// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#import "components/autofill/ios/form_util/form_activity_params.h"

#import "base/strings/string_number_conversions.h"
#import "base/strings/sys_string_conversions.h"
#import "components/autofill/ios/browser/autofill_util.h"
#import "ios/web/public/js_messaging/script_message.h"

using base::SysUTF8ToNSString;

namespace autofill {

namespace {

constexpr char kActivityTypeBlur[] = "blur";
constexpr char kActivityTypeChange[] = "change";
constexpr char kActivityTypeFocus[] = "focus";
constexpr char kActivityTypeFormChanged[] = "form_changed";
constexpr char kActivityTypeInput[] = "input";
constexpr char kActivityTypeKeyUp[] = "keyup";
constexpr char kActivityTypeUnknown[] = "unknown";

constexpr char kFieldTypeButton[] = "button";
constexpr char kFieldTypeCheckbox[] = "checkbox";
constexpr char kFieldTypeColor[] = "color";
constexpr char kFieldTypeContentEditable[] = "contenteditable";
constexpr char kFieldTypeDate[] = "date";
constexpr char kFieldTypeDateTimeLocal[] = "datetime-local";
constexpr char kFieldTypeEmail[] = "email";
constexpr char kFieldTypeFile[] = "file";
constexpr char kFieldTypeHidden[] = "hidden";
constexpr char kFieldTypeImage[] = "image";
constexpr char kFieldTypeMonth[] = "month";
constexpr char kFieldTypeNumber[] = "number";
constexpr char kFieldTypePassword[] = "password";
constexpr char kFieldTypeRadio[] = "radio";
constexpr char kFieldTypeRange[] = "range";
constexpr char kFieldTypeReset[] = "reset";
constexpr char kFieldTypeSearch[] = "search";
constexpr char kFieldTypeSelectOne[] = "select-one";
constexpr char kFieldTypeSubmit[] = "submit";
constexpr char kFieldTypeTel[] = "tel";
constexpr char kFieldTypeText[] = "text";
constexpr char kFieldTypeTime[] = "time";
constexpr char kFieldTypeUrl[] = "url";
constexpr char kFieldTypeWeek[] = "week";
constexpr char kFieldTypeUnknown[] = "unknown";

const char* ToString(FormActivityParams::ActivityType type) {
  switch (type) {
    case FormActivityParams::ActivityType::kBlur:
      return kActivityTypeBlur;
    case FormActivityParams::ActivityType::kChange:
      return kActivityTypeChange;
    case FormActivityParams::ActivityType::kFocus:
      return kActivityTypeFocus;
    case FormActivityParams::ActivityType::kFormChanged:
      return kActivityTypeFormChanged;
    case FormActivityParams::ActivityType::kInput:
      return kActivityTypeInput;
    case FormActivityParams::ActivityType::kKeyUp:
      return kActivityTypeKeyUp;
    case FormActivityParams::ActivityType::kUnknown:
      return kActivityTypeUnknown;
  }
}

const char* ToString(FormActivityParams::FieldType field_type) {
  switch (field_type) {
    case FormActivityParams::FieldType::kButton:
      return kFieldTypeButton;
    case FormActivityParams::FieldType::kCheckbox:
      return kFieldTypeCheckbox;
    case FormActivityParams::FieldType::kColor:
      return kFieldTypeColor;
    case FormActivityParams::FieldType::kContentEditable:
      return kFieldTypeContentEditable;
    case FormActivityParams::FieldType::kDate:
      return kFieldTypeDate;
    case FormActivityParams::FieldType::kDateTimeLocal:
      return kFieldTypeDateTimeLocal;
    case FormActivityParams::FieldType::kEmail:
      return kFieldTypeEmail;
    case FormActivityParams::FieldType::kFile:
      return kFieldTypeFile;
    case FormActivityParams::FieldType::kHidden:
      return kFieldTypeHidden;
    case FormActivityParams::FieldType::kImage:
      return kFieldTypeImage;
    case FormActivityParams::FieldType::kMonth:
      return kFieldTypeMonth;
    case FormActivityParams::FieldType::kNumber:
      return kFieldTypeNumber;
    case FormActivityParams::FieldType::kObfuscated:
      return kFieldTypePassword;
    case FormActivityParams::FieldType::kRadio:
      return kFieldTypeRadio;
    case FormActivityParams::FieldType::kRange:
      return kFieldTypeRange;
    case FormActivityParams::FieldType::kReset:
      return kFieldTypeReset;
    case FormActivityParams::FieldType::kSearch:
      return kFieldTypeSearch;
    case FormActivityParams::FieldType::kSelectOne:
      return kFieldTypeSelectOne;
    case FormActivityParams::FieldType::kSubmit:
      return kFieldTypeSubmit;
    case FormActivityParams::FieldType::kTel:
      return kFieldTypeTel;
    case FormActivityParams::FieldType::kText:
      return kFieldTypeText;
    case FormActivityParams::FieldType::kTime:
      return kFieldTypeTime;
    case FormActivityParams::FieldType::kUrl:
      return kFieldTypeUrl;
    case FormActivityParams::FieldType::kWeek:
      return kFieldTypeWeek;
    case FormActivityParams::FieldType::kUnknown:
      return kFieldTypeUnknown;
  }
}

}  // namespace

BaseFormActivityParams::BaseFormActivityParams() = default;
BaseFormActivityParams::BaseFormActivityParams(
    const BaseFormActivityParams& other) = default;
BaseFormActivityParams::~BaseFormActivityParams() = default;

FormActivityParams::FormActivityParams() = default;
FormActivityParams::FormActivityParams(const FormActivityParams& other) =
    default;
FormActivityParams::~FormActivityParams() = default;

FormRemovalParams::FormRemovalParams() = default;
FormRemovalParams::FormRemovalParams(const FormRemovalParams& other) = default;
FormRemovalParams::~FormRemovalParams() = default;

bool BaseFormActivityParams::FromMessage(const web::ScriptMessage& message,
                                         const base::DictValue** message_body,
                                         BaseFormActivityParams* params) {
  if (!message.legacy_body() || !message.legacy_body()->is_dict()) {
    // Ignore invalid message.
    return false;
  }

  const auto& message_body_dict = message.legacy_body()->GetDict();
  *message_body = &message_body_dict;
  const std::string* frame_id = message_body_dict.FindString("frameID");
  if (!frame_id) {
    return false;
  }

  params->frame_id = *frame_id;
  params->is_main_frame = message.is_main_frame();

  return true;
}

bool BaseFormActivityParams::operator==(const BaseFormActivityParams&) const =
    default;

std::ostream& operator<<(std::ostream& os,
                         const BaseFormActivityParams& params) {
  os << "frame_id: " << params.frame_id;
  os << ", is_main_frame: " << params.is_main_frame;
  return os;
}

bool FormActivityParams::FromMessage(const web::ScriptMessage& message,
                                     FormActivityParams* params) {
  const base::DictValue* message_body = nullptr;
  if (!BaseFormActivityParams::FromMessage(message, &message_body, params)) {
    return false;
  }

  const std::string* form_name = message_body->FindString("formName");
  const std::string* form_renderer_id =
      message_body->FindString("formRendererID");
  const std::string* field_identifier =
      message_body->FindString("fieldIdentifier");
  const std::string* field_renderer_id =
      message_body->FindString("fieldRendererID");
  const std::string* field_type = message_body->FindString("fieldType");
  const std::string* type = message_body->FindString("type");
  const std::string* value = message_body->FindString("value");

  if (!form_name || !form_renderer_id) {
    params->input_missing = true;
  }

  if (form_name) {
    params->form_name = *form_name;
  }

  if (form_renderer_id) {
    // Parse the form renderer id.
    // Fallback to 0 if invalid or no form id provided, which is interpreted in
    // Autofill as the field not being owned by a form element.
    base::StringToUint(*form_renderer_id, &params->form_renderer_id.value());
  }

  std::optional<bool> has_user_gesture =
      message_body->FindBool("hasUserGesture");
  if (!field_identifier || !field_renderer_id || !field_type || !type ||
      !value || !has_user_gesture) {
    params->input_missing = true;
  }

  if (field_identifier) {
    params->field_identifier = *field_identifier;
  }
  if (field_renderer_id) {
    base::StringToUint(*field_renderer_id, &params->field_renderer_id.value());
  }
  if (field_type) {
    params->field_type = StringToFieldType(*field_type);
  }
  if (type) {
    params->type = StringToActivityType(*type);
  }
  if (value) {
    params->value = *value;
  }
  if (has_user_gesture) {
    params->has_user_gesture = *has_user_gesture;
  }

  return true;
}

FormActivityParams::ActivityType FormActivityParams::StringToActivityType(
    std::string_view type) {
  if (type == kActivityTypeBlur) {
    return ActivityType::kBlur;
  }
  if (type == kActivityTypeChange) {
    return ActivityType::kChange;
  }
  if (type == kActivityTypeFocus) {
    return ActivityType::kFocus;
  }
  if (type == kActivityTypeFormChanged) {
    return ActivityType::kFormChanged;
  }
  if (type == kActivityTypeInput) {
    return ActivityType::kInput;
  }
  if (type == kActivityTypeKeyUp) {
    return ActivityType::kKeyUp;
  }
  return ActivityType::kUnknown;
}

const char* FormActivityParams::ActivityTypeToString(ActivityType type) {
  return ToString(type);
}

FormActivityParams::FieldType FormActivityParams::StringToFieldType(
    std::string_view field_type) {
  if (field_type == kFieldTypeButton) {
    return FieldType::kButton;
  }
  if (field_type == kFieldTypeCheckbox) {
    return FieldType::kCheckbox;
  }
  if (field_type == kFieldTypeColor) {
    return FieldType::kColor;
  }
  if (field_type == kFieldTypeContentEditable) {
    return FieldType::kContentEditable;
  }
  if (field_type == kFieldTypeDate) {
    return FieldType::kDate;
  }
  if (field_type == kFieldTypeDateTimeLocal) {
    return FieldType::kDateTimeLocal;
  }
  if (field_type == kFieldTypeEmail) {
    return FieldType::kEmail;
  }
  if (field_type == kFieldTypeFile) {
    return FieldType::kFile;
  }
  if (field_type == kFieldTypeHidden) {
    return FieldType::kHidden;
  }
  if (field_type == kFieldTypeImage) {
    return FieldType::kImage;
  }
  if (field_type == kFieldTypeMonth) {
    return FieldType::kMonth;
  }
  if (field_type == kFieldTypeNumber) {
    return FieldType::kNumber;
  }
  if (field_type == kFieldTypePassword) {
    return FieldType::kObfuscated;
  }
  if (field_type == kFieldTypeRadio) {
    return FieldType::kRadio;
  }
  if (field_type == kFieldTypeRange) {
    return FieldType::kRange;
  }
  if (field_type == kFieldTypeReset) {
    return FieldType::kReset;
  }
  if (field_type == kFieldTypeSearch) {
    return FieldType::kSearch;
  }
  if (field_type == kFieldTypeSelectOne) {
    return FieldType::kSelectOne;
  }
  if (field_type == kFieldTypeSubmit) {
    return FieldType::kSubmit;
  }
  if (field_type == kFieldTypeTel) {
    return FieldType::kTel;
  }
  if (field_type == kFieldTypeText) {
    return FieldType::kText;
  }
  if (field_type == kFieldTypeTime) {
    return FieldType::kTime;
  }
  if (field_type == kFieldTypeUrl) {
    return FieldType::kUrl;
  }
  if (field_type == kFieldTypeWeek) {
    return FieldType::kWeek;
  }
  return FieldType::kUnknown;
}

const char* FormActivityParams::FieldTypeToString(FieldType field_type) {
  return ToString(field_type);
}

bool FormActivityParams::operator==(const FormActivityParams& params) const {
  return BaseFormActivityParams::operator==(params) &&
         (form_name == params.form_name) &&
         (form_renderer_id == params.form_renderer_id) &&
         (field_identifier == params.field_identifier) &&
         (field_renderer_id == params.field_renderer_id) &&
         (field_type == params.field_type) && (value == params.value) &&
         (type == params.type) && (has_user_gesture == params.has_user_gesture);
}

std::ostream& operator<<(std::ostream& os, const FormActivityParams& params) {
  os << static_cast<const BaseFormActivityParams&>(params);
  os << ", form_name: " << params.form_name;
  os << ", form_renderer_id: " << params.form_renderer_id;
  os << ", field_identifier: " << params.field_identifier;
  os << ", field_renderer_id: " << params.field_renderer_id;
  os << ", field_type: " << ToString(params.field_type);
  os << ", value: " << params.value;
  os << ", type: " << ToString(params.type);
  os << ", has_user_gesture: " << params.has_user_gesture;
  return os;
}

bool FormRemovalParams::FromMessage(const web::ScriptMessage& message,
                                    FormRemovalParams* params) {
  const base::DictValue* message_body = nullptr;
  if (!BaseFormActivityParams::FromMessage(message, &message_body, params)) {
    return false;
  }

  // Parse array of form id's.
  if (const std::string* removed_form_ids =
          message_body->FindString("removedFormIDs")) {
    if (const auto extracted_form_ids =
            ExtractIDs<FormRendererId>(SysUTF8ToNSString(*removed_form_ids))) {
      params->removed_forms = std::move(*extracted_form_ids);
    }
  }

  // Parse array of field id's.
  if (const std::string* removed_field_ids =
          message_body->FindString("removedFieldIDs")) {
    if (const auto extracted_field_ids = ExtractIDs<FieldRendererId>(
            SysUTF8ToNSString(*removed_field_ids))) {
      params->removed_unowned_fields = *extracted_field_ids;
    }
  }

  // Params are valid if there are removed forms and/or removed unowned fields.
  return !params->removed_forms.empty() ||
         !params->removed_unowned_fields.empty();
}

}  // namespace autofill