<?php

namespace App\Libraries;

use App\Models\JobModel;

class JobStatusService
{
    protected JobModel $jobModel;

    public function __construct(?JobModel $jobModel = null)
    {
        $this->jobModel = $jobModel ?? new JobModel();
    }

    public function getJobStatusByName(string $jobName): array
    {
        $jobName = trim($jobName);

        if ($jobName === '') {
            return $this->buildResponse(false, $jobName, 'Job name is required.');
        }

        try {
            $job = $this->jobModel
                ->where('name', $jobName)
                ->orderBy('id', 'DESC')
                ->first();

            if (!$job) {
                return $this->buildResponse(false, $jobName, 'No job record found for given name.');
            }

            return $this->formatJobResponse($job, 'Job status fetched successfully.');
        } catch (\Throwable $e) {
            log_message('error', 'JobStatusService failed for job "{job}": {message}', [
                'job' => $jobName,
                'message' => $e->getMessage(),
            ]);

            return $this->buildResponse(false, $jobName, 'Unable to fetch job status right now.');
        }
    }

    public function getJobStatusById(int $jobId): array
    {
        if ($jobId <= 0) {
            return $this->buildResponse(false, '', 'Valid job id is required.');
        }

        try {
            $job = $this->jobModel
                ->where('id', $jobId)
                ->first();

            if (!$job) {
                return $this->buildResponse(false, '', 'No job record found for given id.');
            }

            return $this->formatJobResponse($job, 'Job status fetched successfully.');
        } catch (\Throwable $e) {
            log_message('error', 'JobStatusService failed for job id "{id}": {message}', [
                'id' => $jobId,
                'message' => $e->getMessage(),
            ]);

            return $this->buildResponse(false, '', 'Unable to fetch job status right now.');
        }
    }

    public function getJobStatusByUuid(string $uuid): array
    {
        $uuid = trim($uuid);

        if ($uuid === '') {
            return $this->buildResponse(false, '', 'Job uuid is required.');
        }

        try {
            $job = $this->jobModel
                ->where('uuid', $uuid)
                ->first();

            if (!$job) {
                return $this->buildResponse(false, '', 'No job record found for given uuid.');
            }

            return $this->formatJobResponse($job, 'Job status fetched successfully.');
        } catch (\Throwable $e) {
            log_message('error', 'JobStatusService failed for job uuid "{uuid}": {message}', [
                'uuid' => $uuid,
                'message' => $e->getMessage(),
            ]);

            return $this->buildResponse(false, '', 'Unable to fetch job status right now.');
        }
    }

    protected function formatJobResponse(array $job, string $message): array
    {
        return [
            'success'  => true,
            'job_name' => $job['name'] ?? '',
            'status'   => $job['status'] ?? null,
            'response' => $this->normalizeResponse($job['response'] ?? null),
            'job_id'   => isset($job['id']) ? (int) $job['id'] : null,
            'uuid'     => $job['uuid'] ?? null,
            'run_time' => $this->normalizeRunTime($job['run_time'] ?? null),
            'message'  => $message,
        ];
    }

    protected function normalizeResponse($rawResponse)
    {   
        // dd($rawResponse);
        if ($rawResponse === null) {
            return null;
        }

        if (is_string($rawResponse)) {
            $trimmed = trim($rawResponse);
            if ($trimmed === '') {
                return null;
            }

            $decoded = json_decode($trimmed, true);
            if (json_last_error() === JSON_ERROR_NONE) {
                return $decoded;
            }

            return $rawResponse;
        }

        return $rawResponse;
    }

    protected function normalizeRunTime($runTime)
    {
        if ($runTime === null || $runTime === '') {
            return null;
        }

        return is_numeric($runTime) ? (float) $runTime : null;
    }

    protected function buildResponse(bool $success, string $jobName, string $message): array
    {
        return [
            'success'  => $success,
            'job_name' => $jobName,
            'status'   => null,
            'response' => null,
            'job_id'   => null,
            'uuid'     => null,
            'run_time' => null,
            'message'  => $message,
        ];
    }
}