use crate::config::{BedwarsConfig, Loc, TeamConfig, GeneratorConfig};
use crate::team::BedwarsTeam;
use crate::game::GameManager;

pub enum BedwarsCommand {
    SetLobby,
    SetSpawn { team: BedwarsTeam },
    SetBed { team: BedwarsTeam },
    SetShop { team: BedwarsTeam },
    SetUpgrades { team: BedwarsTeam },
    SetGenerator { team: BedwarsTeam },
    SetEnderchest { team: BedwarsTeam },
    AddGenerator { gen_type: String },
    Save,
    Start,
    Help,
}

impl BedwarsCommand {
    pub fn parse(args: &[String]) -> Result<Self, String> {
        if args.is_empty() {
            return Ok(Self::Help);
        }

        match args[0].to_lowercase().as_str() {
            "setlobby" => Ok(Self::SetLobby),
            "setspawn" => {
                if args.len() < 2 {
                    return Err("Usage: /bw setspawn <red|blue|purple|yellow>".to_string());
                }
                let team = BedwarsTeam::from_str(&args[1]).ok_or("Invalid team name")?;
                Ok(Self::SetSpawn { team })
            }
            "setbed" => {
                if args.len() < 2 {
                    return Err("Usage: /bw setbed <red|blue|purple|yellow>".to_string());
                }
                let team = BedwarsTeam::from_str(&args[1]).ok_or("Invalid team name")?;
                Ok(Self::SetBed { team })
            }
            "setshop" => {
                if args.len() < 2 {
                    return Err("Usage: /bw setshop <red|blue|purple|yellow>".to_string());
                }
                let team = BedwarsTeam::from_str(&args[1]).ok_or("Invalid team name")?;
                Ok(Self::SetShop { team })
            }
            "setupgrades" => {
                if args.len() < 2 {
                    return Err("Usage: /bw setupgrades <red|blue|purple|yellow>".to_string());
                }
                let team = BedwarsTeam::from_str(&args[1]).ok_or("Invalid team name")?;
                Ok(Self::SetUpgrades { team })
            }
            "setgenerator" => {
                if args.len() < 2 {
                    return Err("Usage: /bw setgenerator <red|blue|purple|yellow>".to_string());
                }
                let team = BedwarsTeam::from_str(&args[1]).ok_or("Invalid team name")?;
                Ok(Self::SetGenerator { team })
            }
            "setenderchest" => {
                if args.len() < 2 {
                    return Err("Usage: /bw setenderchest <red|blue|purple|yellow>".to_string());
                }
                let team = BedwarsTeam::from_str(&args[1]).ok_or("Invalid team name")?;
                Ok(Self::SetEnderchest { team })
            }
            "addgenerator" => {
                if args.len() < 2 {
                    return Err("Usage: /bw addgenerator <diamond|emerald>".to_string());
                }
                let gen_type = args[1].to_lowercase();
                if gen_type != "diamond" && gen_type != "emerald" {
                    return Err("Generator type must be 'diamond' or 'emerald'".to_string());
                }
                Ok(Self::AddGenerator { gen_type })
            }
            "save" => Ok(Self::Save),
            "start" => Ok(Self::Start),
            "help" => Ok(Self::Help),
            _ => Err("Unknown command. Type /bw help for options.".to_string()),
        }
    }

    pub fn execute(
        &self,
        config: &mut BedwarsConfig,
        game_manager: &mut GameManager,
        player_loc: Loc,
        target_block_loc: Option<Loc>,
    ) -> Result<String, String> {
        match self {
            Self::SetLobby => {
                config.locations.lobby = player_loc;
                Ok("Lobby location updated in config".to_string())
            }
            Self::SetSpawn { team } => {
                let team_name = team.get_name().to_lowercase();
                let team_conf = config.locations.teams.entry(team_name.clone()).or_insert_with(|| TeamConfig {
                    enabled: true,
                    spawn: player_loc.clone(),
                    bed: player_loc.clone(),
                    generator: player_loc.clone(),
                    shop: player_loc.clone(),
                    upgrades: player_loc.clone(),
                    enderchest: player_loc.clone(),
                });
                team_conf.spawn = player_loc;
                team_conf.enabled = true;
                game_manager.enable_team(*team);
                Ok(format!("Spawn for team {} set and enabled", team.get_name()))
            }
            Self::SetBed { team } => {
                let block_loc = target_block_loc.ok_or("You must look at a bed block")?;
                let team_name = team.get_name().to_lowercase();
                if let Some(t_conf) = config.locations.teams.get_mut(&team_name) {
                    t_conf.bed = block_loc;
                    Ok(format!("Bed for team {} set", team.get_name()))
                } else {
                    Err("Team not configured yet. Set spawn first.".to_string())
                }
            }
            Self::SetShop { team } => {
                let team_name = team.get_name().to_lowercase();
                if let Some(t_conf) = config.locations.teams.get_mut(&team_name) {
                    t_conf.shop = player_loc;
                    Ok(format!("Shop for team {} set", team.get_name()))
                } else {
                    Err("Team not configured yet. Set spawn first.".to_string())
                }
            }
            Self::SetUpgrades { team } => {
                let team_name = team.get_name().to_lowercase();
                if let Some(t_conf) = config.locations.teams.get_mut(&team_name) {
                    t_conf.upgrades = player_loc;
                    Ok(format!("Upgrades for team {} set", team.get_name()))
                } else {
                    Err("Team not configured yet. Set spawn first.".to_string())
                }
            }
            Self::SetGenerator { team } => {
                let team_name = team.get_name().to_lowercase();
                if let Some(t_conf) = config.locations.teams.get_mut(&team_name) {
                    t_conf.generator = player_loc;
                    Ok(format!("Generator for team {} set", team.get_name()))
                } else {
                    Err("Team not configured yet. Set spawn first.".to_string())
                }
            }
            Self::SetEnderchest { team } => {
                let team_name = team.get_name().to_lowercase();
                if let Some(t_conf) = config.locations.teams.get_mut(&team_name) {
                    t_conf.enderchest = player_loc;
                    Ok(format!("Ender Chest for team {} set", team.get_name()))
                } else {
                    Err("Team not configured yet. Set spawn first.".to_string())
                }
            }
            Self::AddGenerator { gen_type } => {
                config.locations.generators.push(GeneratorConfig {
                    x: player_loc.x,
                    y: player_loc.y,
                    z: player_loc.z,
                    generator_type: gen_type.to_uppercase(),
                });
                Ok(format!("Added a {} generator at your location", gen_type.to_uppercase()))
            }
            Self::Save => {
                // Return string representation to write to file
                Ok("Config ready to save".to_string())
            }
            Self::Start => {
                game_manager.start_game()?;
                Ok("Match starting now!".to_string())
            }
            Self::Help => {
                let mut help = String::new();
                help.push_str("§d§m================ §b§lBEDWARS SETUP (RUST) §d§m================\n");
                help.push_str("§d/bw setlobby §7- Set waiting lobby coordinate\n");
                help.push_str("§d/bw setspawn <team> §7- Set team player spawn point\n");
                help.push_str("§d/bw setbed <team> §7- Register team bed (look at block)\n");
                help.push_str("§d/bw setshop <team> §7- Set shop NPC position\n");
                help.push_str("§d/bw setupgrades <team> §7- Set upgrades NPC position\n");
                help.push_str("§d/bw setgenerator <team> §7- Set base spawner location\n");
                help.push_str("§d/bw setenderchest <team> §7- Set team Ender Chest\n");
                help.push_str("§d/bw addgenerator <diamond|emerald> §7- Add generator\n");
                help.push_str("§d/bw save §7- Save config file\n");
                help.push_str("§d/bw start §7- Force start game immediately\n");
                help.push_str("§d§m================================================\n");
                Ok(help)
            }
        }
    }
}