CommodityD_C

Author: Tinotenda Joe

This contract represents a dispatch and collection model for commodities

State Variables

Storage for contract owner's address

address Owner;

Addresses for medAddr, sender, transporter, receiver

address medAddr;

address sender;

address transporter;

address receiver;

Store the status of package

packageStatus status;

Constructor that initializes contract with initial parameters

constructor(address _address, address Sender, address Transporter, address Receiver);

Parameters

Called when the associated transporter initiates this function

function pickDC(address _address, address transporterAddr) public;

Parameters

Name	Type	Description
`_address`	`address`	The commodity address
`transporterAddr`	`address`	The transporter's address

Called when the associated receiver initiates this function

function receiveDC(address _address, address Receiver) public;

Parameters

Name	Type	Description
`_address`	`address`	The commodity address
`Receiver`	`address`	The receiver's address

Returns the current status of the package

function get_addressStatus() public view returns (uint256);

Returns

Name	Type	Description
`<none>`	`uint256`	status The current status of the package

error UnAuthorised_Receiver();

error Transporter_is_not_Authorised();

Enumeration of different package statuses

enum packageStatus {
    atcreator,
    picked,
    delivered
}