{"fileName":"Crowdloan.sol","contractName":"Crowdloan","source":"pragma solidity 0.5.11;\n\nimport \"zos-lib/contracts/Initializable.sol\";\nimport \"openzeppelin-eth/contracts/math/SafeMath.sol\";\nimport \"openzeppelin-eth/contracts/token/ERC20/IERC20.sol\";\nimport \"openzeppelin-eth/contracts/token/ERC20/SafeERC20.sol\";\n\ncontract Crowdloan is Initializable {\n    using SafeMath for uint256;\n    using SafeERC20 for IERC20;\n\n    // Loan terms\n    uint256 public crowdfundStart;\n    uint256 public crowdfundEnd; // Last time contributions are accepted\n    uint256 public crowdfundDuration;\n    address public borrower;\n    IERC20 public token;\n    uint256 public principalRequested;\n    uint256 public repaymentCap;\n    string public loanMetadataUrl;\n\n    // Contributor tracking\n    mapping(address => uint256) public amountContributed;\n    uint256 public totalContributed;\n    uint256 public principalWithdrawn;\n\n    // Repayment tracking\n    uint256 public amountRepaid;\n    mapping(address => uint256) public repaymentWithdrawn;\n    uint256 public totalRepaymentWithdrawn;\n\n    // Events\n    event Fund(address sender, uint256 amount);\n    event WithdrawPrincipal(address borrower, uint256 amount);\n    event WithdrawRepayment(address lender, uint256 amount);\n    event Repay(uint256 amount);\n    event StartCrowdfund(uint256 crowdfundStart);\n\n    function initialize(\n        address _borrower,\n        IERC20 _token,\n        uint256 _principalRequested,\n        uint256 _repaymentCap,\n        uint256 _duration,\n        string calldata _loanMetadataUrl\n    ) external initializer {\n        borrower = _borrower;\n        crowdfundDuration = _duration;\n        token = _token;\n        principalRequested = _principalRequested;\n        loanMetadataUrl = _loanMetadataUrl;\n        repaymentCap = _repaymentCap;\n    }\n\n    /// @dev During the crowdfund, anyone can fund and get repayment rights in proportion to their contribution\n    function fund(uint256 amount) external {\n        _onlyAfterCrowdfundStart();\n        _onlyBeforeCrowdfundEnd();\n\n        require(amount > 0, \"Fund amount cannot be zero\");\n\n        totalContributed = totalContributed.add(amount);\n        require(\n            totalContributed <= principalRequested,\n            \"Your contribution would exceed the total amount requested.\"\n        );\n\n        amountContributed[msg.sender] = amountContributed[msg.sender].add(amount);\n\n        token.safeTransferFrom(msg.sender, address(this), amount);\n\n        emit Fund(msg.sender, amount);\n    }\n\n    /// @dev Borrower can withdraw currently aquired principal in any proportion, and any time during the crowdfund for flexibility.\n    /// This DOES NOT affect the total principal that can be raised or the loan terms, it merely provides cash flow.\n    function withdrawPrincipal(uint256 amount) external {\n        _onlyBorrower();\n\n        // FIX DONATIONS!\n        uint256 tokenBalance = token.balanceOf(address(this));\n\n        require(amount <= tokenBalance, \"Insufficent tokens to withdraw\");\n\n        if (amountRepaid > 0) {\n            require(\n                tokenBalance.sub(amount) >= amountRepaid.sub(totalRepaymentWithdrawn),\n                \"Withdrawal will lead to repayment inbalance\"\n            );\n        }\n\n        principalWithdrawn = principalWithdrawn.add(amount);\n        token.safeTransfer(msg.sender, amount);\n\n        emit WithdrawPrincipal(msg.sender, amount);\n    }\n\n    /// @dev Anyone can make repayments on behalf of the borrower\n    function repay(uint256 amount) external {\n        _onlyAfterCrowdfundEnd();\n\n        require(amount > 0, \"Repayment amount cannot be zero\");\n        require(amountRepaid.add(amount) <= repaymentCap, \"Must not exceed repayment cap\");\n\n        amountRepaid = amountRepaid.add(amount);\n        token.safeTransferFrom(msg.sender, address(this), amount);\n\n        emit Repay(amount);\n    }\n\n    /// @dev Lenders can withdraw their proportional stake from repayments after the crowdfund ends\n    function withdrawRepayment() external {\n        _onlyAfterCrowdfundEnd();\n\n        uint256 totalOwed = amountRepaid.mul(amountContributed[msg.sender]).div(totalContributed);\n        uint256 amount = totalOwed.sub(repaymentWithdrawn[msg.sender]);\n        require(amount > 0, \"Withdrawal amount cannot be zero\");\n\n        repaymentWithdrawn[msg.sender] = totalOwed;\n        totalRepaymentWithdrawn = totalRepaymentWithdrawn.add(amount);\n\n        token.safeTransfer(msg.sender, amount);\n\n        emit WithdrawRepayment(msg.sender, amount);\n    }\n\n    /// @dev Borrower can start the crowdfund once\n    function startCrowdfund() external {\n        _onlyBorrower();\n        _onlyBeforeCrowdfundStart();\n\n        crowdfundStart = now;\n        crowdfundEnd = now + crowdfundDuration;\n\n        emit StartCrowdfund(now);\n    }\n\n    function _onlyBorrower() internal view {\n        require(msg.sender == borrower, \"Only the borrower can call function.\");\n    }\n\n    function _onlyBeforeCrowdfundStart() internal view {\n        require(crowdfundStart == 0, \"Only before crowdfund start\");\n    }\n\n    function _onlyAfterCrowdfundStart() internal view {\n        require(crowdfundStart != 0, \"Only after crowdfund start\");\n    }\n\n    function _onlyBeforeCrowdfundEnd() internal view {\n        require(now <= crowdfundEnd, \"Only before crowdfund end\");\n    }\n\n    function _onlyAfterCrowdfundEnd() internal view {\n        require(crowdfundStart != 0 && now > crowdfundEnd, \"Only after crowdfund end.\");\n    }\n}\n","sourcePath":"contracts/crowdloan/Crowdloan.sol","sourceMap":"250:5147:0:-;;;;8:9:-1;5:2;;;30:1;27;20:12;5:2;250:5147:0;;;;;;;;;;","deployedSourceMap":"250:5147:0:-;;;;8:9:-1;5:2;;;30:1;27;20:12;5:2;250:5147:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;769:31;;;:::i;:::-;;;;;;;;;;;;;;;;;;;964:38;;;:::i;:::-;;;;;;;;;;;;;;;;;;;614:27;;;:::i;:::-;;;;;;;;;;;;;;;;;;;711:52;;;;;;13:2:-1;8:3;5:11;2:2;;;29:1;26;19:12;2:2;711:52:0;;;;;;;;;;;;;;;;;;;:::i;:::-;;;;;;;;;;;;;;;;;;;3412:384;;;;;;13:2:-1;8:3;5:11;2:2;;;29:1;26;19:12;2:2;3412:384:0;;;;;;;;;;;;;;;;;:::i;:::-;;2699:641;;;;;;13:2:-1;8:3;5:11;2:2;;;29:1;26;19:12;2:2;2699:641:0;;;;;;;;;;;;;;;;;:::i;:::-;;3902:542;;;:::i;:::-;;905:53;;;;;;13:2:-1;8:3;5:11;2:2;;;29:1;26;19:12;2:2;905:53:0;;;;;;;;;;;;;;;;;;;:::i;:::-;;;;;;;;;;;;;;;;;;;521:23;;;:::i;:::-;;;;;;;;;;;;;;;;;;;;;;;410:27;;;:::i;:::-;;;;;;;;;;;;;;;;;;;375:29;;;:::i;:::-;;;;;;;;;;;;;;;;;;;575:33;;;:::i;:::-;;;;;;;;;;;;;;;;;;;4501:218;;;:::i;:::-;;1279:466;;;;;;13:3:-1;8;5:12;2:2;;;30:1;27;20:12;2:2;1279:466:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;21:11:-1;8;5:28;2:2;;;46:1;43;36:12;2:2;1279:466:0;;35:9:-1;28:4;12:14;8:25;5:40;2:2;;;58:1;55;48:12;2:2;1279:466:0;;;;;;100:9:-1;95:1;81:12;77:20;67:8;63:35;60:50;39:11;25:12;22:29;11:107;8:2;;;131:1;128;121:12;8:2;1279:466:0;;;;;;;;;;;;;;:::i;:::-;;806:33;;;:::i;:::-;;;;;;;;;;;;;;;;;;;1863:580;;;;;;13:2:-1;8:3;5:11;2:2;;;29:1;26;19:12;2:2;1863:580:0;;;;;;;;;;;;;;;;;:::i;:::-;;483:32;;;:::i;:::-;;;;;;;;;;;;;;;;;;;647:29;;;:::i;:::-;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;23:1:-1;8:100;33:3;30:1;27:10;8:100;;;99:1;94:3;90:11;84:18;80:1;75:3;71:11;64:39;8:100;52:2;49:1;45:10;40:15;;8:100;;;12:14;647:29:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;872:27;;;:::i;:::-;;;;;;;;;;;;;;;;;;;550:19;;;:::i;:::-;;;;;;;;;;;;;;;;;;;;;;;769:31;;;;;;:::o;964:38::-;;;;;;:::o;614:27::-;;;;;;:::o;711:52::-;;;;;;;;;;;;;;;;;;;:::o;3412:384::-;3462:24;:22;:24;;:::i;:::-;3514:1;3505:6;:10;3497:54;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;3597:12;;;;3569:24;3586:6;3569:12;;;;:16;;:24;;;;:::i;:::-;:40;;3561:82;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;3669:24;3686:6;3669:12;;;;:16;;:24;;;;:::i;:::-;3654:12;;:39;;;;;;;3703:57;3726:10;3746:4;3753:6;3703:5;;;;;;;;;;;:22;;;;:57;;;;;;:::i;:::-;3776:13;3782:6;3776:13;;;;;;;;;;;;;;;;;;3412:384;;:::o;2699:641::-;2761:15;:13;:15;;:::i;:::-;2813:20;2836:5;;;;;;;;;;;:15;;;2860:4;2836:30;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;8:9:-1;5:2;;;30:1;27;20:12;5:2;2836:30:0;;;;8:9:-1;5:2;;;45:16;42:1;39;24:38;77:16;74:1;67:27;5:2;2836:30:0;;;;;;;13:2:-1;8:3;5:11;2:2;;;29:1;26;19:12;2:2;2836:30:0;;;;;;;;;;;;;;;;2813:53;;2895:12;2885:6;:22;;2877:65;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;2972:1;2957:12;;;;:16;2953:218;;;3042:41;3059:23;;;;3042:12;;;;:16;;:41;;;;:::i;:::-;3014:24;3031:6;3014:12;:16;;:24;;;;:::i;:::-;:69;;2989:171;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;2953:218;3202:30;3225:6;3202:18;;;;:22;;:30;;;;:::i;:::-;3181:18;;:51;;;;;;;3242:38;3261:10;3273:6;3242:5;;;;;;;;;;;:18;;;;:38;;;;;:::i;:::-;3296:37;3314:10;3326:6;3296:37;;;;;;;;;;;;;;;;;;;;;;;;;;;;2699:641;;;:::o;3902:542::-;3950:24;:22;:24;;:::i;:::-;3985:17;4005:69;4057:16;;;;4005:47;4022:17;;;:29;4040:10;4022:29;;;;;;;;;;;;;;;;;;4005:12;;;;:16;;:47;;;;:::i;:::-;:51;;:69;;;;:::i;:::-;3985:89;;4084:14;4101:45;4115:18;;;:30;4134:10;4115:30;;;;;;;;;;;;;;;;;;4101:9;:13;;:45;;;;:::i;:::-;4084:62;;4173:1;4164:6;:10;4156:55;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;4255:9;4222:18;;;:30;4241:10;4222:30;;;;;;;;;;;;;;;;:42;;;;;;;4300:35;4328:6;4300:23;;;;:27;;:35;;;;:::i;:::-;4274:23;;:61;;;;;;;4346:38;4365:10;4377:6;4346:5;;;;;;;;;;;:18;;;;:38;;;;;:::i;:::-;4400:37;4418:10;4430:6;4400:37;;;;;;;;;;;;;;;;;;;;;;;;;;;;3902:542;;;:::o;905:53::-;;;;;;;;;;;;;;;;;;;:::o;521:23::-;;;;;;;;;;;;;:::o;410:27::-;;;;;;:::o;375:29::-;;;;;;:::o;575:33::-;;;;;;:::o;4501:218::-;4546:15;:13;:15;;:::i;:::-;4571:27;:25;:27;;:::i;:::-;4626:3;4609:14;;:20;;;;;;;4660:17;;;;4654:3;:23;4639:12;;:38;;;;;;;4693:19;4708:3;4693:19;;;;;;;;;;;;;;;;;;4501:218;:::o;1279:466::-;1024:12:18;;;;;;;;;;;:31;;;;1040:15;:13;:15;;:::i;:::-;1024:31;:47;;;;1060:11;;;;;;;;;;;1059:12;1024:47;1016:106;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;1129:19;1152:12;;;;;;;;;;;1151:13;1129:35;;1174:14;1170:80;;;1213:4;1198:12;;:19;;;;;;;;;;;;;;;;;;1239:4;1225:11;;:18;;;;;;;;;;;;;;;;;;1170:80;1534:9:0;1523:8;;:20;;;;;;;;;;;;;;;;;;1573:9;1553:17;;:29;;;;;;;1600:6;1592:5;;:14;;;;;;;;;;;;;;;;;;1637:19;1616:18;;:40;;;;;;;1684:16;;1666:15;;:34;;;;;;;;:::i;:::-;;1725:13;1710:12;;:28;;;;;;;1256:1:18;1268:14;1264:55;;;1307:5;1292:12;;:20;;;;;;;;;;;;;;;;;;1264:55;1279:466:0;;;;;;;;;:::o;806:33::-;;;;;;:::o;1863:580::-;1912:26;:24;:26;;:::i;:::-;1948:25;:23;:25;;:::i;:::-;2001:1;1992:6;:10;1984:49;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;2063:28;2084:6;2063:16;;;;:20;;:28;;;;:::i;:::-;2044:16;;:47;;;;;;;2142:18;;;;2122:16;;;;:38;;2101:143;;;;;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