cut_width,
            &self.knee,
            &self.attack,
            &self.release,
            &self.transient_guard,
            &self.low,
            &self.high,
            &self.mix,
            &self.output,
            &self.focus[0].enabled,
            &self.focus[0].frequency,
            &self.focus[0].width,
            &self.focus[0].sensitivity,
            &self.focus[1].enabled,
            &self.focus[1].frequency,
            &self.focus[1].width,
            &self.focus[1].sensitivity,
            &self.focus[2].enabled,
            &self.focus[2].frequency,
            &self.focus[2].width,
            &self.focus[2].sensitivity,
            &self.focus[3].enabled,
            &self.focus[3].frequency,
            &self.focus[3].width,
            &self.focus[3].sensitivity,
        ]
    }
    pub fn settings(&self) -> Settings {
        let mut s = Settings {
            amount: self.amount.value(),
            sensitivity: self.sensitivity.value(),
            max_cut: self.max_cut.value(),
            neighborhood: self.neighborhood.value(),
            cut_width: self.cut_width.value(),
            knee: self.knee.value(),
            attack: self.attack.value(),
            release: self.release.value(),
            transient_guard: self.transient_guard.value(),
            low: self.low.value(),
            high: self.high.value(),
            mix: self.mix.value(),
            output: self.output.value(),
            bypass: self.bypass.value(),
            focus: std::array::from_fn(|i| Focus {
                enabled: self.focus[i].enabled.value() >= 0.5,
                frequency: self.focus[i].frequency.value(),
                width: self.focus[i].width.value(),
                sensitivity: self.focus[i].sensitivity.value(),
            }),
        };
        // Independent automation of bounds may cross them; preserve a valid effective range.
        if s.low >= s.high {
            s.low = (s.high - 1.).max(20.);
        }
        s
    }
}
pub fn values(s: &Settings) -> [f32; 29] {
    let mut v = [0.; 29];
    v[..13].copy_from_slice(&[
        s.amount,
        s.sensitivity,
        s.max_cut,
        s.neighborhood,
        s.cut_width,
        s.knee,
        s.attack,
        s.release,
        s.transient_guard,
        s.low,
        s.high,
        s.mix,
        s.output,
    ]);
    for i in 0..4 {
        v[13 + i * 4..17 + i * 4].copy_from_slice(&[
            f32::from(s.focus[i].enabled),
            s.focus[i].frequency,
            s.focus[i].width,
            s.focus[i].sensitivity,
        ]);
    }
    v
}