use hashbrown::HashSet;
use pkmn_lib::static_data::{DataLibrary, EffectParameter, MoveData, MoveLibrary, SecondaryEffect, TypeLibrary};
use pkmn_lib::StringKey;
use project_root::get_project_root;
use serde_json::Value;
use std::fs::File;
use std::io::Read;

pub fn load_types(path: &String) -> TypeLibrary {
    let mut type_library = TypeLibrary::new(18);

    let mut reader = csv::ReaderBuilder::new()
        .delimiter(b'|')
        .from_path(path.to_string() + "Types.csv")
        .unwrap();
    let headers = reader.headers().unwrap();
    for header in headers.iter().skip(1) {
        type_library.register_type(&StringKey::new(header.clone()));
    }

    for record in reader.records() {
        let record = record.unwrap();
        let offensive_type = record.get(0).unwrap();
        let offensive_type_id = type_library.get_type_id(&StringKey::new(offensive_type.clone()));

        for (i, v) in record.iter().skip(1).enumerate() {
            let effectiveness = v.parse::<f32>().unwrap();
            type_library.set_effectiveness(offensive_type_id, i as u8, effectiveness);
        }
    }

    type_library
}

pub fn load_moves(path: &String, type_library: &TypeLibrary) -> MoveLibrary {
    let mut file = File::open(path.to_string() + "Moves.json").unwrap();
    let mut data = String::new();
    file.read_to_string(&mut data).unwrap();
    println!("1");
    let json: Value = serde_json::from_str(&data).unwrap();
    println!("a");
    let data = json.as_object().unwrap().get("data").unwrap().as_array().unwrap();
    println!("this");
    let mut move_library = MoveLibrary::new(data.len());
    println!("Heeere");
    for move_data in data {
        let move_data = move_data.as_object().unwrap();
        let move_name = StringKey::new(move_data["name"].as_str().unwrap().clone());
        println!("Loaded move {:?}", move_name);
        let move_type = StringKey::new(move_data["type"].as_str().unwrap());
        let move_type_id = type_library.get_type_id(&move_type);
        let move_category = serde_json::from_value(move_data["category"].clone()).unwrap();
        let base_power = move_data["power"].as_i64().unwrap() as u8;
        let accuracy = move_data["accuracy"].as_i64().unwrap() as u8;
        let pp = move_data["pp"].as_i64().unwrap() as u8;
        let target = serde_json::from_value(move_data["target"].clone()).unwrap();
        let priority = move_data["priority"].as_i64().unwrap() as i8;
        let secondary_effect = if let Some(v) = move_data.get("effect") {
            let mut chance = -1.0;
            if let Some(chance_value) = v.get("chance") {
                chance = chance_value.as_f64().unwrap() as f32;
            }
            let mut parameters = Vec::new();
            if let Some(pars) = v.get("parameters") {
                let pars = pars.as_array().unwrap();
                for par in pars {
                    match par {
                        Value::Null => {
                            panic!("Unexpected type")
                        }
                        Value::Bool(b) => {
                            parameters.push(EffectParameter::Bool(*b));
                        }
                        Value::Number(n) => {
                            if n.is_f64() {
                                parameters.push(EffectParameter::Float(n.as_f64().unwrap() as f32));
                            } else {
                                parameters.push(EffectParameter::Int(n.as_i64().unwrap()));
                            }
                        }
                        Value::String(s) => {
                            parameters.push(EffectParameter::String(s.clone()));
                        }
                        Value::Array(_) => {
                            panic!("Unexpected type")
                        }
                        Value::Object(_) => {
                            panic!("Unexpected type")
                        }
                    }
                }
            }

            SecondaryEffect::new(chance, StringKey::new(v["name"].as_str().unwrap().clone()), parameters)
        } else {
            SecondaryEffect::empty()
        };

        let mut flags = HashSet::new();
        if let Some(f) = move_data.get("flags") {
            let f = f.as_array().unwrap();
            for flag in f {
                flags.insert(StringKey::new(flag.as_str().unwrap()));
            }
        }

        move_library.add(
            &move_name,
            MoveData::new(
                &move_name.clone(),
                move_type_id,
                move_category,
                base_power,
                accuracy,
                pp,
                target,
                priority,
                secondary_effect,
                flags,
            ),
        );
    }

    move_library
}

#[test]
#[cfg_attr(miri, ignore)]
fn test_type_library_loaded() {
    let mut path = get_project_root().unwrap();
    path.push("tests/data/");
    let lib = load_types(&path.to_str().unwrap().to_string());

    assert_eq!(
        lib.get_effectiveness(
            lib.get_type_id(&StringKey::new("fire")),
            &vec![lib.get_type_id(&StringKey::new("grass")),]
        ),
        2.0
    );
}