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use crate::addons::MockApiBech32;
use bech32::Variant;
use cosmwasm_std::{Addr, Api, CanonicalAddr, RecoverPubkeyError, StdResult, VerificationError};

/// Implementation of the `Api` trait that uses [`Bech32m`] format
/// for humanizing canonical addresses.
///
/// [`Bech32m`]:https://github.com/bitcoin/bips/blob/master/bip-0350.mediawiki
pub struct MockApiBech32m(MockApiBech32);

impl MockApiBech32m {
    /// Returns `Api` implementation that uses specified prefix
    /// to generate addresses in **Bech32m** format.
    ///
    /// # Example
    ///
    /// ```
    /// use cw_multi_test::addons::MockApiBech32m;
    ///
    /// let api = MockApiBech32m::new("osmosis");
    /// let addr = api.addr_make("sender");
    /// assert_eq!(addr.as_str(),
    ///            "osmosis1pgm8hyk0pvphmlvfjc8wsvk4daluz5tgrw6pu5mfpemk74uxnx9qgv9940");
    /// ```
    pub fn new(prefix: &'static str) -> Self {
        Self(MockApiBech32::new_with_variant(prefix, Variant::Bech32m))
    }
}

impl Api for MockApiBech32m {
    /// Takes a human readable address in **Bech32m** format and checks if it is valid.
    ///
    /// If the validation succeeds, an `Addr` containing the same string as the input is returned.
    ///
    /// # Example
    ///
    /// ```
    /// use cosmwasm_std::Api;
    /// use cw_multi_test::addons::MockApiBech32m;
    ///
    /// let api = MockApiBech32m::new("osmosis");
    /// let addr = api.addr_make("sender");
    /// assert_eq!(api.addr_validate(addr.as_str()).unwrap().as_str(),
    ///            addr.as_str());
    /// ```
    fn addr_validate(&self, input: &str) -> StdResult<Addr> {
        self.0.addr_validate(input)
    }

    /// Takes a human readable address in **Bech32m** format and returns
    /// a canonical binary representation of it.
    ///
    /// # Example
    ///
    /// ```
    /// use cosmwasm_std::Api;
    /// use cw_multi_test::addons::MockApiBech32;
    ///
    /// let api = MockApiBech32::new("osmosis");
    /// let addr = api.addr_make("sender");
    /// assert_eq!(api.addr_canonicalize(addr.as_str()).unwrap().to_string(),
    ///            "0A367B92CF0B037DFD89960EE832D56F7FC151681BB41E53690E776F5786998A");
    /// ```
    fn addr_canonicalize(&self, input: &str) -> StdResult<CanonicalAddr> {
        self.0.addr_canonicalize(input)
    }

    /// Takes a canonical address and returns a human readable address in **Bech32m** format.
    ///
    /// This is the inverse operation of [`addr_canonicalize`].
    ///
    /// [`addr_canonicalize`]: MockApiBech32m::addr_canonicalize
    ///
    /// # Example
    ///
    /// ```
    /// use cosmwasm_std::Api;
    /// use cw_multi_test::addons::MockApiBech32m;
    ///
    /// let api = MockApiBech32m::new("osmosis");
    /// let addr = api.addr_make("sender");
    /// let canonical_addr = api.addr_canonicalize(addr.as_str()).unwrap();
    /// assert_eq!(api.addr_humanize(&canonical_addr).unwrap().as_str(),
    ///            addr.as_str());
    /// ```
    fn addr_humanize(&self, canonical: &CanonicalAddr) -> StdResult<Addr> {
        self.0.addr_humanize(canonical)
    }

    fn secp256k1_verify(
        &self,
        message_hash: &[u8],
        signature: &[u8],
        public_key: &[u8],
    ) -> Result<bool, VerificationError> {
        self.0.secp256k1_verify(message_hash, signature, public_key)
    }

    fn secp256k1_recover_pubkey(
        &self,
        message_hash: &[u8],
        signature: &[u8],
        recovery_param: u8,
    ) -> Result<Vec<u8>, RecoverPubkeyError> {
        self.0
            .secp256k1_recover_pubkey(message_hash, signature, recovery_param)
    }

    fn ed25519_verify(
        &self,
        message: &[u8],
        signature: &[u8],
        public_key: &[u8],
    ) -> Result<bool, VerificationError> {
        self.0.ed25519_verify(message, signature, public_key)
    }

    fn ed25519_batch_verify(
        &self,
        messages: &[&[u8]],
        signatures: &[&[u8]],
        public_keys: &[&[u8]],
    ) -> Result<bool, VerificationError> {
        self.0
            .ed25519_batch_verify(messages, signatures, public_keys)
    }

    fn debug(&self, message: &str) {
        self.0.debug(message)
    }
}

impl MockApiBech32m {
    /// Returns an address in **Bech32m** format, built from provided input string.
    ///
    /// # Example
    ///
    /// ```
    /// use cw_multi_test::addons::MockApiBech32m;
    ///
    /// let api = MockApiBech32m::new("osmosis");
    /// let addr = api.addr_make("sender");
    /// assert_eq!(addr.as_str(),
    ///            "osmosis1pgm8hyk0pvphmlvfjc8wsvk4daluz5tgrw6pu5mfpemk74uxnx9qgv9940");
    /// ```
    ///
    /// # Panics
    ///
    /// This function panics when generating a valid address in **Bech32**
    /// format is not possible, especially when prefix is too long or empty.
    pub fn addr_make(&self, input: &str) -> Addr {
        self.0.addr_make(input)
    }
}