= Use-Case Model =

== Actors / Roles ==

 * '''Admin''' – The agency operator who manages clients, creates projects and tasks, assigns work to team members, tracks domains, and issues invoices.
 * '''Worker''' – A team member who executes assigned tasks, logs worked hours through timesheets, uploads deliverable files, and comments on tasks.
 * '''Client''' – The customer the work is done for, who views the status of their projects and tasks, reviews delivered files, and receives invoices.

== Use-Cases ==

'''Admin'''
 * UC0001 – Create and assign a task to workers – Admin creates a task under a project and assigns one or more workers to it.
 * UC0003 – Issue an invoice with line items – Admin creates an invoice for a client with itemized line items and computed totals.
 * UC0004 – Track domain renewals – Admin reviews client domains approaching expiry to plan renewals.
 * UC0005 – Manage clients and projects – Admin onboards clients and creates the projects delivered to them.

'''Worker'''
 * UC0006 – Log timesheet hours – Worker records hours worked against a timesheet project.
 * UC0007 – Upload a deliverable file – Worker uploads a file to a task for client review.
 * UC0008 – Comment on a task – Worker adds an internal or client-visible comment to a task.

'''Client'''
 * UC0002 – View project and task status – Client views the current status of their projects and the tasks within them.
 * UC0009 – Review a delivered file – Client views files marked visible and approves or requests revisions.
 * UC0010 – View invoices – Client views issued invoices and their payment status.

== Detailed Use-Cases ==

The following use-cases are documented in detail with tested SQL commands:

 * [wiki:UseCase0001 UseCase0001] – Admin creates and assigns a task to workers
 * [wiki:UseCase0002 UseCase0002] – Client views project and task status
 * [wiki:UseCase0003 UseCase0003] – Admin issues an invoice with line items