#![allow(dead_code, unused_must_use)]
use std::collections::{HashMap, BTreeMap};
use serde::{Serialize, Deserialize};
use std::fs::File;
use std::io::Read;

use entity::item::weapon::WeaponType;
use entity::item::armor::ArmorType;
use entity::item::shield::ShieldType;
use entity::item::unit::UnitType;
use entity::item::mag::MagType;
use entity::item::tool::ToolType;
use entity::item::tech::Technique;


lazy_static::lazy_static! {
    pub static ref WEAPON_STATS: HashMap<WeaponType, WeaponStats> = weapon_stats();
    pub static ref ARMOR_STATS: HashMap<ArmorType, ArmorStats> = armor_stats();
    pub static ref SHIELD_STATS: HashMap<ShieldType, ShieldStats> = shield_stats();
    pub static ref UNIT_STATS: BTreeMap<UnitType, UnitStats> = unit_stats();
    pub static ref TOOL_STATS: HashMap<ToolType, ToolStats> = tool_stats();
    pub static ref TECH_STATS: HashMap<Technique, TechStats> = tech_stats();
}


fn load_data_file<T: serde::de::DeserializeOwned>(path: &str) -> T {
    let mut f = File::open(path).unwrap();
    let mut s = String::new();
    f.read_to_string(&mut s);

    toml::from_str::<T>(s.as_str()).unwrap()
}


#[derive(Debug, Copy, Clone, Serialize, Deserialize)]
pub struct WeaponStats {
    pub grind: usize,
    pub atp_min: usize,
    pub atp_max: usize,
    pub shop_multiplier: f32,
}

#[derive(Debug, Copy, Clone, Serialize, Deserialize)]
pub struct ArmorStats {
    pub stars: u32,
    pub dfp: i32,
    pub evp: i32,
    pub dfp_modifier: u32,
    pub evp_modifier: u32,
    pub team_points: u32,
    pub level_req: u32,
    pub efr: i32,
    pub eic: i32,
    pub eth: i32,
    pub elt: i32,
    pub edk: i32,
}

#[derive(Debug, Copy, Clone, Serialize, Deserialize)]
pub struct ShieldStats {
    pub stars: u32,
    pub dfp: i32,
    pub evp: i32,
    pub dfp_modifier: u32,
    pub evp_modifier: u32,
    pub team_points: u32,
    pub level_req: u32,
    pub efr: i32,
    pub eic: i32,
    pub eth: i32,
    pub elt: i32,
    pub edk: i32,
}

#[derive(Debug, Copy, Clone, Serialize, Deserialize)]
pub struct UnitStats {
    pub stars: u32,
    pub stat: u32,
    pub amount: u32,
    pub team_points: u32,
    pub modifier: u32,
}


#[derive(Debug, Copy, Clone, Serialize, Deserialize)]
pub struct ToolStats {
    pub price: usize,
}

#[derive(Debug, Copy, Clone, Serialize, Deserialize)]
pub struct TechStats {
    pub price: usize,
}

#[derive(Debug, Copy, Clone, Serialize, Deserialize)]
pub struct MagStats {
    pub feed_table: u32,
}

#[derive(Debug, Copy, Clone, Serialize, Deserialize)]
pub struct MagFeedStats {
    def: i8,
    pow: i8,
    dex: i8,
    mnd: i8,
    iq: i8,
    syn: i8,
}

#[derive(Debug)]
pub struct MagFeedTable(HashMap<ToolType, MagFeedStats>);

#[derive(Debug)]
pub struct MagFeedTables(Vec<MagFeedTable>);

pub fn weapon_stats() -> HashMap<WeaponType, WeaponStats> {
    let weapon_stats: HashMap<String, WeaponStats> = load_data_file("data/item_stats/weapon_stats.toml");
    weapon_stats.iter()
        .map(|(name, stats)| {
            (name.parse().unwrap(), *stats)
        }).collect()
}

pub fn armor_stats() -> HashMap<ArmorType, ArmorStats> {
    let armor_stats: HashMap<String, ArmorStats> = load_data_file("data/item_stats/armor_stats.toml");
    armor_stats.iter()
        .map(|(name, stats)| {
            (name.parse().unwrap(), *stats)
        }).collect()
}

pub fn shield_stats() -> HashMap<ShieldType, ShieldStats> {
    let shield_stats: HashMap<String, ShieldStats> = load_data_file("data/item_stats/shield_stats.toml");
    shield_stats.iter()
        .map(|(name, stats)| {
            (name.parse().unwrap(), *stats)
        }).collect()
}

pub fn unit_stats() -> BTreeMap<UnitType, UnitStats> {
    let unit_stats: BTreeMap<String, UnitStats> = load_data_file("data/item_stats/unit_stats.toml");
    unit_stats.iter()
        .map(|(name, stats)| {
            (name.parse().unwrap(), *stats)
        }).collect()
}

pub fn tool_stats() -> HashMap<ToolType, ToolStats> {
    let tool_stats: HashMap<String, ToolStats> = load_data_file("data/item_stats/tool_stats.toml");
    tool_stats.iter()
        .map(|(name, stats)| {
            (name.parse().unwrap(), *stats)
        }).collect()
}

pub fn tech_stats() -> HashMap<Technique, TechStats> {
    let tech_stats: HashMap<String, TechStats> = load_data_file("data/item_stats/tech_stats.toml");
    tech_stats.iter()
        .map(|(name, stats)| {
            (name.parse().unwrap(), *stats)
        }).collect()
}

pub fn mag_stats() -> HashMap<MagType, MagStats> {
    let mag_stats: BTreeMap<String, MagStats> = load_data_file("data/item_stats/mag_stats.toml");
    mag_stats.iter()
        .map(|(name, stats)| {
            (name.parse().unwrap(), *stats)
        }).collect()
}

pub fn mag_feed_tables() -> MagFeedTables {
    let mag_feed_tables: BTreeMap<String, Vec<BTreeMap<String, MagFeedStats>>> = load_data_file("data/item_stats/mag_feed_table.toml");

    MagFeedTables(mag_feed_tables.get("feedtable").unwrap().iter()
        .map(|feed_table| {
            MagFeedTable(feed_table.iter()
                         .map(|(tool, feed_stats)| {
                             (tool.parse().unwrap(), *feed_stats)
                         }).collect())
        }).collect())
}


#[cfg(test)]
mod test {
    use super::*;
    
    #[test]
    fn test_weapon_stats() {
        let wstat = weapon_stats();
        assert!(wstat.get(&WeaponType::MadamsUmbrella).unwrap().atp_max == 280);
    }

    #[test]
    fn test_armor_stats() {
        let astat = armor_stats();
        assert!(astat.get(&ArmorType::CrimsonCoat).unwrap().stars == 11);
    }

    #[test]
    fn test_shield_stats() {
        let sstat = shield_stats();
        assert!(sstat.get(&ShieldType::RedRing).unwrap().stars == 11);
    }

    #[test]
    fn test_unit_stats() {
        let ustat = unit_stats();
        assert!(ustat.get(&UnitType::ElfArm).unwrap().stars == 5);
    }

    #[test]
    fn test_tool_stats() {
        let tstat = tool_stats();
        assert!(tstat.get(&ToolType::Monomate).unwrap().price == 50);
    }

    #[test]
    fn test_tech_stats() {
        let tstat = tech_stats();
        assert!(tstat.get(&Technique::Reverser).unwrap().price == 5000);
    }

    #[test]
    fn test_mag_stats() {
        let mstats = mag_stats();
        assert!(mstats[&MagType::Sato].feed_table== 5);
        assert!(mstats[&MagType::Nidra].feed_table == 7);
    }

    #[test]
    fn test_mag_feed_tables() {
        let mfeed = mag_feed_tables();
        assert!(mfeed.0[7].0[&ToolType::Monomate].pow == 21);
        assert!(mfeed.0[5].0[&ToolType::MoonAtomizer].syn== 2);
    }
}