<?php

namespace App\Services;

use App\Models\User;
use Illuminate\Support\Facades\Http;
use Illuminate\Support\Facades\Cache;
use Exception;
use Illuminate\Support\Facades\Log;
use Illuminate\Support\Str;
use App\Models\Asset;

class AdminService
{
    private $baseUrl;
    private $username;
    private $password;

    public function __construct()
    {
        $this->baseUrl = env('THINGSBOARD_URL', 'http://65.0.131.117:8080');
        $this->username = env('THINGSBOARD_USERNAME', 'tenant1@thingsboard.org');
        $this->password = env('THINGSBOARD_PASSWORD', 'tenant1');
    }

    public function getToken()
    {
        if (Cache::has('thingsboard_token')) {
            return Cache::get('thingsboard_token');
        }

        $response = Http::withHeaders([
            // 'accept' => 'application/json',
            'Content-Type' => 'application/json',
        ])
            ->post("{$this->baseUrl}api/auth/login", [
                'username' => $this->username,
                'password' => $this->password,
            ]);

        if ($response->successful()) {
            $token = $response->json('token');
            Cache::put('thingsboard_token', $token, now()->addMinutes(15));
            return $token;
        } else {
            Log::error("ThingsBoard Authentication Failed: " . $response->body());
            throw new Exception('Unable to authenticate with ThingsBoard: ' . $response->body());
        }
    }

    // public function createAsset(array $data)
    // {

    //     $token = $this->getToken();
    //     $payload = [
    //         // 'entityType' => $data['entity_type'] ?? 'ASSET',
    //         // 'createdTime' => $data['createdTime'] ?? now()->timestamp,
    //         // 'tenantId' => [
    //         //     'id' => $data['tenantId'] ?? Str::uuid()->toString(),
    //         //     // 'entityType' => 'TENANT'
    //         // ],
    //         'customerId' => [
    //             'id' => $data['customerId'] ?? null,
    //             'entityType' => 'CUSTOMER'
    //         ],
    //         'name' => $data['name'] ?? 'Default Asset',
    //         'type' => $data['type'] ?? 'Default Type',
    //         'label' => $data['label'] ?? '',
    //         // 'assetProfileId' => [
    //         //     'id' => $data['assetProfileId'] ?? Str::uuid()->toString(),
    //         //     // 'entityType' => 'ASSET_PROFILE'
    //         // ],
    //         // 'externalId' => [
    //         //     'id' => $data['externalId'] ?? Str::uuid()->toString(),
    //         //     'entityType' => 'ASSET'
    //         // ],
    //         'version' => $data['version'] ?? '1.0',
    //         'additionalInfo' => $data['additionalInfo'] ?? ['description' => 'Default asset description']
    //     ];

    //     $response = Http::withHeaders([
    //         'Authorization' => "Bearer $token",
    //         'Accept' => 'application/json',
    //         'Content-Type' => 'application/json',
    //     ])->withBody(json_encode($payload), 'application/json')
    //         ->post("{$this->baseUrl}/api/asset");
    //     Log::error('Error in creating asset: ' . $response);
    //     //    dd($response->json());
    //     if ($response->successful()) {
    //         return $response->json();
    //     } else {
    //         throw new Exception('Failed to create asset: ' . $response->body());
    //     }
    // }

    // public function createAsset(array $data)
    // {
    //     $token = $this->getToken();

    //     $payload = [
    //         'entityType' => $data['entity_type'], // Always 'ASSET' from backend
    //         'createdTime' => $data['createdTime'], // Always from backend
    //         'customerId' => [
    //             'id' => $data['customerId'],
    //             'entityType' => 'CUSTOMER'
    //         ],
    //         'name' => $data['name'],
    //         'type' => $data['type'],
    //         'label' => $data['label'],
    //         'version' => $data['version'],
    //         'additionalInfo' => $data['additionalInfo'],
    //     ];

    //     $response = Http::withHeaders([
    //         'Authorization' => "Bearer $token",
    //         'Accept' => 'application/json',
    //         'Content-Type' => 'application/json',
    //     ])->withBody(json_encode($payload), 'application/json')
    //         ->post("{$this->baseUrl}/api/asset");

    //     if ($response->successful()) {
    //         return $response->json();
    //     } else {
    //         Log::error('Error in creating asset: ' . $response->body());
    //         throw new Exception('Failed to create asset: ' . $response->body());
    //     }
    // }

    public function createAsset(array $data)
    {
        $token = $this->getToken();

        $payload = [
            'entityType' => $data['entity_type'], // Always 'ASSET' from backend
            'createdTime' => $data['createdTime'],
            'customerId' => [
                'id' => $data['customerId'],
                'entityType' => 'CUSTOMER'
            ],
            'name' => $data['name'],
            'type' => $data['type'],
            'label' => $data['label'],
            // 'version' => removed to let backend default to 1
            // 'additionalInfo' => $data['additionalInfo'],
            'additionalInfo' => ['description' => $data['additionalInfo'] ?? 'User description'],
        ];

        $response = Http::withHeaders([
            'Authorization' => "Bearer $token",
            'Accept' => 'application/json',
            'Content-Type' => 'application/json',
        ])->withBody(json_encode($payload), 'application/json')
            ->post("{$this->baseUrl}api/asset");

        if ($response->successful()) {
            return $response->json();
        } else {
            Log::error('Error in creating asset: ' . $response->body());
            throw new Exception('Failed to create asset: ' . $response->body());
        }
    }


    public function createOrUpdateCustomer(array $data)
    {
        $token = $this->getToken();
        // Log::info('Getting data before payload', ['data' => json_encode($data, JSON_PRETTY_PRINT)]);

        $payload = [
            'title' => $data['title'] ?? 'Default Title',
            'email' => $data['email'] ?? 'default@example.com',
            'country' => $data['country'] ?? 'India',
            'state' => $data['state'] ?? 'Karnataka',
            'city' => $data['city'] ?? 'Bangalore',
            'zip' => $data['zip'] ?? '560001',
            'name' => $data['name'] ?? 'John Doe',
            'address' => $data['address'] ?? '123, 4th Cross, 5th Main',
            'address2' => $data['address2'] ?? 'Near Park',
            'phone' => $data['phone'] ?? '1234567890',
            'version' => $data['version'] ?? '794665488',
            'additionalInfo' => [
                'description' => $data['additionalInfo'] ?? 'User description'
            ],

        ];

        if (!empty($data['id']) && is_array($data['id']) && isset($data['id']['id'])) {
            $payload['id'] = [
                'id' => $data['id']['id'],
                'entityType' => 'CUSTOMER'
            ];
        }

        // Check if `tenantId` exists and assign correctly
        if (!empty($data['tenantId']) && is_array($data['tenantId']) && isset($data['tenantId']['id'])) {
            $payload['tenantId'] = [
                'id' => $data['tenantId']['id'],
                'entityType' => 'TENANT',
            ];
        }

        // Log::info('Final Payload:', ['payload' => json_encode($payload, JSON_PRETTY_PRINT)]);


        $url = "{$this->baseUrl}api/customer";
        $method = 'post';
        // Send request
        $response = Http::withHeaders([
            'Authorization' => "Bearer $token",
            'Accept' => 'application/json',
            'Content-Type' => 'application/json',
        ])->$method($url, $payload);
        if ($response->successful()) {
            return $response->json();
        } else {
            throw new Exception('Failed to process customer: ' . $response->body());
        }
    }


    public function createUser(array $data)
    {
        try {
            $token = $this->getToken();

            // Validate required fields
            if (!isset($data['tenant_id'])) {
                throw new \Exception('tenant_id is required');
            }
            $randomNumber = rand(1000, 9999);
            $email = "dummy{$randomNumber}@example.com";

            // Prepare the payload with required fields
            $payload = [

                'email' => $email?? '',
                'authority' => $data['authority'] ?? 'CUSTOMER_USER',
                'firstName' => $data['first_name'] ?? '',
                'lastName' => $data['last_name'] ?? '',
                'name' => $data['name'] ?? ($data['first_name'] . ' ' . $data['last_name'] ?? ''),
                'phone' => $data['phone'] ?? '',
                'tenantId' => [
                    'id' => 'bbab7c17-2f19-4eff-9ce7-63870e02b522',
                    'entityType' => 'TENANT'
                ],
                'additionalInfo' => [
                    'description' => $data['description'] ?? ''
                ]
            ];

            // Only add customerId if provided
            if (!empty($data['customer_id'])) {
                $payload['customerId'] = [
                    'id' => $data['customer_id'],
                    'entityType' => 'CUSTOMER'
                ];
            }

            $response = Http::withHeaders([
                'Authorization' => "Bearer $token",
                'accept' => 'application/json',
                'Content-Type' => 'application/json',
            ])
                ->timeout(30)
                ->post("{$this->baseUrl}api/user", $payload);

            if ($response->successful()) {
                return $response->json();
            }

            // Log the full error details
            $errorDetails = [
                'status' => $response->status(),
                'response' => $response->json() ?? $response->body(),
                'payload' => $payload
            ];
            Log::error('ThingsBoard API Error', $errorDetails);

            return [
                'error' => true,
                'message' => 'Failed to create user in ThingsBoard',
                'details' => $errorDetails
            ];
        } catch (\Exception $e) {
            Log::error('ThingsBoard Service Exception: ' . $e->getMessage());
            return [
                'error' => true,
                'message' => $e->getMessage(),
                'details' => 'Failed to process user creation'
            ];
        }
    }


    public function deleteAsset(array $data)
    {
        $token = $this->getToken();

        if (!isset($data['assetId']) || empty($data['assetId'])) {
            throw new Exception('Asset ID is required for deletion.');
        }

        $assetId = $data['assetId'];
        $response = Http::withHeaders([
            'Authorization' => "Bearer $token",
            'Accept' => 'application/json',
            'Content-Type' => 'application/json',
        ])->delete("{$this->baseUrl}api/asset/{$assetId}");

        Log::info('Asset Deletion Response: ' . $response);

        if ($response->successful()) {
            return [
                'success' => true,
                'message' => 'Asset deleted successfully.',
                'data' => $response->json()
            ];
        } else {
            throw new Exception('Failed to delete asset: ' . $response->body());
        }
    }

    public function assignAssetToUser(array $data)
    {
        $token = $this->getToken();

        // Validate required parameters
        if (!isset($data['assetId']) || empty($data['assetId'])) {
            throw new Exception('Asset ID is required.');
        }

        if (!isset($data['userId']) || empty($data['userId'])) {
            throw new Exception('User ID is required.');
        }

        $assetId = $data['assetId'];
        $userId = $data['userId'];
        // dd($data);
        // Retrieve user details to get the customer ID
        $user = User::find($userId);
        if (!$user) {
            throw new Exception('User not found.');
        }

        // Get the ThingsBoard customer ID linked to the user
        // $customerId = $user->userId ?? null;
        $customerId = $user->userId ?? null;   // ✅ Use the correct column name

        if (!$customerId) {
            throw new Exception('User does not have an associated customer ID.');
        }

        // API request to assign asset to customer (based on user's customer ID)
        $response = Http::withHeaders([
            'Authorization' => "Bearer $token",
            'Accept' => 'application/json',
            'Content-Type' => 'application/json',
        ])->post("{$this->baseUrl}api/customer/{$customerId}/asset/{$assetId}");

        // Log the response for debugging purposes
        Log::info('Asset Assignment Response: ' . $response->body());

        // Handle API responses
        if ($response->successful()) {
            return [
                'success' => true,
                'message' => 'Asset assigned to user successfully.',
                'data' => $response->json()
            ];
        } else {
            throw new Exception('Failed to assign asset: ' . $response->body());
        }
    }
    public function deleteCustomer(array $data)
    {
        $token = $this->getToken();


        $url = "{$this->baseUrl}api/customer/{$data['customerId']}";

        $response = Http::withHeaders([
            'Authorization' => "Bearer $token",
            'Accept' => 'application/json',
        ])->delete($url);


        // If response body is empty, assume success
        if ($response->status() === 200 && empty($response->body())) {
            return ['message' => 'Customer deleted successfully'];
        }

        if ($response->successful()) {
            return $response->json();
        } else {
            throw new Exception('Failed to create customer: ' . $response->body());
        }

        throw new Exception('Failed to create user: ' . $response->body());
    }


    public function listUsers()
    {
        $token = $this->getToken();

        $response = Http::withHeaders([
            'X-Authorization' => "Bearer $token",
            'accept' => 'application/json',
            'Content-Type' => 'application/json',
        ])->get("{$this->baseUrl}api/users?pageSize=100&page=0");

        if ($response->successful()) {
            return $response->json();
        } else {
            throw new Exception('Failed to fetch users: ' . $response->body());
        }
    }

    public function deleteUser($userId)
    {
        try {
            $token = $this->getToken();

            $response = Http::withHeaders([
                'Authorization' => "Bearer $token",
                'accept' => 'application/json',
            ])->delete("{$this->baseUrl}api/user/{$userId}");

            if ($response->failed()) {
                Log::error('ThingsBoard deletion failed - Status: ' . $response->status() . ' - Body: ' . $response->body());

                return [
                    'error' => true,
                    'message' => $response->status() === 404
                        ? 'User not found in ThingsBoard'
                        : 'Failed to delete from ThingsBoard',
                    'details' => $response->json() ?? null,
                    'status' => $response->status()
                ];
            }

            return [
                'success' => true,
                'data' => $response->json(),
                'status' => 200
            ];
        } catch (Exception $e) {
            Log::error('ThingsBoard deletion exception: ' . $e->getMessage());
            return [
                'error' => true,
                'message' => 'Exception during ThingsBoard deletion',
                'details' => $e->getMessage()
            ];
        }
    }

    // public function activateUser(User $user, string $password, string $activateToken)
    // {
    //     try {
    //         $payload = [
    //             'activateToken' => $activateToken,
    //             'password' => $password
    //         ];

    //         $activationUrl = "{$this->baseUrl}/api/noauth/activate";

    //         $response = Http::withHeaders([
    //             'Content-Type' => 'application/json',
    //         ])->post($activationUrl, $payload);

    //         if (!$response->successful()) {
    //             Log::error("Failed to activate user in ThingsBoard. Error: " . $response->body());
    //             throw new \Exception('Failed to activate user: ' . $response->body());
    //         }

    //         Log::info("User activated successfully in ThingsBoard for User ID: {$user->id}");
    //     } catch (\Exception $e) {
    //         Log::error("Error activating user in ThingsBoard for User ID: {$user->id}. Exception: " . $e->getMessage());
    //         throw $e;
    //     }
    // }


    public function activateUser(User $user, string $password, string $activateToken)
    {
        try {
            // $dummyEmail = 'dummy+' . $user->id . '@example.com';
            $token = $this->getToken();

            // Step 1: Search for existing user by real email
            $searchResponse = Http::withHeaders([
                'Authorization' => "Bearer $token",
                'accept' => 'application/json'
            ])->get("{$this->baseUrl}api/users?pageSize=1&page=0&textSearch={$user->email}");

            if ($searchResponse->successful() && !empty($searchResponse['data'])) {
                $tbUser = $searchResponse['data'][0];
                $tbUserId = $tbUser['id']['id'];

                // Step 2: Update user email to dummy email
                Http::withHeaders([
                    'Authorization' => "Bearer $token",
                    'Content-Type' => 'application/json'
                ])->post("{$this->baseUrl}api/user", [
                    'id' => ['id' => $tbUserId],
                    // 'email' => $dummyEmail,
                    'authority' => $tbUser['authority'],
                    'firstName' => $tbUser['firstName'] ?? '',
                    'lastName' => $tbUser['lastName'] ?? '',
                    'tenantId' => $tbUser['tenantId'],
                    'customerId' => $tbUser['customerId'],
                    'additionalInfo' => $tbUser['additionalInfo'] ?? null,
                ]);

                // Log::info("ThingsBoard user email updated to dummy: {$dummyEmail}");
            }

            // Step 3: Activate account using dummy email
            $activationPayload = [
                'activateToken' => $activateToken,
                'password' => $password,
                // 'email' => $dummyEmail
            ];

            $activationUrl = "{$this->baseUrl}api/noauth/activate";

            $response = Http::withHeaders([
                'Content-Type' => 'application/json',
            ])->post($activationUrl, $activationPayload);

            if (!$response->successful()) {
                Log::error("Activation failed. Response: " . $response->body());
                throw new \Exception('Failed to activate user: ' . $response->body());
            }

            // Log::info("User activated in ThingsBoard with dummy email: {$dummyEmail}");

        } catch (\Exception $e) {
            Log::error("Error during ThingsBoard activation. Exception: " . $e->getMessage());
            throw $e;
        }
    }


    public function getUserByEmailThingsBoard(string $email)
    {
        Log::info("Fetching ThingsBoard ID by email: $email");

        $token = $this->getToken();

        // First, fetch the ThingsBoard ID by email
        $response = Http::withHeaders([
            'Authorization' => "Bearer $token",
            'accept' => 'application/json'
        ])->get("http://65.0.131.117:8080/api/users?pageSize=1&page=0&textSearch=$email");

        if ($response->successful()) {
            $data = $response->json()['data'] ?? [];

            if (!empty($data)) {
                $thingsboardUserId = $data[0]['id']['id'];
                Log::info("Found ThingsBoard ID: $thingsboardUserId");

                // Now fetch user by ID
                $userResponse = Http::withHeaders([
                    'Authorization' => "Bearer $token",
                    'accept' => 'application/json'
                ])->get("http://65.0.131.117:8080/api/user/$thingsboardUserId");

                if ($userResponse->successful()) {
                    return [
                        'status' => true,
                        'user' => $userResponse->json(),
                        'dashboard_url' => 'http://65.0.131.117:8080/dashboard'
                    ];
                } else {
                    Log::error("Failed to fetch user by ID. Status: " . $userResponse->status());
                    return [
                        'status' => false,
                        'message' => 'User not found in ThingsBoard by ID.'
                    ];
                }
            }
        }

        Log::error("Failed to fetch ThingsBoard ID. Status: " . $response->status());
        return [
            'status' => false,
            'message' => 'User not found in ThingsBoard by email.'
        ];
    }


    public function dashboardAdmin()
    {
        $token = $this->getToken();

        $response = Http::withHeaders([
            'Authorization' => "Bearer $token",
            'accept' => 'application/json',
        ])->get("{$this->baseUrl}api/users?pageSize=100&page=0");

        if ($response->successful()) {
            return $response->json();
        } else {
            throw new Exception('Failed to fetch users: ' . $response->body());
        }
    }
}