🎮 Add platform configuration for new gaming systems

code/websites/pokedex.online/src/config/platforms.js

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+/**
+ * Platform Registry
+ * 
+ * Centralized configuration for OAuth providers and authentication methods
+ * Supports: Challonge (OAuth, API Key, Client Credentials), Discord (OAuth)
+ * 
+ * Add new platforms by extending PLATFORMS object with name, label, icon, and auth methods
+ */
+
+export const PLATFORMS = {
+  challonge: {
+    name: 'challonge',
+    label: 'Challonge',
+    icon: '🏆',
+    description: 'Tournament management and API access',
+    helpUrl: 'https://challonge.com/settings/developer',
+    auth: {
+      apiKey: {
+        enabled: true,
+        label: 'API Key',
+        description: 'Direct API key authentication for v1 and v2.1',
+        storageKey: 'challonge_api_key'
+      },
+      oauth: {
+        enabled: true,
+        label: 'OAuth 2.0',
+        description: 'User token authentication for v2.1 API',
+        endpoint: 'https://api.challonge.com/oauth/authorize',
+        tokenEndpoint: '/api/oauth/token',
+        refreshEndpoint: '/api/oauth/refresh',
+        scopes: ['tournaments:read', 'tournaments:write'],
+        storageKey: 'challonge_oauth_tokens'
+      },
+      clientCredentials: {
+        enabled: true,
+        label: 'Client Credentials',
+        description: 'For APPLICATION scope access',
+        tokenEndpoint: 'https://api.challonge.com/oauth/token',
+        storageKey: 'challonge_client_credentials'
+      }
+    }
+  },
+  discord: {
+    name: 'discord',
+    label: 'Discord',
+    icon: '🎮',
+    description: 'Personal identity verification and access control',
+    helpUrl: 'https://discord.com/developers/applications',
+    auth: {
+      oauth: {
+        enabled: true,
+        label: 'OAuth 2.0',
+        description: 'Verify your Discord identity',
+        endpoint: 'https://discord.com/api/oauth2/authorize',
+        tokenEndpoint: '/api/oauth/token',
+        refreshEndpoint: '/api/oauth/refresh',
+        scopes: ['identify'],
+        storageKey: 'discord_oauth_tokens',
+        userEndpoint: 'https://discord.com/api/users/@me'
+      }
+    }
+  }
+};
+
+/**
+ * Get platform configuration by name
+ * @param {string} name - Platform name (e.g., 'challonge', 'discord')
+ * @returns {Object} Platform configuration or throws error if not found
+ */
+export function getPlatform(name) {
+  const platform = PLATFORMS[name];
+  if (!platform) {
+    throw new Error(`Platform not found: ${name}`);
+  }
+  return platform;
+}
+
+/**
+ * Get all platforms
+ * @returns {Object[]} Array of all platform configurations
+ */
+export function getAllPlatforms() {
+  return Object.values(PLATFORMS);
+}
+
+/**
+ * Check if a platform has a specific auth method
+ * @param {string} platformName - Platform name
+ * @param {string} methodName - Auth method name (e.g., 'oauth', 'apiKey')
+ * @returns {boolean} True if method is enabled
+ */
+export function hasAuthMethod(platformName, methodName) {
+  try {
+    const platform = getPlatform(platformName);
+    return platform.auth[methodName]?.enabled === true;
+  } catch {
+    return false;
+  }
+}
+
+/**
+ * Get auth method configuration
+ * @param {string} platformName - Platform name
+ * @param {string} methodName - Auth method name
+ * @returns {Object} Auth method configuration
+ */
+export function getAuthMethod(platformName, methodName) {
+  const platform = getPlatform(platformName);
+  const method = platform.auth[methodName];
+  if (!method || !method.enabled) {
+    throw new Error(`Auth method not found: ${platformName}.${methodName}`);
+  }
+  return method;
+}