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use async_trait::async_trait;
use hhmmss::Hhmmss;

use crate::bakedexpression::BakedExpression;
use crate::context::Context;
use crate::element::{Element, ElementConfig};

#[derive(Debug)]
enum Mode {
	Countdown,
	StopWatch,
}

#[derive(Debug)]
pub struct TimerElement {
	name:                 String,
	variable:             String,
	text_variable:        String,
	hide_on_zero:         bool,
	repeat:               bool,
	mode:                 Mode,
	initial_value:        BakedExpression,
	scale:                BakedExpression,
	sound_on_zero:        BakedExpression,
	played_sound_on_zero: bool,
}

impl TimerElement {}

#[async_trait]
impl Element for TimerElement {
	fn configure(&mut self, config: &ElementConfig) {
		self.variable = config.get_string_or("variable", "");
		self.text_variable = config.get_string_or("text_variable", "");
		self.hide_on_zero = config.get_bool_or("hide_on_zero", false);
		self.repeat = config.get_bool_or("repeat", false);
		self.mode = match config.get_string_or("mode", "Countdown").as_ref() {
			"StopWatch" => Mode::StopWatch,
			_ => Mode::Countdown,
		};
		self.initial_value = config.get_bakedexpression_f32("initial_value", 0.0);
		self.scale = config.get_bakedexpression_f32("scale", 1.0);
		self.sound_on_zero = config.get_bakedexpression_string("sound_on_zero", "");
		self.played_sound_on_zero = true;
		//		dbg!(&self);
		//		todo!("die");
	}

	async fn run(&mut self) -> anyhow::Result<()> {
		Ok(())
	}

	fn update(&mut self, context: &mut Context) {
		self.scale.bake_f32_or(context, 1.0);
		let scale: f32 = self.scale.as_f32();

		//		let scale: f32 = self.scale.into(); // :TODO: fix me

		// count
		//		dbg!(&self.variable);
		let ov = match context.get_f32(&self.variable) {
			Some(v) => {
				let v = match self.mode {
					Mode::Countdown => v - scale * context.time_step() as f32,
					Mode::StopWatch => {
						if v >= 0.0 {
							v + scale * context.time_step() as f32
						} else {
							v
						}
					},
				};
				//					let v = if v > 0.0 { v } else { 0.0 };
				//					let duration = std::time::Duration::new( v as u64, 0);
				let v = if v < 0.0 {
					//					dbg!(&self);
					if self.repeat {
						self.initial_value.bake_f32_or(context, 0.0);
						let initial_value = self.initial_value.as_f32();
						v + initial_value
					} else {
						v
					}
				} else {
					v
				};

				context.set_f32(&self.variable, v);
				Some(v)
			},
			None => {
				self.initial_value.bake_f32_or(context, 0.0);
				let v = self.initial_value.as_f32();
				println!("Setting initial value for {} to {}", &self.name, v);
				context.set_f32(&self.variable, v);
				dbg!(&context);
				None
			},
		};
		// format
		match ov {
			Some(v) => {
				if v <= 1.0 {
					if self.hide_on_zero {
						context.set_string(&self.text_variable, "");
					}
					self.sound_on_zero.bake_string_or(context, "");
					let soundname = self.sound_on_zero.as_string();
					if soundname.len() > 0 && !self.played_sound_on_zero {
						context.play_sound(&soundname);
						self.played_sound_on_zero = true;
					}
				} else if v <= 86400.0 {
					let duration = std::time::Duration::new(v as u64, 0);
					context.set_string(&self.text_variable, &duration.hhmmss());
					self.played_sound_on_zero = false;
				} else {
					context.set_string(&self.text_variable, ":TODO: >24h");
					self.played_sound_on_zero = false;
				}
			},
			None => {
				context.set_string(&self.text_variable, "NaN");
			},
		}
	}

	fn name(&self) -> &str {
		&self.name
	}
	fn set_name(&mut self, name: &str) {
		self.name = name.to_string();
	}

	fn element_type(&self) -> &str {
		"countdown"
	}
}

pub struct TimerElementFactory {}

impl TimerElementFactory {
	pub fn create() -> TimerElement {
		TimerElement {
			name:                 "".to_string(),
			variable:             "".to_string(),
			text_variable:        "".to_string(),
			hide_on_zero:         false,
			repeat:               false,
			mode:                 Mode::Countdown,
			initial_value:        BakedExpression::from_u32(0),
			scale:                BakedExpression::from_f32(1.0),
			sound_on_zero:        BakedExpression::from_str(""),
			played_sound_on_zero: true,
		}
	}
}