#include <utility>

#include "SpecBase.hpp"
#include "DNAMP2/DNAMP2.hpp"

#include "DNAMP2/MLVL.hpp"
#include "DNAMP2/STRG.hpp"
#include "DNAMP2/AGSC.hpp"
#include "DNAMP2/PATH.hpp"
#include "DNAMP2/MAPA.hpp"
#include "DNAMP1/CSNG.hpp"
#include "DNACommon/MAPU.hpp"
#include "DNACommon/PATH.hpp"
#include "DNACommon/TXTR.hpp"
#include "DNACommon/MetaforceVersionInfo.hpp"

#include "hecl/ClientProcess.hpp"
#include "hecl/Blender/Connection.hpp"
#include "hecl/MultiProgressPrinter.hpp"

#include "Runtime/RetroTypes.hpp"
#include "nod/nod.hpp"

namespace DataSpec {

using namespace std::literals;

static logvisor::Module Log("DataSpec::SpecMP2");
extern hecl::Database::DataSpecEntry SpecEntMP2;
extern hecl::Database::DataSpecEntry SpecEntMP2ORIG;

struct TextureCache {
  static void Generate(PAKRouter<DNAMP2::PAKBridge>& pakRouter, hecl::Database::Project& project,
                       const hecl::ProjectPath& pakPath) {
    hecl::ProjectPath texturePath(pakPath, "texture_cache.yaml");
    hecl::ProjectPath catalogPath(pakPath, "!catalog.yaml");
    texturePath.makeDirChain(false);

    if (const auto fp = hecl::FopenUnique(catalogPath.getAbsolutePath().data(), "a")) {
      fmt::print(fp.get(), FMT_STRING("TextureCache: {}\n"), texturePath.getRelativePath());
    }

    Log.report(logvisor::Level::Info, FMT_STRING("Gathering Texture metadata (this can take up to 10 seconds)..."));
    std::unordered_map<UniqueID32, TXTR::Meta> metaMap;

    pakRouter.enumerateResources([&](const DNAMP2::PAK::Entry* ent) {
      if (ent->type == FOURCC('TXTR') && metaMap.find(ent->id) == metaMap.end()) {
        PAKEntryReadStream rs = pakRouter.beginReadStreamForId(ent->id);
        metaMap[ent->id] = TXTR::GetMetaData(rs);
      }
      return true;
    });

    athena::io::YAMLDocWriter yamlW("MP2TextureCache");
    for (const auto& pair : metaMap) {
      hecl::ProjectPath path = pakRouter.getWorking(pair.first);
      auto rec = yamlW.enterSubRecord(path.getRelativePath());
      pair.second.write(yamlW);
    }

    athena::io::FileWriter fileW(texturePath.getAbsolutePath());
    yamlW.finish(&fileW);
    Log.report(logvisor::Level::Info, FMT_STRING("Done..."));
  }

  static void Cook(const hecl::ProjectPath& inPath, const hecl::ProjectPath& outPath) {
    hecl::Database::Project& project = inPath.getProject();
    athena::io::YAMLDocReader r;
    athena::io::FileReader fr(inPath.getAbsolutePath());
    if (!fr.isOpen() || !r.parse(&fr))
      return;

    std::vector<std::pair<UniqueID32, TXTR::Meta>> metaPairs;
    metaPairs.reserve(r.getRootNode()->m_mapChildren.size());
    for (const auto& node : r.getRootNode()->m_mapChildren) {
      hecl::ProjectPath projectPath(project, node.first);
      auto rec = r.enterSubRecord(node.first.c_str());
      TXTR::Meta meta;
      meta.read(r);
      metaPairs.emplace_back(projectPath.parsedHash32(), meta);
    }

    std::sort(metaPairs.begin(), metaPairs.end(),
              [](const auto& a, const auto& b) -> bool { return a.first < b.first; });

    athena::io::FileWriter w(outPath.getAbsolutePath());
    w.writeUint32Big(metaPairs.size());
    for (const auto& pair : metaPairs) {
      pair.first.write(w);
      pair.second.write(w);
    }
  }
};

struct SpecMP2 : SpecBase {
  bool checkStandaloneID(const char* id) const override {
    if (!memcmp(id, "G2M", 3))
      return true;
    return false;
  }

  std::vector<const nod::Node*> m_nonPaks;
  std::vector<DNAMP2::PAKBridge> m_paks;
  std::map<std::string, DNAMP2::PAKBridge*, hecl::CaseInsensitiveCompare> m_orderedPaks;

  hecl::ProjectPath m_workPath;
  hecl::ProjectPath m_cookPath;
  PAKRouter<DNAMP2::PAKBridge> m_pakRouter;

  SpecMP2(const hecl::Database::DataSpecEntry* specEntry, hecl::Database::Project& project, bool pc)
  : SpecBase(specEntry, project, pc)
  , m_workPath(project.getProjectWorkingPath(), "MP2")
  , m_cookPath(project.getProjectCookedPath(SpecEntMP2), "MP2")
  , m_pakRouter(*this, m_workPath, m_cookPath) {
    m_game = EGame::MetroidPrime2;
    SpecBase::setThreadProject();
  }

  void buildPaks(nod::Node& root, const std::vector<std::string>& args, ExtractReport& rep) {
    m_nonPaks.clear();
    m_paks.clear();
    for (const nod::Node& child : root) {
      bool isPak = false;
      auto name = child.getName();
      std::string lowerName(name);
      hecl::ToLower(lowerName);
      if (name.size() > 4) {
        std::string::iterator extit = lowerName.end() - 4;
        if (std::string(extit, lowerName.end()) == ".pak") {
          /* This is a pak */
          isPak = true;
          std::string lowerBase(lowerName.begin(), extit);

          /* Needs filter */
          bool good = true;
          if (args.size()) {
            good = false;
            if (!lowerName.compare(0, 7, "metroid")) {
              char idxChar = lowerName[7];
              for (const std::string& arg : args) {
                if (arg.size() == 1 && iswdigit(arg[0]))
                  if (arg[0] == idxChar)
                    good = true;
              }
            } else
              good = true;

            if (!good) {
              for (const std::string& arg : args) {
                std::string lowerArg(arg);
                hecl::ToLower(lowerArg);
                if (!lowerArg.compare(0, lowerBase.size(), lowerBase))
                  good = true;
              }
            }
          }

          m_paks.emplace_back(child, good);
        }
      }

      if (!isPak)
        m_nonPaks.push_back(&child);
    }

    /* Sort PAKs alphabetically */
    m_orderedPaks.clear();
    for (DNAMP2::PAKBridge& dpak : m_paks)
      m_orderedPaks[std::string(dpak.getName())] = &dpak;

    /* Assemble extract report */
    for (const auto& item : m_orderedPaks) {
      if (!item.second->m_doExtract) {
        continue;
      }

      ExtractReport& childRep = rep.childOpts.emplace_back();
      childRep.name = item.first;
      childRep.desc = item.second->getLevelString();
    }
  }

  bool checkFromStandaloneDisc(nod::DiscBase& disc, const std::string& regstr,
                               const std::vector<std::string>& args, std::vector<ExtractReport>& reps) override {
    nod::IPartition* partition = disc.getDataPartition();
    std::unique_ptr<uint8_t[]> dolBuf = partition->getDOLBuf();
    const char* buildInfo =
        static_cast<char*>(memmem(dolBuf.get(), partition->getDOLSize(), "MetroidBuildInfo", 16)) + 19;
    if (buildInfo == nullptr) {
      return false;
    }

    m_version = std::string(buildInfo);
    /* Root Report */
    ExtractReport& rep = reps.emplace_back();
    rep.name = "MP2";
    rep.desc = "Metroid Prime 2 " + regstr;
    rep.desc += " (" + m_version + ")";

    /* Iterate PAKs and build level options */
    nod::Node& root = partition->getFSTRoot();
    buildPaks(root, args, rep);

    return true;
  }

  bool checkFromTrilogyDisc(nod::DiscBase& disc, const std::string& regstr,
                            const std::vector<std::string>& args, std::vector<ExtractReport>& reps) override {
    std::vector<std::string> mp2args;
    bool doExtract = false;
    if (!args.empty()) {
      /* Needs filter */
      for (const std::string& arg : args) {
        std::string lowerArg = arg;
        hecl::ToLower(lowerArg);
        if (!lowerArg.compare(0, 3, "mp2")) {
          doExtract = true;
          mp2args.reserve(args.size());
          size_t slashPos = arg.find('/');
          if (slashPos == std::string::npos)
            slashPos = arg.find('\\');
          if (slashPos != std::string::npos)
            mp2args.emplace_back(std::string(arg.begin() + slashPos + 1, arg.end()));
        }
      }
    } else
      doExtract = true;

    if (!doExtract)
      return false;

    nod::IPartition* partition = disc.getDataPartition();
    nod::Node& root = partition->getFSTRoot();
    nod::Node::DirectoryIterator dolIt = root.find("rs5mp2_p.dol");
    if (dolIt == root.end()) {
      dolIt = root.find("rs5mp2jpn_p.dol");
      if (dolIt == root.end())
        return false;
    }

    std::unique_ptr<uint8_t[]> dolBuf = dolIt->getBuf();
    const char* buildInfo = static_cast<char*>(memmem(dolBuf.get(), dolIt->size(), "MetroidBuildInfo", 16)) + 19;

    /* Root Report */
    ExtractReport& rep = reps.emplace_back();
    rep.name = "MP2";
    rep.desc = "Metroid Prime 2 " + regstr;
    if (buildInfo != nullptr) {
      m_version = std::string(buildInfo);
      rep.desc += " (" + m_version + ")";
    }

    /* Iterate PAKs and build level options */
    nod::Node::DirectoryIterator mp2It = root.find("MP2");
    if (mp2It == root.end()) {
      mp2It = root.find("MP2JPN");
      if (mp2It == root.end())
        return false;
    }
    buildPaks(*mp2It, mp2args, rep);

    return true;
  }

  bool extractFromDisc(nod::DiscBase& disc, bool force, const hecl::MultiProgressPrinter& progress) override {
    nod::ExtractionContext ctx = {force, nullptr};

    m_workPath.makeDir();

    progress.startNewLine();
    progress.print("Indexing PAKs", "", 0.0);
    m_pakRouter.build(m_paks,
                      [&progress](float factor) { progress.print("Indexing PAKs", "", factor); });
    progress.print("Indexing PAKs", "", 1.0);

    hecl::ProjectPath outPath(m_project.getProjectWorkingPath(), "out");
    outPath.makeDir();
    disc.getDataPartition()->extractSysFiles(outPath.getAbsolutePath(), ctx);
    hecl::ProjectPath mp2OutPath(outPath, "files/MP2");
    mp2OutPath.makeDirChain(true);

    progress.startNewLine();
    progress.print("MP2 Root", "", 0.0);
    int prog = 0;
    ctx.progressCB = [&prog, &progress](std::string_view name, float) {
      progress.print("MP2 Root", name, prog);
    };
    for (const nod::Node* node : m_nonPaks) {
      node->extractToDirectory(mp2OutPath.getAbsolutePath(), ctx);
      prog++;
    }
    progress.print("MP2 Root", "", 1.0);

    hecl::ClientProcess process;
    progress.startNewLine();
    for (std::pair<const std::string, DNAMP2::PAKBridge*>& pair : m_orderedPaks) {
      DNAMP2::PAKBridge& pak = *pair.second;
      if (!pak.m_doExtract)
        continue;

      auto pakName = std::string(pak.getName());
      process.addLambdaTransaction([this, &progress, &pak, pakName, force](hecl::blender::Token& btok) {
        int threadIdx = hecl::ClientProcess::GetThreadWorkerIdx();
        m_pakRouter.extractResources(pak, force, btok,
                                     [&progress, &pakName, threadIdx](const char* substr, float factor) {
                                       progress.print(pakName, substr, factor, threadIdx);
                                     });
      });
    }

    process.waitUntilComplete();

    /* Generate Texture Cache containing meta data for every texture file */
    hecl::ProjectPath noAramPath(m_project.getProjectWorkingPath(), "MP2/URDE");
    TextureCache::Generate(m_pakRouter, m_project, noAramPath);

    /* Write version data */
    hecl::ProjectPath versionPath = hecl::ProjectPath(m_project.getProjectWorkingPath(), "out/files/MP2");
    WriteVersionInfo(m_project, versionPath);
    return true;
  }

  const hecl::Database::DataSpecEntry& getOriginalSpec() const override { return SpecEntMP2; }

  const hecl::Database::DataSpecEntry& getUnmodifiedSpec() const override { return SpecEntMP2ORIG; }

  hecl::ProjectPath getWorking(class UniqueID32& id) override { return m_pakRouter.getWorking(id); }

  bool checkPathPrefix(const hecl::ProjectPath& path) const override {
    return path.getRelativePath().compare(0, 4, "MP2/") == 0;
  }

  bool validateYAMLDNAType(athena::io::IStreamReader& fp) const override {
    athena::io::YAMLDocReader reader;
    yaml_parser_set_input(reader.getParser(), (yaml_read_handler_t*)athena::io::YAMLAthenaReader, &fp);
    return reader.ClassTypeOperation([](std::string_view classType) {
      if (classType == DNAMP2::MLVL::DNAType())
        return true;
      else if (classType == DNAMP2::STRG::DNAType())
        return true;
      else if (classType == "ATBL")
        return true;
      return false;
    });
  }

  metaforce::SObjectTag buildTagFromPath(const hecl::ProjectPath& path) const override { return {}; }

  void cookMesh(const hecl::ProjectPath& out, const hecl::ProjectPath& in, BlendStream& ds, bool fast,
                hecl::blender::Token& btok, FCookProgress progress) override {}

  void cookColMesh(const hecl::ProjectPath& out, const hecl::ProjectPath& in, BlendStream& ds, bool fast,
                   hecl::blender::Token& btok, FCookProgress progress) override {}

  void cookArmature(const hecl::ProjectPath& out, const hecl::ProjectPath& in, BlendStream& ds, bool fast,
                    hecl::blender::Token& btok, FCookProgress progress) override {}

  void cookPathMesh(const hecl::ProjectPath& out, const hecl::ProjectPath& in, BlendStream& ds, bool fast,
                    hecl::blender::Token& btok, FCookProgress progress) override {
    PathMesh mesh = ds.compilePathMesh();
    ds.close();
    DNAMP2::PATH::Cook(out, in, mesh, btok);
  }

  void cookActor(const hecl::ProjectPath& out, const hecl::ProjectPath& in, BlendStream& ds, bool fast,
                 hecl::blender::Token& btok, FCookProgress progress) override {}

  void cookArea(const hecl::ProjectPath& out, const hecl::ProjectPath& in, BlendStream& ds, bool fast,
                hecl::blender::Token& btok, FCookProgress progress) override {}

  void cookWorld(const hecl::ProjectPath& out, const hecl::ProjectPath& in, BlendStream& ds, bool fast,
                 hecl::blender::Token& btok, FCookProgress progress) override {}

  void cookGuiFrame(const hecl::ProjectPath& out, const hecl::ProjectPath& in, BlendStream& ds,
                    hecl::blender::Token& btok, FCookProgress progress) override {}

  void cookYAML(const hecl::ProjectPath& out, const hecl::ProjectPath& in, athena::io::IStreamReader& fin,
                hecl::blender::Token& btok, FCookProgress progress) override {}

  void flattenDependenciesYAML(athena::io::IStreamReader& fin, std::vector<hecl::ProjectPath>& pathsOut) override {}

  void flattenDependenciesANCSYAML(athena::io::IStreamReader& fin, std::vector<hecl::ProjectPath>& pathsOut,
                                   int charIdx) override {}

  void cookAudioGroup(const hecl::ProjectPath& out, const hecl::ProjectPath& in, FCookProgress progress) override {
    DNAMP2::AGSC::Cook(in, out);
    progress("Done");
  }

  void cookSong(const hecl::ProjectPath& out, const hecl::ProjectPath& in, FCookProgress progress) override {
    DNAMP1::CSNG::Cook(in, out);
    progress("Done");
  }

  void cookMapArea(const hecl::ProjectPath& out, const hecl::ProjectPath& in, BlendStream& ds,
                   hecl::blender::Token& btok, FCookProgress progress) override {
    hecl::blender::MapArea mapa = ds.compileMapArea();
    ds.close();
    DNAMP2::MAPA::Cook(mapa, out);
    progress("Done");
  }

  void cookMapUniverse(const hecl::ProjectPath& out, const hecl::ProjectPath& in, BlendStream& ds,
                       hecl::blender::Token& btok, FCookProgress progress) override {
    hecl::blender::MapUniverse mapu = ds.compileMapUniverse();
    ds.close();
    DNAMAPU::MAPU::Cook(mapu, out);
    progress("Done");
  }
};

hecl::Database::DataSpecEntry SpecEntMP2(
    "MP2"sv, "Data specification for original Metroid Prime 2 engine"sv, ".pak"sv,
    [](hecl::Database::Project& project, hecl::Database::DataSpecTool) -> std::unique_ptr<hecl::Database::IDataSpec> {
      return std::make_unique<SpecMP2>(&SpecEntMP2, project, false);
    });

hecl::Database::DataSpecEntry SpecEntMP2PC = {
    "MP2-PC"sv, "Data specification for PC-optimized Metroid Prime 2 engine"sv, ".upak"sv,
    [](hecl::Database::Project& project,
       hecl::Database::DataSpecTool tool) -> std::unique_ptr<hecl::Database::IDataSpec> {
      if (tool != hecl::Database::DataSpecTool::Extract)
        return std::make_unique<SpecMP2>(&SpecEntMP2PC, project, true);
      return {};
    }};

hecl::Database::DataSpecEntry SpecEntMP2ORIG = {
    "MP2-ORIG"sv, "Data specification for unmodified Metroid Prime 2 resources"sv, {}, {}};

} // namespace DataSpec