package handler

import (
	"context"
	"encoding/json"
	"net/http"
	"strconv"
	"time"
)

func timeNow() time.Time {
	return time.Now()
}

func ctx0() context.Context {
	return context.Background()
}

// parseJSON 解析请求体 JSON，失败返回错误
func parseJSON(r *http.Request, v any) error {
	dec := json.NewDecoder(r.Body)
	dec.DisallowUnknownFields()
	return dec.Decode(v)
}

func strPtr(s string) *string {
	if s == "" {
		return nil
	}
	return &s
}

func atoi(s string, def int) int {
	if s == "" {
		return def
	}
	n, err := strconv.Atoi(s)
	if err != nil {
		return def
	}
	return n
}

func atoi64(s string, def int64) int64 {
	if s == "" {
		return def
	}
	n, err := strconv.ParseInt(s, 10, 64)
	if err != nil {
		return def
	}
	return n
}