package analytic

import (
	"encoding/json"
	"net/http"
	"strconv"
	"strings"

	"git.gocasts.ir/ebhomengo/niki/patientapp/service/entity"
)

func writeJSON(w http.ResponseWriter, status int, v any) {
	w.Header().Set("Content-Type", "application/json")
	w.WriteHeader(status)
	_ = json.NewEncoder(w).Encode(v)
}

func writeError(w http.ResponseWriter, status int, msg string) {
	writeJSON(w, status, map[string]any{"error": msg})
}

func parseInt(q urlValues, key string) (int, error) {
	val := strings.TrimSpace(q.Get(key))
	if val == "" {
		return 0, nil
	}
	return strconv.Atoi(val)
}

type urlValues interface {
	Get(key string) string
}

func parseIntPtr(q urlValues, key string) (*int, error) {
	val := strings.TrimSpace(q.Get(key))
	if val == "" {
		return nil, nil
	}
	i, err := strconv.Atoi(val)
	if err != nil {
		return nil, err
	}
	return &i, nil
}

func parseSexPtr(q urlValues, key string) (*entity.Sex, error) {
	val := strings.TrimSpace(q.Get(key))
	if val == "" {
		return nil, nil
	}
	s := entity.Sex(val)
	if !s.SexValidation() {
		return nil, strconv.ErrSyntax
	}
	return &s, nil
}

func parseMapLevel(q urlValues, key string) (entity.MapLevel, error) {
	val := strings.TrimSpace(q.Get(key))
	if val == "" {
		return "", strconv.ErrSyntax
	}
	l := entity.MapLevel(val)
	switch l {
	case entity.MapLevelCity, entity.MapLevelProvince, entity.MapLevelCountry:
		return l, nil
	default:
		return "", strconv.ErrSyntax
	}
}