Created using remix-ide: Realtime Ethereum Contract Compiler and Runtime. Load this file by pasting this gists URL or ID at https://remix.ethereum.org/#version=soljson-v0.6.12+commit.27d51765.js&optimize=false&runs=200&gist=

README.txt

REMIX EXAMPLE PROJECT

Remix example project is present when Remix loads very first time or there are no files existing in the File Explorer. 
It contains 3 directories:

1. 'contracts': Holds three contracts with different complexity level, denoted with number prefix in file name.
2. 'scripts': Holds two scripts to deploy a contract. It is explained below.
3. 'tests': Contains one test file for 'Ballot' contract with unit tests in Solidity.

SCRIPTS

The 'scripts' folder contains example async/await scripts for deploying the 'Storage' contract.
For the deployment of any other contract, 'contractName' and 'constructorArgs' should be updated (along with other code if required). 
Scripts have full access to the web3.js and ethers.js libraries.

To run a script, right click on file name in the file explorer and click 'Run'. Remember, Solidity file must already be compiled.

Output from script will appear in remix terminal.

first_smart_contract.sol

pragma solidity ^0.6.6;

contract BankContract {
    
    struct client_account{
        int client_id;
        address client_address;
        uint client_balance_in_ether;
    }
    
    client_account[] clients;
    
    int clientCounter;
    address payable manager;
    mapping(address => uint) public interestDate;
    
    modifier onlyManager() {
        require(msg.sender == manager, "Only manager can call this!");
        _;
    }
    
    modifier onlyClients() {
        bool isclient = false;
        for(uint i=0;i<clients.length;i++){
            if(clients[i].client_address == msg.sender){
                isclient = true;
                break;
            }
        }
        require(isclient, "Only clients can call this!");
        _;
    }
    
    constructor() public{
        clientCounter = 0;
    }
    
    receive() external payable { }
    
    function setManager(address managerAddress) public returns(string memory){
        manager = payable(managerAddress);
        return "";
    }
   
    function joinAsClient() public payable returns(string memory){
        interestDate[msg.sender] = now;
        clients.push(client_account(clientCounter++, msg.sender, address(msg.sender).balance));
        return "";
    }
    
    function deposit() public payable onlyClients{
        payable(address(this)).transfer(msg.value);
    }
    
    function withdraw(uint amount) public payable onlyClients{
        msg.sender.transfer(amount * 1 ether);
    }
    
    function sendInterest() public payable onlyManager{
        for(uint i=0;i<clients.length;i++){
            address initialAddress = clients[i].client_address;
            uint lastInterestDate = interestDate[initialAddress];
            if(now < lastInterestDate + 10 seconds){
                revert("It's just been less than 10 seconds!");
            }
            payable(initialAddress).transfer(1 ether);
            interestDate[initialAddress] = now;
        }
    }
    
    function getContractBalance() public view returns(uint){
        return address(this).balance;
    }
}