use crate::auth_client::AuthClient;
use crate::character_client::CharacterClient;
use crate::connection_service::ConnectionService;
use crate::dataconsts::*;
use crate::enums;
use crate::enums::ItemType;
use crate::packet::{send_packet, Packet, PacketPayload};
use crate::packet_type::PacketType;
use crate::packets::*;
use std::collections::HashMap;
use std::env;
use std::error::Error;
use std::sync::Arc;
use tokio::net::TcpStream;
use tokio::sync::Mutex;
use tonic::{Code, Status};
use tracing::{debug, error, info, warn};
use utils::null_string::NullTerminatedString;

pub(crate) fn convert_slot_to_equip_slot(slot: i32) -> srv_char_list_reply::EquippedPosition {
    match enums::EquippedPosition::from_i32(slot) {
        Some(enums::EquippedPosition::Goggles) => srv_char_list_reply::EquippedPosition::Googles,
        Some(enums::EquippedPosition::Helmet) => srv_char_list_reply::EquippedPosition::Helmet,
        Some(enums::EquippedPosition::Armor) => srv_char_list_reply::EquippedPosition::Armor,
        Some(enums::EquippedPosition::Backpack) => srv_char_list_reply::EquippedPosition::Backpack,
        Some(enums::EquippedPosition::Gauntlet) => srv_char_list_reply::EquippedPosition::Gauntlet,
        Some(enums::EquippedPosition::Boots) => srv_char_list_reply::EquippedPosition::Boots,
        Some(enums::EquippedPosition::WeaponR) => srv_char_list_reply::EquippedPosition::WeaponR,
        Some(enums::EquippedPosition::WeaponL) => srv_char_list_reply::EquippedPosition::WeaponL,
        _ => srv_char_list_reply::EquippedPosition::MaxItems,
    }
}

pub(crate) fn convert_slot_to_body_part(slot: i32) -> usize {
    match enums::EquippedPosition::from_i32(slot) {
        Some(enums::EquippedPosition::Goggles) => 6,
        Some(enums::EquippedPosition::Helmet) => 2,
        Some(enums::EquippedPosition::Armor) => 3,
        Some(enums::EquippedPosition::Backpack) => 7,
        Some(enums::EquippedPosition::Gauntlet) => 4,
        Some(enums::EquippedPosition::Boots) => 5,
        Some(enums::EquippedPosition::WeaponR) => 8,
        Some(enums::EquippedPosition::WeaponL) => 9,
        _ => 12,
    }
}

pub(crate) fn convert_type_to_body_part(slot: i32) -> ItemType {
    match enums::EquippedPosition::from_i32(slot) {
        Some(enums::EquippedPosition::Goggles) => ItemType::ItemGoggles,
        Some(enums::EquippedPosition::Helmet) => ItemType::ItemHelmet,
        Some(enums::EquippedPosition::Armor) => ItemType::ItemArmor,
        Some(enums::EquippedPosition::Backpack) => ItemType::ItemBackpack,
        Some(enums::EquippedPosition::Gauntlet) => ItemType::ItemGauntlet,
        Some(enums::EquippedPosition::Boots) => ItemType::ItemBoots,
        Some(enums::EquippedPosition::WeaponR) => ItemType::ItemWeaponR,
        Some(enums::EquippedPosition::WeaponL) => ItemType::ItemWeaponL,
        _ => ItemType::None,
    }
}

pub(crate) async fn handle_char_list_req(
    stream: &mut TcpStream,
    packet: Packet,
    character_client: Arc<Mutex<CharacterClient>>,
    connection_service: Arc<ConnectionService>,
    connection_id: String,
) -> Result<(), Box<dyn Error + Send + Sync>> {
    use crate::packets::cli_char_list_req::*;
    use crate::packets::srv_char_list_reply::*;
    let request = CliCharListReq::decode(packet.payload.as_slice());
    debug!("{:?}", request);

    let mut user_id= "".to_string();
    let session_id;
    if let Some(mut state) = connection_service.get_connection(&connection_id) {
        user_id = state.user_id.expect("Missing user id in connection state");
        session_id = state
            .session_id
            .expect("Missing session id in connection state");
    }

    // query the character service for the character list for this user
    let mut character_client = character_client.lock().await;
    let character_list = character_client
        .get_character_list(&user_id)
        .await?;
    let mut characters = vec![];
    let mut character_id_list: Vec<u32> = Vec::new();
    for character in character_list.characters {
        let mut item_list: [EquippedItem; (MAX_VISIBLE_ITEMS as usize)] =
            core::array::from_fn(|i| EquippedItem::default());

        for item in character.items {
            if item.slot < MAX_VISIBLE_ITEMS as i32 {
                let slot = convert_slot_to_equip_slot(item.slot) as usize;
                item_list[slot] = EquippedItem {
                    id: item.item_id as u16,
                    gem_opt: item.gem_option as u16,
                    socket: item.socket as i8,
                    grade: item.grade as u8,
                };
            }
        }

        let character_info = CharInfo {
            name: NullTerminatedString(character.name),
            race: character.looks.unwrap().race as u8,
            level: character.stats.unwrap().level as u16,
            job: character.stats.unwrap().job as u16,
            remain_secs_until_delete: character.delete_time as u32,
            platinium: 0,
            face: character.looks.unwrap().face as u32,
            hair: character.looks.unwrap().hair as u32,
            items: item_list,
        };
        character_id_list.push(character.character_id.parse().unwrap());
        characters.push(character_info);
    }

    if let Some(mut state) = connection_service.get_connection_mut(&connection_id) {
        state.character_list = Some(character_id_list); // Save the real character id's for later as the client sends what is selected from 0 index. It does not use the real character idss
    }

    let data = SrvCharListReply { characters };
    let response_packet = Packet::new(PacketType::PakccCharListReply, &data)?;
    send_packet(stream, &response_packet).await?;

    Ok(())
}

pub(crate) async fn handle_create_char_req(
    stream: &mut TcpStream,
    packet: Packet,
    character_client: Arc<Mutex<CharacterClient>>,
    connection_service: Arc<ConnectionService>,
    connection_id: String,
) -> Result<(), Box<dyn Error + Send + Sync>> {
    use crate::packets::cli_create_char_req::*;
    use crate::packets::srv_create_char_reply::*;
    let request = CliCreateCharReq::decode(packet.payload.as_slice())?;
    debug!("{:?}", request);

    let mut user_id = "".to_string();
    let session_id;
    if let Some(mut state) = connection_service.get_connection(&connection_id) {
        user_id = state.user_id.expect("Missing user id in connection state");
        session_id = state
            .session_id
            .expect("Missing session id in connection state");
    }

    // send the data to the character service to create the character
    let mut character_client = character_client.lock().await;
    let create_character_response = character_client
        .create_character(
            &user_id.to_string(),
            request.name,
            request.race,
            request.face,
            request.hair,
            request.stone,
        )
        .await?;
    let result = match create_character_response.result {
        0 => srv_create_char_reply::Result::Ok,
        1 => srv_create_char_reply::Result::Failed,
        2 => srv_create_char_reply::Result::NameTaken,
        3 => srv_create_char_reply::Result::InvalidValue,
        4 => srv_create_char_reply::Result::TooManyChars,
        5 => srv_create_char_reply::Result::Blocked,
        _ => srv_create_char_reply::Result::Failed,
    };

    let data = SrvCreateCharReply {
        result,
        platininum: 0,
    };
    let response_packet = Packet::new(PacketType::PakccCreateCharReply, &data)?;
    send_packet(stream, &response_packet).await?;

    Ok(())
}

pub(crate) async fn handle_delete_char_req(
    stream: &mut TcpStream,
    packet: Packet,
    character_client: Arc<Mutex<CharacterClient>>,
    connection_service: Arc<ConnectionService>,
    connection_id: String,
) -> Result<(), Box<dyn Error + Send + Sync>> {
    use crate::packets::cli_delete_char_req::*;
    use crate::packets::srv_delete_char_reply::*;
    let request = CliDeleteCharReq::decode(packet.payload.as_slice())?;
    debug!("{:?}", request);

    let mut user_id = "".to_string();
    let session_id;
    let mut character_id_list: Vec<u32> = Vec::new();

    if let Some(mut state) = connection_service.get_connection(&connection_id) {
        user_id = state.user_id.expect("Missing user id in connection state");
        session_id = state
            .session_id
            .expect("Missing session id in connection state");
        character_id_list = state.character_list.expect("Missing character id list");
    }

    let mut character_client = character_client.lock().await;
    let delete_response = character_client
        .delete_character(
            &user_id.to_string(),
            &character_id_list[request.char_id as usize].to_string(),
            request.is_delete as i32,
        )
        .await?;

    let character_name = request.name;
    let data = SrvDeleteCharReply {
        remaining_time: delete_response.remaining_time as u32,
        name: character_name,
    };
    let response_packet = Packet::new(PacketType::PakccDeleteCharReply, &data)?;
    send_packet(stream, &response_packet).await?;

    Ok(())
}

pub(crate) async fn handle_select_char_req(
    stream: &mut TcpStream,
    packet: Packet,
    character_client: Arc<Mutex<CharacterClient>>,
    connection_service: Arc<ConnectionService>,
    connection_id: String,
) -> Result<(), Box<dyn Error + Send + Sync>> {
    use crate::packets::cli_select_char_req::*;
    use crate::packets::srv_billing_message::*;
    use crate::packets::srv_inventory_data::*;
    use crate::packets::srv_quest_data::*;
    use crate::packets::srv_select_char_reply::*;
    use crate::packets::srv_switch_server::*;
    use crate::types::{HotbarItem, StatusEffect};
    let request = CliSelectCharReq::decode(packet.payload.as_slice())?;
    debug!("{:?}", request);

    let mut user_id = "".to_string();
    let mut character_id_list: Vec<u32> = Vec::new();
    if let Some(mut state) = connection_service.get_connection_mut(&connection_id) {
        user_id = state.user_id.clone().expect("Missing user id in connection state");
        character_id_list = state
            .character_list
            .clone()
            .expect("Missing character id list");
        state.character_id = Some(request.char_id as i8);
    }

    let data = SrvSwitchServer {
        port: 0,
        session_id: 0,
        session_seed: 0,
        ip: NullTerminatedString("".to_string()),
    };
    let response_packet = Packet::new(PacketType::PakccSwitchServer, &data)?;
    send_packet(stream, &response_packet).await?;

    let mut character_client = character_client.lock().await;
    let character_data = character_client
        .get_character(
            &user_id.to_string(),
            character_id_list[request.char_id as usize] as u8,
        )
        .await?;

    let character = character_data.character.unwrap_or_default();

    let name = NullTerminatedString(character.name.clone());
    let money = character.money;
    let looks = character.looks.unwrap();
    let position = character.position.unwrap();
    let stats = character.stats.unwrap();
    let skills = character.skills;
    let items = character.items;
    let mut equipped_item_list: [EquippedItem; (MAX_VISIBLE_ITEMS as usize)] =
        core::array::from_fn(|i| EquippedItem::default());
    let mut inventory: [srv_inventory_data::Item; (MAX_ITEMS as usize)] =
        core::array::from_fn(|i| srv_inventory_data::Item::default());
    let mut skill_list: [u16; (MAX_SKILL_COUNT as usize)] = [0u16; MAX_SKILL_COUNT as usize];

    for index in 0..skills.len() {
        skill_list[index] = skills[index].id as u16;
    }

    for item in items {
        if item.slot < MAX_VISIBLE_ITEMS as i32 {
            let slot = convert_type_to_body_part(item.slot) as isize - 2;
            if slot >= 0 {
                equipped_item_list[slot as usize] = EquippedItem {
                    id: item.item_id as u16,
                    gem_opt: item.gem_option as u16,
                    socket: item.socket as i8,
                    grade: item.grade as u8,
                };
            }
        }

        inventory[item.slot as usize] = srv_inventory_data::Item {
            header: srv_inventory_data::Header {
                type_: item.item_type as u8,
                id: item.item_id as u16,
                is_created: item.is_created as u8,
            },
            data: srv_inventory_data::Data {
                gem_opt: item.gem_option as u16,
                life: item.life as u16,
                durability: item.durability as u8,
                has_socket: item.socket as u8,
                is_appraised: item.is_appraised as u8,
                refine: item.grade as u8,
                count: item.count as u32,
            },
        };
    }

    let mut effect_list: [StatusEffect; (MAX_STATUS_EFFECTS as usize)] =
        core::array::from_fn(|i| StatusEffect::default());
    let mut hotbar_list: [HotbarItem; (MAX_HOTBAR_ITEMS as usize)] =
        core::array::from_fn(|i| HotbarItem::default());
    let data = SrvSelectCharReply {
        race: looks.race as u8,
        map: position.map_id as u16,
        x: position.x * 100.0,
        y: position.y * 100.0,
        spawn: position.spawn_id as u16,
        body_face: looks.face as u32,
        body_hair: looks.hair as u32,
        equipped_items: equipped_item_list,
        stone: looks.stone as u8,
        face: looks.face as u8,
        hair: looks.hair as u8,
        job: stats.job as u16,
        faction_id: 0,
        faction_rank: 0,
        fame: 0,
        str: stats.str as u16,
        dex: stats.dex as u16,
        int: stats.int as u16,
        con: stats.con as u16,
        charm: stats.charm as u16,
        sense: stats.sense as u16,
        hp: stats.hp,
        mp: stats.mp,
        xp: stats.xp as u32,
        level: stats.level as u16,
        stat_points: stats.stat_points as u32,
        skill_points: stats.skill_points as u32,
        body_size: stats.body_size as u8,
        head_size: stats.head_size as u8,
        penalty_xp: stats.penalty_xp as u32,
        faction_fame: [0u16; 2],
        faction_points: [0u16; 10],
        guild_id: 0,
        guild_contribution: 0,
        guild_rank: 0,
        pk_flag: 0,
        stamina: stats.stamina as u16,
        effects: effect_list,
        pat_hp: stats.pat_hp as u16,
        pat_cooldown_time: stats.pat_cooldown_time as u32,
        skills: skill_list,
        hotbar: hotbar_list,
        tag: 100,
        name,
    };
    debug!("{:?}", data);
    let response_packet = Packet::new(PacketType::PakwcSelectCharReply, &data)?;
    send_packet(stream, &response_packet).await?;

    // here we build the inventory
    let data = SrvInventoryData {
        zuly: money,
        items: inventory,
    };
    let response_packet = Packet::new(PacketType::PakwcInventoryData, &data)?;
    send_packet(stream, &response_packet).await?;

    // Now we need to build the Quest data
    let mut quests: [srv_quest_data::Quest; (MAX_QUESTS as usize)] =
        core::array::from_fn(|i| srv_quest_data::Quest::default());
    let mut wishlist: [srv_quest_data::Item; (MAX_WISHLIST as usize)] =
        core::array::from_fn(|i| srv_quest_data::Item::default());

    let data = SrvQuestData {
        episodes: [0; (MAX_CONDITIONS_EPISODE as usize)],
        jobs: [0; (MAX_CONDITIONS_JOB as usize)],
        planets: [0; (MAX_CONDITIONS_PLANET as usize)],
        unions: [0; (MAX_CONDITIONS_UNION as usize)],
        quests,
        switches: [0; (MAX_SWITCHES as usize)],
        wishlist,
    };
    let response_packet = Packet::new(PacketType::PakwcQuestData, &data)?;
    send_packet(stream, &response_packet).await?;

    // Send the billing message (we don't actually use this so we just send the defaults to allow)
    let data = SrvBillingMessage {
        function_type: 0x1001,
        pay_flag: 2,
    };
    let response_packet = Packet::new(PacketType::PakwcBillingMessage, &data)?;
    send_packet(stream, &response_packet).await?;

    Ok(())
}