<?php
// Database configuration
define('DB_HOST', 'localhost');
define('DB_USER', 'sridharmani');
define('DB_PASS', 'P@ssw0rd2016');
define('DB_NAME', 'syndia');

// Application configuration
define('APP_NAME', 'Syndia');
define('APP_TAGLINE', 'India\'s first Nationally Representative Synthetic Panel');
define('BASE_COLOR', '#f58220');
define('SYNTHETIC_COLOR', '#00BCD4');

// GPT Configuration - OPTIMIZED FOR YOUR 500 RPM LIMIT
define('OPENAI_API_KEY', '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');

// *** OPTIMIZED MODEL SELECTION ***
define('GPT_MODEL', 'gpt-4o-mini');           // Best value: cheap + high rate limits
define('GPT_FALLBACK_MODEL', 'gpt-3.5-turbo'); // Fallback if needed
define('GPT_MAX_TOKENS', 150);                // Reduced for cost efficiency
define('GPT_TEMPERATURE', 0.1);               // Low for consistency

// OPTIMIZED RATE LIMITING (Based on your 500 RPM limit)
define('GPT_REQUESTS_PER_MINUTE', 60);        // Conservative 60 RPM (well under 500 limit)
define('GPT_MAX_RETRIES', 3);
define('GPT_RETRY_DELAY', 15);                // Shorter delays
define('GPT_COOLDOWN_PERIOD', 15);

// OptimAIze-specific settings (faster processing)
define('OPTIMAIZE_REQUESTS_PER_MINUTE', 120); // 120 RPM for OptimAIze (still under 500)
define('OPTIMAIZE_BATCH_SIZE', 20);           // Larger batches
define('OPTIMAIZE_PARALLEL_REQUESTS', 3);     // Some parallelism
define('OPTIMAIZE_COOLDOWN', 5);              // Short cooldown

// AGGRESSIVE CACHING (reduce API calls)
define('ENABLE_COMBINATION_CACHE', true);
define('CACHE_EXPIRY_HOURS', 720);            // Cache for 30 days
define('MAX_CACHE_ENTRIES', 100000);          // Large cache

// Cost monitoring (conservative limits for safety)
define('ENABLE_COST_TRACKING', true);
define('MAX_DAILY_COST', 25.00);              // $25/day limit (conservative)
define('COST_WARNING_THRESHOLD', 15.00);      // Warn at $15/day

// Rate limit recovery settings
define('ENABLE_RATE_LIMIT_RECOVERY', true);
define('RECOVERY_WAIT_TIME', 30);             // Quick recovery
define('MAX_RECOVERY_ATTEMPTS', 5);

// GPT Endpoints
define('GPT_API_ENDPOINT', 'https://api.openai.com/v1/chat/completions');
define('GPT_API_VERSION', '2024-02-16');

// Optimized mode flags
define('COST_EFFECTIVE_MODE', true);
define('OPTIMIZED_FOR_TIER1', true);
define('OPTIMIZATION_MESSAGE', 'Optimized for OpenAI Tier 1 limits (500 RPM) using gpt-4o-mini');

// Check if we're in CLI mode
$is_cli = php_sapi_name() === 'cli' || defined('CLI_MODE');

// Site URL configuration - Handle CLI mode differently
if ($is_cli) {
    define('SITE_URL', 'http://localhost');  // Dummy value for CLI mode
} else {
    // Original site URL code for web requests
    $protocol = isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] === 'on' ? 'https://' : 'http://';
    $host = $_SERVER['HTTP_HOST'];
    define('SITE_URL', $protocol . $host);
    
    // Session configuration - Only for web requests
    ini_set('session.cookie_lifetime', 86400);
    ini_set('session.gc_maxlifetime', 86400);
    if (session_status() === PHP_SESSION_NONE) {
        session_start();
    }
}

// Error reporting - set to 0 in production
error_reporting(E_ALL);
ini_set('display_errors', 1);

// Timezone
date_default_timezone_set('Asia/Kolkata');

// GPT Error Messages
define('GPT_ERROR_MESSAGES', [
    'rate_limit' => 'API rate limit exceeded. Please wait and try again.',
    'quota_exceeded' => 'OpenAI quota exceeded. Please check your billing.',
    'invalid_request' => 'Invalid request to GPT API.',
    'auth_error' => 'Authentication failed. Check API key.',
    'network_error' => 'Network error. Check internet connection.',
    'server_error' => 'OpenAI server error. Try again later.',
    'unknown_error' => 'Unknown error occurred.'
]);

// Cost tracking files
define('COST_LOG_FILE', __DIR__ . '/../logs/cost_tracking.log');
define('DAILY_COST_FILE', __DIR__ . '/../logs/daily_cost.json');

// Debug logging
define('DEBUG_RATE_LIMITS', true);
define('RATE_LIMIT_LOG_FILE', __DIR__ . '/../logs/rate_limit_debug.log');

// Ensure logs directory exists
if (!$is_cli) {
    $log_dir = __DIR__ . '/../logs';
    if (!is_dir($log_dir)) {
        @mkdir($log_dir, 0755, true);
    }
    
    // Log optimization mode activation
    error_log("Syndia: Optimized for OpenAI Tier 1 - Using gpt-4o-mini with 120 RPM");
}

// *** MISSING CONSTANTS ADDED ***
// Cost estimation constants (gpt-4o-mini pricing)
define('GPT4OMINI_COST_PER_1K_INPUT_TOKENS', 0.000150);   // $0.00015 per 1K input tokens
define('GPT4OMINI_COST_PER_1K_OUTPUT_TOKENS', 0.000600);  // $0.0006 per 1K output tokens

// Legacy constants for backward compatibility  
define('GPT35_COST_PER_1K_TOKENS', 0.002);                // $0.002 per 1K tokens (GPT-3.5)
define('GPT4_COST_PER_1K_TOKENS', 0.030);                 // $0.03 per 1K tokens (GPT-4)

// Token estimation constants
define('AVERAGE_INPUT_TOKENS_PER_REQUEST', 150);          // Conservative estimate
define('AVERAGE_OUTPUT_TOKENS_PER_REQUEST', 50);          // Conservative estimate
define('AVERAGE_TOKENS_PER_REQUEST', 200);                // Total average

// Performance tracking
define('ENABLE_PERFORMANCE_TRACKING', true);
define('PERFORMANCE_LOG_FILE', __DIR__ . '/../logs/performance.log');
?>