// waves_engine · spec v0.1 · not deployed yet
use anchor_lang::prelude::*;

#[program]
pub mod waves_engine {
    use super::*;

    /// Called once by the launcher, in the same transaction
    /// that creates the token. The engine is fixed here.
    pub fn create_engine(ctx: Context<CreateEngine>, kind: EngineKind) -> Result<()> { .. }

    /// Permissionless. Any wallet can call it once 300 s have
    /// passed, and it pays that wallet a fixed bounty.
    pub fn run_cycle(ctx: Context<RunCycle>) -> Result<()> {
        let cfg = &mut ctx.accounts.config;
        let now = Clock::get()?.unix_timestamp;
        require!(now - cfg.last_cycle >= 300, WavesError::TooEarly);
        cfg.last_cycle = now;
        match cfg.kind { .. }  // route the fee vault to the engine
    }
}

/// PDA, seeds = ["engine", mint]
#[account]
pub struct EngineConfig {
    pub mint: Pubkey,
    pub kind: EngineKind,   // no instruction writes this again
    pub last_cycle: i64,
    pub cycles: u64,
    pub routed: u64,       // lamports sent through the engine
    pub bump: u8,
}

pub enum EngineKind { Deepen, Burn, Staking, Holders }