<?php

namespace App\Controllers;

use App\Controllers\BaseController;
use CodeIgniter\HTTP\ResponseInterface;
use CodeIgniter\API\ResponseTrait;
use App\Models\InvoiceItemModel;
use App\Models\InvoiceModel;
use App\Models\InvoiceUtrModel;
use App\Models\PolicyTransactionModel;
use App\Models\AuditHistoryModel;

use Dompdf\Dompdf;
use Dompdf\Options;

class PayoutController extends BaseController
{   
    use ResponseTrait;
    protected $myLogger;
    protected $invoiceItemModel;
    protected $invoiceModel;
    protected $invoiceUtrModel;
    protected $policyTransactionModel;
    protected $payout_status;

    protected $auditHistory;
        
    public function __construct()
    {
        set_session_context('PayoutController');
        $this->myLogger = \Config\Services::mylogger();

        $this->payout_status = [
            1 => "Pending",
            2 => "Completed",
        ];

        $this->invoiceItemModel = new InvoiceItemModel();
        $this->invoiceModel = new InvoiceModel();
        $this->invoiceUtrModel = new InvoiceUtrModel();
        $this->policyTransactionModel = new PolicyTransactionModel();
        $this->auditHistory = new AuditHistoryModel();
    }

    public function payoutList()
    {   
        // for filtering list
        if($this->request->is('post')){
            try{
                $data = $this->request->getPost();
                // print_r($data); die;

                // $agent_id   = $data['agent_id'] ?? null; because dropdown hided
                $pos_id   = $data['pos_id'] ?? null;
                $status_id  = $data['status_id'] ?? null;
                $start_date = $data['start_date'] ?? null;
                $end_date   = $data['end_date'] ?? null;

                // $payout_data = $this->invoiceModel->invoiceList($agent_id, $status_id, $start_date, $end_date); // because dropdown hided 
                $payout_data = $this->invoiceModel->invoiceList($pos_id, $status_id, $start_date, $end_date);

                $payout_data['payout_list_data'] = $payout_data;
                $payout_data = view('payout_list', $payout_data);

                if(!empty($payout_data)){
                    return $this->respond(['status' => true, 'code' => 200, 'data' => $payout_data], 200);
                }else{
                    return $this->respond(['status' => false, 'code' => 400, 'data' => $payout_data, "message" => "No data found"], 200);
                }
            }catch (\Throwable $th) {

                $this->myLogger->logme("error", "PayoutController - payoutList: Exception: " . $th->getMessage() . " --- Line: " . $th->getLine() . " --- Trace: " . $th->getTraceAsString());
                $errorData = [
                    'message' => $th->getMessage(),
                    'file'    => $th->getFile(),
                    'line'    => $th->getLine(),
                    'code'    => $th->getCode(),
                    'trace'   => $th->getTraceAsString(),
                    'trace_array' => $th->getTrace(), // full array version (optional)
                    'function' => $th->getTrace()[0]['function'] ?? null,
                    'class' => $th->getTrace()[0]['class'] ?? null,
                ];
                $payout_data = view('payout_list');
                return $this->respond(['status' => false, 'code' => 500, 'data' => $payout_data, "message" => "No data found", 'error_data' => $errorData], 500);
            }
        }

        // for list
        $data['payout_status'] = $this->payout_status;
        // $data['agent_list'] = $this->invoiceModel->agentList(); // because dropdown hided
        $data['pos_list'] = $this->invoiceModel->posList();
        $data['page_name'] = "Invoices";
        $payout_data['payout_list_data'] = $this->invoiceModel->invoiceList();
        $data['payout_list'] = view('payout_list', $payout_data);

        // dd($data);
        return $this->loadLayout('payout_list_handler', $data);
    }

    public function fetchUtrDetails()
    {
        $invoice_id  =  $this->request->getPost('invoice_id') ?? null;
        $payout_data = $this->constructUtrDetails($invoice_id);

        if(!empty($payout_data)){
            return $this->respond(['status' => true, 'code' => 200, 'data' => $payout_data], 200);
        }else{
            return $this->respond(['status' => false, 'code' => 400, 'data' => $payout_data, "message" => "No data found"], 200);
        }
    }

    public function constructUtrDetails($invoice_id)
    {
        $utr_data = $this->invoiceUtrModel->where('is_active', 1)->where('invoice_id', $invoice_id)->findAll();
        $summary_data = $this->invoiceModel->utrSummary($invoice_id);

        if($summary_data['invoice_amount'] == $summary_data['total_utr_amount']) {
            $data['invoice_completed'] = true;
        }

        $data['utr_list_data'] = $utr_data;
        $data['summary'] = $summary_data;
        $data = view('payout_utr_details', $data);

        return $data;
    }

    public function saveUtrDetails()
    {
        $data  =  $this->request->getPost();
        $invoice_id  =  $this->request->getPost('invoice_id') ?? null;
        $utr_id  =  $this->request->getPost('utr_pk') ?? null;

        if(isset($data['utr_date'])){
            $data['utr_date'] = change_date_format($data['utr_date']);
        }


        if(!empty($utr_id)){

            $update = $this->invoiceUtrModel->where('id', $utr_id)->set($data)->update();
            $payout_edit_data = $this->constructUtrDetails($invoice_id);

            if($update){

                $summary_data = $this->invoiceModel->utrSummary($invoice_id);
                if($summary_data['invoice_amount'] == $summary_data['total_utr_amount']){
                    $sql = "UPDATE partner_invoice SET payout_status = 2 WHERE id = ?";
                    db_connect()->query($sql, [(int)$invoice_id]);
                }

                return $this->respond(['status' => true, 'code' => 200, 'data' => $payout_edit_data, "message" => "UTR successfully updated"], 200);
            }else{
                return $this->respond(['status' => false, 'code' => 400, 'data' => $payout_edit_data, "message" => "Failed to update UTR"], 200);
            }

        }else{

            unset($data['utr_pk']);
            $insert_id = $this->invoiceUtrModel->insert($data);
            $payout_data = $this->constructUtrDetails($invoice_id);

            if($insert_id){

                $summary_data = $this->invoiceModel->utrSummary($invoice_id);
                if($summary_data['invoice_amount'] == $summary_data['total_utr_amount']){
                    $sql = "UPDATE partner_invoice SET payout_status = 2 WHERE id = ?";
                    db_connect()->query($sql, [(int)$invoice_id]);
                }

                return $this->respond(['status' => true, 'code' => 200, 'data' => $payout_data, "message" => "UTR added successfully"], 200);
            }else{
                return $this->respond(['status' => false, 'code' => 400, 'data' => $payout_data, "message" => "Failed to add UTR"], 200);
            }
        }
    }

    public function removeUtrDetails()
    {
        $data = $this->request->getPost();

        if(isset($data['utr_id'])){

            $sql = "UPDATE partner_invoice_utr SET is_active = 0 WHERE id = ?";
            $update = db_connect()->query($sql, [$data['utr_id']]);

            $payout_data = $this->constructUtrDetails($data['invoice_id'] ?? "");

            if($update){
                return $this->respond(['status' => true, 'code' => 200, 'data' => $payout_data, "message" => "UTR removed successfully"], 200);
            }else{
                return $this->respond(['status' => false, 'code' => 400, 'data' => $payout_data, "message" => "Failed to remove UTR"], 200);
            }
        }else {
            return $this->respond(['status' => false, 'code' => 500, 'data' => "", "message" => "Failed to remove UTR"], 200);
        }
    }


    /*************************************************************************************************************/
    //... Payout-invoice Mapping Commission's amount and Adjustment's Amount - Data Display
    public function invoices()
    {
        
            $type = $this->request->getGet('type');  
    
            $title = $type === 'add' ? 'Add Payouts' 
                                     : ($type === 'edit' ? 'Edit Payouts' 
                                     : ($type === 'view' ? 'View Payouts' 
                                     : ($type === 'adjustment' ? 'Payouts Adjustment' 
                                     : 'Payouts')));

            $data['tab_name'] = $title;
            $data['page_name'] = $title;

            $id   = $this->request->getGet('id');    
            
            if($type == 'add') 
            {
                $data['agents'] = $this->invoiceModel->agentList(['is_active' => 1]); // common both add and edit
                $data['pos_list'] = $this->invoiceModel->posList(['is_active' => 1]); // common both add and edit
            }
            else
            {
                $data['agents'] = $this->invoiceModel->agentList(); // common both add and edit
                $data['pos_list'] = $this->invoiceModel->posList(); // common both add and edit
            }
            // $data['checked_policy_numbers'] = [];
            // $data['invoice']       = [];
            // $data['extra_payouts'] = [];
            
            //... Now Seperated add => 'policy_transaction_payouts1'
            //... Now Seperated edit and adjustment => 'policy_transaction_payouts' old file
            //... Reason : Due Datatable issues Export button Searching like that so seperated
            if ($type === 'add') { 
                // $invoiceNo = $this->generateInvoiceNumber();
                $data['payouts'] = $this->invoiceModel->payoutList(1);
                // print_rr($data['payouts']);die();
                // print_rr($this->invoiceModel->getLastQuery());die();
                // $data['invoice_number'] = $invoiceNo;
                return $this->loadLayout('invoice_policy_mapping_add', $data);
            }

            if (($type === 'edit' || $type === 'view' || $type === 'adjustment') && !empty($id)) {

                $invoice = $this->invoiceModel->where('id', $id)->first();
                // print_r($invoice);die;
                $data['freeze_edit'] = $this->auditHistory->where('table_name', 'partner_invoice')->where('pk', $id)->countAllResults();
                if($type === 'view'){ $data['freeze_edit'] = 1; }

                // $agentId = $invoice['agent_id'] ?? null;
                $posId = $invoice['pos_id'] ?? null;

                // $data['payouts'] = $this->invoiceModel->payoutList(2 ,$agentId,$id);
                // $data['extra_payouts'] = $agentId ? $this->invoiceModel->payoutList(3, $agentId) : [];
                $data['payouts'] = $this->invoiceModel->payoutList(2 ,$posId,$id);
                // print_r($data['payouts']);die;
                $data['extra_payouts'] = $posId ? $this->invoiceModel->payoutList(3, $posId) : [];

                $invoice_items = $this->invoiceItemModel->where('invoice_id', $id)->findAll();

                if (!$invoice) { return redirect()->to('payout/invoices')->with('error', 'Invoice not found'); }

                $data['invoice']       = $invoice;
                $data['invoice_items'] = $invoice_items;
                // Initialize array for policy numbers
                $data['checked_policy_numbers'] = array_column(array_filter($invoice_items, fn($ii) => isset($ii['is_active']) && $ii['is_active'] == 1),'policy_no');
                
                $data['invoice_number']= $invoice['invoice_no'];
                $data['type'] = $type; 
                $data['payout_status'] = $invoice['payout_status'] ;
                // dd($data);
                return $this->loadLayout('invoice_policy_mapping', $data);

            }

            
    }

    //... Payout-invoice Mapping -  Save/update/soft Delete/Hard Delete Data
    public function saveInvoice()
    {
        $raw_json = $this->request->getJSON(true);

        // 1. Check if the JSON was actually valid/parsed before sanitizing
        if (is_null($raw_json)) {
            return $this->response->setJSON(['error' => 'Invalid JSON','message' => 'Invalid JSON received.'])->setStatusCode(400);
        }

        // 2. Sanitize the data
        $json = sanitizeInputArrayAdvanced($raw_json);

        // 3. Now you can safely use $json (even if it is an empty array)
        $id = $json['invoice_id'] ?? null;
        try {

                        //...  ADD Part
                        if (empty($id)) {
                                $exists = $this->invoiceModel
                                ->where('invoice_no', $json['invoice_no'])
                                ->first();

                                if ($exists) {
                                    $InvNum = $this->generateInvoiceNumber($json['agent_id']);
                                } else {
                                    $InvNum = $json['invoice_no'];
                                }

                            $invoiceData = [
                                'invoice_no'       => $InvNum,
                                'agent_id'         => $json['agent_id'],
                                'invoice_date'     => $json['invoice_date'],
                                'invoice_amount'   => $json['invoice_amount'],
                                'payout_status'    => 1,
                                'broker_id'        => 1
                            ];

                            $invoiceId = $this->invoiceModel->insert($invoiceData);

                            foreach ($json['policies'] as $p) {
                                $this->invoiceItemModel->insert([
                                    'invoice_id'        => $invoiceId,
                                    'policy_id'         => $p['partner_policy_id'],
                                    'policy_no'         => $p['policy_no'],
                                    'commission_amount' => $p['commission_amount'],
                                    'is_active'         => 1
                                ]);
                            }

                            $message = "Invoice created successfully.\nInvoice No: " . $json['invoice_no'];

                        }

                        // ... EDIT part
                        if (!empty($id)) {

                            $invoiceId = $id;

                            $invoiceData = [
                                'invoice_no'     => $json['invoice_no'],
                                // 'agent_id'       => $json['agent_id'] ?? null,
                                'invoice_date'   => $json['invoice_date'],
                                'invoice_amount' => $json['invoice_amount'],
                            ];

                            $this->invoiceModel->update($invoiceId, $invoiceData);

                            //... Fetch existing invoice item rows
                            $existingItems = $this->invoiceItemModel
                                ->where('invoice_id', $invoiceId)
                                ->findAll();

                            //... Create map by policy_no
                            $existingMap = [];
                            foreach ($existingItems as $item) {
                                $existingMap[$item['policy_no']] = $item;
                            }

                            $newPolicyNos = [];

                            //... Loop new JSON policies
                            foreach ($json['policies'] as $p) {

                                $newPolicyNos[] = $p['policy_no'];

                                if (isset($existingMap[$p['policy_no']])) {

                                    //... Update existing item
                                    $this->invoiceItemModel
                                        ->where('id', $existingMap[$p['policy_no']]['id'])
                                        ->set([
                                            'commission_amount' => $p['commission_amount'],
                                            'is_active'         => 1
                                        ])
                                        ->update();

                                } else {

                                    //... Insert new item
                                    $this->invoiceItemModel->insert([
                                        'invoice_id'        => $invoiceId,
                                        'policy_id'         => $p['policy_id'],
                                        'policy_no'         => $p['policy_no'],
                                        'commission_amount' => $p['commission_amount'],
                                        'is_active'         => 1,
                                    ]);
                                }
                            }

                            //... Delete items removed in JSON (hard delete)
                            foreach ($existingItems as $old) {
                                if (!in_array($old['policy_no'], $newPolicyNos)) {
                                    $this->invoiceItemModel
                                        ->where('id', $old['id'])
                                        ->delete();
                                }
                            }
                            //... Delete items removed in JSON (soft delete REF : SVM )
                            // foreach ($existingItems as $old) {
                            //     if (!in_array($old['policy_no'], $newPolicyNos)) {
                            //         $this->invoiceItemModel
                            //             ->where('id', $old['id'])
                            //             ->set(['is_active' => 0])
                            //             ->update();
                            //     }
                            // }

                            $message = "Invoice updated successfully.";

                        }

                         return $this->response->setJSON([
                            'status'     => 'success',
                            'message'    => $message,
                            'invoice_id' => $invoiceId
                        ]);

        } catch (\Exception $e) {

            return $this->response->setJSON([
                    'status'  => 'error',
                    'message' => 'Unexpected error occurred: ' . $e->getMessage()
            ]);
        }
    }


    //... Payout-invoice Mapping - Invoice number is auto-generated only for the Add mode.
    // Note New Pattern : INV/AG001/20251101/xx (REF:SVM)
    public function generateInvoiceNumberAjax($agentId)
    {
        if (!$agentId) {
            return $this->response->setJSON([
                'status'  => 'error',
                'message' => 'Agent ID missing'
            ]);
        }

        $invoiceNo = $this->generateInvoiceNumber($agentId);

        return $this->response->setJSON([
            'status'      => 'success',
            'invoice_no'  => $invoiceNo
        ]);
    }
   
    //... Payout-invoice Mapping - Invoice number is auto-generated only for the Add mode.
    // Note New Pattern : INV/AG001/20251101/xx (REF:SVM)
    private function generateInvoiceNumber($agentId)
    {
        $agent = $this->invoiceModel->agentListById($agentId);
        $agentCode = $agent["agent_code"];

        $today = date("Ymd");
        $likePattern = "NIIB/$agentCode/$today/%";

        $count = $this->invoiceModel
                    ->like("invoice_no", $likePattern)
                    ->countAllResults();

        $nextNumber = $count + 1;

        return "NIIB/$agentCode/$today/$nextNumber";
    }

    // private function generateInvoiceNumber()
    // {
    //     $year  = date('Y');
    //     $month = date('m');

    //     do {
    //         // random 3-digit number
    //         $random = str_pad(rand(1, 999), 3, '0', STR_PAD_LEFT);
    //         $invoiceNo = "INV{$year}{$month}{$random}";

    //         // check main invoice table
    //         $existsMain = $this->invoiceModel
    //                         ->where('invoice_no', $invoiceNo)
    //                         ->first();

    //         // check partner invoice table
    //         $existsPartner = $this->invoiceModel
    //                             ->where('invoice_no', $invoiceNo)
    //                             ->first();

    //     } while ($existsMain || $existsPartner);  // regenerate if duplicate found

    //     return $invoiceNo;
    // }

    //... Payout-invoice Mapping Audit History Based on "Adjustment" value (REF: KV,SVM)
    public function auditHistory()
    {
    

        $iid = $this->request->getGet('id');

        $details['invoice'] = $this->auditHistory
            ->select('auditing_history.*,partner_invoice.invoice_no, user_profiles.first_name as created_name')
            ->join('user_profiles', 'user_profiles.id = auditing_history.created_by', 'left')
            ->join('partner_invoice', 'partner_invoice.id = auditing_history.pk', 'left')
            ->where('auditing_history.table_name', 'partner_invoice') // ok
            ->where('auditing_history.pk', $iid)
            ->orderBy('auditing_history.created_at', 'desc')
            ->get()
            ->getResultArray();

        $details['invoice_child'] = $this->auditHistory
            ->select('auditing_history.*,partner_invoice.invoice_no, user_profiles.first_name as created_name,partner_invoice_items.policy_no')
            ->join('user_profiles', 'user_profiles.id = auditing_history.created_by', 'left')
            ->join('partner_invoice_items', 'partner_invoice_items.id = auditing_history.pk', 'left')
            ->join('partner_invoice', 'partner_invoice.id = partner_invoice_items.invoice_id', 'left')
            ->where('auditing_history.table_name', 'partner_invoice_items') // FIXED
            ->where('partner_invoice.id', $iid)
            ->orderBy('auditing_history.created_at', 'desc')
            ->get()
            ->getResultArray();

        return $this->response->setJSON([
            'status' => 'success',
            'data'   => $details
        ]);

    }

    // ****************************************************************************************************************************************************************

    public function preview($invoiceId = null)
    {   
        $invoiceId = $this->request->getGet('invoice_id');

        // Get invoice data from database
        $invoiceData = $this->getInvoiceData($invoiceId);
        // print_r($invoiceData);die;
        
        if (empty($invoiceData)) {
            return $this->respond([
                'status' => false,
                'code' => 404,
                'data' => '',
                'message' => 'Invoice not found'
            ], 200);
        }
        
        // Load view with data
        $html = view('invoice_template_2', $invoiceData);
        // echo $html; die;
        
        return $this->respond([
            'status' => true,
            'code' => 200,
            'data' => $html
        ], 200);
    }

    public function downloadPdf($invoiceId = null, $type = 0)
    {
        // Get invoice data from database
        $invoiceData = $this->getInvoiceData($invoiceId);
        
        if (empty($invoiceData)) {
            return redirect()->back()->with('error', 'Invoice not found');
        }
        
        // Generate HTML
        $html = view('invoice_template_2', $invoiceData);
        
        // Configure Dompdf
        $options = new Options();
        $options->set('isHtml5ParserEnabled', true);
        $options->set('isPhpEnabled', true);
        $options->set('isRemoteEnabled', true);
        $options->set('defaultFont', 'Arial');
        $options->set('chroot', FCPATH);
        
        // Initialize Dompdf
        $dompdf = new Dompdf($options);
        
        // Load HTML
        $dompdf->loadHtml($html);
        
        // Set paper size and orientation
        $dompdf->setPaper('A4', 'portrait');
        
        // Render PDF
        $dompdf->render();
        
        // Generate filename
        $filename = 'Invoice_' . $invoiceData['invoice_no'] . '_' . date('Ymd') . '.pdf';
        
        if($type == 0){
            // Download PDF
            return $this->response
                ->setHeader('Content-Type', 'application/pdf')
                ->setHeader('Content-Disposition', 'attachment; filename="' . $filename . '"')
                ->setBody($dompdf->output());
        }else{
            // View PDF
            return $this->response
                ->setHeader('Content-Type', 'application/pdf')
                ->setHeader('Content-Disposition', 'inline; filename="' . $filename . '"')
                ->setBody($dompdf->output());
        }


    }
    
    // private function getInvoiceData($invoiceId)
    // {
    //     $invoice_data = $this->invoiceModel
    //             ->select('
    //                 partner_invoice.*, 
    //                 pa.name as agent_name, 
    //                 pa.email as agent_email, 
    //                 pa.mobile as agent_mobile, 
    //                 pa.address as agent_address, 
    //                 pa.agent_code, 
    //                 pa.certificate_file_name, 
    //                 pa.commission_retain
    //             ')
    //             ->join('partner_agent pa', 'partner_invoice.agent_id = pa.id')
    //             ->where('partner_invoice.is_active', 1)
    //             ->where('partner_invoice.id', $invoiceId)
    //             ->first();

    //     return $invoice_data;
    // }

    private function getInvoiceData($invoiceId)
    {
        $invoice_data = $this->invoiceModel
                ->select('

                    partner_invoice.*, 

                    pa.name as agent_name, 
                    pa.email as agent_email, 
                    pa.mobile as agent_mobile, 
                    pa.address as agent_address, 
                    pa.agent_code, 
                    pa.certificate_file_name, 
                    pa.commission_retain,
                    pos.name as pos_name, 
                    pos.email as pos_email, 
                    pos.mobile as pos_mobile, 
                    pos.address as pos_address, 
                    pos.city as pos_city, 
                    pos.pincode as pos_pincode, 
                    pos.state as pos_state, 
                    pos.pos_code, 
                    pos.certificate_file_name as pos_certificate_file_name, 
                    pos.bank_name,pos.account_holder_name,pos.account_number,pos.ifsc_code,
                ')
                ->join('partner_agent pa', 'partner_invoice.agent_id = pa.id','left')
                ->join('partner_pos pos', 'partner_invoice.pos_id = pos.id')
                ->where('partner_invoice.is_active', 1)
                ->where('partner_invoice.id', $invoiceId)
                ->first();

        return $invoice_data;
    }
    
}