===== System Rules and States =====

The Regexta application implements a functional state logic that regulates the behavior of the interface and guarantees consistency between input and generated output.

State management is strictly connected to the regestum extraction process.

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==== “Editable” state ====

The “Editable” state represents the initial condition of the document.

At this stage:

  * the user may freely insert or modify the text;
  * it is possible to upload or replace a file;
  * it is possible to select or modify the document type (Document Type);
  * the output has not yet been generated.

The document remains in this state until execution of the “Extract Regestum” command.

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==== “Extracted” state ====

After the extraction process is started, the document enters the “Extracted” state.

At this stage:

  * the input area becomes read-only;
  * the text can no longer be modified;
  * the structured output is generated and displayed;
  * output operations become available (Export, Copy, Save for authenticated users).

The transition to the “Extracted” state guarantees integrity between the analyzed content and the produced regestum.

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==== State transition ====

The transition between states occurs according to the following rules:

  * from “Editable” to “Extracted” through the “Extract Regestum” command;
  * from “Extracted” to “Editable” through the “Reset” command.

The “Reset” command clears:

  * the input content;
  * the generated output;
  * the read-only state.

The system therefore returns to the initial configuration, allowing a new processing cycle.

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==== Visibility rules based on authentication ====

The application applies differentiated visibility and persistence rules according to authentication status.

Non-authenticated user:

  * cannot save regesta within the platform;
  * does not see the “Collections” page;
  * may only export the result locally.

Authenticated user (Researcher):

  * may save the generated regestum;
  * may associate it with a Collection;
  * may access the “Collections” page;
  * may consult previously archived documents.

Admin:

  * has full access to the contents and functionalities of the application.