<?php

namespace App\Http\Controllers\Api\V1\SuperAdmin;

use App\Http\Controllers\Api\V1\ApiController;
use App\Http\Requests\SuperAdmin\StoreSuperAdminUserRequest;
use App\Http\Resources\SuperAdmin\SuperAdminUserResource;
use App\Models\NotificationPreference;
use App\Models\PartnerStore;
use App\Models\StoreInventory;
use App\Models\User;
use Illuminate\Http\JsonResponse;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Facades\Hash;

class SuperAdminUserController extends ApiController
{
    public function index(Request $request): JsonResponse
    {
        $request->validate([
            'role' => ['nullable', 'string'],
            'status' => ['nullable', 'string'],
            'tenant_id' => ['nullable', 'integer'],
            'q' => ['nullable', 'string', 'max:100'],
            'per_page' => ['nullable', 'integer', 'min:1', 'max:100'],
        ]);

        $perPage = (int) $request->input('per_page', 25);

        $users = User::query()
            ->with(['tenant'])
            ->when($request->filled('role'), fn ($q) => $q->where('role', $request->string('role')))
            ->when($request->filled('status'), fn ($q) => $q->where('status', $request->string('status')))
            ->when($request->filled('tenant_id'), fn ($q) => $q->where('tenant_id', $request->integer('tenant_id')))
            ->when($request->filled('q'), function ($q) use ($request) {
                $term = '%'.$request->string('q').'%';
                $q->where(function ($qq) use ($term) {
                    $qq->where('email', 'like', $term)
                        ->orWhere('phone', 'like', $term)
                        ->orWhere('first_name', 'like', $term)
                        ->orWhere('last_name', 'like', $term);
                });
            })
            ->orderByDesc('id')
            ->paginate($perPage);

        return $this->ok(
            SuperAdminUserResource::collection($users),
            null,
            [
                'page' => $users->currentPage(),
                'per_page' => $users->perPage(),
                'total' => $users->total(),
                'last_page' => $users->lastPage(),
            ],
        );
    }

    public function store(StoreSuperAdminUserRequest $request): JsonResponse
    {
        $data = $request->validated();

        $user = DB::transaction(function () use ($data) {
            $user = User::create([
                'tenant_id' => $data['tenant_id'] ?? null,
                'first_name' => $data['first_name'],
                'middle_name' => $data['middle_name'] ?? null,
                'last_name' => $data['last_name'],
                'email' => $data['email'],
                'phone' => $data['phone'],
                'password' => Hash::make($data['password']),
                'role' => $data['role'],
                'status' => User::STATUS_PENDING,
                'preferred_language' => $data['preferred_language'] ?? 'en',
            ]);

            $user->assignRole($data['role']);

            $profileClass = User::profileModelForRole($data['role']);
            if ($profileClass) {
                $profileClass::create(['user_id' => $user->id]);
            }

            NotificationPreference::create([
                'user_id' => $user->id,
                'language' => $data['preferred_language'] ?? 'en',
            ]);

            // If store_partner, auto-create a shell store so they can access the dashboard
            if ($data['role'] === User::ROLE_STORE_PARTNER) {
                $store = PartnerStore::create([
                    'tenant_id' => $user->tenant_id,
                    'owner_user_id' => $user->id,
                    'business_name' => $user->first_name."'s Store",
                    'status' => PartnerStore::STATUS_ACTIVE,
                    'commission_rate_percent' => 10, // Default 10%
                ]);

                StoreInventory::create([
                    'store_id' => $store->id,
                    'current_code_balance' => 0,
                ]);
            }

            return $user;
        });

        return $this->created(
            new SuperAdminUserResource($user->load(['tenant'])),
            'User account created successfully in pending status'
        );
    }

    public function show(User $user): JsonResponse
    {
        $user->load(['tenant']);

        return $this->ok(new SuperAdminUserResource($user));
    }

    public function update(StoreSuperAdminUserRequest $request, User $user): JsonResponse
    {
        $data = $request->validated();

        DB::transaction(function () use ($user, $data) {
            $updateData = [
                'first_name' => $data['first_name'],
                'middle_name' => $data['middle_name'] ?? null,
                'last_name' => $data['last_name'],
                'email' => $data['email'],
                'phone' => $data['phone'],
                'role' => $data['role'],
                'tenant_id' => $data['tenant_id'] ?? null,
            ];

            if (! empty($data['password'])) {
                $updateData['password'] = Hash::make($data['password']);
            }

            $oldRole = $user->role;
            $user->update($updateData);

            if ($oldRole !== $data['role']) {
                $user->syncRoles([$data['role']]);

                // Delete old profile, create new profile if role changed
                $oldProfileClass = User::profileModelForRole($oldRole);
                if ($oldProfileClass) {
                    $oldProfileClass::where('user_id', $user->id)->delete();
                }

                $newProfileClass = User::profileModelForRole($data['role']);
                if ($newProfileClass) {
                    $newProfileClass::create(['user_id' => $user->id]);
                }
            }
        });

        return $this->ok(new SuperAdminUserResource($user->fresh()->load(['tenant'])), 'User updated successfully');
    }

    public function destroy(User $user): JsonResponse
    {
        if ($user->id === auth()->id()) {
            return $this->fail('You cannot delete your own account.', null, 422);
        }

        $user->delete();

        return $this->ok(null, 'User deleted successfully');
    }
}