'Invalid input. session_id, persona, and history are required.']); exit; } $sessionId = $data['session_id']; $persona = $data['persona']; $history = $data['history']; // --- System Prompt & API Call (remains the same) --- $system_prompt = "You are a market research analyst. Your task is to analyze a conversation between an entrepreneur and a potential customer persona. The persona's details and the conversation are provided below.\n\n" . "**Persona Profile:**\n" . "- Name: {$persona['name']}\n" . "- Age: {$persona['age']}\n" . "- Occupation: {$persona['occupation']}\n" . "- Traits: {$persona['traits']}\n" . "- Concerns: {$persona['concerns']}\n" . "- Style: {$persona['style']}\n\n" . "**Your Analysis Should Include:**\n" . "1. **Key Takeaways:** A bulleted list of the most important points from the conversation.\n" . "2. **Persona's Sentiment:** A brief assessment (Positive, Negative, Neutral, Mixed) of the persona's overall feeling about the business idea, with a brief justification.\n" . "3. **Actionable Insights:** A bulleted list of concrete suggestions for the entrepreneur to improve their idea based on the persona's feedback.\n\n" . "Please format your response in simple HTML, using

for titles and
and
for lists. Do not include , , or tags."; $conversation_text = ""; foreach ($history as $msg) { $sender = $msg['sender'] === 'user' ? 'Entrepreneur' : $persona['name']; $conversation_text .= "{$sender}: {$msg['message']}\n"; } $user_content = "Please analyze the following conversation:\n\n{$conversation_text}"; $messages = [[ 'role' => 'user', 'content' => $user_content ]]; $apiKey = defined('ANTHROPIC_API_KEY') ? ANTHROPIC_API_KEY : ''; if (empty($apiKey) || $apiKey === 'YOUR_ANTHROPIC_API_KEY') { http_response_code(500); echo json_encode(['error' => 'Anthropic API key is not configured.']); exit; } $payload = [ 'model' => 'claude-3-sonnet-20240229', 'system' => $system_prompt, 'messages' => $messages, 'max_tokens' => 1024, 'temperature' => 0.5, ]; $ch = curl_init('https://api.anthropic.com/v1/messages'); // ... (cURL options remain the same) curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); curl_setopt($ch, CURLOPT_POST, true); curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($payload)); curl_setopt($ch, CURLOPT_HTTPHEADER, [ 'Content-Type: application/json', 'x-api-key: ' . $apiKey, 'anthropic-version: 2023-06-01' ]); $response = curl_exec($ch); $httpcode = curl_getinfo($ch, CURLINFO_HTTP_CODE); $curl_error = curl_error($ch); curl_close($ch); if ($curl_error || $httpcode >= 400) { http_response_code($httpcode > 0 ? $httpcode : 500); $error_details = json_decode($response, true); echo json_encode(['error' => 'Anthropic API Error', 'details' => $error_details, 'curl_error' => $curl_error]); exit; } $result = json_decode($response, true); $analysisContent = $result['content'][0]['text'] ?? null; if ($analysisContent) { // --- Save analysis to DB --- try { $pdo = db(); // Use INSERT ... ON DUPLICATE KEY UPDATE to avoid creating multiple analyses for one session. // Note: This requires a UNIQUE index on session_id in the analyses table. // For simplicity here, we'll just insert. A more robust app would handle this better. $stmt = $pdo->prepare("INSERT INTO analyses (session_id, content) VALUES (?, ?)"); $stmt->execute([$sessionId, $analysisContent]); } catch (Exception $e) { error_log('Database error while saving analysis: ' . $e->getMessage()); } echo json_encode(['analysis' => $analysisContent]); } else { http_response_code(500); echo json_encode(['error' => 'Unexpected API response structure for analysis.', 'details' => $result]); }