package http

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

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

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

func (h Handler) AddLabPackage(w http.ResponseWriter, r *http.Request) {
	regID := strings.TrimSpace(r.PathValue("regId"))
	if regID == "" || utf8.RuneCountInString(regID) > 50 || !labIdentifier.MatchString(regID) {
		writeLabResponse(w, http.StatusUnprocessableEntity, false, "validation_error", "Nomor registrasi laboratorium hanya boleh berisi huruf, angka, dan tanda hubung", nil)
		return
	}
	payload, _ := decodeJSONObject(r)
	params, message := validateAddLabPackage(payload)
	if message != "" {
		writeLabResponse(w, http.StatusUnprocessableEntity, false, "validation_error", message, nil)
		return
	}
	outcome, err := h.labRepository(r.Context()).AddLabPackage(r.Context(), strings.ToUpper(regID), params)
	if err != nil {
		if validationMessage, ok := asValidationError(err); ok {
			writeLabResponse(w, http.StatusUnprocessableEntity, false, "validation_error", validationMessage, nil)
			return
		}
		writeLabResponse(w, http.StatusInternalServerError, false, "error", err.Error(), nil)
		return
	}
	writeLabResponse(w, outcome.HTTPStatus, outcome.Success, outcome.Status, outcome.Message, outcome.Data)
}

func validateAddLabPackage(payload map[string]any) (repository.AddLabPackageParams, string) {
	packageID, message := requiredString(payload, "paket_id", 50, "Paket ID wajib diisi")
	if message != "" {
		return repository.AddLabPackageParams{}, message
	}
	packageID = strings.ToUpper(strings.TrimSpace(packageID))
	if !labIdentifier.MatchString(packageID) {
		return repository.AddLabPackageParams{}, "Paket ID hanya boleh berisi huruf, angka, dan tanda hubung"
	}
	cito := false
	if value, present := nullableValue(payload, "cito"); present {
		var valid bool
		cito, valid = parseLaravelBoolean(value)
		if !valid {
			return repository.AddLabPackageParams{}, "The cito field must be true or false."
		}
	}
	markup := 0.0
	if value, present := nullableValue(payload, "markup_cito"); present {
		var valid bool
		markup, valid = parseNumeric(value)
		if !valid {
			return repository.AddLabPackageParams{}, "The markup cito must be a number."
		}
		if markup < 0 || markup > 100 {
			return repository.AddLabPackageParams{}, "The markup cito must be between 0 and 100."
		}
	}
	if !cito {
		markup = 0
	}
	notes, _, message := optionalString(payload, "catatan", 500)
	if message != "" {
		return repository.AddLabPackageParams{}, message
	}
	channel, present, message := optionalString(payload, "channel", 50)
	if message != "" {
		return repository.AddLabPackageParams{}, message
	}
	if !present {
		channel = "CPONE"
	}
	return repository.AddLabPackageParams{
		PackageID: packageID, Cito: cito, MarkupCito: markup,
		Notes: strings.TrimSpace(notes), Channel: strings.ToUpper(strings.TrimSpace(channel)),
	}, ""
}