/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#include "mozilla/dom/InputType.h"

#include "mozilla/Assertions.h"
#include "mozilla/Likely.h"
#include "mozilla/dom/ButtonInputTypes.h"
#include "mozilla/dom/CheckableInputTypes.h"
#include "mozilla/dom/ColorInputType.h"
#include "mozilla/dom/DateTimeInputTypes.h"
#include "mozilla/dom/FileInputType.h"
#include "mozilla/dom/HTMLInputElement.h"
#include "mozilla/dom/HiddenInputType.h"
#include "mozilla/dom/NumericInputTypes.h"
#include "mozilla/dom/SingleLineTextInputTypes.h"
#include "nsContentUtils.h"
#include "nsIFormControl.h"

using namespace mozilla;
using namespace mozilla::dom;

constexpr Decimal InputType::kStepAny;

/* static */ UniquePtr<InputType, InputType::DoNotDelete> InputType::Create(
    HTMLInputElement* aInputElement, FormControlType aType, void* aMemory) {
  UniquePtr<InputType, InputType::DoNotDelete> inputType;
  switch (aType) {
    // Single line text
    case FormControlType::InputText:
      inputType.reset(TextInputType::Create(aInputElement, aMemory));
      break;
    case FormControlType::InputTel:
      inputType.reset(TelInputType::Create(aInputElement, aMemory));
      break;
    case FormControlType::InputEmail:
      inputType.reset(EmailInputType::Create(aInputElement, aMemory));
      break;
    case FormControlType::InputSearch:
      inputType.reset(SearchInputType::Create(aInputElement, aMemory));
      break;
    case FormControlType::InputPassword:
      inputType.reset(PasswordInputType::Create(aInputElement, aMemory));
      break;
    case FormControlType::InputUrl:
      inputType.reset(URLInputType::Create(aInputElement, aMemory));
      break;
    // Button
    case FormControlType::InputButton:
      inputType.reset(ButtonInputType::Create(aInputElement, aMemory));
      break;
    case FormControlType::InputSubmit:
      inputType.reset(SubmitInputType::Create(aInputElement, aMemory));
      break;
    case FormControlType::InputImage:
      inputType.reset(ImageInputType::Create(aInputElement, aMemory));
      break;
    case FormControlType::InputReset:
      inputType.reset(ResetInputType::Create(aInputElement, aMemory));
      break;
    // Checkable
    case FormControlType::InputCheckbox:
      inputType.reset(CheckboxInputType::Create(aInputElement, aMemory));
      break;
    case FormControlType::InputRadio:
      inputType.reset(RadioInputType::Create(aInputElement, aMemory));
      break;
    // Numeric
    case FormControlType::InputNumber:
      inputType.reset(NumberInputType::Create(aInputElement, aMemory));
      break;
    case FormControlType::InputRange:
      inputType.reset(RangeInputType::Create(aInputElement, aMemory));
      break;
    // DateTime
    case FormControlType::InputDate:
      inputType.reset(DateInputType::Create(aInputElement, aMemory));
      break;
    case FormControlType::InputTime:
      inputType.reset(TimeInputType::Create(aInputElement, aMemory));
      break;
    case FormControlType::InputMonth:
      inputType.reset(MonthInputType::Create(aInputElement, aMemory));
      break;
    case FormControlType::InputWeek:
      inputType.reset(WeekInputType::Create(aInputElement, aMemory));
      break;
    case FormControlType::InputDatetimeLocal:
      inputType.reset(DateTimeLocalInputType::Create(aInputElement, aMemory));
      break;
    // Others
    case FormControlType::InputColor:
      inputType.reset(ColorInputType::Create(aInputElement, aMemory));
      break;
    case FormControlType::InputFile:
      inputType.reset(FileInputType::Create(aInputElement, aMemory));
      break;
    case FormControlType::InputHidden:
      inputType.reset(HiddenInputType::Create(aInputElement, aMemory));
      break;
    default:
      inputType.reset(TextInputType::Create(aInputElement, aMemory));
  }

  return inputType;
}

bool InputType::IsMutable() const { return !mInputElement->IsDisabled(); }

bool InputType::IsValueEmpty() const { return mInputElement->IsValueEmpty(); }

void InputType::GetNonFileValueInternal(nsAString& aValue) const {
  return mInputElement->GetNonFileValueInternal(aValue);
}

nsresult InputType::SetValueInternal(const nsAString& aValue,
                                     const ValueSetterOptions& aOptions) {
  RefPtr<HTMLInputElement> inputElement(mInputElement);
  return inputElement->SetValueInternal(aValue, aOptions);
}

nsIFrame* InputType::GetPrimaryFrame() const {
  return mInputElement->GetPrimaryFrame();
}

void InputType::DropReference() {
  // Drop our (non ref-counted) reference.
  mInputElement = nullptr;
}

bool InputType::IsTooLong() const { return false; }

bool InputType::IsTooShort() const { return false; }

bool InputType::IsValueMissing() const { return false; }

bool InputType::HasTypeMismatch() const { return false; }

Maybe<bool> InputType::HasPatternMismatch() const { return Some(false); }

bool InputType::IsRangeOverflow() const { return false; }

bool InputType::IsRangeUnderflow() const { return false; }

bool InputType::HasStepMismatch() const { return false; }

bool InputType::HasBadInput() const { return false; }

nsresult InputType::GetValidationMessage(
    nsAString& aValidationMessage,
    nsIConstraintValidation::ValidityStateType aType) {
  aValidationMessage.Truncate();

  switch (aType) {
    case nsIConstraintValidation::VALIDITY_STATE_TOO_LONG: {
      int32_t maxLength = mInputElement->MaxLength();
      int32_t textLength = mInputElement->InputTextLength(CallerType::System);
      nsAutoString strMaxLength;
      nsAutoString strTextLength;

      strMaxLength.AppendInt(maxLength);
      strTextLength.AppendInt(textLength);

      return nsContentUtils::FormatMaybeLocalizedString(
          aValidationMessage, nsContentUtils::eDOM_PROPERTIES,
          "FormValidationTextTooLong", mInputElement->OwnerDoc(), strMaxLength,
          strTextLength);
    }
    case nsIConstraintValidation::VALIDITY_STATE_TOO_SHORT: {
      int32_t minLength = mInputElement->MinLength();
      int32_t textLength = mInputElement->InputTextLength(CallerType::System);
      nsAutoString strMinLength;
      nsAutoString strTextLength;

      strMinLength.AppendInt(minLength);
      strTextLength.AppendInt(textLength);

      return nsContentUtils::FormatMaybeLocalizedString(
          aValidationMessage, nsContentUtils::eDOM_PROPERTIES,
          "FormValidationTextTooShort", mInputElement->OwnerDoc(), strMinLength,
          strTextLength);
    }
    case nsIConstraintValidation::VALIDITY_STATE_VALUE_MISSING:
      return GetValueMissingMessage(aValidationMessage);
    case nsIConstraintValidation::VALIDITY_STATE_TYPE_MISMATCH: {
      return GetTypeMismatchMessage(aValidationMessage);
    }
    case nsIConstraintValidation::VALIDITY_STATE_PATTERN_MISMATCH: {
      nsAutoString title;
      mInputElement->GetAttr(nsGkAtoms::title, title);

      if (title.IsEmpty()) {
        return nsContentUtils::GetMaybeLocalizedString(
            nsContentUtils::eDOM_PROPERTIES, "FormValidationPatternMismatch",
            mInputElement->OwnerDoc(), aValidationMessage);
      }

      if (title.Length() >
          nsIConstraintValidation::sContentSpecifiedMaxLengthMessage) {
        title.Truncate(
            nsIConstraintValidation::sContentSpecifiedMaxLengthMessage);
      }
      return nsContentUtils::FormatMaybeLocalizedString(
          aValidationMessage, nsContentUtils::eDOM_PROPERTIES,
          "FormValidationPatternMismatchWithTitle", mInputElement->OwnerDoc(),
          title);
    }
    case nsIConstraintValidation::VALIDITY_STATE_RANGE_OVERFLOW:
      return GetRangeOverflowMessage(aValidationMessage);
    case nsIConstraintValidation::VALIDITY_STATE_RANGE_UNDERFLOW:
      return GetRangeUnderflowMessage(aValidationMessage);
    case nsIConstraintValidation::VALIDITY_STATE_STEP_MISMATCH: {
      Decimal value = mInputElement->GetValueAsDecimal();
      if (MOZ_UNLIKELY(NS_WARN_IF(value.isNaN()))) {
        // TODO(bug 1651070): This should ideally never happen, but we don't
        // deal with lang changes correctly, so it could.
        return GetBadInputMessage(aValidationMessage);
      }

      Decimal step = mInputElement->GetStep();
      MOZ_ASSERT(step != kStepAny && step > Decimal(0));

      Decimal stepBase = mInputElement->GetStepBase();

      Decimal valueLow = value - NS_floorModulo(value - stepBase, step);
      Decimal valueHigh = value + step - NS_floorModulo(value - stepBase, step);

      Decimal maximum = mInputElement->GetMaximum();

      if (maximum.isNaN() || valueHigh <= maximum) {
        nsAutoString valueLowStr, valueHighStr;
        ConvertNumberToString(valueLow, Localized::Yes, valueLowStr);
        ConvertNumberToString(valueHigh, Localized::Yes, valueHighStr);

        if (valueLowStr.Equals(valueHighStr)) {
          return nsContentUtils::FormatMaybeLocalizedString(
              aValidationMessage, nsContentUtils::eDOM_PROPERTIES,
              "FormValidationStepMismatchOneValue", mInputElement->OwnerDoc(),
              valueLowStr);
        }
        return nsContentUtils::FormatMaybeLocalizedString(
            aValidationMessage, nsContentUtils::eDOM_PROPERTIES,
            "FormValidationStepMismatch", mInputElement->OwnerDoc(),
            valueLowStr, valueHighStr);
      }

      nsAutoString valueLowStr;
      ConvertNumberToString(valueLow, Localized::Yes, valueLowStr);

      return nsContentUtils::FormatMaybeLocalizedString(
          aValidationMessage, nsContentUtils::eDOM_PROPERTIES,
          "FormValidationStepMismatchOneValue", mInputElement->OwnerDoc(),
          valueLowStr);
    }
    case nsIConstraintValidation::VALIDITY_STATE_BAD_INPUT:
      return GetBadInputMessage(aValidationMessage);
    default:
      MOZ_ASSERT_UNREACHABLE("Unknown validity state");
      return NS_ERROR_UNEXPECTED;
  }
}

nsresult InputType::GetValueMissingMessage(nsAString& aMessage) {
  return nsContentUtils::GetMaybeLocalizedString(
      nsContentUtils::eDOM_PROPERTIES, "FormValidationValueMissing",
      mInputElement->OwnerDoc(), aMessage);
}

nsresult InputType::GetTypeMismatchMessage(nsAString& aMessage) {
  return NS_ERROR_UNEXPECTED;
}

nsresult InputType::GetRangeOverflowMessage(nsAString& aMessage) {
  return NS_ERROR_UNEXPECTED;
}

nsresult InputType::GetRangeUnderflowMessage(nsAString& aMessage) {
  return NS_ERROR_UNEXPECTED;
}

nsresult InputType::GetBadInputMessage(nsAString& aMessage) {
  return NS_ERROR_UNEXPECTED;
}

auto InputType::ConvertStringToNumber(const nsAString& aValue) const
    -> StringToNumberResult {
  NS_WARNING("InputType::ConvertStringToNumber called");
  return {};
}

bool InputType::ConvertNumberToString(Decimal, Localized, nsAString&) const {
  NS_WARNING("InputType::ConvertNumberToString called");
  return false;
}

bool InputType::ParseDate(const nsAString& aValue, uint32_t* aYear,
                          uint32_t* aMonth, uint32_t* aDay) const {
  // TODO: move this function and implementation to DateTimeInpuTypeBase when
  // refactoring is completed. Now we can only call HTMLInputElement::ParseDate
  // from here, since the method is protected and only InputType is a friend
  // class.
  return mInputElement->ParseDate(aValue, aYear, aMonth, aDay);
}

bool InputType::ParseTime(const nsAString& aValue, uint32_t* aResult) const {
  // see comment in InputType::ParseDate().
  return HTMLInputElement::ParseTime(aValue, aResult);
}

bool InputType::ParseMonth(const nsAString& aValue, uint32_t* aYear,
                           uint32_t* aMonth) const {
  // see comment in InputType::ParseDate().
  return mInputElement->ParseMonth(aValue, aYear, aMonth);
}

bool InputType::ParseWeek(const nsAString& aValue, uint32_t* aYear,
                          uint32_t* aWeek) const {
  // see comment in InputType::ParseDate().
  return mInputElement->ParseWeek(aValue, aYear, aWeek);
}

bool InputType::ParseDateTimeLocal(const nsAString& aValue, uint32_t* aYear,
                                   uint32_t* aMonth, uint32_t* aDay,
                                   uint32_t* aTime) const {
  // see comment in InputType::ParseDate().
  return mInputElement->ParseDateTimeLocal(aValue, aYear, aMonth, aDay, aTime);
}

int32_t InputType::MonthsSinceJan1970(uint32_t aYear, uint32_t aMonth) const {
  // see comment in InputType::ParseDate().
  return mInputElement->MonthsSinceJan1970(aYear, aMonth);
}

double InputType::DaysSinceEpochFromWeek(uint32_t aYear, uint32_t aWeek) const {
  // see comment in InputType::ParseDate().
  return mInputElement->DaysSinceEpochFromWeek(aYear, aWeek);
}

uint32_t InputType::DayOfWeek(uint32_t aYear, uint32_t aMonth, uint32_t aDay,
                              bool isoWeek) const {
  // see comment in InputType::ParseDate().
  return mInputElement->DayOfWeek(aYear, aMonth, aDay, isoWeek);
}

uint32_t InputType::MaximumWeekInYear(uint32_t aYear) const {
  // see comment in InputType::ParseDate().
  return mInputElement->MaximumWeekInYear(aYear);
}