<?php

namespace App\Controllers;

use App\Libraries\DigitMotor\DigitApiException;
use App\Libraries\DigitMotor\DigitExecutorService;
use App\Models\MotorQuoteModel;
use CodeIgniter\API\ResponseTrait;

class DigitMotorController extends BaseController
{
    use ResponseTrait;

    protected MotorQuoteModel $quoteModel;
    protected DigitExecutorService $executor;

    public function __construct()
    {
        set_session_context('Digit Motor Controller');
        $this->quoteModel = new MotorQuoteModel();
        $this->executor   = new DigitExecutorService();
    }

    // ===================== LIST =====================

    public function list()
    {
        if (strtolower($this->request->getMethod()) === 'post') {
            $filters = [
                'status'         => $this->request->getPost('status'),
                'enquiry_id'     => $this->request->getPost('enquiry_id'),
                'quote_number'   => $this->request->getPost('quote_number'),
                'license_plate'  => $this->request->getPost('license_plate'),
            ];
            $data['quotes'] = $this->quoteModel->getListWithVehicle($filters);
            return view('digit_motor/list_table', $data);
        }

        $data['quotes']  = $this->quoteModel->getListWithVehicle();
        $data['statuses'] = [
            'DRAFT' => 'Draft',
            'QUOTED' => 'Quoted',
            'CREATED' => 'Created',
            'KYC_DONE' => 'KYC Done',
            'PAID' => 'Paid',
            'EFFECTIVE' => 'Effective',
            'FAILED' => 'Failed',
        ];
        $data['title'] = 'Digit Motor Quotes';
        return $this->loadLayout('digit_motor/list', $data);
    }

    // ===================== JOURNEY UI =====================

    public function journey($quoteId = null)
    {
        $data['title'] = 'Digit Motor Journey';
        $data['quote'] = null;
        $data['quote_id'] = null;

        if ($quoteId) {
            $data['quote'] = $this->quoteModel->getDetail((int) $quoteId);
            $data['quote_id'] = (int) $quoteId;
            if (!$data['quote']) {
                return redirect()->to(base_url('digit-motor/list'))->with('error', 'Quote not found.');
            }
        }

        return $this->loadLayout('digit_motor/journey', $data);
    }

    public function detail($quoteId)
    {
        $detail = $this->quoteModel->getDetail((int) $quoteId);
        if (!$detail) {
            return $this->respond(['status' => false, 'message' => 'Quote not found.'], 404);
        }
        return $this->respond(['status' => true, 'data' => $detail]);
    }

    // ===================== API ACTIONS =====================

    public function quickQuote()
    {
        return $this->runAction(function () {
            $input = $this->request->getJSON(true) ?: $this->request->getPost();
            $rules = [
                'license_plate_number' => 'required|min_length[4]',
                'vehicle_maincode'     => 'required',
                'registration_date'    => 'required',
                'manufacture_date'     => 'required',
                'pincode'              => 'required|exact_length[6]',
            ];
            if (!$this->validateDigitInput($input, $rules)) {
                return $this->respond([
                    'status'  => false,
                    'message' => 'Validation failed.',
                    'errors'  => $this->validator->getErrors(),
                ], 422);
            }

            $result = $this->executor->quickQuote($input);
            return $this->respond([
                'status'  => true,
                'message' => 'Quick quote generated.',
                'data'    => $result,
            ]);
        });
    }

    public function createQuote($quoteId = null)
    {
        return $this->runAction(function () use ($quoteId) {
            $input = $this->request->getJSON(true) ?: $this->request->getPost();
            $quoteId = (int) ($quoteId ?: ($input['quote_id'] ?? 0));
            if ($quoteId <= 0) {
                return $this->respond(['status' => false, 'message' => 'quote_id is required.'], 422);
            }

            $result = $this->executor->createQuote($quoteId, $input);
            return $this->respond([
                'status'  => true,
                'message' => 'Quote created.',
                'data'    => $result,
            ]);
        });
    }

    public function kycStatus($quoteId)
    {
        return $this->runAction(function () use ($quoteId) {
            $result = $this->executor->kycStatus((int) $quoteId);
            return $this->respond([
                'status'  => true,
                'message' => 'KYC status fetched.',
                'data'    => $result,
            ]);
        });
    }

    public function paymentLink($quoteId)
    {
        return $this->runAction(function () use ($quoteId) {
            $input = $this->request->getJSON(true) ?: $this->request->getPost();
            $result = $this->executor->paymentLink((int) $quoteId, $input ?: []);
            return $this->respond([
                'status'  => true,
                'message' => 'Payment link generated.',
                'data'    => $result,
            ]);
        });
    }

    public function policyStatus($quoteId)
    {
        return $this->runAction(function () use ($quoteId) {
            $result = $this->executor->policyStatus((int) $quoteId);
            return $this->respond([
                'status'  => true,
                'message' => 'Policy status fetched.',
                'data'    => $result,
            ]);
        });
    }

    public function policyPdf($quoteId)
    {
        return $this->runAction(function () use ($quoteId) {
            $result = $this->executor->policyPdf((int) $quoteId);
            return $this->respond([
                'status'  => true,
                'message' => 'Policy PDF fetched.',
                'data'    => $result,
            ]);
        });
    }

    public function paymentCallback($outcome, $quoteId)
    {
        $quoteId = (int) $quoteId;
        if ($outcome === 'success' && $quoteId > 0) {
            try {
                $this->executor->policyStatus($quoteId);
            } catch (\Throwable $e) {
                log_message('error', 'DigitMotor payment callback policyStatus: ' . $e->getMessage());
            }
        }

        return redirect()->to(base_url('digit-motor/journey/' . $quoteId))
            ->with($outcome === 'success' ? 'success' : 'error', $outcome === 'success'
                ? 'Payment return received. Refreshing policy status.'
                : 'Payment was cancelled or failed.');
    }

    protected function runAction(callable $fn)
    {
        try {
            return $fn();
        } catch (DigitApiException $e) {
            log_message('error', 'DigitMotor API error: ' . $e->getMessage() . ' code=' . $e->getDigitCode());
            $http = $e->getHttpStatus() >= 400 ? $e->getHttpStatus() : 502;
            if ($e->isInfraError()) {
                $http = 502;
            }
            return $this->respond([
                'status'     => false,
                'message'    => $e->getMessage(),
                'digit_code' => $e->getDigitCode(),
                'infra'      => $e->isInfraError(),
            ], min($http, 599));
        } catch (\Throwable $e) {
            log_message('error', 'DigitMotor unexpected error: ' . $e->getMessage());
            return $this->respond([
                'status'  => false,
                'message' => 'Something went wrong. Please try again.',
            ], 500);
        }
    }

    protected function validateDigitInput(array $data, array $rules): bool
    {
        $this->validator = \Config\Services::validation();
        $this->validator->setRules($rules);
        return $this->validator->run($data);
    }
}