use crate::config::GlobalData;
use crate::error::Error;
use j_db::database::Database;
use j_db::model::JdbModel;
use rand::distributions::Standard;
use rand::prelude::Distribution;
use rand::{thread_rng, Rng};
use serde::{Deserialize, Serialize};
use serenity::model::guild::Emoji;
use serenity::model::id::{EmojiId, GuildId};
use serenity::prelude::Context;
use serenity::utils::MessageBuilder;
use std::time::Duration;

pub fn draw_standing(emoji: &Emoji) -> String {
    let mut msg = MessageBuilder::new();

    msg.push_line(":blue_square::blue_square::blue_square::blue_square::blue_square:");
    msg.push_line(":blue_square::blue_square::blue_square::blue_square::blue_square:");
    msg.push_line(":blue_square::blue_square::blue_square::blue_square::blue_square:");
    msg.push(":blue_square::blue_square:");
    msg.emoji(emoji);
    msg.push_line(":blue_square::blue_square:");
    msg.push_line(":green_square::green_square::green_square::green_square::green_square:");

    msg.build()
}

pub fn draw_dancing(emoji: &Emoji) -> String {
    let mut msg = MessageBuilder::new();

    msg.push_line(":blue_square::blue_square::blue_square::blue_square::blue_square:");
    msg.push_line(":blue_square::blue_square::blue_square::notes::blue_square:");
    msg.push_line(":blue_square::notes::blue_square::notes::blue_square:");
    msg.push(":blue_square::blue_square:");
    msg.emoji(emoji);
    msg.push_line(":blue_square::blue_square:");
    msg.push_line(":green_square::green_square::green_square::green_square::green_square:");

    msg.build()
}

pub fn draw_tax_fraud(emoji: &Emoji) -> String {
    let mut msg = MessageBuilder::new();

    msg.push_line(":blue_square::blue_square::blue_square::blue_square::blue_square:");
    msg.push_line(":blue_square::blue_square::blue_square::blue_square::blue_square:");
    msg.push_line(":blue_square::blue_square::blue_square::blue_square::blue_square:");
    msg.push(":blue_square::page_with_curl:");
    msg.emoji(emoji);
    msg.push_line(":blue_square::blue_square:");
    msg.push_line(":green_square::green_square::green_square::green_square::green_square:");

    msg.build()
}

pub fn draw_sick(emoji: &Emoji) -> String {
    let mut msg = MessageBuilder::new();

    msg.push_line(":blue_square::blue_square::blue_square::blue_square::blue_square:");
    msg.push_line(":blue_square::blue_square::blue_square::blue_square::blue_square:");
    msg.push_line(":blue_square::blue_square::blue_square::blue_square::blue_square:");
    msg.push(":blue_square::bucket:");
    msg.emoji(emoji);
    msg.push_line(":roll_of_paper::blue_square:");
    msg.push_line(":green_square::green_square::green_square::green_square::green_square:");

    msg.build()
}

pub fn draw_sleep(emoji: &Emoji) -> String {
    let mut msg = MessageBuilder::new();

    msg.push_line(":blue_square::blue_square::blue_square::blue_square::blue_square:");
    msg.push_line(":blue_square::blue_square::blue_square::blue_square::blue_square:");
    msg.push(":blue_square::blue_square:");
    msg.emoji(emoji);
    msg.push_line(":blue_square::blue_square:");
    msg.push_line(":blue_square::blue_square::bed::blue_square::blue_square:");
    msg.push_line(":green_square::green_square::green_square::green_square::green_square:");

    msg.build()
}

pub fn draw_dead() -> String {
    let mut msg = MessageBuilder::new();

    msg.push_line(":blue_square::blue_square::blue_square::blue_square::blue_square:");
    msg.push_line(":blue_square::blue_square::blue_square::blue_square::blue_square:");
    msg.push_line(":blue_square::blue_square::blue_square::blue_square::blue_square:");
    msg.push_line(":blue_square::blue_square::headstone::blue_square::blue_square:");
    msg.push_line(":green_square::green_square::green_square::green_square::green_square:");

    msg.build()
}

pub fn draw_feed(emoji: &Emoji, food: &str) -> String {
    let mut msg = MessageBuilder::new();

    msg.push_line(":blue_square::blue_square::blue_square::blue_square::blue_square:");
    msg.push_line(":blue_square::blue_square::blue_square::blue_square::blue_square:");
    msg.push_line(":blue_square::blue_square::blue_square::blue_square::blue_square:");
    msg.push(":blue_square::blue_square:");
    msg.emoji(emoji);
    msg.push(food);
    msg.push_line(":blue_square:");
    msg.push_line(":green_square::green_square::green_square::green_square::green_square:");

    msg.build()
}

#[derive(Debug, Deserialize, Serialize, Clone, PartialOrd, PartialEq)]
pub enum LilFrenState {
    Standing,
    TaxFraud,
    Sick,
    Dancing,
    Sleep,
}

#[derive(Debug, Clone, PartialOrd, PartialEq)]
pub enum AliveState {
    Alive,
    DiedOfBoredom,
    DiedOfHunger,
    DiedOfThirst,
}

impl Distribution<LilFrenState> for Standard {
    fn sample<R: Rng + ?Sized>(&self, rng: &mut R) -> LilFrenState {
        match rng.gen_range(0..100) {
            0..=30 => LilFrenState::Standing,
            31..=40 => LilFrenState::TaxFraud,
            41..=50 => LilFrenState::Sick,
            51..=70 => LilFrenState::Dancing,
            _ => LilFrenState::Sleep,
        }
    }
}

#[derive(Debug, Deserialize, Serialize, Clone)]
pub struct LilFren {
    id: Option<u64>,
    pub emoji: EmojiId,
    pub hunger: f32,
    pub thirst: f32,
    pub entertainment: f32,

    pub state: LilFrenState,
    pub smarts: f32,
    pub metabolism: f32,
}

impl JdbModel for LilFren {
    fn id(&self) -> Option<u64> {
        self.id
    }

    fn set_id(&mut self, id: u64) {
        self.id = Some(id)
    }

    fn tree() -> String {
        "LilFren".to_string()
    }
}

impl LilFren {
    pub fn new(emoji: EmojiId) -> Self {
        Self {
            id: None,
            emoji,
            hunger: 1.0,
            thirst: 1.0,
            entertainment: 1.0,
            state: LilFrenState::Standing,
            smarts: thread_rng().gen_range(0.1..1.0),
            metabolism: thread_rng().gen_range(0.1..1.0),
        }
    }

    pub fn create_new_lil_fren(db: &Database, emoji: EmojiId) -> Result<Self, Error> {
        let lil_fren: Option<Self> = Self::get_lil_fren(db)?;

        if let Some(lil_fren) = lil_fren {
            db.remove::<LilFren>(lil_fren.id().unwrap())?;
        }

        let lil_fren = db.insert(Self::new(emoji))?;

        Ok(lil_fren)
    }

    pub fn get_lil_fren(db: &Database) -> Result<Option<Self>, Error> {
        Ok(db.filter(|_, _fren: &Self| true)?.next())
    }

    pub fn update_fren(&mut self, db: &Database) -> Result<(), Error> {
        if let Some(mut lil_fren) = Self::get_lil_fren(db)? {
            let (hunger_diff, thirst_diff, entertainment_diff) = match lil_fren.state {
                LilFrenState::Standing => (-0.01, -0.02, -0.01),
                LilFrenState::TaxFraud => (-0.01, -0.02, 0.01),
                LilFrenState::Sick => (-0.1, -0.15, -0.01),
                LilFrenState::Dancing => (-0.05, -0.8, 0.05),
                LilFrenState::Sleep => (-0.005, -0.01, 0.00),
            };

            lil_fren.hunger -= hunger_diff * self.metabolism;
            lil_fren.thirst -= thirst_diff * self.metabolism;
            lil_fren.entertainment -= entertainment_diff * self.smarts;

            if thread_rng().gen_bool(0.75) {
                println!("fren is now {:?}", self.state);
                lil_fren.state = thread_rng().gen();
            }

            db.insert(lil_fren)?;
        }

        Ok(())
    }

    pub fn is_alive(&self) -> AliveState {
        if self.thirst < 0.0 {
            AliveState::DiedOfThirst
        } else if self.entertainment < 0.0 {
            AliveState::DiedOfBoredom
        } else if self.hunger < 0.0 {
            AliveState::DiedOfHunger
        } else {
            AliveState::Alive
        }
    }

    fn draw_activity(&self, emoji: &Emoji) -> String {
        match self.state {
            LilFrenState::Standing => draw_standing(emoji),
            LilFrenState::TaxFraud => draw_tax_fraud(emoji),
            LilFrenState::Sick => draw_sick(emoji),
            LilFrenState::Dancing => draw_dancing(emoji),
            LilFrenState::Sleep => draw_sleep(emoji),
        }
    }

    pub async fn draw(&self, ctx: &Context, guild: &GuildId) -> String {
        let emoji = guild.emoji(&ctx.http, self.emoji).await.unwrap();
        let alive_state = self.is_alive();

        if let AliveState::Alive = alive_state {
            self.draw_activity(&emoji)
        } else {
            draw_dead()
        }
    }
}

pub async fn lil_fren_task(ctx: &Context) {
    tokio::time::sleep(Duration::from_secs(60)).await;
    let data = ctx.data.read().await;
    let global_data = data.get::<GlobalData>().unwrap();

    let fren = LilFren::get_lil_fren(&global_data.db).unwrap();

    if let Some(mut fren) = fren {
        fren.update_fren(&global_data.db).unwrap();
    }
}