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#include "src/tint/lang/spirv/writer/writer.h"

#include <memory>
#include <utility>

#include "src/tint/lang/spirv/writer/ast_printer/ast_printer.h"
#include "src/tint/lang/spirv/writer/common/option_helpers.h"
#include "src/tint/lang/spirv/writer/printer/printer.h"
#include "src/tint/lang/spirv/writer/raise/raise.h"

// Included by 'ast_printer.h', included again here for './tools/run gen' track the dependency.
#include "spirv/unified1/spirv.h"

namespace tint::spirv::writer {

Result<Output> Generate(core::ir::Module& ir, const Options& options) {
    bool zero_initialize_workgroup_memory =
        !options.disable_workgroup_init && options.use_zero_initialize_workgroup_memory_extension;

    {
        auto res = ValidateBindingOptions(options);
        if (res != Success) {
            return res.Failure();
        }
    }

    Output output;

    // Raise from core-dialect to SPIR-V-dialect.
    if (auto res = Raise(ir, options); res != Success) {
        return std::move(res.Failure());
    }

    // Generate the SPIR-V code.
    auto spirv = Print(ir, zero_initialize_workgroup_memory);
    if (spirv != Success) {
        return std::move(spirv.Failure());
    }
    output.spirv = std::move(spirv.Get());

    return output;
}

Result<Output> Generate(const Program& program, const Options& options) {
    if (!program.IsValid()) {
        return Failure{program.Diagnostics()};
    }

    bool zero_initialize_workgroup_memory =
        !options.disable_workgroup_init && options.use_zero_initialize_workgroup_memory_extension;

    {
        auto res = ValidateBindingOptions(options);
        if (res != Success) {
            return res.Failure();
        }
    }

    Output output;

    // Sanitize the program.
    auto sanitized_result = Sanitize(program, options);
    if (!sanitized_result.program.IsValid()) {
        return Failure{sanitized_result.program.Diagnostics()};
    }

    // Generate the SPIR-V code.
    auto impl =
        std::make_unique<ASTPrinter>(sanitized_result.program, zero_initialize_workgroup_memory,
                                     options.experimental_require_subgroup_uniform_control_flow);
    if (!impl->Generate()) {
        return Failure{impl->Diagnostics()};
    }
    output.spirv = std::move(impl->Result());

    return output;
}

}  // namespace tint::spirv::writer