<?php

class RepoController
{
  private array $cfg;
  public function __construct(array $cfg){ $this->cfg=$cfg; }

  public function list(): void {
    $uid = require_auth();
    $db = db();

    // owner repos
    $st = $db->prepare("SELECT r.*, u.username as owner_username
                        FROM repositories r
                        JOIN users u ON u.id=r.owner_id
                        WHERE r.owner_id=?
                        ORDER BY r.id DESC");
    $st->execute([$uid]);
    $owned = $st->fetchAll();

    // collaborator repos
    $st = $db->prepare("SELECT r.*, u.username as owner_username, c.role as collab_role
                        FROM repo_collaborators c
                        JOIN repositories r ON r.id=c.repo_id
                        JOIN users u ON u.id=r.owner_id
                        WHERE c.user_id=?
                        ORDER BY r.id DESC");
    $st->execute([$uid]);
    $collab = $st->fetchAll();

    $title = "Your Repositories";
    require __DIR__ . '/../views/repos/list.php';
  }

  public function showCreate(): void {
    require_auth();
    $title = "Create Repo";
    require __DIR__ . '/../views/repos/create.php';
  }

  public function create(): void {
    $uid = require_auth();
    csrf_verify();

    $db = db();
    $storage = $this->cfg['storage_base'];
    $blobs = new BlobStore($storage);
    $engine = new RepoEngine($blobs);

    $name = trim($_POST['name'] ?? '');
    $vis  = $_POST['visibility'] ?? 'public';
    $desc = trim($_POST['description'] ?? '') ?: null;

    $repoId = $engine->createRepo($db, $uid, $name, $vis, $desc);
    flash_set('ok', 'Repository created.');
    redirect("/r/$repoId");
  }

  public function show(int $repoId): void {
    $db = db();
    $uid = auth_user_id(); // can be null for public repos

    if (!repo_can_read($db, $repoId, $uid)) { http_response_code(403); exit("403 Forbidden"); }
    $repo = repo_get($db, $repoId);

    $branch = safe_branch($_GET['branch'] ?? $repo['default_branch']);
    $title = $repo['owner_username'] . "/" . $repo['name'];

    $st = $db->prepare("SELECT name, head_commit_id FROM branches WHERE repo_id=? ORDER BY name ASC");
    $st->execute([$repoId]);
    $branches = $st->fetchAll();

    $st = $db->prepare("SELECT c.*, u.username as author_name
                        FROM commits c JOIN users u ON u.id=c.author_id
                        WHERE c.repo_id=? AND c.branch_name=?
                        ORDER BY c.id DESC LIMIT 25");
    $st->execute([$repoId, $branch]);
    $commits = $st->fetchAll();

    $canWrite = repo_can_write($db, $repoId, $uid);
    $isOwner = ($uid && (int)$repo['owner_id'] === (int)$uid);

    require __DIR__ . '/../views/repos/show.php';
  }
}