// Copyright (C) 2025 Emilis Bliūdžius
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as
// published by the Free Software Foundation, either version 3 of the
// License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <https://www.gnu.org/licenses/>.
use core::{fmt::Debug, num::NonZeroU8};

use serde::{Deserialize, Serialize};
use werewolves_macros::Titles;

use crate::{character::CharacterId, game::GameTime};

#[derive(Debug, Clone, PartialEq, Serialize, Deserialize, Titles)]
pub enum DiedTo {
    Execution {
        day: NonZeroU8,
    },
    MapleWolf {
        source: CharacterId,
        night: NonZeroU8,
        starves_if_fails: bool,
    },
    MapleWolfStarved {
        night: NonZeroU8,
    },
    Militia {
        killer: CharacterId,
        night: NonZeroU8,
    },
    Wolfpack {
        killing_wolf: CharacterId,
        night: NonZeroU8,
    },
    AlphaWolf {
        killer: CharacterId,
        night: NonZeroU8,
    },
    Shapeshift {
        into: CharacterId,
        night: NonZeroU8,
    },
    Hunter {
        killer: CharacterId,
        night: NonZeroU8,
    },
    GuardianProtecting {
        source: CharacterId,
        protecting: CharacterId,
        protecting_from: CharacterId,
        protecting_from_cause: Box<DiedTo>,
        night: NonZeroU8,
    },
    PyreMaster {
        killer: CharacterId,
        night: NonZeroU8,
    },
    PyreMasterLynchMob {
        source: CharacterId,
        night: NonZeroU8,
    },
    MasonLeaderRecruitFail {
        tried_recruiting: CharacterId,
        night: u8,
    },
    LoneWolf {
        killer: CharacterId,
        night: u8,
    },
}

impl DiedTo {
    pub fn next_night(&self) -> Option<DiedTo> {
        let mut next = self.clone();
        match &mut next {
            DiedTo::Execution { .. } => return None,

            DiedTo::MapleWolf { night, .. }
            | DiedTo::MapleWolfStarved { night }
            | DiedTo::Militia { night, .. }
            | DiedTo::Wolfpack { night, .. }
            | DiedTo::AlphaWolf { night, .. }
            | DiedTo::Shapeshift { night, .. }
            | DiedTo::Hunter { night, .. }
            | DiedTo::GuardianProtecting { night, .. }
            | DiedTo::PyreMasterLynchMob { night, .. }
            | DiedTo::PyreMaster { night, .. } => *night = NonZeroU8::new(night.get() + 1)?,

            DiedTo::LoneWolf { night, .. } | DiedTo::MasonLeaderRecruitFail { night, .. } => {
                *night = *night + 1
            }
        }

        Some(next)
    }
    pub const fn killer(&self) -> Option<CharacterId> {
        match self {
            DiedTo::Execution { .. }
            | DiedTo::MapleWolfStarved { .. }
            | DiedTo::Shapeshift { .. } => None,
            DiedTo::MapleWolf { source: killer, .. }
            | DiedTo::Militia { killer, .. }
            | DiedTo::Wolfpack {
                killing_wolf: killer,
                ..
            }
            | DiedTo::AlphaWolf { killer, .. }
            | DiedTo::Hunter { killer, .. }
            | DiedTo::GuardianProtecting {
                protecting_from: killer,
                ..
            }
            | DiedTo::MasonLeaderRecruitFail {
                tried_recruiting: killer,
                ..
            }
            | DiedTo::PyreMasterLynchMob { source: killer, .. }
            | DiedTo::PyreMaster { killer, .. }
            | DiedTo::LoneWolf { killer, .. } => Some(*killer),
        }
    }
    pub const fn date_time(&self) -> GameTime {
        match self {
            DiedTo::Execution { day } => GameTime::Day { number: *day },
            DiedTo::GuardianProtecting {
                source: _,
                protecting: _,
                protecting_from: _,
                protecting_from_cause: _,
                night,
            }
            | DiedTo::MapleWolf {
                source: _,
                night,
                starves_if_fails: _,
            }
            | DiedTo::MapleWolfStarved { night }
            | DiedTo::Militia { killer: _, night }
            | DiedTo::Wolfpack {
                night,
                killing_wolf: _,
            }
            | DiedTo::AlphaWolf { killer: _, night }
            | DiedTo::Shapeshift { into: _, night }
            | DiedTo::PyreMasterLynchMob { night, .. }
            | DiedTo::PyreMaster { night, .. }
            | DiedTo::Hunter { killer: _, night } => GameTime::Night {
                number: night.get(),
            },
            DiedTo::LoneWolf { night, .. } | DiedTo::MasonLeaderRecruitFail { night, .. } => {
                GameTime::Night { number: *night }
            }
        }
    }
}