<?php

/**
 * Script de migration unique pour le système de notifications dérivées.
 *
 * Ce script copie les `readby[]` des anciennes notifications vers les sources de données.
 * À exécuter une seule fois après le déploiement, puis à supprimer.
 *
 * Usage: POST /migrate-notifications.json
 */

return [
  'pattern' => 'migrate-notifications.json',
  'method' => 'POST',
  'action' => function () {
    $user = kirby()->user();

    // Vérifier que l'utilisateur est admin
    if (!$user || $user->role()->id() !== 'admin') {
      return [
        'status' => 'error',
        'message' => 'Cette action nécessite les droits administrateur.'
      ];
    }

    $migrated = [
      'comments' => 0,
      'replies' => 0,
      'project-requests' => 0,
      'appointment-requests' => 0,
      'content' => 0,
      'errors' => []
    ];

    $projects = page('projects')->children();

    foreach ($projects as $project) {
      // Récupérer les anciennes notifications
      $notifications = $project->notifications()->yaml() ?? [];

      if (empty($notifications)) {
        continue;
      }

      foreach ($notifications as $notification) {
        try {
          $type = $notification['type'] ?? 'comment';
          $id = $notification['id'] ?? null;
          $readby = $notification['readby'] ?? [];

          if (empty($id) || empty($readby)) {
            continue;
          }

          switch ($type) {
            case 'comment':
            case 'comment-reply':
              $fileUuid = $notification['location']['file']['uuid'] ?? null;
              if (!$fileUuid) continue 2;

              $file = kirby()->file($fileUuid);
              if (!$file) continue 2;

              $comments = Yaml::decode($file->comments()->value()) ?? [];
              $updated = false;

              foreach ($comments as &$comment) {
                // Vérifier si c'est le commentaire principal
                if ($comment['id'] === $id) {
                  $existingReadby = $comment['readby'] ?? [];
                  $comment['readby'] = array_values(array_unique(array_merge($existingReadby, $readby)));
                  $updated = true;
                  $migrated['comments']++;
                  break;
                }

                // Vérifier dans les réponses
                foreach ($comment['replies'] ?? [] as &$reply) {
                  if ($reply['id'] === $id) {
                    $existingReadby = $reply['readby'] ?? [];
                    $reply['readby'] = array_values(array_unique(array_merge($existingReadby, $readby)));
                    $updated = true;
                    $migrated['replies']++;
                    break 2;
                  }
                }
              }

              if ($updated) {
                $file->update(['comments' => $comments]);
              }
              break;

            case 'project-request':
              $existingReadby = $project->requestReadby()->yaml() ?? [];
              $newReadby = array_values(array_unique(array_merge($existingReadby, $readby)));

              $updateData = ['requestReadby' => $newReadby];

              // Migrer aussi les métadonnées si elles n'existent pas encore
              if ($project->requestAuthor()->isEmpty() && isset($notification['author'])) {
                $updateData['requestAuthor'] = $notification['author']['uuid'] ?? '';
                $updateData['requestAuthorName'] = $notification['author']['name'] ?? '';
                $updateData['requestAuthorEmail'] = $notification['author']['email'] ?? '';
                $updateData['requestDate'] = $notification['date'] ?? '';
              }

              $project->update($updateData);
              $migrated['project-requests']++;
              break;

            case 'appointment-request':
              $existingReadby = $project->optimizationReadby()->yaml() ?? [];
              $newReadby = array_values(array_unique(array_merge($existingReadby, $readby)));

              $updateData = ['optimizationReadby' => $newReadby];

              // Migrer aussi les métadonnées si elles n'existent pas encore
              if ($project->optimizationAuthor()->isEmpty() && isset($notification['author'])) {
                $updateData['optimizationAuthor'] = $notification['author']['uuid'] ?? '';
                $updateData['optimizationAuthorName'] = $notification['author']['name'] ?? '';
                $updateData['optimizationAuthorEmail'] = $notification['author']['email'] ?? '';
                $updateData['optimizationDate'] = $notification['date'] ?? '';
              }

              $project->update($updateData);
              $migrated['appointment-requests']++;
              break;

            case 'content':
              $briefUri = $notification['location']['page']['uri'] ?? null;
              if (!$briefUri) continue 2;

              $brief = page($briefUri);
              if (!$brief) continue 2;

              $existingReadby = $brief->validationReadby()->yaml() ?? [];
              $newReadby = array_values(array_unique(array_merge($existingReadby, $readby)));

              $updateData = ['validationReadby' => $newReadby];

              // Migrer aussi les métadonnées si elles n'existent pas encore
              if ($brief->validatedBy()->isEmpty() && isset($notification['author'])) {
                $updateData['validatedBy'] = $notification['author']['uuid'] ?? '';
                $updateData['validatedByName'] = $notification['author']['name'] ?? '';
                $updateData['validatedByEmail'] = $notification['author']['email'] ?? '';
                $updateData['validatedAt'] = $notification['date'] ?? '';
              }

              $brief->update($updateData);
              $migrated['content']++;
              break;
          }
        } catch (\Throwable $th) {
          $migrated['errors'][] = [
            'project' => $project->title()->value(),
            'notification_id' => $id ?? 'unknown',
            'type' => $type ?? 'unknown',
            'error' => $th->getMessage()
          ];
        }
      }
    }

    $total = $migrated['comments'] + $migrated['replies'] +
             $migrated['project-requests'] + $migrated['appointment-requests'] +
             $migrated['content'];

    return [
      'status' => 'success',
      'message' => "Migration terminée. $total notifications migrées.",
      'details' => $migrated
    ];
  }
];