<?php

declare(strict_types=1);

namespace App\Controllers;

use App\Core\Auth;
use App\Core\DB;
use App\Core\View;

class AdminBoardController
{
    private function requireAdmin(): void
    {
        if (!Auth::check()) {
            header('Location: /login');
            exit;
        }

        $user = Auth::user();

        if ((int)($user['is_admin'] ?? 0) !== 1) {
            http_response_code(403);
            echo 'Доступ запрещен';
            exit;
        }
    }

    public function index(): void
    {
        $this->requireAdmin();

        $pdo = DB::connection();

        $stmt = $pdo->query("
            SELECT id, name, code, description, is_active, show_on_home, created_at
            FROM boards
            ORDER BY id DESC
        ");
        $boards = $stmt->fetchAll();

        View::render('admin/boards/index', [
            'boards' => $boards,
            'user' => Auth::user(),
        ]);
    }

    public function create(): void
    {
        $this->requireAdmin();

        View::render('admin/boards/create', [
            'user' => Auth::user(),
        ]);
    }

    public function store(): void
    {
        $this->requireAdmin();

        $name = trim($_POST['name'] ?? '');
        $code = trim($_POST['code'] ?? '');
        $description = trim($_POST['description'] ?? '');
        $isActive = isset($_POST['is_active']) ? 1 : 0;

        if ($name === '' || $code === '') {
            $_SESSION['error'] = 'Заполните название и код доски';
            header('Location: /admin/boards/create');
            exit;
        }

        $pdo = DB::connection();

        $stmt = $pdo->prepare("
            INSERT INTO boards (name, code, description, is_active, created_at, updated_at)
            VALUES (?, ?, ?, ?, NOW(), NOW())
        ");
        $stmt->execute([
            $name,
            $code,
            $description !== '' ? $description : null,
            $isActive,
        ]);
        $showOnHome = isset($_POST['show_on_home']) ? 1 : 0;
        header('Location: /admin/boards');
        exit;
    }
    public function showModal(): void
    {
        $this->requireAdmin();

        $boardId = (int)($_GET['id'] ?? 0);

        if ($boardId <= 0) {
            http_response_code(400);
            echo 'Board ID is required';
            return;
        }

        $pdo = DB::connection();

        $stmt = $pdo->prepare("
        SELECT 
            b.*,
            COUNT(t.id) AS task_count,
            SUM(CASE WHEN t.status = 'NEW' THEN 1 ELSE 0 END) AS new_count,
            SUM(CASE WHEN t.status = 'IN_PROGRESS' THEN 1 ELSE 0 END) AS in_progress_count,
            SUM(CASE WHEN t.status = 'REVIEW' THEN 1 ELSE 0 END) AS review_count,
            SUM(CASE WHEN t.status = 'DONE' THEN 1 ELSE 0 END) AS done_count,
            SUM(CASE WHEN t.status = 'CANCELED' THEN 1 ELSE 0 END) AS canceled_count,
            SUM(CASE WHEN t.status = 'OVERDUE' THEN 1 ELSE 0 END) AS overdue_count
        FROM boards b
        LEFT JOIN tasks t ON t.board_id = b.id
        WHERE b.id = ?
        GROUP BY b.id
        LIMIT 1
    ");
        $stmt->execute([$boardId]);
        $board = $stmt->fetch();

        if (!$board) {
            http_response_code(404);
            echo 'Board not found';
            return;
        }

        View::render('admin/boards/modal', [
            'board' => $board,
            'user' => Auth::user(),
        ], null);
    }
    public function access(): void
    {
        $this->requireAdmin();

        $boardId = (int)($_GET['id'] ?? 0);

        if ($boardId <= 0) {
            http_response_code(400);
            echo 'Board ID is required';
            return;
        }

        $pdo = DB::connection();

        $stmt = $pdo->prepare("
        SELECT id, name, code, description
        FROM boards
        WHERE id = ?
        LIMIT 1
    ");
        $stmt->execute([$boardId]);
        $board = $stmt->fetch();

        if (!$board) {
            http_response_code(404);
            echo 'Доска не найдена';
            return;
        }

        $groups = $pdo->query("
        SELECT id, name
        FROM ad_groups
        ORDER BY name ASC
    ")->fetchAll();

        $stmt = $pdo->prepare("
        SELECT group_id
        FROM board_access_groups
        WHERE board_id = ?
    ");
        $stmt->execute([$boardId]);
        $selectedGroupIds = array_map('intval', array_column($stmt->fetchAll(), 'group_id'));

        View::render('admin/boards/access', [
            'board' => $board,
            'groups' => $groups,
            'selectedGroupIds' => $selectedGroupIds,
            'user' => Auth::user(),
        ]);
    }

    public function saveAccess(): void
    {
        $this->requireAdmin();

        $boardId = (int)($_POST['board_id'] ?? 0);
        $groupIds = $_POST['group_ids'] ?? [];

        if ($boardId <= 0) {
            $_SESSION['error'] = 'Некорректная доска';
            header('Location: /admin/boards');
            exit;
        }

        $pdo = DB::connection();
        $pdo->beginTransaction();

        try {
            $stmt = $pdo->prepare("DELETE FROM board_access_groups WHERE board_id = ?");
            $stmt->execute([$boardId]);

            if (is_array($groupIds)) {
                $stmt = $pdo->prepare("
                INSERT INTO board_access_groups (board_id, group_id, created_at)
                VALUES (?, ?, NOW())
            ");

                foreach ($groupIds as $groupId) {
                    $groupId = (int)$groupId;
                    if ($groupId > 0) {
                        $stmt->execute([$boardId, $groupId]);
                    }
                }
            }

            $pdo->commit();
            $_SESSION['success'] = 'Права доступа к доске сохранены';
        } catch (\Throwable $e) {
            $pdo->rollBack();
            $_SESSION['error'] = 'Ошибка сохранения прав: ' . $e->getMessage();
        }

        header('Location: /admin/boards/access?id=' . $boardId);
        exit;
    }
    public function statuses(): void
    {
        $this->requireAdmin();

        $boardId = (int)($_GET['id'] ?? 0);

        if ($boardId <= 0) {
            http_response_code(400);
            echo 'Board ID is required';
            return;
        }

        $pdo = DB::connection();

        $stmt = $pdo->prepare("SELECT id, name, code FROM boards WHERE id = ? LIMIT 1");
        $stmt->execute([$boardId]);
        $board = $stmt->fetch();

        if (!$board) {
            http_response_code(404);
            echo 'Доска не найдена';
            return;
        }

        $stmt = $pdo->prepare("
        SELECT *
        FROM board_statuses
        WHERE board_id = ?
        ORDER BY sort_order ASC, id ASC
    ");
        $stmt->execute([$boardId]);
        $statuses = $stmt->fetchAll();

        View::render('admin/boards/statuses/index', [
            'board' => $board,
            'statuses' => $statuses,
            'user' => Auth::user(),
        ]);
    }

    public function createStatus(): void
    {
        $this->requireAdmin();

        $boardId = (int)($_GET['board_id'] ?? 0);

        $pdo = DB::connection();
        $stmt = $pdo->prepare("SELECT id, name, code FROM boards WHERE id = ? LIMIT 1");
        $stmt->execute([$boardId]);
        $board = $stmt->fetch();

        if (!$board) {
            http_response_code(404);
            echo 'Доска не найдена';
            return;
        }

        View::render('admin/boards/statuses/create', [
            'board' => $board,
            'user' => Auth::user(),
        ]);
    }

    public function storeStatus(): void
    {
        $this->requireAdmin();

        $boardId = (int)($_POST['board_id'] ?? 0);
        $code = trim($_POST['code'] ?? '');
        $name = trim($_POST['name'] ?? '');
        $color = trim($_POST['color'] ?? 'secondary');
        $sortOrder = (int)($_POST['sort_order'] ?? 100);
        $isDone = isset($_POST['is_done']) ? 1 : 0;
        $isActive = isset($_POST['is_active']) ? 1 : 0;

        if ($boardId <= 0 || $code === '' || $name === '') {
            $_SESSION['error'] = 'Заполните обязательные поля статуса';
            header('Location: /admin/boards/statuses/create?board_id=' . $boardId);
            exit;
        }

        $pdo = DB::connection();

        $stmt = $pdo->prepare("
        INSERT INTO board_statuses (
            board_id, code, name, color, sort_order, is_done, is_active, created_at, updated_at
        ) VALUES (?, ?, ?, ?, ?, ?, ?, NOW(), NOW())
    ");
        $stmt->execute([
            $boardId,
            $code,
            $name,
            $color,
            $sortOrder,
            $isDone,
            $isActive,
        ]);

        header('Location: /admin/boards/statuses?id=' . $boardId);
        exit;
    }

    public function editStatus(): void
    {
        $this->requireAdmin();

        $statusId = (int)($_GET['id'] ?? 0);

        $pdo = DB::connection();
        $stmt = $pdo->prepare("
        SELECT bs.*, b.name AS board_name, b.code AS board_code
        FROM board_statuses bs
        INNER JOIN boards b ON b.id = bs.board_id
        WHERE bs.id = ?
        LIMIT 1
    ");
        $stmt->execute([$statusId]);
        $status = $stmt->fetch();

        if (!$status) {
            http_response_code(404);
            echo 'Статус не найден';
            return;
        }

        View::render('admin/boards/statuses/edit', [
            'status' => $status,
            'user' => Auth::user(),
        ]);
    }

    public function updateStatus(): void
    {
        $this->requireAdmin();

        $statusId = (int)($_POST['id'] ?? 0);
        $code = trim($_POST['code'] ?? '');
        $name = trim($_POST['name'] ?? '');
        $color = trim($_POST['color'] ?? 'secondary');
        $sortOrder = (int)($_POST['sort_order'] ?? 100);
        $isDone = isset($_POST['is_done']) ? 1 : 0;
        $isActive = isset($_POST['is_active']) ? 1 : 0;

        if ($statusId <= 0 || $code === '' || $name === '') {
            $_SESSION['error'] = 'Заполните обязательные поля';
            header('Location: /admin');
            exit;
        }

        $pdo = DB::connection();

        $stmt = $pdo->prepare("SELECT board_id FROM board_statuses WHERE id = ? LIMIT 1");
        $stmt->execute([$statusId]);
        $boardId = (int)$stmt->fetchColumn();

        $stmt = $pdo->prepare("
        UPDATE board_statuses
        SET
            code = ?,
            name = ?,
            color = ?,
            sort_order = ?,
            is_done = ?,
            is_active = ?,
            updated_at = NOW()
        WHERE id = ?
    ");
        $stmt->execute([
            $code,
            $name,
            $color,
            $sortOrder,
            $isDone,
            $isActive,
            $statusId,
        ]);

        header('Location: /admin/boards/statuses?id=' . $boardId);
        exit;
    }
    public function delete(): void
    {
        $this->requireAdmin();

        $boardId = (int)($_POST['id'] ?? 0);

        if ($boardId <= 0) {
            $_SESSION['error'] = 'Доска не найдена';
            header('Location: /admin/boards');
            exit;
        }

        $pdo = DB::connection();

        $stmt = $pdo->prepare("
        SELECT id, name, code
        FROM boards
        WHERE id = ?
        LIMIT 1
    ");
        $stmt->execute([$boardId]);
        $board = $stmt->fetch();

        if (!$board) {
            $_SESSION['error'] = 'Доска не найдена';
            header('Location: /admin/boards');
            exit;
        }

        $stmt = $pdo->prepare("DELETE FROM boards WHERE id = ?");
        $stmt->execute([$boardId]);

        $_SESSION['success'] = 'Доска "' . ($board['name'] ?? '') . '" удалена вместе со связанными данными';
        header('Location: /admin/boards');
        exit;
    }
    public function edit(): void
    {
        $this->requireAdmin();

        $boardId = (int)($_GET['id'] ?? 0);

        if ($boardId <= 0) {
            http_response_code(400);
            echo 'Board ID is required';
            return;
        }

        $pdo = DB::connection();

        $stmt = $pdo->prepare("
            SELECT id, name, code, description, is_active, show_on_home
            FROM boards
            WHERE id = ?
            LIMIT 1
        ");
        $stmt->execute([$boardId]);
        $board = $stmt->fetch();

        if (!$board) {
            http_response_code(404);
            echo 'Доска не найдена';
            return;
        }

        View::render('admin/boards/edit', [
            'board' => $board,
            'user' => Auth::user(),
        ]);
    }

    public function update(): void
    {
        $this->requireAdmin();

        $boardId = (int)($_POST['id'] ?? 0);
        $name = trim((string)($_POST['name'] ?? ''));
        $code = trim((string)($_POST['code'] ?? ''));
        $description = trim((string)($_POST['description'] ?? ''));
        $isActive = isset($_POST['is_active']) ? 1 : 0;

        if ($boardId <= 0 || $name === '' || $code === '') {
            $_SESSION['error'] = 'Заполните название и код доски';
            header('Location: /admin/boards/edit?id=' . $boardId);
            exit;
        }

        $pdo = DB::connection();

        try {
            $stmt = $pdo->prepare("
            UPDATE boards
            SET
                name = ?,
                code = ?,
                description = ?,
                is_active = ?,
                updated_at = NOW()
            WHERE id = ?
        ");
            $stmt->execute([
                $name,
                $code,
                $description !== '' ? $description : null,
                $isActive,
                $boardId,
            ]);

            $_SESSION['success'] = 'Доска обновлена';
        } catch (\PDOException $e) {
            $_SESSION['error'] = 'Не удалось обновить доску: ' . $e->getMessage();
            header('Location: /admin/boards/edit?id=' . $boardId);
            exit;
        }
        $showOnHome = isset($_POST['show_on_home']) ? 1 : 0;
        header('Location: /admin/boards');
        exit;
    }
    public function saveAll(): void
    {
        $pdo = DB::connection();

        $boardId = (int)$_POST['board_id'];

        // === ОБНОВЛЕНИЕ ДОСКИ ===
        $stmt = $pdo->prepare("
        UPDATE boards SET
            name = ?,
            code = ?,
            description = ?,
            is_active = ?,
            show_on_home = ?
        WHERE id = ?
    ");

        $stmt->execute([
            $_POST['name'],
            $_POST['code'],
            $_POST['description'] ?? null,
            isset($_POST['is_active']) ? 1 : 0,
            isset($_POST['show_on_home']) ? 1 : 0,
            $boardId
        ]);

        // === КАСТОМНЫЕ ПОЛЯ ===
        if (!empty($_POST['fields'])) {
            foreach ($_POST['fields'] as $field) {

                if (!empty($field['delete'])) {
                    $pdo->prepare("DELETE FROM board_fields WHERE id = ?")
                        ->execute([$field['id']]);
                    continue;
                }

                $pdo->prepare("
                UPDATE board_fields
                SET name = ?, field_type = ?
                WHERE id = ?
            ")->execute([
                    $field['name'],
                    $field['type'],
                    $field['id']
                ]);
            }
        }

        // === НОВЫЕ ПОЛЯ ===
        if (!empty($_POST['new_fields'])) {
            foreach ($_POST['new_fields'] as $f) {
                if (empty($f['name'])) continue;

                $pdo->prepare("
                INSERT INTO board_fields (board_id, code, name)
                VALUES (?, ?, ?)
            ")->execute([
                    $boardId,
                    strtolower(preg_replace('/[^a-z0-9]/', '_', $f['name'])),
                    $f['name']
                ]);
            }
        }

        header('Location: ' . $_SERVER['HTTP_REFERER']);
    }
}