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/*
    Hurry Curry! - a game about cooking
    Copyright 2024 metamuffin

    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, version 3 of the License only.

    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 crate::{entity::bot::BotDriver, server::Server};
use anyhow::{anyhow, bail, Result};
use clap::{Parser, ValueEnum};
use hurrycurry_bot::algos::ALGO_CONSTRUCTORS;
use hurrycurry_protocol::{Message, PacketC, PlayerID};
use std::time::Duration;

#[derive(Parser)]
#[clap(multicall = true)]
enum Command {
    /// Start a new game
    Start {
        /// Gamedata specification
        #[arg(default_value = "junior")]
        spec: String,
        /// Duration in seconds
        #[arg(default_value = "420")]
        timer: u64,
    },
    /// Abort the current game
    End,
    /// Download recipe/map's source declaration
    Download {
        /// Resource kind
        #[arg(value_enum)]
        r#type: DownloadType,
        /// Name
        name: String,
    },
    /// List all recipes and maps
    List,
    /// Send an effect
    Effect { name: String },
    /// Send an item
    Item { name: String },
    /// Reload the resource index
    ReloadIndex,
    #[clap(alias = "summon-bot", alias = "spawn-bot")]
    CreateBot { algo: String, name: Option<String> },
    /// Reload the current map
    #[clap(alias = "r")]
    Reload,
}

#[derive(ValueEnum, Clone)]
enum DownloadType {
    Map,
    Recipes,
}

impl Server {
    pub async fn handle_command_parse(&mut self, player: PlayerID, command: &str) -> Result<()> {
        for line in command.split("\n") {
            self.handle_command(
                player,
                Command::try_parse_from(
                    shlex::split(line)
                        .ok_or(anyhow!("quoting invalid"))?
                        .into_iter(),
                )?,
            )
            .await?;
        }
        Ok(())
    }
    async fn handle_command(&mut self, player: PlayerID, command: Command) -> Result<()> {
        match command {
            Command::Start { spec, timer } => {
                let data = self.index.generate(&spec).await?;
                self.load(data, Some(Duration::from_secs(timer)));
            }
            Command::End => {
                self.tx
                    .send(PacketC::ServerMessage {
                        text: format!(
                            "Game was aborted by {}.",
                            self.game
                                .players
                                .get(&player)
                                .ok_or(anyhow!("player missing"))?
                                .name
                        ),
                    })
                    .ok();
                self.load(self.index.generate("lobby").await?, None);
            }
            Command::Reload => {
                if self.count_chefs() > 1 {
                    bail!("must be at most one player to reload");
                }
                self.load(
                    self.index.generate(&self.game.data.current_map).await?,
                    None,
                );
            }
            Command::ReloadIndex => {
                self.index.reload().await?;
            }
            Command::Download { r#type, name } => {
                let source = match r#type {
                    DownloadType::Map => self.index.read_map(&name).await,
                    DownloadType::Recipes => self.index.read_recipes(&name).await,
                }?;
                bail!("{source}");
            }
            Command::List => {
                bail!(
                    "Maps: {:?}\nRecipes: {:?}",
                    self.index.maps.keys().collect::<Vec<_>>(),
                    self.index.recipes
                )
            }
            Command::Effect { name } => {
                self.tx
                    .send(PacketC::Communicate {
                        player,
                        message: Some(Message::Effect(name)),
                        timeout: None,
                    })
                    .ok();
            }
            Command::Item { name } => {
                let item = self
                    .game
                    .data
                    .get_item_by_name(&name)
                    .ok_or(anyhow!("unknown item"))?;
                self.tx
                    .send(PacketC::Communicate {
                        player,
                        message: Some(Message::Item(item)),
                        timeout: None,
                    })
                    .ok();
            }
            Command::CreateBot { algo, name } => {
                let (aname, cons) = ALGO_CONSTRUCTORS
                    .iter()
                    .find(|(name, _)| *name == algo.as_str())
                    .ok_or(anyhow!("algo name unknown"))?;
                let algo = cons();
                self.entities.push(Box::new(BotDriver::new(
                    format!("{}-bot", name.unwrap_or((*aname).to_owned())),
                    51,
                    algo,
                )));
            }
        }
        Ok(())
    }
}