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

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

#include "cmFileSet.h"

#include <string>

#include <unordered_map>

#include <utility>

#include <vector>

#include <cm/optional>

#include <cmext/algorithm>

#include <cmext/string_view>

#include "cmList.h"

#include "cmListFileCache.h"

#include "cmMakefile.h"

#include "cmMessageType.h"

#include "cmPolicies.h"

#include "cmStringAlgorithms.h"

#include "cmTarget.h"

namespace Metadata = cm::FileSetMetadata;

cmFileSet::cmFileSet(cmMakefile* makefile, cmTarget* target, std::string name,

                     std::string type, Metadata::Visibility visibility)

  : Makefile(makefile)

  , Target(target)

  , Name(std::move(name))

  , Type(std::move(type))

  , Visibility(visibility)

{

}

void cmFileSet::CopyEntries(cmFileSet const* fs)

{

  cm::append(this->DirectoryEntries, fs->DirectoryEntries);

  cm::append(this->FileEntries, fs->FileEntries);

}

void cmFileSet::ClearDirectoryEntries()

{

  this->DirectoryEntries.clear();

}

void cmFileSet::AddDirectoryEntry(BT<std::string> directories)

{

  this->DirectoryEntries.push_back(std::move(directories));

}

void cmFileSet::ClearFileEntries()

{

  this->FileEntries.clear();

}

void cmFileSet::AddFileEntry(BT<std::string> files)

{

  this->FileEntries.push_back(std::move(files));

}

namespace {

enum class ReadOnlyCondition

{

  All,

  Imported,

  NonImported,

};

struct ReadOnlyProperty

{

  ReadOnlyProperty(ReadOnlyCondition cond)

    : Condition{ cond }

  {

  }

  // ReadOnlyProperty(ReadOnlyCondition cond, cmPolicies::PolicyID id)

  //   : Condition{ cond }

  //   , Policy{ id }

  // {

  // }

  ReadOnlyCondition Condition;

  cm::optional<cmPolicies::PolicyID> Policy;

  std::string message(std::string const& prop, cmTarget* target,

                      cmFileSet* fileSet) const

  {

    std::string msg;

    if (this->Condition == ReadOnlyCondition::All) {

      msg = cmStrCat(" property is read-only for the file set \"",

                     fileSet->GetName(), " of the target \"");

    } else if (this->Condition == ReadOnlyCondition::Imported) {

      msg = " property can't be set on a file set attached to the imported "

            "target \"";

    } else if (this->Condition == ReadOnlyCondition::NonImported) {

      msg =

        " property can't be set on a file set attached to the non-imported "

        "target \"";

    }

    return cmStrCat(prop, msg, target->GetName(), "\"\n");

  }

  bool isReadOnly(std::string const& prop, cmMakefile* context,

                  cmTarget* target, cmFileSet* fileSet) const

  {

    auto importedTarget = target->IsImported();

    bool matchingCondition = true;

    if ((!importedTarget && this->Condition == ReadOnlyCondition::Imported) ||

        (importedTarget &&

         this->Condition == ReadOnlyCondition::NonImported)) {

      matchingCondition = false;

    }

    if (!matchingCondition) {

      // Not read-only in this scenario

      return false;

    }

    bool readOnly = true;

    if (!this->Policy) {

      // No policy associated, so is always read-only

      context->IssueMessage(MessageType::FATAL_ERROR,

                            this->message(prop, target, fileSet));

    }

    return readOnly;

  }

};

bool IsSettableProperty(cmMakefile* context, cmTarget* target,

                        cmFileSet* fileSet, std::string const& prop)

{

  using ROC = ReadOnlyCondition;

  static std::unordered_map<std::string, ReadOnlyProperty> const readOnlyProps{

    { "TYPE", { ROC::All } }, { "SCOPE", { ROC::All } }

  };

  auto it = readOnlyProps.find(prop);

  if (it != readOnlyProps.end()) {

    return !(it->second.isReadOnly(prop, context, target, fileSet));

  }

  return true;

}

cm::string_view const BASE_DIRS = "BASE_DIRS"_s;

cm::string_view const SOURCES = "SOURCES"_s;

cm::string_view const INTERFACE_SOURCES = "INTERFACE_SOURCES"_s;

cm::string_view const COMPILE_DEFINITIONS = "COMPILE_DEFINITIONS"_s;

cm::string_view const COMPILE_OPTIONS = "COMPILE_OPTIONS"_s;

cm::string_view const INCLUDE_DIRECTORIES = "INCLUDE_DIRECTORIES"_s;

}

void cmFileSet::SetProperty(std::string const& prop, cmValue value)

{

  if (!IsSettableProperty(this->Makefile, this->Target, this, prop)) {

    return;

  }

  if (prop == BASE_DIRS) {

    this->ClearDirectoryEntries();

    if (value) {

      cmListFileBacktrace lfbt = this->GetMakefile()->GetBacktrace();

      this->AddDirectoryEntry(BT<std::string>{ value, lfbt });

    }

  } else if (prop == SOURCES) {

    if (!this->IsForSelf()) {

      return;

    }

    this->ClearFileEntries();

    if (value) {

      cmListFileBacktrace lfbt = this->GetMakefile()->GetBacktrace();

      this->AddFileEntry(BT<std::string>{ value, lfbt });

    }

  } else if (prop == INTERFACE_SOURCES) {

    if (!this->IsForInterface()) {

      return;

    }

    this->ClearFileEntries();

    if (value) {

      cmListFileBacktrace lfbt = this->GetMakefile()->GetBacktrace();

      this->AddFileEntry(BT<std::string>{ value, lfbt });

    }

  } else if (prop == INCLUDE_DIRECTORIES) {

    this->IncludeDirectories.clear();

    if (value) {

      cmListFileBacktrace lfbt = this->GetMakefile()->GetBacktrace();

      this->IncludeDirectories.emplace_back(value, lfbt);

    }

  } else if (prop == COMPILE_OPTIONS) {

    this->CompileOptions.clear();

    if (value) {

      cmListFileBacktrace lfbt = this->GetMakefile()->GetBacktrace();

      this->CompileOptions.emplace_back(value, lfbt);

    }

  } else if (prop == COMPILE_DEFINITIONS) {

    this->CompileDefinitions.clear();

    if (value) {

      cmListFileBacktrace lfbt = this->GetMakefile()->GetBacktrace();

      this->CompileDefinitions.emplace_back(value, lfbt);

    }

  } else {

    this->Properties.SetProperty(prop, value);

  }

}

void cmFileSet::AppendProperty(std::string const& prop,

                               std::string const& value, bool asString)

{

  if (!IsSettableProperty(this->Makefile, this->Target, this, prop)) {

    return;

  }

  if (prop == BASE_DIRS) {

    if (!value.empty()) {

      cmListFileBacktrace lfbt = this->GetMakefile()->GetBacktrace();

      this->AddDirectoryEntry(BT<std::string>{ value, lfbt });

    }

  } else if (prop == SOURCES) {

    if (!this->IsForSelf()) {

      return;

    }

    if (!value.empty()) {

      cmListFileBacktrace lfbt = this->GetMakefile()->GetBacktrace();

      this->AddFileEntry(BT<std::string>{ value, lfbt });

    }

  } else if (prop == INTERFACE_SOURCES) {

    if (!this->IsForInterface()) {

      return;

    }

    if (!value.empty()) {

      cmListFileBacktrace lfbt = this->GetMakefile()->GetBacktrace();

      this->AddFileEntry(BT<std::string>{ value, lfbt });

    }

  } else if (prop == INCLUDE_DIRECTORIES) {

    if (!value.empty()) {

      cmListFileBacktrace lfbt = this->GetMakefile()->GetBacktrace();

      this->IncludeDirectories.emplace_back(value, lfbt);

    }

  } else if (prop == COMPILE_OPTIONS) {

    if (!value.empty()) {

      cmListFileBacktrace lfbt = this->GetMakefile()->GetBacktrace();

      this->CompileOptions.emplace_back(value, lfbt);

    }

  } else if (prop == COMPILE_DEFINITIONS) {

    if (!value.empty()) {

      cmListFileBacktrace lfbt = this->GetMakefile()->GetBacktrace();

      this->CompileDefinitions.emplace_back(value, lfbt);

    }

  } else {

    this->Properties.AppendProperty(prop, value, asString);

  }

}

cmValue cmFileSet::GetProperty(std::string const& prop) const

{

  // Check for the properties with backtraces.

  if (prop == BASE_DIRS) {

    static std::string output;

    output = cmList::to_string(this->GetDirectoryEntries());

    return cmValue(output);

  }

  if (prop == SOURCES) {

    if (!this->IsForSelf() || this->GetFileEntries().empty()) {

      return nullptr;

    }

    static std::string output;

    output = cmList::to_string(this->GetFileEntries());

    return cmValue(output);

  }

  if (prop == INTERFACE_SOURCES) {

    if (!this->IsForInterface() || this->GetFileEntries().empty()) {

      return nullptr;

    }

    static std::string output;

    output = cmList::to_string(this->GetFileEntries());

    return cmValue(output);

  }

  if (prop == INCLUDE_DIRECTORIES) {

    if (this->IncludeDirectories.empty()) {

      return nullptr;

    }

    static std::string output;

    output = cmList::to_string(this->IncludeDirectories);

    return cmValue(output);

  }

  if (prop == COMPILE_OPTIONS) {

    if (this->CompileOptions.empty()) {

      return nullptr;

    }

    static std::string output;

    output = cmList::to_string(this->CompileOptions);

    return cmValue(output);

  }

  if (prop == COMPILE_DEFINITIONS) {

    if (this->CompileDefinitions.empty()) {

      return nullptr;

    }

    static std::string output;

    output = cmList::to_string(this->CompileDefinitions);

    return cmValue(output);

  }

  if (prop == "TYPE"_s) {

    return cmValue{ this->GetType() };

  }

  if (prop == "SCOPE"_s) {

    static std::string scope =

      std::string{ Metadata::VisibilityToName(this->GetVisibility()) };

    return cmValue{ scope };

  }

  return this->Properties.GetPropertyValue(prop);

}