<?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;

class AbhiClaimImportService extends BaseTpaClaimImportService
{

    /**
     * MAPPING ARRAYs 
     */

    protected $mapping = [
        ["excel_column" => ["col_name" => "ABHI Claim No", "col_index" => 0], "db_column" => "abhi_claim_no"],
        ["excel_column" => ["col_name" => "New ABHI Claim No With Extension", "col_index" => 1], "db_column" => "new_abhi_claim_no_with_extension"],
        ["excel_column" => ["col_name" => "Unique Count", "col_index" => 2], "db_column" => "unique_count"],
        ["excel_column" => ["col_name" => "Proposer Name", "col_index" => 3], "db_column" => "proposer_name"],
        ["excel_column" => ["col_name" => "Patient Name", "col_index" => 4], "db_column" => "patient_name"],
        ["excel_column" => ["col_name" => "Family ID", "col_index" => 5], "db_column" => "family_id"],
        ["excel_column" => ["col_name" => "Member Code", "col_index" => 6], "db_column" => "member_code"],
        ["excel_column" => ["col_name" => "Patient Age", "col_index" => 7], "db_column" => "patient_age"],
        ["excel_column" => ["col_name" => "Relation", "col_index" => 8], "db_column" => "relation"],
        ["excel_column" => ["col_name" => "Gender", "col_index" => 9], "db_column" => "gender"],
        ["excel_column" => ["col_name" => "Certificate No", "col_index" => 10], "db_column" => "certificate_no"],
        ["excel_column" => ["col_name" => "Master Policy No", "col_index" => 11], "db_column" => "master_policy_no"],
        ["excel_column" => ["col_name" => "Policy Number", "col_index" => 12], "db_column" => "policy_number"],
        ["excel_column" => ["col_name" => "Policy From", "col_index" => 13], "db_column" => "policy_from"],
        ["excel_column" => ["col_name" => "Policy Upto", "col_index" => 14], "db_column" => "policy_upto"],
        ["excel_column" => ["col_name" => "Product Name", "col_index" => 15], "db_column" => "product_name"],
        ["excel_column" => ["col_name" => "Product Name 1", "col_index" => 16], "db_column" => "product_name_1"],
        ["excel_column" => ["col_name" => "Sub - Product", "col_index" => 17], "db_column" => "sub_product"],
        ["excel_column" => ["col_name" => "Policy Category", "col_index" => 18], "db_column" => "policy_category"],
        ["excel_column" => ["col_name" => "Policy Category (Carry Forward till Q3 18-19)+(New Q4 18-19 Onward)", "col_index" => 19], "db_column" => "policy_category_cf_q3_q4"],
        ["excel_column" => ["col_name" => "Sum Insured", "col_index" => 20], "db_column" => "sum_insured"],
        ["excel_column" => ["col_name" => "Bonus", "col_index" => 21], "db_column" => "bonus"],
        ["excel_column" => ["col_name" => "Intimation Date", "col_index" => 22], "db_column" => "intimation_date"],
        ["excel_column" => ["col_name" => "Date Of Doc Rec", "col_index" => 23], "db_column" => "date_of_doc_rec"],
        ["excel_column" => ["col_name" => "Intimation Final Month", "col_index" => 24], "db_column" => "intimation_final_month"],
        ["excel_column" => ["col_name" => "Reported Year", "col_index" => 25], "db_column" => "reported_year"],
        ["excel_column" => ["col_name" => "Reported Qurter", "col_index" => 26], "db_column" => "reported_quarter"],
        ["excel_column" => ["col_name" => "Hospital Name", "col_index" => 27], "db_column" => "hospital_name"],
        ["excel_column" => ["col_name" => "Hospital City", "col_index" => 28], "db_column" => "hospital_city"],
        ["excel_column" => ["col_name" => "Hospital State", "col_index" => 29], "db_column" => "hospital_state"],
        ["excel_column" => ["col_name" => "Diagnosis", "col_index" => 30], "db_column" => "diagnosis"],
        ["excel_column" => ["col_name" => "ICD Chapter", "col_index" => 31], "db_column" => "icd_chapter"],
        ["excel_column" => ["col_name" => "ICD Block", "col_index" => 32], "db_column" => "icd_block"],
        ["excel_column" => ["col_name" => "ICD Level1", "col_index" => 33], "db_column" => "icd_level1"],
        ["excel_column" => ["col_name" => "ICD Level2", "col_index" => 34], "db_column" => "icd_level2"],
        ["excel_column" => ["col_name" => "Procedure Description", "col_index" => 35], "db_column" => "procedure_description"],
        ["excel_column" => ["col_name" => "PCS Description", "col_index" => 36], "db_column" => "pcs_description"],
        ["excel_column" => ["col_name" => "DOA", "col_index" => 37], "db_column" => "doa"],
        ["excel_column" => ["col_name" => "DOD", "col_index" => 38], "db_column" => "dod"],
        ["excel_column" => ["col_name" => "Claim Type", "col_index" => 39], "db_column" => "claim_type"],
        ["excel_column" => ["col_name" => "Claim Category", "col_index" => 40], "db_column" => "claim_category"],
        ["excel_column" => ["col_name" => "Disc Datails", "col_index" => 41], "db_column" => "disc_details"],
        ["excel_column" => ["col_name" => "Disc Date", "col_index" => 42], "db_column" => "disc_date"],
        ["excel_column" => ["col_name" => "Hospital Code", "col_index" => 43], "db_column" => "hospital_code"],
        ["excel_column" => ["col_name" => "Claim Status", "col_index" => 44], "db_column" => "claim_status"],
        ["excel_column" => ["col_name" => "Final ABHI Status-Current Month", "col_index" => 45], "db_column" => "final_abhi_status_current_month"],
        ["excel_column" => ["col_name" => "Claimed Amount", "col_index" => 46], "db_column" => "claimed_amount"],
        ["excel_column" => ["col_name" => "ABHI Amount Less Coins - Current Month", "col_index" => 47], "db_column" => "abhi_amount_less_coins_current_month"],
        ["excel_column" => ["col_name" => "Repudiation Date", "col_index" => 48], "db_column" => "repudiation_date"],
        ["excel_column" => ["col_name" => "Settled Date", "col_index" => 49], "db_column" => "settled_date"],
        ["excel_column" => ["col_name" => "Settled Month", "col_index" => 50], "db_column" => "settled_month"],
        ["excel_column" => ["col_name" => "Settled Year", "col_index" => 51], "db_column" => "settled_year"],
        ["excel_column" => ["col_name" => "Settled Quarter", "col_index" => 52], "db_column" => "settled_quarter"],
        ["excel_column" => ["col_name" => "Rejection Category", "col_index" => 53], "db_column" => "rejection_category"],
        ["excel_column" => ["col_name" => "Rejection Category - Level 1", "col_index" => 54], "db_column" => "rejection_category_level_1"],
        ["excel_column" => ["col_name" => "Rejection Category - Level 2", "col_index" => 55], "db_column" => "rejection_category_level_2"],
        ["excel_column" => ["col_name" => "COVID tagging - Current Month", "col_index" => 56], "db_column" => "covid_tagging_current_month"],
        ["excel_column" => ["col_name" => "EXPECTED DOA", "col_index" => 57], "db_column" => "expected_doa"],
        ["excel_column" => ["col_name" => "EXPECTED DOD", "col_index" => 58], "db_column" => "expected_dod"],
        ["excel_column" => ["col_name" => "AGENT/BROKER CODE", "col_index" => 59], "db_column" => "agent_broker_code"],
        ["excel_column" => ["col_name" => "AGENT/BROKER NAME", "col_index" => 60], "db_column" => "agent_broker_name"],
        ["excel_column" => ["col_name" => "HEALTHCARD_ID", "col_index" => 61], "db_column" => "healthcard_id"],
        ["excel_column" => ["col_name" => "ABHI_NETWORK_NON_NETWORK", "col_index" => 62], "db_column" => "abhi_network_non_network"],
        ["excel_column" => ["col_name" => "CORPORATE_EMPLOYEE_CODE", "col_index" => 63], "db_column" => "corporate_employee_code"],
    ];

    protected $ticketMasterMapping = [

        // Employee / Member details
        'member_code'        => 'emp_code',
        'abhi_claim_no'     => 'claim_number',

        // Dates
        'doa'                => 'doa',
        'dod'                => 'dod',
        'intimation_date'    => 'date_of_intimat',

        // Claim info
        'claim_status'       => 'tpa_claim_status',
        'claimed_amount'     => 'claim_amount',

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

        // Settlement / decision
        'repudiation_date'   => 'denial_date',
        'settled_date'       => 'settled_date',
        'rejection_category' => 'denial_reason',

        // Misc
        'healthcard_id'      => 'tpa_no',
        'claim_type'         => 'tpa_claim_type',

    ];

    protected $statusMapping = [
        'Settled' => 11,
        'Rejected' => 8,
        'Cancelled' => 13,
        'Approved' => 9,
        'Closed' => 12,
        'Query' => 4,
        'Required Information' => 4,
        'In-Progress' => 5,
        'Paid' => 11,
        'Denied' => 8,
        'Cancelled' => 13,
        'Processed' => 61,
        'Information Awaited' => 4,
        'Denied Letter Sent' => 66,
        'Cashless Document Awaited' => 3,
        'RI Cancelled' => 13,
    ];

    protected $dateColumns = [
        'policy_from',
        'policy_upto',

        'intimation_date',
        'date_of_doc_rec',

        'doa',
        'dod',

        'repudiation_date',
        'settled_date',

        'expected_doa',
        'expected_dod',
    ];


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

        $builder = $this->db->table('claims_dump_abhi');
        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_abhi 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 $this->db->table('claims_dump_abhi')->updateBatch($updateData, 'id') !== false;
    }


    public function updateTicketMasterRejectedReasonInTPATable($data): bool
    {
        if (empty($data)) {
            return false;
        }

        $builder = $this->db->table('claims_dump_abhi');
        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 === null ? null : trim((string) $value);
            }

            foreach ($this->dateColumns as $key => $value) {
                $item[$value] = change_date_format($item[$value] ?? null, 'm/d/Y h:i:s A', '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_abhi', ['file_id' => $file_id]);

        if (empty($tpaClaimDumpData)) {
            return $this->emptyClaimMasterMappingResponse('claims_dump_abhi', (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'] ?? '') ?? null,
                    'emp_code' => $row['member_code'] ?? null,
                    'claim_amount' => $row['claimed_amount'] ?? null,
                    'tpa_no' => $row['healthcard_id'] ?? null,
                    'client_id' => $file_data['client_id'] ?? null,
                    'client_policy_id' => $file_data['client_policy_id'] ?? null,
                ];

                $newStatusId = $this->resolveClaimStatusId(
                    $this->statusMapping,
                    $row['claim_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['member_code'], $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['claim_dump_ref_id']    = $row['id'];
                $item['claim_dump_date'] = $file_data['claim_dump_date'] ?? null;
                $item['created_by'] = $file_data['created_by'] ?? null;
                $item['claim_description'] = $row['diagnosis'] ?? null;
                $item['tpa_ailments'] = $row['diagnosis'] ?? null;
                $claimTypeRaw = strtolower(trim((string) ($row['claim_type'] ?? '')));
                $item['claim_type'] = (str_contains($claimTypeRaw, 'pre') || str_contains($claimTypeRaw, 'post')) ? 3 : 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 isDateValue($value): bool
    {
        if (empty($value)) {
            return false;
        }

        // Excel numeric date
        if (is_numeric($value) && $value > 30000) {
            return true;
        }

        return strtotime(str_replace('/', '-', $value)) !== false;
    }

    public function normalizeDate($value): ?string
    {
        try {
            if (empty($value)) {
                return null;
            }

            // Excel numeric date
            if (is_numeric($value)) {
                return date(
                    'Y-m-d',
                    \PhpOffice\PhpSpreadsheet\Shared\Date::excelToTimestamp($value)
                );
            }

            $value = trim((string) $value);

            // Replace / with - for strtotime compatibility
            $value = str_replace('/', '-', $value);

            $timestamp = strtotime($value);

            if ($timestamp === false) {
                return null;
            }

            return date('Y-m-d', $timestamp);

        } catch (\Throwable $e) {
            return null;
        }
    }

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

        // trim removes whitespace, strtolower handles case sensitivity
        $relation = strtolower(trim($relation));

        // Mapping specific keywords to standardized outputs
        // ORDER MATTERS: Specific phrases (in-law) must come before general ones (father)
        $map = [
            'father-in-law' => ['father in law', 'father-in-law', 'fil'],
            'mother-in-law' => ['mother in law', 'mother-in-law', 'mil'],
            'father'        => ['father', 'papa', 'dad'],
            'mother'        => ['mother', 'mom', 'mummy'],
            'spouse'        => ['spouse', 'wife', 'husband', 'hubby'],
            'daughter'      => ['daughter', 'daug'],
            'son'           => ['son'],
            'self'          => ['self', 'employee', 'main'],
        ];

        foreach ($map as $standard => $keywords) {
            foreach ($keywords as $keyword) {
                if (str_contains($relation, $keyword)) {
                    return $standard;
                }
            }
        }

        return null; 
    }

}