<?php
// WEVIA Prompt API — retourne le system prompt compact
// Usage: GET /api/wevia-prompt.php → system prompt
// Usage: GET /api/wevia-prompt.php?format=json → JSON
header('Content-Type: text/plain; charset=utf-8');
header('Cache-Control: public, max-age=300'); // cache 5min

$VAULT = '/opt/obsidian-vault';
$prompt_file = $VAULT . '/doctrines/000-system-prompt.md';
$digest_file = $VAULT . '/doctrines/000-DIGEST-COMPACT.md';

// Lire le prompt principal
$prompt = file_exists($prompt_file) ? file_get_contents($prompt_file) : '';

// Ajouter le digest compact si format=full
if (isset($_GET['format']) && $_GET['format'] === 'full') {
    $digest = file_exists($digest_file) ? file_get_contents($digest_file) : '';
    $prompt .= "\n\n" . $digest;
}

if (isset($_GET['format']) && $_GET['format'] === 'json') {
    header('Content-Type: application/json');
    echo json_encode([
        'prompt' => $prompt,
        'tokens' => intval(strlen($prompt) / 4),
        'file' => 'doctrines/000-system-prompt.md',
        'editable' => '/vault-manager.html → doctrines → 000-system-prompt'
    ]);
} else {
    echo $prompt;
}