Add configurable OAuth provider branding via $authProvider

[Copilot]

Adds support for customizing OAuth login button display based on identity provider. When set to 'Microsoft', shows Microsoft logo and localized text. Otherwise displays generic text with provider name.

Changes

Configuration (src/config.sample.php):

// OAuth Provider Name
$authProvider = 'Microsoft';  // or 'Google', 'Authentik', etc.

Login Page (login/index.php):

• Conditional rendering: Microsoft logo SVG + "Iniciar Sessão com Microsoft" when $authProvider === 'Microsoft'
• Generic text "Iniciar Sessão com Fornecedor de Identidade {provider}" for other providers
• XSS protection via htmlspecialchars() on provider name

Visual Changes

Microsoft Provider:

Non-Microsoft Provider (e.g., Google):

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Original prompt

OAuth2 allows multiple types of providers. Add a new variable over at config.php, $authProvider. If set to 'Microsoft', you will load the Microsoft logo onto the sign on button, and it will say "Iniciar Sessão com Microsoft", as it already says. If it's not 'Microsoft', the Microsoft logo won't be loaded, and it will say "Iniciar Sessão com Fornecedor de Identidade $authProvider".

Do not document any of your changes to a text file or a .MD file, do so via the PR you are going to create, or via the chat of the agent session.

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[marpisco]

LGTM.

[Copilot]

Pull request overview

This PR adds configurable OAuth provider branding to the ClassLink login screen. It introduces a new configuration variable $authProvider that controls the visual appearance of the login button. When set to 'Microsoft', the button displays the Microsoft logo with localized Portuguese text. For other providers, it shows generic text with the provider name.

Changes:

• Added $authProvider configuration variable in config.sample.php
• Implemented conditional rendering of provider-specific branding in the login page
• Applied XSS protection to provider names using htmlspecialchars()

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.

File	Description
src/config.sample.php	Added $authProvider configuration variable and updated comments to Portuguese
login/index.php	Implemented conditional rendering for Microsoft logo/text vs. generic provider text with proper XSS protection