package http

import (
	"errors"
	"net/http"
	"regexp"
	"strings"
	"unicode/utf8"

	"primaya-api/cpone-middleware/internal/repository"
)

var validLabNumber = regexp.MustCompile(`^[A-Za-z0-9-]+$`)

type LabResultResponse struct {
	Success bool                      `json:"success"`
	Status  string                    `json:"status"`
	Message string                    `json:"message"`
	Data    *repository.LabResultData `json:"data"`
}

func (h Handler) GetLabResult(w http.ResponseWriter, r *http.Request) {
	labNumber := strings.TrimSpace(r.PathValue("labNumber"))
	if labNumber == "" {
		writeLabResultResponse(w, http.StatusUnprocessableEntity, false, "validation_error", "Nomor laboratorium wajib diisi", nil)
		return
	}
	if utf8.RuneCountInString(labNumber) > 50 {
		writeLabResultResponse(w, http.StatusUnprocessableEntity, false, "validation_error", "Nomor laboratorium maksimal 50 karakter", nil)
		return
	}
	if !validLabNumber.MatchString(labNumber) {
		writeLabResultResponse(w, http.StatusUnprocessableEntity, false, "validation_error", "Nomor laboratorium hanya boleh berisi huruf, angka, dan tanda hubung", nil)
		return
	}

	outcome, err := h.labResultRepository(r.Context()).GetLabResult(r.Context(), strings.ToUpper(labNumber))
	if err != nil {
		var validationErr repository.ValidationError
		if errors.As(err, &validationErr) {
			writeLabResultResponse(w, http.StatusUnprocessableEntity, false, "validation_error", validationErr.Message, nil)
			return
		}
		writeLabResultResponse(w, http.StatusInternalServerError, false, "error", err.Error(), nil)
		return
	}

	writeLabResultResponse(w, outcome.HTTPStatus, outcome.Success, outcome.Status, outcome.Message, outcome.Data)
}

func writeLabResultResponse(w http.ResponseWriter, statusCode int, success bool, status, message string, data *repository.LabResultData) {
	WriteJSON(w, statusCode, LabResultResponse{
		Success: success,
		Status:  status,
		Message: message,
		Data:    data,
	})
}