/* Distributed under the OSI-approved BSD 3-Clause License.  See accompanying

   file LICENSE.rst or https://cmake.org/licensing for details.  */

#include "cmMessenger.h"

#include "cmDocumentationFormatter.h"

#include "cmMessageMetadata.h"

#include "cmMessageType.h"

#include "cmStdIoTerminal.h"

#include "cmStringAlgorithms.h"

#include "cmSystemTools.h"

#if !defined(CMAKE_BOOTSTRAP)

#  include "cmsys/SystemInformation.hxx"

#  include "cmSarifLog.h"

#endif

#include <sstream>

#include <utility>

#ifdef CMake_ENABLE_DEBUGGER

#  include "cmDebuggerAdapter.h"

#endif

namespace {

char const* getMessageTypeStr(MessageType t)

{

  switch (t) {

    case MessageType::FATAL_ERROR:

      return "Error";

    case MessageType::INTERNAL_ERROR:

      return "Internal Error (please report a bug)";

    case MessageType::LOG:

      return "Debug Log";

    case MessageType::DEPRECATION_ERROR:

      return "Deprecation Error";

    case MessageType::DEPRECATION_WARNING:

      return "Deprecation Warning";

    case MessageType::AUTHOR_WARNING:

      return "Warning (dev)";

    case MessageType::AUTHOR_ERROR:

      return "Error (dev)";

    default:

      break;

  }

  return "Warning";

}

cm::StdIo::TermAttr getMessageColor(MessageType t)

{

  switch (t) {

    case MessageType::INTERNAL_ERROR:

    case MessageType::FATAL_ERROR:

    case MessageType::AUTHOR_ERROR:

      return cm::StdIo::TermAttr::ForegroundRed;

    case MessageType::AUTHOR_WARNING:

    case MessageType::WARNING:

      return cm::StdIo::TermAttr::ForegroundYellow;

    default:

      return cm::StdIo::TermAttr::Normal;

  }

}

void printMessageText(std::ostream& msg, std::string const& text)

{

  msg << ":\n";

  cmDocumentationFormatter formatter;

  formatter.SetIndent(2u);

  formatter.PrintFormatted(msg, text);

}

void displayMessage(MessageType t, std::ostringstream& msg)

{

  // Add a note about warning suppression.

  if (t == MessageType::AUTHOR_WARNING) {

    msg << "This warning is for project developers.  Use -Wno-dev to suppress "

           "it.";

  } else if (t == MessageType::AUTHOR_ERROR) {

    msg << "This error is for project developers. Use -Wno-error=dev to "

           "suppress it.";

  }

  // Add a terminating blank line.

  msg << '\n';

#if !defined(CMAKE_BOOTSTRAP)

  // Add a C++ stack trace to internal errors.

  if (t == MessageType::INTERNAL_ERROR) {

    std::string stack = cmsys::SystemInformation::GetProgramStack(0, 0);

    if (!stack.empty()) {

      if (cmHasLiteralPrefix(stack, "WARNING:")) {

        stack = "Note:" + stack.substr(8);

      }

      msg << stack << '\n';

    }

  }

#endif

  // Output the message.

  cmMessageMetadata md;

  md.attrs = getMessageColor(t);

  if (t == MessageType::FATAL_ERROR || t == MessageType::INTERNAL_ERROR ||

      t == MessageType::DEPRECATION_ERROR || t == MessageType::AUTHOR_ERROR) {

    cmSystemTools::SetErrorOccurred();

    md.title = "Error";

  } else {

    md.title = "Warning";

  }

  cmSystemTools::Message(msg.str(), md);

}

void PrintCallStack(std::ostream& out, cmListFileBacktrace bt,

                    cm::optional<std::string> const& topSource)

{

  // The call stack exists only if we have at least two calls on top

  // of the bottom.

  if (bt.Empty()) {

    return;

  }

  std::string lastFilePath = bt.Top().FilePath;

  bt = bt.Pop();

  if (bt.Empty()) {

    return;

  }

  bool first = true;

  for (; !bt.Empty(); bt = bt.Pop()) {

    cmListFileContext lfc = bt.Top();

    if (lfc.Name.empty() &&

        lfc.Line != cmListFileContext::DeferPlaceholderLine &&

        lfc.FilePath == lastFilePath) {

      // An entry with no function name is frequently preceded (in the stack)

      // by a more specific entry.  When this happens (as verified by the

      // preceding entry referencing the same file path), skip the less

      // specific entry, as we have already printed the more specific one.

      continue;

    }

    if (first) {

      first = false;

      out << "Call Stack (most recent call first):\n";

    }

    lastFilePath = lfc.FilePath;

    if (topSource) {

      lfc.FilePath = cmSystemTools::RelativeIfUnder(*topSource, lfc.FilePath);

    }

    out << "  " << lfc << '\n';

  }

}

} // anonymous namespace

MessageType cmMessenger::ConvertMessageType(MessageType t) const

{

  if (t == MessageType::AUTHOR_WARNING || t == MessageType::AUTHOR_ERROR) {

    if (this->GetDevWarningsAsErrors()) {

      return MessageType::AUTHOR_ERROR;

    }

    return MessageType::AUTHOR_WARNING;

  }

  if (t == MessageType::DEPRECATION_WARNING ||

      t == MessageType::DEPRECATION_ERROR) {

    if (this->GetDeprecatedWarningsAsErrors()) {

      return MessageType::DEPRECATION_ERROR;

    }

    return MessageType::DEPRECATION_WARNING;

  }

  return t;

}

bool cmMessenger::IsMessageTypeVisible(MessageType t) const

{

  if (t == MessageType::DEPRECATION_ERROR) {

    return this->GetDeprecatedWarningsAsErrors();

  }

  if (t == MessageType::DEPRECATION_WARNING) {

    return !this->GetSuppressDeprecatedWarnings();

  }

  if (t == MessageType::AUTHOR_ERROR) {

    return this->GetDevWarningsAsErrors();

  }

  if (t == MessageType::AUTHOR_WARNING) {

    return !this->GetSuppressDevWarnings();

  }

  return true;

}

void cmMessenger::IssueMessage(MessageType t, std::string const& text,

                               cmListFileBacktrace const& backtrace) const

{

  bool force = false;

  // override the message type, if needed, for warnings and errors

  MessageType override = this->ConvertMessageType(t);

  if (override != t) {

    t = override;

    force = true;

  }

  if (force || this->IsMessageTypeVisible(t)) {

    this->DisplayMessage(t, text, backtrace);

  }

}

void cmMessenger::DisplayMessage(MessageType t, std::string const& text,

                                 cmListFileBacktrace const& backtrace) const

{

  std::ostringstream msg;

  // Print the message preamble.

  msg << "CMake " << getMessageTypeStr(t);

  // Add the immediate context.

  this->PrintBacktraceTitle(msg, backtrace);

  printMessageText(msg, text);

  // Add the rest of the context.

  PrintCallStack(msg, backtrace, this->TopSource);

  displayMessage(t, msg);

#ifndef CMAKE_BOOTSTRAP

  // Add message to SARIF logs

  this->SarifLog.LogMessage(t, text, backtrace);

#endif

#ifdef CMake_ENABLE_DEBUGGER

  if (DebuggerAdapter) {

    DebuggerAdapter->OnMessageOutput(t, msg.str());

  }

#endif

}

void cmMessenger::PrintBacktraceTitle(std::ostream& out,

                                      cmListFileBacktrace const& bt) const

{

  // The title exists only if we have a call on top of the bottom.

  if (bt.Empty()) {

    return;

  }

  cmListFileContext lfc = bt.Top();

  if (this->TopSource) {

    lfc.FilePath =

      cmSystemTools::RelativeIfUnder(*this->TopSource, lfc.FilePath);

  }

  out << (lfc.Line ? " at " : " in ") << lfc;

}

void cmMessenger::SetTopSource(cm::optional<std::string> topSource)

{

  this->TopSource = std::move(topSource);

}