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#ifndef SRC_TINT_FUZZERS_TINT_AST_FUZZER_CLI_H_
#define SRC_TINT_FUZZERS_TINT_AST_FUZZER_CLI_H_

#include <cstdint>

namespace tint::fuzzers::ast_fuzzer {

/// The backend this fuzzer will test.
enum class FuzzingTarget {
    kNone = 0,
    kHlsl = 1 << 0,
    kMsl = 1 << 1,
    kSpv = 1 << 2,
    kWgsl = 1 << 3,
    kAll = kHlsl | kMsl | kSpv | kWgsl
};

inline FuzzingTarget operator|(FuzzingTarget a, FuzzingTarget b) {
    return static_cast<FuzzingTarget>(static_cast<int>(a) | static_cast<int>(b));
}

inline FuzzingTarget operator&(FuzzingTarget a, FuzzingTarget b) {
    return static_cast<FuzzingTarget>(static_cast<int>(a) & static_cast<int>(b));
}

/// CLI parameters accepted by the fuzzer. Type -tint_help in the CLI to see the
/// help message
struct CliParams {
    /// Whether to use all mutation finders or only a randomly selected subset of
    /// them.
    bool enable_all_mutations = false;

    /// The maximum number of mutations applied during a single mutation session
    /// (i.e. a call to `ast_fuzzer::Mutate` function).
    uint32_t mutation_batch_size = 5;

    /// Compiler backends we want to fuzz.
    FuzzingTarget fuzzing_target = FuzzingTarget::kAll;
};

/// @brief Parses CLI parameters.
///
/// This function will exit the process with non-zero return code if some
/// parameters are invalid. This function will remove recognized parameters from
/// `argv` and adjust `argc` accordingly.
///
/// @param argc - the total number of parameters.
/// @param argv - array of all CLI parameters.
/// @return parsed parameters.
CliParams ParseCliParams(int* argc, char** argv);

}  // namespace tint::fuzzers::ast_fuzzer

#endif  // SRC_TINT_FUZZERS_TINT_AST_FUZZER_CLI_H_