<?php

namespace api\modules\v1\controllers;

use api\components\Controller;
use yii\web\NotFoundHttpException;
use Yii;
use common\models\HisRequest;
use api\models\search\HisRequestSearch;
use common\models\HisObr;
use common\models\HisObx;
use OpenApi\Attributes as OA;

#[OA\Tag(name: "HisRequest", description: "Hospital import endpoints")]
class HisRequestController extends Controller
{
  /*
  #[OA\Get(
    path: "/his-request",
    summary: "Get list hospital import",
    operationId: "hisRequestIndex",
    tags: ["HisRequest"],
    responses: [
      new OA\Response(
        response: 200,
        description: "OK",
        content: new OA\JsonContent(
          type: "object",
          properties: [
            new OA\Property(property: "count", type: "integer", example: 10),
            new OA\Property(
              property: "dataModels",
              type: "array",
              items: new OA\Items(ref: "#/components/schemas/HisRequest")
            ),
            new OA\Property(property: "total", type: "integer", example: 100),
          ]
        )
      ),
      new OA\Response(
        response: 401,
        description: "Unauthorized",
        content: new OA\JsonContent(ref: "#/components/schemas/Unauthorized")
      ),
    ]
  )]
  public function actionIndex()
  {
    $search['HisRequestSearch'] = Yii::$app->request->queryParams;
    $searchModel = new HisRequestSearch();
    $dataProvider = $searchModel->search($search);

    return $this->apiCollection([
      'count' => $dataProvider->count,
      'dataModels' => $dataProvider->models,
    ], $dataProvider->totalCount);
  }*/

  #[OA\Post(
    path: "/his-request",
    summary: "Create data hospital request API",
    operationId: "hisRequestCreate",
    tags: ["HisRequest"],
    security: [["bearerAuth" => []]],
    requestBody: new OA\RequestBody(
      required: true,
      content: new OA\JsonContent(ref: "#/components/schemas/CreateHisRequest")
    ),
    responses: [
      new OA\Response(
        response: 201,
        description: "Created",
        content: new OA\JsonContent(ref: "#/components/schemas/HisRequest")
      ),
      new OA\Response(
        response: 422,
        description: "Validation error",
        content: new OA\JsonContent(ref: "#/components/schemas/ErrorValidate")
      ),
    ]
  )]
  public function actionCreate()
  {


    // ---------- Helper: HL7 DTM converters ----------
    $hl7Date = function (?string $s): ?string {
      $s = trim((string)$s);
      if ($s === '') return null;
      $y = substr($s, 0, 4);
      $m = substr($s, 4, 2);
      $d = substr($s, 6, 2);
      if (!checkdate((int)$m, (int)$d, (int)$y)) return null;
      return sprintf('%04d-%02d-%02d', $y, $m, $d);
    };
    $hl7DateTime = function (?string $s): ?string {
      $s = trim((string)$s);
      if ($s === '') return null;
      $y = substr($s, 0, 4);
      $m = substr($s, 4, 2);
      $d = substr($s, 6, 2);
      $H = strlen($s) >= 10 ? substr($s, 8, 2) : '00';
      $i = strlen($s) >= 12 ? substr($s, 10, 2) : '00';
      $S = strlen($s) >= 14 ? substr($s, 12, 2) : '00';
      if (!checkdate((int)$m, (int)$d, (int)$y)) return null;
      return sprintf('%04d-%02d-%02d %02d:%02d:%02d', $y, $m, $d, $H, $i, $S);
    };

    // ---------- Read & normalize body ----------
    $root = Yii::$app->request->getBodyParams();
    // payload อาจมาเป็น {'HisRequest':{...}} หรือเป็น {...} ตรง ๆ
    $reqData = $root['HisRequest'] ?? $root;

    //error_log('[HisRequest] INCOMING: ' . print_r($reqData, true));
    if (HisRequest::find()->where(['message_control_id' => $reqData['message_control_id'] ?? null])->exists()) {
      return $this->apiConflict(
        'DUPLICATE_MESSAGE',
        'Duplicate message_control_id: ' . ($reqData['message_control_id'] ?? 'unknown'),
        ['message_control_id' => $reqData['message_control_id'] ?? null]
      );
    }

    $tx = Yii::$app->db->beginTransaction();
    try {
      // =======================
      // 1) SAVE his_request
      // =======================
      $req = new HisRequest();
      //$req->import_at = date('Y-m-d H:i:s');

      // แปลง DTM ก่อนเซฟ (ถ้า model ใช้ DATE/DATETIME)
      $reqData['request_datetime']        = $hl7DateTime($reqData['request_datetime']        ?? null);
      $reqData['date_time_of_message']    = $hl7DateTime($reqData['date_time_of_message']    ?? null);
      $reqData['date_time_of_birth']      = $hl7Date($reqData['date_time_of_birth']      ?? null);
      $reqData['admit_date_time']         = $hl7DateTime($reqData['admit_date_time']         ?? null);
      $reqData['discharge_date_time']     = $hl7DateTime($reqData['discharge_date_time']     ?? null);
      $reqData['date_time_of_transaction'] = $hl7DateTime($reqData['date_time_of_transaction'] ?? null);

      // เผื่อ message_type แยกแล้ว ใส่ทั้งสาม field
      if (!empty($reqData['message_type']) && empty($reqData['message_type_code'])) {
        $parts = explode('^', $reqData['message_type']);
        $reqData['message_type_code'] = $parts[0] ?? null;
        $reqData['message_type_name'] = $parts[1] ?? null;
      }

      // map ลง model (ให้แน่ใจว่า HisRequest::rules() รับฟิลด์ทั้งหมดเป็น safe หรือกำหนดตามเหมาะสม)
      $req->attributes = $reqData;

      if (!$req->save()) {
        error_log('[HisRequest] ERROR: ' . json_encode($req->errors, JSON_UNESCAPED_UNICODE));
        throw new \Exception('Save his_request failed');
      }

      // =======================
      // 2) SAVE his_obr (+ his_obx)
      // =======================
      $orders = $reqData['orders'] ?? [];
      foreach ($orders as $oIdx => $o) {
        if (empty($o['obr'])) continue; // ไม่มี OBR ข้าม

        $obrIn = $o['obr'];

        $obr = new HisObr();
        $obr->his_request_id = $req->id;

        // แปลง DTM OBR
        $obrIn['requested_date_time'] = $hl7DateTime($obrIn['requested_date_time'] ?? null);

        // map fields (ตาม schema ล่าสุด)
        $mapFields = [
          'obr_set_id',
          'obr_placer_order_number',
          'obr_filler_order_number',
          // raw และ flatten ของ universal_service
          'universal_service',
          'universal_service_id',
          'universal_service_text',
          'universal_service_name_of_coding_system',
          'universal_service_alternate_id',
          'universal_service_alternate_text',
          'name_of_alternate_coding_system',
          'priority',
          'requested_date_time',
          'relevant_clinical_info',
          // specimen
          'specimen_source',
          'specimen_source_code',
          'specimen_source_name',
          // ordering provider
          'obr_ordering_provider_id',
          'obr_ordering_provider_last_name',
          'obr_ordering_provider_first_name',
          'obr_ordering_provider_middle_name',
          'obr_ordering_provider_prefix_name',
          // etc.
          'placer_field_1',
          'ward_code_name',
          'charge_to_practice',
        ];
        foreach ($mapFields as $f) {
          if (array_key_exists($f, $obrIn)) {
            $obr->$f = $obrIn[$f];
          }
        }

        // ถ้ามี ORC ระดับก้อน (ออปชั่น)
        if (!empty($o['orc'])) {
          $orc = $o['orc'];
          $obr->orc_order_control            = $orc['order_control']                ?? null;
          $obr->orc_placer_no               = $orc['orc_placer_order_number']      ?? null;
          $obr->orc_filler_no               = $orc['orc_filler_order_number']      ?? null;
          $obr->orc_status                  = $orc['order_status']                  ?? null;
          $obr->orc_datetime_tx             = $hl7DateTime($orc['date_time_of_transaction'] ?? null);
          $obr->orc_ordering_provider_raw   = $orc['orc_ordering_provider']         ?? null;
          $obr->orc_ordering_provider_id    = $orc['orc_ordering_provider_id']      ?? null;
          $obr->orc_ordering_provider_lastname = $orc['orc_ordering_provider_last_name'] ?? null;
          $obr->orc_ordering_provider_firstname = $orc['orc_ordering_provider_first_name'] ?? null;
          $obr->orc_entering_org            = $orc['entering_organization']         ?? null;
          $obr->orc_entering_device         = $orc['entering_device']               ?? null;
        }

        if (!$obr->save()) {
          error_log('[HisObr] ERROR: ' . json_encode($obr->errors, JSON_UNESCAPED_UNICODE));
          throw new \Exception('Save his_obr failed at index ' . $oIdx);
        }

        // ---------- OBX ----------
        $obxArr = $o['obx'] ?? [];
        foreach ($obxArr as $xIdx => $x) {
          $obx = new HisObx();
          $obx->his_obr_id = $obr->id;

          // map ชื่อฟิลด์ให้ตรงกับ schema (เราใช้ obx_text, obx_values)
          $obx->set_id        = $x['set_id']         ?? null;
          $obx->value_type    = $x['value_type']     ?? null;
          $obx->identifier    = $x['id']             ?? null;
          $obx->obx_text      = $x['text']           ?? null;
          $obx->coding_system = $x['system']         ?? null;

          // values: อาจมาเป็น array หรือ string; ถ้า array ให้ join ด้วย "~"
          $values = $x['values'] ?? null;
          if (is_array($values)) {
            $values = implode('~', $values);
          }
          $obx->obx_values    = $values;

          $obx->units             = $x['units']            ?? null;
          $obx->reference_range   = $x['reference_range']  ?? null;
          $obx->result_status     = $x['result_status']    ?? null;

          if (!$obx->save()) {
            error_log('[HisObx] ERROR: ' . json_encode($obx->errors, JSON_UNESCAPED_UNICODE));
            throw new \Exception('Save his_obx failed at req=' . $req->id . ' obr=' . $obr->id . ' idx=' . $xIdx);
          }
        }
      }

      $tx->commit();

      // ตอบกลับข้อมูลที่สร้าง (จะส่งเฉพาะ his_request ตามเดิม)
      return $this->apiCreated($req, 'CREATE_COMPLETED');
    } catch (\Throwable $e) {
      $tx->rollBack();
      error_log('[HisRequest] ROLLBACK: ' . $e->getMessage());
      return $this->apiValidate(['error' => [$e->getMessage()]]);
    }
  }
  // ---------- End of actionCreate ----------
  /*
  #[OA\Put(
    path: "/his-request/{id}",
    summary: "Update data hospital import",
    operationId: "hisRequestUpdate",
    tags: ["HisRequest"],
    parameters: [
      new OA\Parameter(
        name: "id",
        in: "path",
        required: true,
        description: "HisRequest ID",
        schema: new OA\Schema(type: "integer", example: 123)
      ),
    ],
    requestBody: new OA\RequestBody(
      required: true,
      content: new OA\JsonContent(ref: "#/components/schemas/UpdateHisRequest")
    ),
    responses: [
      new OA\Response(
        response: 202,
        description: "Accepted",
        content: new OA\JsonContent(ref: "#/components/schemas/HisRequest")
      ),
      new OA\Response(
        response: 422,
        description: "Validation error",
        content: new OA\JsonContent(ref: "#/components/schemas/ErrorValidate")
      ),
      new OA\Response(response: 404, description: "Not found"),
    ]
  )]
  public function actionUpdate($id)
  {
    $dataRequest['HisRequest'] = Yii::$app->request->getBodyParams();
    $model = $this->findModel($id);
    if ($model->load($dataRequest) && $model->save()) {
      return $this->apiUpdated($model);
    }
    return $this->apiValidate($model->errors);
  }

  #[OA\Get(
    path: "/his-request/{id}",
    summary: "Get data hospital import",
    operationId: "hisRequestView",
    tags: ["HisRequest"],
    parameters: [
      new OA\Parameter(
        name: "id",
        in: "path",
        required: true,
        schema: new OA\Schema(type: "integer", example: 123)
      ),
    ],
    responses: [
      new OA\Response(
        response: 200,
        description: "OK",
        content: new OA\JsonContent(ref: "#/components/schemas/HisRequest")
      ),
      new OA\Response(response: 404, description: "Not found"),
    ]
  )]
  public function actionView($id)
  {
    return $this->apiItem($this->findModel($id));
  }

  #[OA\Delete(
    path: "/his-request/{id}",
    summary: "Delete data hospital import",
    operationId: "hisRequestDelete",
    tags: ["HisRequest"],
    parameters: [
      new OA\Parameter(
        name: "id",
        in: "path",
        required: true,
        schema: new OA\Schema(type: "integer", example: 123)
      ),
    ],
    responses: [
      new OA\Response(response: 202, description: "Accepted"),
      new OA\Response(response: 404, description: "Not found"),
    ]
  )]
  public function actionDelete($id)
  {
    if ($this->findModel($id)->delete()) {
      return $this->apiDeleted(true);
    }
    return $this->apiDeleted(false);
  }

  protected function findModel($id)
  {
    if (($model = HisRequest::findOne($id)) !== null) {
      return $model;
    }
    throw new NotFoundHttpException('Resource not found');
  }
    */
}