<?php
/**
 * One-time import: reads the temp-asset JSON files and populates the DB.
 * Run from CLI:  php import_questionnaires.php
 * Or via browser (requires admin token): import_questionnaires.php
 */
require_once __DIR__ . '/common.php';
require_once __DIR__ . '/db_init.php';

$isCli = (php_sapi_name() === 'cli');

if (!$isCli) {
    header('Content-Type: application/json; charset=UTF-8');
    $tokenRec = require_valid_token();
    require_role(['admin'], $tokenRec);
}

function out(string $msg, bool $isCli): void {
    if ($isCli) { echo $msg . "\n"; }
}

$assetsDir = __DIR__ . '/website/temp-assets';
$orderFile = $assetsDir . '/questionnaire_order.json';

$orderData = json_decode(file_get_contents($orderFile), true);
if (!$orderData) {
    $err = "Could not read questionnaire_order.json";
    if ($isCli) { die($err . "\n"); }
    http_response_code(500);
    echo json_encode(["error" => $err]);
    exit;
}

[$pdo, $tmpDb, $lockFp] = qdb_open(true);

try {
    $pdo->beginTransaction();

    foreach ($orderData as $orderIdx => $entry) {
        $filename = $entry['file'];
        $showPoints = (int)($entry['showPoints'] ?? 0);
        $condition = json_encode($entry['condition'] ?? new stdClass());

        $jsonPath = $assetsDir . '/' . $filename;
        $qData = json_decode(file_get_contents($jsonPath), true);
        if (!$qData) {
            throw new Exception("Could not parse $filename");
        }

        $questionnaireID = $qData['meta']['id'];
        $name = str_replace('_', ' ', preg_replace('/^questionnaire_\d+_/', '', $questionnaireID));
        $name = ucwords($name);

        out("Importing: $questionnaireID ($name)", $isCli);

        $pdo->prepare("INSERT OR REPLACE INTO questionnaire
            (questionnaireID, name, version, state, orderIndex, showPoints, conditionJson)
            VALUES (:id, :n, :v, :s, :o, :sp, :cj)")
            ->execute([
                ':id' => $questionnaireID,
                ':n'  => $name,
                ':v'  => '1.0',
                ':s'  => 'active',
                ':o'  => $orderIdx,
                ':sp' => $showPoints,
                ':cj' => $condition,
            ]);

        $questions = $qData['questions'] ?? [];
        foreach ($questions as $qIdx => $q) {
            $qLocalId = $q['id'];
            $layout   = $q['layout'];
            $qKey     = $q['question'] ?? '';

            $questionID = $questionnaireID . '__' . $qLocalId;

            $config = [];

            if (isset($q['textKey']))  $config['textKey']  = $q['textKey'];
            if (isset($q['textKey1'])) $config['textKey1'] = $q['textKey1'];
            if (isset($q['textKey2'])) $config['textKey2'] = $q['textKey2'];
            if (isset($q['hint']))     $config['hint']     = $q['hint'];
            if (isset($q['hint1']))    $config['hint1']    = $q['hint1'];
            if (isset($q['hint2']))    $config['hint2']    = $q['hint2'];
            if (isset($q['symptoms'])) $config['symptoms'] = $q['symptoms'];
            if (isset($q['range']))    $config['range']    = $q['range'];
            if (isset($q['constraints'])) $config['constraints'] = $q['constraints'];
            if (isset($q['minSelection'])) $config['minSelection'] = $q['minSelection'];
            if (isset($q['maxLength']))    $config['maxLength']    = (int)$q['maxLength'];
            if (!empty($q['multiline']))   $config['multiline']    = true;
            if (isset($q['otherNextQuestionId'])) $config['otherNextQuestionId'] = $q['otherNextQuestionId'];
            if (isset($q['otherOptionKey']))      $config['otherOptionKey']      = $q['otherOptionKey'];
            if (isset($q['config']) && is_array($q['config'])) {
                foreach (['otherNextQuestionId', 'otherOptionKey', 'hint', 'maxLength', 'multiline', 'textKey'] as $ck) {
                    if (isset($q['config'][$ck])) {
                        $config[$ck] = $q['config'][$ck];
                    }
                }
            }

            if ($layout === 'string_spinner' && isset($q['options']) && is_array($q['options'])
                && isset($q['options'][0]) && is_string($q['options'][0])) {
                $config['options'] = $q['options'];
            }

            if ($layout === 'value_spinner' && isset($q['options']) && is_array($q['options'])) {
                $valueOptions = [];
                foreach ($q['options'] as $vo) {
                    if (is_array($vo) && isset($vo['value'])) {
                        $valueOptions[] = $vo;
                    }
                }
                if ($valueOptions) {
                    $config['valueOptions'] = $valueOptions;
                }
            }

            $configJson = !empty($config) ? json_encode($config) : '{}';

            $pdo->prepare("INSERT OR REPLACE INTO question
                (questionID, questionnaireID, defaultText, type, orderIndex, isRequired, configJson)
                VALUES (:id, :qnid, :dt, :ty, :oi, :ir, :cj)")
                ->execute([
                    ':id'   => $questionID,
                    ':qnid' => $questionnaireID,
                    ':dt'   => $qKey,
                    ':ty'   => $layout,
                    ':oi'   => $qIdx,
                    ':ir'   => 0,
                    ':cj'   => $configJson,
                ]);

            if (isset($q['options']) && is_array($q['options'])) {
                $hasObjects = isset($q['options'][0]) && is_array($q['options'][0]);
                if ($hasObjects) {
                    $pointsMap = $q['pointsMap'] ?? [];
                    foreach ($q['options'] as $optIdx => $opt) {
                        $optKey = $opt['key'] ?? '';
                        if (!$optKey) continue;

                        $nextQId = '';
                        if (isset($opt['nextQuestionId'])) {
                            $nextQId = $opt['nextQuestionId'];
                        }
                        $pts = (int)($pointsMap[$optKey] ?? 0);
                        $answerOptionID = $questionID . '__opt_' . $optIdx;

                        $pdo->prepare("INSERT OR REPLACE INTO answer_option
                            (answerOptionID, questionID, defaultText, points, orderIndex, nextQuestionId)
                            VALUES (:id, :qid, :dt, :p, :oi, :nq)")
                            ->execute([
                                ':id'  => $answerOptionID,
                                ':qid' => $questionID,
                                ':dt'  => $optKey,
                                ':p'   => $pts,
                                ':oi'  => $optIdx,
                                ':nq'  => $nextQId,
                            ]);
                    }
                }
            }
        }

        out("  -> " . count($questions) . " questions imported", $isCli);
    }

    $pdo->commit();
    qdb_save($tmpDb, $lockFp);

    if ($isCli) {
        echo "\nImport complete.\n";
    } else {
        echo json_encode(["success" => true, "message" => "Import complete"]);
    }

} catch (Throwable $e) {
    if ($pdo->inTransaction()) $pdo->rollBack();
    qdb_discard($tmpDb, $lockFp);
    if ($isCli) {
        die("ERROR: " . $e->getMessage() . "\n");
    }
    http_response_code(500);
    error_log($e->getMessage());
    echo json_encode(["error" => "Server error"]);
}