<?php

namespace App\Auth;

/**
 * Central permission catalog — 50 fine-grained permissions across 9 modules.
 * Mirrors the catalog in /tmp/service/new/01-TZ-rbac-utilizator-tehnician.md §2.3.
 *
 * Use these constants instead of magic strings:
 *   $user->can(Permissions::WORK_ORDERS_CREATE)
 */
class Permissions
{
    // Clients
    public const CLIENTS_VIEW_ALL = 'clients.view_all';
    public const CLIENTS_VIEW_OWN = 'clients.view_own';
    public const CLIENTS_CREATE = 'clients.create';
    public const CLIENTS_EDIT = 'clients.edit';
    public const CLIENTS_DELETE = 'clients.delete';
    public const CLIENTS_EXPORT = 'clients.export';

    // Vehicles
    public const VEHICLES_VIEW_ALL = 'vehicles.view_all';
    public const VEHICLES_CREATE = 'vehicles.create';
    public const VEHICLES_EDIT = 'vehicles.edit';
    public const VEHICLES_DELETE = 'vehicles.delete';

    // Work orders (Fișe)
    public const WORK_ORDERS_VIEW_ALL = 'work_orders.view_all';
    public const WORK_ORDERS_VIEW_OWN_ASSIGNED = 'work_orders.view_own_assigned';
    public const WORK_ORDERS_CREATE = 'work_orders.create';
    public const WORK_ORDERS_EDIT = 'work_orders.edit';
    public const WORK_ORDERS_DELETE = 'work_orders.delete';
    public const WORK_ORDERS_CHANGE_STATUS = 'work_orders.change_status';
    public const WORK_ORDERS_APPROVE_DISCOUNT_5 = 'work_orders.approve_discount_5';
    public const WORK_ORDERS_APPROVE_DISCOUNT_20 = 'work_orders.approve_discount_20';
    public const WORK_ORDERS_APPROVE_DISCOUNT_ANY = 'work_orders.approve_discount_any';
    public const WORK_ORDERS_PRINT = 'work_orders.print';

    // Finance
    public const FINANCE_VIEW_OVERVIEW = 'finance.view_overview';
    public const FINANCE_VIEW_PL = 'finance.view_pl';
    public const FINANCE_CREATE_PAYMENT = 'finance.create_payment';
    public const FINANCE_DELETE_PAYMENT = 'finance.delete_payment';
    public const FINANCE_CREATE_EXPENSE = 'finance.create_expense';
    public const FINANCE_EXPORT = 'finance.export';

    // Salaries
    public const SALARIES_VIEW_OWN = 'salaries.view_own';
    public const SALARIES_VIEW_ALL = 'salaries.view_all';
    public const SALARIES_CALCULATE = 'salaries.calculate';
    public const SALARIES_MARK_PAID = 'salaries.mark_paid';

    // Inventory
    public const INVENTORY_VIEW = 'inventory.view';
    public const INVENTORY_CREATE_PART = 'inventory.create_part';
    public const INVENTORY_EDIT_PART = 'inventory.edit_part';
    public const INVENTORY_DELETE_PART = 'inventory.delete_part';
    public const INVENTORY_ADJUST_STOCK = 'inventory.adjust_stock';
    public const INVENTORY_CREATE_PURCHASE = 'inventory.create_purchase';
    public const INVENTORY_RECEIVE_GOODS = 'inventory.receive_goods';

    // Suppliers
    public const SUPPLIERS_VIEW = 'suppliers.view';
    public const SUPPLIERS_EDIT = 'suppliers.edit';
    public const SUPPLIERS_DELETE = 'suppliers.delete';

    // Admin
    public const ADMIN_USERS_VIEW = 'admin.users.view';
    public const ADMIN_USERS_MANAGE = 'admin.users.manage';
    public const ADMIN_ROLES_MANAGE = 'admin.roles.manage';
    public const ADMIN_SETTINGS_EDIT = 'admin.settings.edit';
    public const ADMIN_INTEGRATIONS = 'admin.settings.integrations';
    public const ADMIN_API_TOKENS_MANAGE = 'admin.api_tokens.manage';
    public const ADMIN_AUDIT_LOG_VIEW = 'admin.audit_log.view';
    public const ADMIN_BACKUP_DOWNLOAD = 'admin.backup.download';

    // AI & Analytics
    public const AI_ASSISTANT_USE = 'ai_assistant.use';
    public const AI_ASSISTANT_CONFIGURE_KEYS = 'ai_assistant.configure_keys';
    public const ANALYTICS_VIEW = 'analytics.view';

    /** Full list — used by seeder. */
    public static function all(): array
    {
        return [
            self::CLIENTS_VIEW_ALL, self::CLIENTS_VIEW_OWN, self::CLIENTS_CREATE, self::CLIENTS_EDIT,
            self::CLIENTS_DELETE, self::CLIENTS_EXPORT,
            self::VEHICLES_VIEW_ALL, self::VEHICLES_CREATE, self::VEHICLES_EDIT, self::VEHICLES_DELETE,
            self::WORK_ORDERS_VIEW_ALL, self::WORK_ORDERS_VIEW_OWN_ASSIGNED, self::WORK_ORDERS_CREATE,
            self::WORK_ORDERS_EDIT, self::WORK_ORDERS_DELETE, self::WORK_ORDERS_CHANGE_STATUS,
            self::WORK_ORDERS_APPROVE_DISCOUNT_5, self::WORK_ORDERS_APPROVE_DISCOUNT_20,
            self::WORK_ORDERS_APPROVE_DISCOUNT_ANY, self::WORK_ORDERS_PRINT,
            self::FINANCE_VIEW_OVERVIEW, self::FINANCE_VIEW_PL, self::FINANCE_CREATE_PAYMENT,
            self::FINANCE_DELETE_PAYMENT, self::FINANCE_CREATE_EXPENSE, self::FINANCE_EXPORT,
            self::SALARIES_VIEW_OWN, self::SALARIES_VIEW_ALL, self::SALARIES_CALCULATE, self::SALARIES_MARK_PAID,
            self::INVENTORY_VIEW, self::INVENTORY_CREATE_PART, self::INVENTORY_EDIT_PART, self::INVENTORY_DELETE_PART,
            self::INVENTORY_ADJUST_STOCK, self::INVENTORY_CREATE_PURCHASE, self::INVENTORY_RECEIVE_GOODS,
            self::SUPPLIERS_VIEW, self::SUPPLIERS_EDIT, self::SUPPLIERS_DELETE,
            self::ADMIN_USERS_VIEW, self::ADMIN_USERS_MANAGE, self::ADMIN_ROLES_MANAGE,
            self::ADMIN_SETTINGS_EDIT, self::ADMIN_INTEGRATIONS, self::ADMIN_API_TOKENS_MANAGE,
            self::ADMIN_AUDIT_LOG_VIEW, self::ADMIN_BACKUP_DOWNLOAD,
            self::AI_ASSISTANT_USE, self::AI_ASSISTANT_CONFIGURE_KEYS, self::ANALYTICS_VIEW,
        ];
    }

    /** Groups for UI rendering: module → list of permissions. */
    public static function grouped(): array
    {
        $groups = [];
        foreach (self::all() as $slug) {
            [$module] = explode('.', $slug, 2);
            $groups[$module][] = $slug;
        }
        return $groups;
    }

    public static function labels(): array
    {
        return [
            'clients' => 'Clienți',
            'vehicles' => 'Mașini',
            'work_orders' => 'Fișe lucru',
            'finance' => 'Finanțe',
            'salaries' => 'Salarii',
            'inventory' => 'Stoc',
            'suppliers' => 'Furnizori',
            'admin' => 'Administrare',
            'ai_assistant' => 'AI Assistant',
            'analytics' => 'Analitică',
        ];
    }

    /**
     * Role-permission matrix per TZ §2.4.
     * Returns: ['owner' => [perm1, perm2, ...], ...]
     */
    public static function roleMatrix(): array
    {
        $all = self::all();
        $matrix = [];

        // owner = everything
        $matrix['owner'] = $all;

        // admin = everything except billing-only stuff (we don't have that yet, so = all)
        $matrix['admin'] = $all;

        // manager: operations + reporting, no destructive
        $matrix['manager'] = [
            self::CLIENTS_VIEW_ALL, self::CLIENTS_CREATE, self::CLIENTS_EDIT, self::CLIENTS_EXPORT,
            self::VEHICLES_VIEW_ALL, self::VEHICLES_CREATE, self::VEHICLES_EDIT,
            self::WORK_ORDERS_VIEW_ALL, self::WORK_ORDERS_VIEW_OWN_ASSIGNED, self::WORK_ORDERS_CREATE,
            self::WORK_ORDERS_EDIT, self::WORK_ORDERS_CHANGE_STATUS,
            self::WORK_ORDERS_APPROVE_DISCOUNT_5, self::WORK_ORDERS_APPROVE_DISCOUNT_20,
            self::WORK_ORDERS_PRINT,
            self::FINANCE_VIEW_OVERVIEW, self::FINANCE_CREATE_PAYMENT, self::FINANCE_CREATE_EXPENSE,
            self::SALARIES_VIEW_OWN,
            self::INVENTORY_VIEW, self::INVENTORY_CREATE_PART, self::INVENTORY_EDIT_PART,
            self::INVENTORY_ADJUST_STOCK, self::INVENTORY_CREATE_PURCHASE, self::INVENTORY_RECEIVE_GOODS,
            self::SUPPLIERS_VIEW, self::SUPPLIERS_EDIT,
            self::AI_ASSISTANT_USE,
            self::ANALYTICS_VIEW,
        ];

        // accountant: finance + reporting only
        $matrix['accountant'] = [
            self::CLIENTS_VIEW_ALL, self::CLIENTS_EXPORT,
            self::VEHICLES_VIEW_ALL,
            self::WORK_ORDERS_VIEW_ALL,
            self::FINANCE_VIEW_OVERVIEW, self::FINANCE_VIEW_PL, self::FINANCE_CREATE_PAYMENT,
            self::FINANCE_DELETE_PAYMENT, self::FINANCE_CREATE_EXPENSE, self::FINANCE_EXPORT,
            self::SALARIES_VIEW_OWN, self::SALARIES_VIEW_ALL, self::SALARIES_CALCULATE, self::SALARIES_MARK_PAID,
            self::INVENTORY_VIEW,
            self::SUPPLIERS_VIEW,
            self::ANALYTICS_VIEW,
            self::AI_ASSISTANT_USE,
        ];

        // receptionist: front-desk operations
        $matrix['receptionist'] = [
            self::CLIENTS_VIEW_ALL, self::CLIENTS_CREATE, self::CLIENTS_EDIT,
            self::VEHICLES_VIEW_ALL, self::VEHICLES_CREATE, self::VEHICLES_EDIT,
            self::WORK_ORDERS_VIEW_ALL, self::WORK_ORDERS_CREATE, self::WORK_ORDERS_EDIT,
            self::WORK_ORDERS_CHANGE_STATUS, self::WORK_ORDERS_APPROVE_DISCOUNT_5, self::WORK_ORDERS_PRINT,
            self::FINANCE_CREATE_PAYMENT,
            self::SALARIES_VIEW_OWN,
            self::INVENTORY_VIEW,
            self::AI_ASSISTANT_USE,
        ];

        // mechanic: only own WOs + inventory view
        $matrix['mechanic'] = [
            self::WORK_ORDERS_VIEW_OWN_ASSIGNED, self::WORK_ORDERS_CHANGE_STATUS,
            self::INVENTORY_VIEW,
            self::SALARIES_VIEW_OWN,
        ];

        // viewer: read-only
        $matrix['viewer'] = [
            self::CLIENTS_VIEW_ALL,
            self::VEHICLES_VIEW_ALL,
            self::WORK_ORDERS_VIEW_ALL,
            self::INVENTORY_VIEW,
            self::SUPPLIERS_VIEW,
            self::AI_ASSISTANT_USE,
        ];

        return $matrix;
    }

    public static function roleLabels(): array
    {
        return [
            'owner' => 'Proprietar',
            'admin' => 'Administrator',
            'manager' => 'Manager',
            'accountant' => 'Contabil',
            'receptionist' => 'Recepție',
            'mechanic' => 'Mecanic',
            'viewer' => 'Vizitator',
        ];
    }
}