[Admin] Update and Manage Site Owner Contact Information

[mehalyna]

As an Admin,
I want to update the site owner's contact information through the admin panel,
So that the updated details are stored in a dedicated database entity with a timestamp and are automatically reflected in the website footer.

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Acceptance Criteria:

Contact Management Interface:

• A section in the admin panel titled "Керування контактами" (Manage Contacts).
• Editable fields include:
  • Назва компанії/установи (Company/Institution Name).
  • Адреса (Address).
  • Електронна пошта (Email).
  • Телефон (Phone Number).

Validation Rules:

• Email field:
  • Must accept only valid email formats (e.g., example@domain.com).
• Phone Number field:
  • Accepts international formats.
  • Must have a minimum of 9 digits.
• Address field:
  • Accepts alphanumeric characters and special symbols (e.g., commas, periods).
• Company/Institution Name:
  • Allows up to 100 characters, supporting Ukrainian letters and common symbols.

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Database Entity:

• A new database entity is created to store contact information:
  • Table Name: сontact_information
  • Fields:
    • id: Auto-increment primary key.
    • company_name (string): Name of the company/institution.
    • address (string): Physical address.
    • email (string): Contact email.
    • phone (string): Contact phone number.
    • updated_at (timestamp): Date and time of the last update.
    • admin_user (string): Username or ID of the admin who made the change.

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Dynamic Footer Updates:

• The website footer retrieves the latest contact information from the database dynamically.
• Changes are reflected immediately without requiring manual cache clearing or page reloads.
• If the database is inaccessible, a default set of contact details (stored as a backup) is displayed.

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Real-Time Feedback:

• After saving changes:
  • Success message: "Контактна інформація успішно оновлена!" (Contact information successfully updated!).
• Error scenarios:
  • If saving fails (e.g., database connection issue):
    • Error message: "Не вдалося зберегти зміни. Перевірте з’єднання з базою даних." (Failed to save changes. Please check the database connection.).

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Fallback Mechanism:

• If the contact_information database entity is unavailable or empty:
  • The website footer uses the last known backup stored locally.

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Technical Notes:

1. Entity Location:
   • Ensure the contact_information entity is part of a secure schema with write permissions only for authorized admin users.
2. Backup Strategy:
   • Automatically back up the contact_information table before every update to prevent data loss.

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Mockup

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Mockup link https://www.figma.com/design/MFmFKJ2Qz8Sg78Jl5AuLh8/Forum-(Copy)?node-id=7561-28522&node-type=frame&t=DTkn3QVeF1kZ9qXS-0

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Epic link #798