// Copyright 2024 The Dawn & Tint Authors
//
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// 1. Redistributions of source code must retain the above copyright notice, this
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// GEN_BUILD:CONDITION(tint_build_is_linux || tint_build_is_mac)

#include <unistd.h>

#include <cstring>

#include "src/tint/utils/text/styled_text.h"
#include "src/tint/utils/text/styled_text_printer.h"
#include "src/tint/utils/text/styled_text_theme.h"
#include "src/tint/utils/text/text_style.h"

namespace tint {
namespace {

bool SupportsANSIEscape(FILE* f) {
    if (!isatty(fileno(f))) {
        return false;
    }

    const char* cterm = getenv("TERM");
    if (cterm == nullptr) {
        return false;
    }

    std::string term = getenv("TERM");
    if (term != "cygwin" && term != "linux" && term != "rxvt-unicode-256color" &&
        term != "rxvt-unicode" && term != "screen-256color" && term != "screen" &&
        term != "tmux-256color" && term != "tmux" && term != "xterm-256color" &&
        term != "xterm-color" && term != "xterm") {
        return false;
    }

    return true;
}

}  // namespace

std::unique_ptr<StyledTextPrinter> StyledTextPrinter::Create(FILE* out,
                                                             const StyledTextTheme& theme) {
    if (SupportsANSIEscape(out)) {
        return CreateANSI(out, theme);
    }
    return CreatePlain(out);
}

}  // namespace tint