<?php

namespace App\Controllers\Specimen;

use App\Traits\PatchValidationTrait;
use App\Traits\ResponseTrait;
use App\Controllers\BaseController;
use App\Libraries\ValueSet;
use App\Models\Specimen\SpecimenModel;

class SpecimenController extends BaseController {
    use ResponseTrait;
    use PatchValidationTrait;

    protected $db;
    protected $model;
    protected $rules;

    public function __construct() {
        $this->db = \Config\Database::connect();
        $this->model = new SpecimenModel();
        $this->rules = [];
    }

    public function index() {
        try {
            $rows = $this->model->findAll();

            $rows = ValueSet::transformLabels($rows, [
                'SpecimenType' => 'specimen_type',
                'SpecimenStatus' => 'specimen_status',
                'BodySite' => 'body_site',
            ]);

            return $this->respond([ 'status' => 'success', 'message'=> "data fetched successfully", 'data'   => $rows ], 200);
        } catch (\Exception $e) {
            return $this->failServerError('Exception : '.$e->getMessage());
        }
    }

    public function show($id) {
        try {
            $row = $this->model->where('SID',$id)->first();
            if (empty($row)) {
                return $this->respond([ 'status' => 'success', 'message'=> "data not found", 'data' => null ], 200);
            }

            $row = ValueSet::transformLabels([$row], [
                'SpecimenType' => 'specimen_type',
                'SpecimenStatus' => 'specimen_status',
                'BodySite' => 'body_site',
            ])[0];

            return $this->respond([ 'status' => 'success', 'message'=> "data fetched successfully", 'data'   => $row ], 200);
        } catch (\Exception $e) {
            return $this->failServerError('Exception : '.$e->getMessage());
        }
    }

    public function create() {
        $input = $this->request->getJSON(true);
        if (!$this->validateData($input, $this->rules)) { return $this->failValidationErrors($this->validator->getErrors()); }
        try {
            $id = $this->model->insert($input);
            return $this->respondCreated([ 'status'  => 'success', 'message' => "data $id created successfully" ]);
        } catch (\Exception $e) {
            return $this->failServerError('Something went wrong: ' . $e->getMessage());
        }
    }

    public function update($SID = null) {
        $input = $this->requirePatchPayload($this->request->getJSON(true));
        if ($input === null) {
            return;
        }

        $id = $this->requirePatchId($SID, 'SID');
        if ($id === null) {
            return;
        }

        $existing = $this->model->where('SID', $id)->first();
        if (!$existing) {
            return $this->respond([ 'status' => 'failed', 'message' => 'Specimen not found', 'data' => [] ], 404);
        }

        $input['SID'] = $id;
        if (!$this->validateData($input, $this->rules)) { return $this->failValidationErrors($this->validator->getErrors()); }
        try {
            $this->model->update($id, $input);
            return $this->respond([ 'status'  => 'success', 'message' => 'data updated successfully', 'data' => $id ], 200);
        } catch (\Exception $e) {
            return $this->failServerError('Something went wrong: ' . $e->getMessage());
        }
    }

    /**
     * Delete a specimen (soft delete)
     * DELETE /api/specimen/(:num)
     */
    public function delete($id) {
        try {
            // Check if specimen exists
            $specimen = $this->model->where('SID', $id)->first();
            
            if (empty($specimen)) {
                return $this->respond([
                    'status' => 'failed',
                    'message' => 'Specimen not found',
                    'data' => null
                ], 404);
            }
            
            // Perform soft delete (set DelDate)
            $deleted = $this->model->update($id, [
                'DelDate' => date('Y-m-d H:i:s')
            ]);
            
            if (!$deleted) {
                return $this->respond([
                    'status' => 'failed',
                    'message' => 'Failed to delete specimen',
                    'data' => null
                ], 500);
            }
            
            return $this->respond([
                'status' => 'success',
                'message' => 'Specimen deleted successfully',
                'data' => ['SID' => $id]
            ], 200);
            
        } catch (\Exception $e) {
            log_message('error', 'SpecimenController::delete error: ' . $e->getMessage());
            return $this->respond([
                'status' => 'failed',
                'message' => 'Failed to delete specimen',
                'data' => null
            ], 500);
        }
    }

}
