<?php

namespace App\Libraries\TPAClaimsImportServices;

use App\Models\TicketMasterModel;
use App\Models\ClientPolicyModel;
use App\Models\ClientRMModel;
use App\Models\EmployeeModel;
use App\Models\ClaimDumpFileModel;
use App\Models\ClaimsDumpFhplModel;

class RcareClaimImportService extends BaseTpaClaimImportService
{   

    /**
     * MAPPING ARRAYs 
     */

    protected $mapping = [
        ["excel_column" => ["col_name" => "CLInwardNo", "col_index" => 0], "db_column" => "cl_inward_no"],
        ["excel_column" => ["col_name" => "Inward Date", "col_index" => 1], "db_column" => "inward_date"],
        ["excel_column" => ["col_name" => "Claim Classification", "col_index" => 2], "db_column" => "claim_classification"],
        ["excel_column" => ["col_name" => "Policy Name", "col_index" => 3], "db_column" => "policy_name"],
        ["excel_column" => ["col_name" => "Policy Number", "col_index" => 4], "db_column" => "policy_number"],
        ["excel_column" => ["col_name" => "Policy Start Date", "col_index" => 5], "db_column" => "policy_start_date"],
        ["excel_column" => ["col_name" => "Policy End Date", "col_index" => 6], "db_column" => "policy_end_date"],
        ["excel_column" => ["col_name" => "UHID", "col_index" => 7], "db_column" => "uhid"],
        ["excel_column" => ["col_name" => "Insured Name", "col_index" => 8], "db_column" => "insured_name"],
        ["excel_column" => ["col_name" => "Patient Name", "col_index" => 9], "db_column" => "patient_name"],
        ["excel_column" => ["col_name" => "Employee/Member Id", "col_index" => 10], "db_column" => "employee_member_id"],
        ["excel_column" => ["col_name" => "Grade", "col_index" => 11], "db_column" => "grade"],
        ["excel_column" => ["col_name" => "Relation", "col_index" => 12], "db_column" => "relation"],
        ["excel_column" => ["col_name" => "Age", "col_index" => 13], "db_column" => "age"],
        ["excel_column" => ["col_name" => "Gender", "col_index" => 14], "db_column" => "gender"],
        ["excel_column" => ["col_name" => "DF/DNF idenitifcation", "col_index" => 15], "db_column" => "df_dnf_identification"],
        ["excel_column" => ["col_name" => "Sum Insured", "col_index" => 16], "db_column" => "sum_insured"],
        ["excel_column" => ["col_name" => "DOA/OPD Treatment From", "col_index" => 17], "db_column" => "doa_opd_treatment_from"],
        ["excel_column" => ["col_name" => "DOD/OPD Treatment To", "col_index" => 18], "db_column" => "dod_opd_treatment_to"],
        ["excel_column" => ["col_name" => "Hospital Name", "col_index" => 19], "db_column" => "hospital_name"],
        ["excel_column" => ["col_name" => "Hospital District", "col_index" => 20], "db_column" => "hospital_district"],
        ["excel_column" => ["col_name" => "Hospital State", "col_index" => 21], "db_column" => "hospital_state"],
        ["excel_column" => ["col_name" => "ICDCode", "col_index" => 22], "db_column" => "icd_code"],
        ["excel_column" => ["col_name" => "Disease Category", "col_index" => 23], "db_column" => "disease_category"],
        ["excel_column" => ["col_name" => "Final Status", "col_index" => 24], "db_column" => "final_status"],
        ["excel_column" => ["col_name" => "Approved Date", "col_index" => 25], "db_column" => "approved_date"],
        ["excel_column" => ["col_name" => "Claimed Amount", "col_index" => 26], "db_column" => "claimed_amount"],
        ["excel_column" => ["col_name" => "Disallowed Amount", "col_index" => 27], "db_column" => "disallowed_amount"],
        ["excel_column" => ["col_name" => "Net Sanct Amt", "col_index" => 28], "db_column" => "net_sanction_amount"],
        ["excel_column" => ["col_name" => "Reason For Disallowance", "col_index" => 29], "db_column" => "reason_for_disallowance"],
        ["excel_column" => ["col_name" => "External Query Remarks", "col_index" => 30], "db_column" => "external_query_remarks"],
        ["excel_column" => ["col_name" => "Rejection Remarks", "col_index" => 31], "db_column" => "rejection_remarks"],
        ["excel_column" => ["col_name" => "Cheque/NEFT Number", "col_index" => 32], "db_column" => "cheque_neft_number"],
        ["excel_column" => ["col_name" => "Cheque/NEFT Date", "col_index" => 33], "db_column" => "cheque_neft_date"],
        ["excel_column" => ["col_name" => "Diagnosis", "col_index" => 34], "db_column" => "diagnosis"],
        ["excel_column" => ["col_name" => "Treatment Detail", "col_index" => 35], "db_column" => "treatment_detail"],
        ["excel_column" => ["col_name" => "Member Reimbursement CL Type", "col_index" => 36], "db_column" => "member_reimbursement_cl_type"],
    ];

    protected $ticketMasterMapping = [

        // Employee / Member
        'employee_member_id'   => 'emp_code',

        // Policy
        'policy_start_date'    => 'date_of_incep',

        // Claim Dates
        'doa_opd_treatment_from' => 'doa',
        'dod_opd_treatment_to'   => 'dod',
        'approved_date'          => 'approved_date',

        // Claim Amounts
        'claimed_amount'        => 'claim_amount',
        'net_sanction_amount'   => 'approved_amount',

        // Status / Remarks
        'final_status'          => 'tpa_claim_status',
        'reason_for_disallowance' => 'denial_reason',
        'rejection_remarks'     => 'return_remark',

        // Hospital
        'hospital_name'         => 'hospital_name',
        'hospital_state'        => 'hospital_state',
        'hospital_district'     => 'hospital_city',

        // Payment
        'cheque_neft_number'    => 'utr_details',
        'cheque_neft_date'      => 'settled_date',

        // References
        'cl_inward_no'          => 'claim_number',
        'uhid'                  => 'tpa_no',
    ];

    /**
     * Extra dump → claim_report fields beyond ticketMasterMapping.
    protected $statusMapping = [
        'CL Paid with Settlement Letter' => 11,
        'Settled' => 11,
        'Paid' => 11,
        'Rejected' => 8,
        'Approved' => 9,
        'Closed' => 12,
        'CL Rejected' => 8,
        'CL Approved' => 9,
        'AL Closed' => 12,
    ];

    protected $dateColumns = [
        'inward_date',
        'policy_start_date',
        'policy_end_date',
        'doa_opd_treatment_from',
        'dod_opd_treatment_to',
        'approved_date',
        'cheque_neft_date'
    ];


    /**
     * ABSTRACT FUNCTIONs 
     */
    public function bulkInsertTPATable(array $data): bool
    {
        if (empty($data)) {
            return false;
        }

        $builder = $this->db->table('claims_dump_reliance');
        return $builder->insertBatch($data);

    }


    public function importClaimMaster(array $data): bool
    {
        if (empty($data)) {
            return false;
        }
        
        $ticketMasterModel = new TicketMasterModel();
        return $ticketMasterModel->insertBatch($data);
    }


    public function updateTicketIdInTPATable(int $fileId): bool
    {
        $rows = $this->db->table('claims_dump_reliance cd')
            ->select('cd.id, tm.id AS ticket_id')
            ->join('ticket_master tm', 'tm.claim_dump_ref_id = cd.id AND tm.file_id = cd.file_id', 'inner')
            ->where('cd.is_active', 1)
            ->where('cd.file_id', $fileId)
            ->where('cd.ticket_id IS NULL')
            ->get()
            ->getResultArray();

        if (empty($rows)) {
            return true;
        }

        $updateData = [];
        foreach ($rows as $row) {
            $updateData[] = [
                'id'        => $row['id'],
                'ticket_id' => $row['ticket_id'],
            ];
        }

        return $this->db->table('claims_dump_reliance')->updateBatch($updateData, 'id') !== false;
    }


    public function updateTicketMasterRejectedReasonInTPATable($data): bool
    {   
        if (empty($data)) {
            return false;
        }
        
        $builder = $this->db->table('claims_dump_reliance');
        return $builder->updateBatch($data, 'id') !== false;
    }


    /**
     * MAPPING FUNCTIONs 
     */

    public function mapTPAData(array $rows, $file_id): array
    {   
        $ClientPolicyModel = new ClaimDumpFileModel();
        $file_data = $ClientPolicyModel->where('id', $file_id)->first();

        $mapped = [];
        foreach ($rows as $row) {

            $item = [];

            foreach ($this->mapping as $map) {
                $excelColumn = $map['excel_column']['col_name'];
                $dbColumn    = $map['db_column'];

                $value = $row[$excelColumn] ?? null;
                $item[$dbColumn] = $value;
            }

            foreach ($this->dateColumns as $key => $value) {
                $item[$value] = change_date_format($item[$value] ?? null, 'd-M-y', 'Y-m-d');
            }

            $item['file_id'] = $file_id ?? null;
            $item['client_id'] = $file_data['client_id'] ?? null;
            $item['client_policy_id'] = $file_data['client_policy_id'] ?? null;
            $item['created_by'] = $file_data['created_by'] ?? null;

            $mapped[] = $item;
        }

        return $mapped;
    }

    public function mapClaimMasterData($file_id): array
    {

        $ClientPolicyModel = new ClaimDumpFileModel();
        $file_data = $ClientPolicyModel->where('id', $file_id)->first();

        $tpaClaimDumpData = $this->getTpaClaimDumpData('claims_dump_reliance', ['file_id' => $file_id]);

        if (empty($tpaClaimDumpData)) {
            return $this->emptyClaimMasterMappingResponse('claims_dump_reliance', (int) $file_id);
        }


        $ClientPolicyModel = new ClientPolicyModel();
        $client_policy_data = $ClientPolicyModel
            ->select("
                client_policy.*,
                (
                    SELECT id
                    FROM client_rm
                    WHERE is_active = 1
                    AND level = 3
                    AND client_id = client_policy.client_id
                    ORDER BY id ASC
                    LIMIT 1
                ) AS acm_id
            ")
            ->where('client_policy.id', $file_data['client_policy_id'])
            ->where('client_policy.is_active', 1)
            ->first();

        try {

            $mapped = [];
            $rejecetd_reason = [];
            $status_update_array = [];

            foreach ($tpaClaimDumpData as $row) {

                $params = [
                    'doa' => change_date_format($row['doa_opd_treatment_from'] ?? '') ?? null,
                    'emp_code' => $row['employee_member_id'] ?? null,
                    'claim_amount' => $row['claimed_amount'] ?? null,
                    'tpa_no' => $row['uhid'] ?? null,
                    'client_id' => $file_data['client_id'] ?? null,
                    'client_policy_id' => $file_data['client_policy_id'] ?? null,
                ];

                $newStatusId = $this->resolveClaimStatusId(
                    $this->statusMapping,
                    $row['final_status'] ?? '',
                    (int) $row['id'],
                    $rejecetd_reason
                );
                if ($newStatusId === null) {
                    continue;
                }
                $existingTicket = $this->getExistingTicketMasterClaim($params);

                if ($this->handleExistingTicketStatusUpdate(
                    $existingTicket,
                    $newStatusId,
                    (int) $row['id'],
                    $status_update_array,
                    $rejecetd_reason
                )) {
                    continue;
                }

                $item = [];

                $item['client_id']    = $client_policy_data['client_id'] ?? null;
                $item['client_policy_id'] = $client_policy_data['id'] ?? null;
                $item['insurer_id']  = $client_policy_data['insurer_id'] ?? null;
                $item['tpa_id']  = $client_policy_data['tpa_id'] ?? null;
                $item['acm_id']  = $client_policy_data['acm_id'] ?? null;
                $item['policy_no']  = $client_policy_data['policy_no'] ?? null;
                $item['relationship']  = $this->convertRelation($row['relation'] ?? null);

                $employee_data = $this->getEmployeeDetails($file_data['client_id'], $file_data['client_policy_id'], $row['employee_member_id'], $item['relationship']);

                if (!empty($employee_data)) {
                    $item['emp_id']    = $employee_data['id'] ?? null;
                    $item['emp_name'] = $employee_data['name'] ?? null;
                    $item['emp_code'] = $employee_data['emp_code'] ?? null;
                    $item['emp_mail']  = $employee_data['emp_mail'] ?? null;
                    $item['emp_mobile']  = $employee_data['emp_mobile'] ?? null;
                    if (!empty($employee_data['insured_emp_id'])) {
                        $item['insured_emp_id']  = $employee_data['insured_emp_id'] ?? null;
                        $item['insured_name']  = $employee_data['insured_name'] ?? null;
                    }else{
                        $reason = 'This Dependent employee not exist in our system.';
                        $rejecetd_reason[] = ["id" => $row['id'], "master_reject_reason" => $reason];
                        continue;
                    }                
                } else {

                    $reason = 'This employee not exist in our system.';
                    $rejecetd_reason[] = ["id" => $row['id'], "master_reject_reason" => $reason];
                    continue;
                }

                foreach ($this->ticketMasterMapping as $tpaKey => $ticketMasterKey) {
                    $item[$ticketMasterKey] = array_key_exists($tpaKey, $row) ? $row[$tpaKey] : null;
                }

                // Meta fields
                $item['claim_status_id'] = $newStatusId;
                $item['file_id']    = $file_id;
                $item['created_by'] = $file_data['created_by'] ?? null;
                $item['claim_dump_ref_id']    = $row['id'];
                $item['claim_dump_date'] = $file_data['claim_dump_date'] ?? null;
                $item['claim_description'] = $row['diagnosis'] ?? null;
                $item['tpa_ailments'] = $row['diagnosis'] ?? null;
                $item['claim_type'] = 1;
                $item['priority']           = 1;
                $item['mode_of_intimation'] = 5;
                $item['ticket_type_id']     = 1;
                $item['claim_created_by']   = 'DUMP_TPA';

                $mapped[] = $item;
            }

            return [
                'status' => true,
                'mapped_array' => $mapped,
                'rejected_reason_array' => $rejecetd_reason,
                'status_update_array' => $status_update_array,
            ];
            
        } catch (\Throwable $th) {

            $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,
            ];

            return ['status' => false, "message" => $errorData['message'], 'error_data' => $errorData];
        }
    }


    /**
     * HELPER FUNCTIONs 
     */

    public function convertRelation(?string $relation): ?string
    {
        if (empty($relation)) {
            return null;
        }

        $relation = strtolower($relation);

        if (str_contains($relation, 'self')) {
            return 'self';
        }

        if (str_contains($relation, 'spouse') || str_contains($relation, 'wife') || str_contains($relation, 'husband')) {
            return 'spouse';
        }

        if (str_contains($relation, 'daughter')) {
            return 'daughter';
        }

        if (str_contains($relation, 'son')) {
            return 'son';
        }

        if (str_contains($relation, 'father in law') || str_contains($relation, 'father-in-law')) {
            return 'father-in-law';
        }

        if (str_contains($relation, 'mother in law') || str_contains($relation, 'mother-in-law')) {
            return 'mother-in-law';
        }

        if (str_contains($relation, 'father')) {
            return 'father';
        }

        if (str_contains($relation, 'mother')) {
            return 'mother';
        }

        return null; // unmatched case
    }


}