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from typing import Optional

from ._eip712_base import (
    is_address,
    is_block_number,
    is_bytes16,
    is_chain_id,
    is_eth_privkey,
    is_signature,
    recover,
    sign,
)


def _create_eip712_api_publish(
    chainId: int,
    verifyingContract: bytes,
    member: bytes,
    published: int,
    catalogId: bytes,
    apiId: bytes,
    schema: str,
    meta: Optional[str],
) -> dict:
    """

    :param chainId:
    :param verifyingContract:
    :param member:
    :param published:
    :param catalogId:
    :param apiId:
    :param schema:
    :param meta:
    :return:
    """
    assert is_chain_id(chainId)
    assert is_address(verifyingContract)
    assert is_address(member)
    assert is_block_number(published)
    assert is_bytes16(catalogId)
    assert is_bytes16(apiId)
    assert type(schema) == str
    assert type(meta) == str

    data = {
        "types": {
            "EIP712Domain": [
                {"name": "name", "type": "string"},
                {"name": "version", "type": "string"},
            ],
            "EIP712ApiPublish": [
                {"name": "chainId", "type": "uint256"},
                {"name": "verifyingContract", "type": "address"},
                {"name": "member", "type": "address"},
                {"name": "published", "type": "uint256"},
                {"name": "catalogId", "type": "bytes16"},
                {"name": "apiId", "type": "bytes16"},
                {"name": "schema", "type": "string"},
                {"name": "meta", "type": "string"},
            ],
        },
        "primaryType": "EIP712ApiPublish",
        "domain": {
            "name": "XBR",
            "version": "1",
        },
        "message": {
            "chainId": chainId,
            "verifyingContract": verifyingContract,
            "member": member,
            "published": published,
            "catalogId": catalogId,
            "apiId": apiId,
            "schema": schema,
            "meta": meta or "",
        },
    }

    return data


def sign_eip712_api_publish(
    eth_privkey: bytes,
    chainId: int,
    verifyingContract: bytes,
    member: bytes,
    published: int,
    catalogId: bytes,
    apiId: bytes,
    schema: str,
    meta: Optional[str],
) -> bytes:
    """

    :param eth_privkey: Ethereum address of buyer (a raw 20 bytes Ethereum address).
    :type eth_privkey: bytes

    :return: The signature according to EIP712 (32+32+1 raw bytes).
    :rtype: bytes
    """
    assert is_eth_privkey(eth_privkey)

    data = _create_eip712_api_publish(chainId, verifyingContract, member, published, catalogId, apiId, schema, meta)
    return sign(eth_privkey, data)


def recover_eip712_api_publish(
    chainId: int,
    verifyingContract: bytes,
    member: bytes,
    published: int,
    catalogId: bytes,
    apiId: bytes,
    schema: str,
    meta: Optional[str],
    signature: bytes,
) -> bytes:
    """
    Recover the signer address the given EIP712 signature was signed with.

    :return: The (computed) signer address the signature was signed with.
    :rtype: bytes
    """
    assert is_signature(signature)

    data = _create_eip712_api_publish(chainId, verifyingContract, member, published, catalogId, apiId, schema, meta)
    return recover(data, signature)
