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 * in the documentation and/or other materials provided with the
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 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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#include "third_party/blink/renderer/core/html/forms/date_time_local_input_type.h"

#include "third_party/blink/public/strings/grit/blink_strings.h"
#include "third_party/blink/renderer/core/frame/web_feature.h"
#include "third_party/blink/renderer/core/html/forms/date_time_fields_state.h"
#include "third_party/blink/renderer/core/html/forms/html_input_element.h"
#include "third_party/blink/renderer/core/html_names.h"
#include "third_party/blink/renderer/core/input_type_names.h"
#include "third_party/blink/renderer/platform/bindings/exception_state.h"
#include "third_party/blink/renderer/platform/text/date_components.h"
#include "third_party/blink/renderer/platform/text/platform_locale.h"
#include "third_party/blink/renderer/platform/wtf/text/wtf_string.h"

namespace blink {

static const int kDateTimeLocalDefaultStep = 60;
static const int kDateTimeLocalDefaultStepBase = 0;
static const int kDateTimeLocalStepScaleFactor = 1000;

void DateTimeLocalInputType::CountUsage() {
  CountUsageIfVisible(WebFeature::kInputTypeDateTimeLocal);
}

const AtomicString& DateTimeLocalInputType::FormControlType() const {
  return input_type_names::kDatetimeLocal;
}

double DateTimeLocalInputType::ValueAsDate() const {
  // valueAsDate doesn't work for the datetime-local type according to the
  // standard.
  return DateComponents::InvalidMilliseconds();
}

void DateTimeLocalInputType::SetValueAsDate(
    const base::Optional<base::Time>& value,
    ExceptionState& exception_state) const {
  // valueAsDate doesn't work for the datetime-local type according to the
  // standard.
  InputType::SetValueAsDate(value, exception_state);
}

StepRange DateTimeLocalInputType::CreateStepRange(
    AnyStepHandling any_step_handling) const {
  DEFINE_STATIC_LOCAL(const StepRange::StepDescription, step_description,
                      (kDateTimeLocalDefaultStep, kDateTimeLocalDefaultStepBase,
                       kDateTimeLocalStepScaleFactor,
                       StepRange::kScaledStepValueShouldBeInteger));

  return InputType::CreateStepRange(
      any_step_handling, kDateTimeLocalDefaultStepBase,
      Decimal::FromDouble(DateComponents::MinimumDateTime()),
      Decimal::FromDouble(DateComponents::MaximumDateTime()), step_description);
}

bool DateTimeLocalInputType::ParseToDateComponentsInternal(
    const String& string,
    DateComponents* out) const {
  DCHECK(out);
  unsigned end;
  return out->ParseDateTimeLocal(string, 0, end) && end == string.length();
}

bool DateTimeLocalInputType::SetMillisecondToDateComponents(
    double value,
    DateComponents* date) const {
  DCHECK(date);
  return date->SetMillisecondsSinceEpochForDateTimeLocal(value);
}

String DateTimeLocalInputType::LocalizeValue(
    const String& proposed_value) const {
  DateComponents date;
  if (!ParseToDateComponents(proposed_value, &date))
    return proposed_value;

  Locale::FormatType format_type = ShouldHaveSecondField(date)
                                       ? Locale::kFormatTypeMedium
                                       : Locale::kFormatTypeShort;
  String localized = GetElement().GetLocale().FormatDateTime(date, format_type);
  return localized.IsEmpty() ? proposed_value : localized;
}

void DateTimeLocalInputType::WarnIfValueIsInvalid(const String& value) const {
  if (value != GetElement().SanitizeValue(value))
    AddWarningToConsole(
        "The specified value %s does not conform to the required format.  The "
        "format is \"yyyy-MM-ddThh:mm\" followed by optional \":ss\" or "
        "\":ss.SSS\".",
        value);
}

String DateTimeLocalInputType::FormatDateTimeFieldsState(
    const DateTimeFieldsState& date_time_fields_state) const {
  if (!date_time_fields_state.HasDayOfMonth() ||
      !date_time_fields_state.HasMonth() || !date_time_fields_state.HasYear() ||
      !date_time_fields_state.HasHour() ||
      !date_time_fields_state.HasMinute() || !date_time_fields_state.HasAMPM())
    return g_empty_string;

  if (date_time_fields_state.HasMillisecond() &&
      date_time_fields_state.Millisecond()) {
    return String::Format(
        "%04u-%02u-%02uT%02u:%02u:%02u.%03u", date_time_fields_state.Year(),
        date_time_fields_state.Month(), date_time_fields_state.DayOfMonth(),
        date_time_fields_state.Hour23(), date_time_fields_state.Minute(),
        date_time_fields_state.HasSecond() ? date_time_fields_state.Second()
                                           : 0,
        date_time_fields_state.Millisecond());
  }

  if (date_time_fields_state.HasSecond() && date_time_fields_state.Second()) {
    return String::Format(
        "%04u-%02u-%02uT%02u:%02u:%02u", date_time_fields_state.Year(),
        date_time_fields_state.Month(), date_time_fields_state.DayOfMonth(),
        date_time_fields_state.Hour23(), date_time_fields_state.Minute(),
        date_time_fields_state.Second());
  }

  return String::Format(
      "%04u-%02u-%02uT%02u:%02u", date_time_fields_state.Year(),
      date_time_fields_state.Month(), date_time_fields_state.DayOfMonth(),
      date_time_fields_state.Hour23(), date_time_fields_state.Minute());
}

void DateTimeLocalInputType::SetupLayoutParameters(
    DateTimeEditElement::LayoutParameters& layout_parameters,
    const DateComponents& date) const {
  if (ShouldHaveSecondField(date)) {
    layout_parameters.date_time_format =
        layout_parameters.locale.DateTimeFormatWithSeconds();
    layout_parameters.fallback_date_time_format = "yyyy-MM-dd'T'HH:mm:ss";
  } else {
    layout_parameters.date_time_format =
        layout_parameters.locale.DateTimeFormatWithoutSeconds();
    layout_parameters.fallback_date_time_format = "yyyy-MM-dd'T'HH:mm";
  }
  if (!ParseToDateComponents(
          GetElement().FastGetAttribute(html_names::kMinAttr),
          &layout_parameters.minimum))
    layout_parameters.minimum = DateComponents();
  if (!ParseToDateComponents(
          GetElement().FastGetAttribute(html_names::kMaxAttr),
          &layout_parameters.maximum))
    layout_parameters.maximum = DateComponents();
  layout_parameters.placeholder_for_day =
      GetLocale().QueryString(IDS_FORM_PLACEHOLDER_FOR_DAY_OF_MONTH_FIELD);
  layout_parameters.placeholder_for_month =
      GetLocale().QueryString(IDS_FORM_PLACEHOLDER_FOR_MONTH_FIELD);
  layout_parameters.placeholder_for_year =
      GetLocale().QueryString(IDS_FORM_PLACEHOLDER_FOR_YEAR_FIELD);
}

bool DateTimeLocalInputType::IsValidFormat(bool has_year,
                                           bool has_month,
                                           bool has_week,
                                           bool has_day,
                                           bool has_ampm,
                                           bool has_hour,
                                           bool has_minute,
                                           bool has_second) const {
  return has_year && has_month && has_day && has_ampm && has_hour && has_minute;
}

String DateTimeLocalInputType::AriaRoleForPickerIndicator() const {
  return GetLocale().QueryString(IDS_AX_CALENDAR_SHOW_DATE_TIME_LOCAL_PICKER);
}

}  // namespace blink