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# @version 0.3.10
"""
@title CryptoFromPool
@notice Price oracle for pools which contain cryptos and crvUSD. This is NOT suitable for minted crvUSD - only for lent out
@author Curve.Fi
@license MIT
"""
interface Pool:
    def price_oracle(i: uint256 = 0) -> uint256: view  # Universal method!


POOL: public(immutable(Pool))
BORROWED_IX: public(immutable(uint256))
COLLATERAL_IX: public(immutable(uint256))
N_COINS: public(immutable(uint256))
NO_ARGUMENT: public(immutable(bool))


@external
def __init__(
        pool: Pool,
        N: uint256,
        borrowed_ix: uint256,
        collateral_ix: uint256
    ):
    assert borrowed_ix != collateral_ix
    assert borrowed_ix < N
    assert collateral_ix < N
    POOL = pool
    N_COINS = N
    BORROWED_IX = borrowed_ix
    COLLATERAL_IX = collateral_ix

    no_argument: bool = False
    if N == 2:
        success: bool = False
        res: Bytes[32] = empty(Bytes[32])
        success, res = raw_call(
            pool.address,
            _abi_encode(empty(uint256), method_id=method_id("price_oracle(uint256)")),
            max_outsize=32, is_static_call=True, revert_on_failure=False)
        if not success:
            no_argument = True
    NO_ARGUMENT = no_argument


@internal
@view
def _raw_price() -> uint256:
    p_borrowed: uint256 = 10**18
    p_collateral: uint256 = 10**18

    if NO_ARGUMENT:
        p: uint256 = POOL.price_oracle()
        if COLLATERAL_IX > 0:
            p_collateral = p
        else:
            p_borrowed = p

    else:
        if BORROWED_IX > 0:
            p_borrowed = POOL.price_oracle(BORROWED_IX - 1)
        if COLLATERAL_IX > 0:
            p_collateral = POOL.price_oracle(COLLATERAL_IX - 1)

    return p_collateral * 10**18 / p_borrowed


@external
@view
def price() -> uint256:
    return self._raw_price()


@external
def price_w() -> uint256:
    return self._raw_price()

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[{"stateMutability":"nonpayable","type":"constructor","inputs":[{"name":"pool","type":"address"},{"name":"N","type":"uint256"},{"name":"borrowed_ix","type":"uint256"},{"name":"collateral_ix","type":"uint256"}],"outputs":[]},{"stateMutability":"view","type":"function","name":"price","inputs":[],"outputs":[{"name":"","type":"uint256"}]},{"stateMutability":"nonpayable","type":"function","name":"price_w","inputs":[],"outputs":[{"name":"","type":"uint256"}]},{"stateMutability":"view","type":"function","name":"POOL","inputs":[],"outputs":[{"name":"","type":"address"}]},{"stateMutability":"view","type":"function","name":"BORROWED_IX","inputs":[],"outputs":[{"name":"","type":"uint256"}]},{"stateMutability":"view","type":"function","name":"COLLATERAL_IX","inputs":[],"outputs":[{"name":"","type":"uint256"}]},{"stateMutability":"view","type":"function","name":"N_COINS","inputs":[],"outputs":[{"name":"","type":"uint256"}]},{"stateMutability":"view","type":"function","name":"NO_ARGUMENT","inputs":[],"outputs":[{"name":"","type":"bool"}]}]

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0x5f3560e01c60026007821660011b61027901601e395f51565b637535d2468118610036573461027557602061028960403960206040f35b63a035b1fe81186100fa573461027557602061005260e06100fe565b60e0f36100fa565b63bf5d248c81186100fa57346102755760206102a960403960206040f36100fa565b63fccecc21811861009a57346102755760206102c960403960206040f35b63ceb7f75981186100fa57346102755760206100b660e06100fe565b60e0f36100fa565b632935775081186100dc57346102755760206102e960403960206040f35b63f74f678081186100fa573461027557602061030960403960206040f35b5f5ffd5b670de0b6b3a7640000604052670de0b6b3a764000060605260206103095f395f516101e75760206102a95f395f51156101835760206102895f395f51636872765360805260206102a95f395f516001810381811161027557905060a052602060806024609c845afa610172573d5f5f3e3d5ffd5b60203d106102755760809050516040525b60206102c95f395f511561023f5760206102895f395f51636872765360805260206102c95f395f516001810381811161027557905060a052602060806024609c845afa6101d2573d5f5f3e3d5ffd5b60203d1061027557608090505160605261023f565b60206102895f395f516386fc88d360a052602060a0600460bc845afa61020f573d5f5f3e3d5ffd5b60203d106102755760a090505160805260206102c95f395f51156102385760805160605261023f565b6080516040525b606051670de0b6b3a7640000810281670de0b6b3a764000082041861027557905060405180156102755780820490509050815250565b5f80fd00be007c00fa00fa005a00fa001800fa0000000000000000000000004ebdf703948ddcea3b11f675b4d1fba9d2414a140000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000030000000000000000000000000000000000000000000000000000000000000000

0000000000000000000000004ebdf703948ddcea3b11f675b4d1fba9d2414a14000000000000000000000000000000000000000000000000000000000000000300000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002

-----Decoded View---------------
Arg [0] : pool (address): 0x4eBdF703948ddCEA3B11f675B4D1Fba9d2414A14
Arg [1] : N (uint256): 3
Arg [2] : borrowed_ix (uint256): 0
Arg [3] : collateral_ix (uint256): 2

-----Encoded View---------------
4 Constructor Arguments found :
Arg [0] : 0000000000000000000000004ebdf703948ddcea3b11f675b4d1fba9d2414a14
Arg [1] : 0000000000000000000000000000000000000000000000000000000000000003
Arg [2] : 0000000000000000000000000000000000000000000000000000000000000000
Arg [3] : 0000000000000000000000000000000000000000000000000000000000000002