use anchor_lang::prelude::*;

use crate::{error::CustomErrors, DataRegistry, Tournament, DATA_REGISTRY_SEED};


pub fn handler(ctx:Context<AddTournament>, id:u64, start_time:String)->Result<()>{
    require!(ctx.accounts.payer.key() == ctx.accounts.data_registry.authority, CustomErrors::Unauthorized);
    require!(!ctx.accounts.data_registry.tournament_ids.contains(&id), CustomErrors::ExistingTournament);

    let tournament_account = &mut ctx.accounts.tournament_account;
    let data_reg = &mut ctx.accounts.data_registry;
    tournament_account.id = id;
    tournament_account.start_time = start_time;

    data_reg.tournament_ids.push(id);
    
    Ok(())
}

#[derive(Accounts)]
#[instruction(id:u64)]
pub struct AddTournament<'info>{

    #[account(mut)]
    pub payer: Signer<'info>,
    
    #[account(
        init,
        payer= payer,
        space = Tournament::INIT_SPACE,
        seeds = [b"tournament",id.to_le_bytes().as_ref()],
        bump
    )]
    pub tournament_account: Account<'info,Tournament>,

    #[account(
        mut,
        seeds = [DATA_REGISTRY_SEED],
        bump
    )]
    pub data_registry: Account<'info, DataRegistry>,

    pub system_program: Program<'info, System>
}