use std::f64::consts::TAU;

use ranim::utils::rate_functions::smooth;
use ranim::{color::palettes::manim, glam::DVec3, prelude::*};
use ranim_anims::{
    creation::{CreationAnim, WritingAnim},
    lagged::LaggedAnim,
    rotating::RotatingAnim,
};
use ranim_items::vitem::{VItem, text::TextItem};

#[scene]
#[output(dir = "./output/text_item")]
fn text_item(r: &mut RanimScene) {
    let text = "The quick brown fox jumps over the lazy dog.";

    let text = TextItem::new(text, 0.5).with(|item| item.move_to(DVec3::ZERO).discard());
    let text_box = text
        .text_box()
        .with(|item| item.set_stroke_color(manim::RED_C).discard());

    let mut text_sequence = seq![Vec::<VItem>::from(text.clone()).lagged(0.1, |item| {
        let animation = item.write();
        move |alpha| animation.eval_alpha(smooth(alpha))
    })];
    text_sequence
        .hold(3.0)
        .push(
            text.clone()
                .rotating(TAU * 4.0, DVec3::Z)
                .with_duration(4.0)
                .with_rate_func(smooth),
        )
        .hold(1.0)
        .push(Vec::<VItem>::from(text.clone()).lagged(0.1, |item| {
            let animation = item.unwrite();
            move |alpha| animation.eval_alpha(smooth(alpha))
        }))
        .hold(1.0);

    let mut box_sequence = AnimSequence::new();
    box_sequence
        .forward(1.0)
        .push(
            VItem::from(text_box.clone())
                .create()
                .with_rate_func(smooth),
        )
        .push(VItem::from(text_box).uncreate().with_rate_func(smooth));

    let total_secs = text_sequence.cursor_sec().max(box_sequence.cursor_sec());
    r.play(CameraFrame::default().show().with_duration(total_secs));
    r.play(stack![text_sequence, box_sequence]);

    r.insert_time_mark(
        total_secs / 2.0,
        TimeMark::Capture("preview.png".to_string()),
    );
}