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# @version 0.2.15
"""
@title Token Minter
@author Hundred Finance
@license MIT
"""

interface LiquidityGauge:
    # Presumably, other gauges will provide the same interfaces
    def integrate_fraction(addr: address) -> uint256: view
    def user_checkpoint(addr: address) -> bool: nonpayable

interface MERC20:
    def mint(_to: address, _value: uint256) -> bool: nonpayable

interface GaugeController:
    def gauge_types(addr: address) -> int128: view


event Minted:
    recipient: indexed(address)
    gauge: address
    minted: uint256


treasury: public(address)
controller: public(address)

# user -> gauge -> value
minted: public(HashMap[address, HashMap[address, uint256]])

# minter -> user -> can mint?
allowed_to_mint_for: public(HashMap[address, HashMap[address, bool]])


@external
def __init__(_treasury: address, _controller: address):
    self.treasury = _treasury
    self.controller = _controller


@internal
def _mint_for(gauge_addr: address, _for: address):
    assert GaugeController(self.controller).gauge_types(gauge_addr) >= 0  # dev: gauge is not added

    LiquidityGauge(gauge_addr).user_checkpoint(_for)
    total_mint: uint256 = LiquidityGauge(gauge_addr).integrate_fraction(_for)
    to_mint: uint256 = total_mint - self.minted[_for][gauge_addr]

    if to_mint != 0:
        MERC20(self.treasury).mint(_for, to_mint)
        self.minted[_for][gauge_addr] = total_mint

        log Minted(_for, gauge_addr, total_mint)


@external
@nonreentrant('lock')
def mint(gauge_addr: address):
    """
    @notice Mint everything which belongs to `msg.sender` and send to them
    @param gauge_addr `LiquidityGauge` address to get mintable amount from
    """
    self._mint_for(gauge_addr, msg.sender)


@external
@nonreentrant('lock')
def mint_many(gauge_addrs: address[8]):
    """
    @notice Mint everything which belongs to `msg.sender` across multiple gauges
    @param gauge_addrs List of `LiquidityGauge` addresses
    """
    for i in range(8):
        if gauge_addrs[i] == ZERO_ADDRESS:
            break
        self._mint_for(gauge_addrs[i], msg.sender)


@external
@nonreentrant('lock')
def mint_for(gauge_addr: address, _for: address):
    """
    @notice Mint tokens for `_for`
    @dev Only possible when `msg.sender` has been approved via `toggle_approve_mint`
    @param gauge_addr `LiquidityGauge` address to get mintable amount from
    @param _for Address to mint to
    """
    if self.allowed_to_mint_for[msg.sender][_for]:
        self._mint_for(gauge_addr, _for)


@external
def toggle_approve_mint(minting_user: address):
    """
    @notice allow `minting_user` to mint for `msg.sender`
    @param minting_user Address to toggle permission for
    """
    self.allowed_to_mint_for[minting_user][msg.sender] = not self.allowed_to_mint_for[minting_user][msg.sender]

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[{"name":"Minted","inputs":[{"name":"recipient","type":"address","indexed":true},{"name":"gauge","type":"address","indexed":false},{"name":"minted","type":"uint256","indexed":false}],"anonymous":false,"type":"event"},{"stateMutability":"nonpayable","type":"constructor","inputs":[{"name":"_treasury","type":"address"},{"name":"_controller","type":"address"}],"outputs":[]},{"stateMutability":"nonpayable","type":"function","name":"mint","inputs":[{"name":"gauge_addr","type":"address"}],"outputs":[],"gas":112051},{"stateMutability":"nonpayable","type":"function","name":"mint_many","inputs":[{"name":"gauge_addrs","type":"address[8]"}],"outputs":[],"gas":495727},{"stateMutability":"nonpayable","type":"function","name":"mint_for","inputs":[{"name":"gauge_addr","type":"address"},{"name":"_for","type":"address"}],"outputs":[],"gas":114593},{"stateMutability":"nonpayable","type":"function","name":"toggle_approve_mint","inputs":[{"name":"minting_user","type":"address"}],"outputs":[],"gas":37994},{"stateMutability":"view","type":"function","name":"treasury","inputs":[],"outputs":[{"name":"","type":"address"}],"gas":2508},{"stateMutability":"view","type":"function","name":"controller","inputs":[],"outputs":[{"name":"","type":"address"}],"gas":2538},{"stateMutability":"view","type":"function","name":"minted","inputs":[{"name":"arg0","type":"address"},{"name":"arg1","type":"address"}],"outputs":[{"name":"","type":"uint256"}],"gas":2998},{"stateMutability":"view","type":"function","name":"allowed_to_mint_for","inputs":[{"name":"arg0","type":"address"},{"name":"arg1","type":"address"}],"outputs":[{"name":"","type":"bool"}],"gas":3028}]

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000000000000000000000000d7a8de0672131668be0366cf517dbd1c369ce200000000000000000000000000ca78ca5c3da9a5a4c960c1757456e99d9f1bc76d

-----Decoded View---------------
Arg [0] : _treasury (address): 0xD7a8De0672131668be0366cF517DbD1c369cE200
Arg [1] : _controller (address): 0xca78ca5C3Da9a5a4C960C1757456E99d9F1bc76d

-----Encoded View---------------
2 Constructor Arguments found :
Arg [0] : 000000000000000000000000d7a8de0672131668be0366cf517dbd1c369ce200
Arg [1] : 000000000000000000000000ca78ca5c3da9a5a4c960c1757456e99d9f1bc76d