cow-settlement-client 0.4.0

Off-chain client helpers for building CoW Protocol Solana settlement program instructions.
Documentation 
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//! Builder for the `CreateSelfOrder` instruction.

use cow_settlement_interface::{
    data::intent::{EncodedOrderIntent, OrderIntent},
    pda::{order::find_order_pda, state::find_state_pda},
    Instruction, Pubkey,
};

/// Places `intent` as an order owned by the settlement state PDA, gated by the
/// self-order `authority`. `intent`'s owner must be the state PDA and it
/// must be flagged `created_on_chain`, or the program rejects it; `created_by`
/// funds the order PDA's rent.
pub struct CreateSelfOrder<'a> {
    pub program_id: Pubkey,
    pub authority: Pubkey,
    pub created_by: Pubkey,
    pub intent: &'a OrderIntent,
}

impl From<CreateSelfOrder<'_>> for Instruction {
    fn from(builder: CreateSelfOrder<'_>) -> Self {
        let encoded = EncodedOrderIntent::from(builder.intent);
        let (order_pda, _bump) = find_order_pda(&builder.program_id, &encoded.hash());
        let (state_pda, _bump) = find_state_pda(&builder.program_id);
        let intent_bytes: [u8; EncodedOrderIntent::SIZE] = (&encoded).into();
        cow_settlement_interface::instruction::create_self_order::CreateSelfOrder {
            program_id: builder.program_id,
            authority: builder.authority,
            created_by: builder.created_by,
            state_pda,
            order_pda,
            intent_bytes,
        }
        .into()
    }
}