// use rand::prelude::*;
use uuid::Uuid;

use cryp::{Cryp, CrypSkill, CrypStat};

#[derive(Debug,Clone,Copy,PartialEq,Serialize,Deserialize)]
pub struct Roll {
    pub base: u64,
    pub result: u64,
}

pub type Cooldown = Option<u8>;

#[derive(Debug,Clone,Copy,PartialEq,Serialize,Deserialize)]
pub enum Skill {
    Attack,
    Block,
    Heal,
    Stun,
    Dodge,
    // used by tests, no cd, no dmg
    TestTouch,
    TestStun,
    TestBlock,
}

impl Skill {
    pub fn cd(&self) -> Cooldown {
        match self {
            Skill::Attack => None,
            Skill::Block => Some(1),
            Skill::Dodge => Some(1),
            Skill::Heal => Some(2),
            Skill::Stun => Some(2),
            Skill::TestTouch => None,
            Skill::TestStun => None,
            Skill::TestBlock => None,
        }
    }

    pub fn speed(&self) -> u8 {
        match self {
            Skill::Attack => 10,
            Skill::Block => 5,
            Skill::Dodge => 5,
            Skill::Heal => 2,
            Skill::Stun => 2,
            Skill::TestTouch => 10,
            Skill::TestStun => 2,
            Skill::TestBlock => 5,
        }
    }

    pub fn stat(&self, cryp: &Cryp) -> CrypStat {
        match self {
            Skill::Attack => cryp.str,
            Skill::Block => cryp.str,
            Skill::Stun => cryp.str,
            Skill::Dodge => cryp.agi,
            Skill::Heal => cryp.int,

            // test skills
            Skill::TestTouch => cryp.int,
            Skill::TestStun => cryp.str,
            Skill::TestBlock => cryp.str,
        }
    }

    pub fn duration(&self) -> u8 {
        match self {
            Skill::Dodge => 1,
            Skill::Stun => 2,
            Skill::Block => 1,

            Skill::TestBlock => 1,
            Skill::TestStun => 2,
            _ => panic!("{:?} does not have a duration", self),
        }
    }

    pub fn self_targeting(&self) -> bool {
        match self {
            Skill::Block => true,
            Skill::TestBlock => true,
            _ => false,
        }
    }

    pub fn castable(&self, cryp: &Cryp) -> bool {
        if cryp.is_stunned() {
            return false;
        }
        true
    }
}


#[derive(Debug,Clone,Copy,PartialEq,Serialize,Deserialize)]
pub struct Cast {
    pub id: Uuid,
    pub skill: Skill,
    pub source_team_id: Uuid,
    pub source_cryp_id: Uuid,
    pub target_cryp_id: Option<Uuid>,
    pub target_team_id: Uuid,
    pub roll: Option<Roll>,
}

impl Cast {
    pub fn new(source_cryp_id: Uuid, source_team_id: Uuid, target_team_id: Option<Uuid>, skill: Skill) -> Cast {

        let (target_cryp_id, target_team_id) = match skill.self_targeting() {
            true => (Some(source_cryp_id), source_team_id),
            false => (None, target_team_id.unwrap())
        };

        return Cast {
            id: Uuid::new_v4(),
            source_cryp_id,
            source_team_id,
            target_cryp_id,
            target_team_id,
            skill,
            roll: None,
        };
    }

    pub fn resolve(&mut self, cryp: &mut Cryp, target: &mut Cryp) -> &mut Cast {
        let roll = cryp.roll(self.skill);

        println!("{:?} -> {:?} -> {:?}", cryp.name, self.skill, target.name);

        match self.skill {
            // the real deal
            Skill::Stun => target.stun(roll),
            Skill::Attack => target.attack(roll),
            Skill::Block => target.block(roll),
            Skill::Heal => target,
            Skill::Dodge => target,

            // Test Skills
            Skill::TestStun => target.stun(roll),
            Skill::TestBlock => target.block(roll),
            Skill::TestTouch => target,
        };

        // println!("{:?} gettin clapped for {:?}", target.name, roll.result);

        self.roll = Some(roll);
        self
    }

    pub fn set_target(&mut self, cryp_id: Uuid) -> &mut Cast {
        self.target_cryp_id = Some(cryp_id);
        self
    }

    pub fn used_cooldown(self) -> bool {
        let cs = CrypSkill::new(self.skill);
        return cs.cd.is_some();
    }
}

// #[derive(Debug,Clone,Copy,PartialEq,Serialize,Deserialize)]
// pub enum Skill {
//   Stoney,
//   Evasive,
// }

// impl Skill {
//   pub fn apply(&self, roll: Roll) -> Roll {
//     match self {
//       Skill::Stoney => stoney(self, roll),
//       Skill::Evasive => evasive(self, roll),
//     }
//   }
// }

// fn stoney(_s: &Skill, mut roll: Roll) -> Roll {
//   let effect = 0b11110000;
//   match roll.kind {
//       StatKind::Def => {
//         // println!("{:064b} | <- {:?}", effect, s);
//         roll.result = roll.result | effect;
//         roll
//       },
//       _ => roll,
//   }
// }

// fn evasive(_s: &Skill, mut roll: Roll) -> Roll {
//   match roll.kind {
//       StatKind::Def => {
//         if roll.result.is_power_of_two() {
//           roll.result = u64::max_value()
//         }
//         roll
//       },
//       _ => roll,
//   }
// }