cw1155 0.16.0

Definition and types for the CosmWasm-1155 interface
Documentation 
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use cosmwasm_schema::cw_serde;
use cosmwasm_std::{to_binary, Binary, CosmosMsg, StdResult, Uint128, WasmMsg};

use crate::msg::TokenId;

/// Cw1155ReceiveMsg should be de/serialized under `Receive()` variant in a ExecuteMsg
#[cw_serde]

pub struct Cw1155ReceiveMsg {
    /// The account that executed the send message
    pub operator: String,
    /// The account that the token transfered from
    pub from: Option<String>,
    pub token_id: TokenId,
    pub amount: Uint128,
    pub msg: Binary,
}

impl Cw1155ReceiveMsg {
    /// serializes the message
    pub fn into_binary(self) -> StdResult<Binary> {
        let msg = ReceiverExecuteMsg::Receive(self);
        to_binary(&msg)
    }

    /// creates a cosmos_msg sending this struct to the named contract
    pub fn into_cosmos_msg<T: Into<String>>(self, contract_addr: T) -> StdResult<CosmosMsg> {
        let msg = self.into_binary()?;
        let execute = WasmMsg::Execute {
            contract_addr: contract_addr.into(),
            msg,
            funds: vec![],
        };
        Ok(execute.into())
    }
}

/// Cw1155BatchReceiveMsg should be de/serialized under `BatchReceive()` variant in a ExecuteMsg
#[cw_serde]

pub struct Cw1155BatchReceiveMsg {
    pub operator: String,
    pub from: Option<String>,
    pub batch: Vec<(TokenId, Uint128)>,
    pub msg: Binary,
}

impl Cw1155BatchReceiveMsg {
    /// serializes the message
    pub fn into_binary(self) -> StdResult<Binary> {
        let msg = ReceiverExecuteMsg::BatchReceive(self);
        to_binary(&msg)
    }

    /// creates a cosmos_msg sending this struct to the named contract
    pub fn into_cosmos_msg<T: Into<String>>(self, contract_addr: T) -> StdResult<CosmosMsg> {
        let msg = self.into_binary()?;
        let execute = WasmMsg::Execute {
            contract_addr: contract_addr.into(),
            msg,
            funds: vec![],
        };
        Ok(execute.into())
    }
}

// This is just a helper to properly serialize the above message
#[cw_serde]

enum ReceiverExecuteMsg {
    Receive(Cw1155ReceiveMsg),
    BatchReceive(Cw1155BatchReceiveMsg),
}