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// Copyright 2022 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef COMPONENTS_SEGMENTATION_PLATFORM_PUBLIC_INPUT_CONTEXT_H_
#define COMPONENTS_SEGMENTATION_PLATFORM_PUBLIC_INPUT_CONTEXT_H_
#include <optional>
#include <set>
#include <string_view>
#include "base/containers/flat_map.h"
#include "base/functional/callback_forward.h"
#include "base/memory/ref_counted.h"
#include "components/segmentation_platform/public/types/processed_value.h"
namespace base {
class Value;
}
namespace segmentation_platform {
// Input provided for segment selection, based on the current state of the
// browser.
struct InputContext : base::RefCounted<InputContext> {
public:
InputContext();
InputContext(const InputContext&) = delete;
InputContext& operator=(const InputContext&) = delete;
// A list of params that can be used as input either directly to the model, or
// to SQL queries, or custom input delegates. The exact mechanism and
// semantics is still under construction.
base::flat_map<std::string, processing::ProcessedValue> metadata_args;
// Returns the arg value from `metadata_args`.
std::optional<processing::ProcessedValue> GetMetadataArgument(
std::string_view arg_name) const;
base::Value ToDebugValue() const;
private:
friend class base::RefCounted<InputContext>;
~InputContext();
};
// For logging and debug purposes.
std::ostream& operator<<(std::ostream& out, const InputContext& value);
using InputContextKeysCallback =
base::OnceCallback<void(std::set<std::string>)>;
} // namespace segmentation_platform
#endif // COMPONENTS_SEGMENTATION_PLATFORM_PUBLIC_INPUT_CONTEXT_H_
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