/*
 * Copyright (c) 2022 Huawei Device Co., Ltd.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#ifndef ECMASCRIPT_JSPANDAFILE_JS_PANDAFILE_H
#define ECMASCRIPT_JSPANDAFILE_JS_PANDAFILE_H

#include "ecmascript/common.h"
#include "ecmascript/js_function.h"
#include "ecmascript/jspandafile/constpool_value.h"
#include "ecmascript/jspandafile/method_literal.h"
#include "ecmascript/mem/c_containers.h"

#include "libpandafile/file-inl.h"
#include "libpandafile/file_items.h"
#include "libpandafile/literal_data_accessor.h"

namespace panda {
namespace ecmascript {
class JSPandaFile {
public:
    struct JSRecordInfo {
        uint32_t mainMethodIndex {0};
        bool isCjs {false};
        bool isJson {false};
        int jsonStringId {-1};
        CUnorderedSet<const EcmaVM *> vmListOfParsedConstPool;
        int moduleRecordIdx {-1};
        CUnorderedMap<uint32_t, uint64_t> constpoolMap;
        bool hasTSTypes {false};
        uint32_t typeSummaryOffset {0};
        CString npmPackageName;

        void SetParsedConstpoolVM(const EcmaVM *vm)
        {
            vmListOfParsedConstPool.insert(vm);
        }

        bool IsParsedConstpoolOfCurrentVM(const EcmaVM *vm) const
        {
            auto iter = vmListOfParsedConstPool.find(vm);
            if (iter != vmListOfParsedConstPool.end()) {
                return true;
            }
            return false;
        }
    };
    static constexpr char ENTRY_FUNCTION_NAME[] = "func_main_0";
    static constexpr char ENTRY_MAIN_FUNCTION[] = "_GLOBAL::func_main_0";
    static constexpr char PATCH_MAIN_FUNCTION[] = "_GLOBAL::patch_main_0";
    static constexpr char PATCH_FUNCTION_NAME_0[] = "patch_main_0";
    static constexpr char PATCH_FUNCTION_NAME_1[] = "patch_main_1";

    static constexpr char MODULE_CLASS[] = "L_ESModuleRecord;";
    static constexpr char COMMONJS_CLASS[] = "L_CommonJsRecord;";
    static constexpr char TYPE_FLAG[] = "typeFlag";
    static constexpr char TYPE_SUMMARY_OFFSET[] = "typeSummaryOffset";

    static constexpr char IS_COMMON_JS[] = "isCommonjs";
    static constexpr char IS_JSON_CONTENT[] = "jsonFileContent";
    static constexpr char MODULE_RECORD_IDX[] = "moduleRecordIdx";
    static constexpr char PACKAGE_NAME[] = "pkgName@";
    static constexpr char MERGE_ABC_NAME[] = "modules.abc";
    static constexpr char NPM_PATH_SEGMENT[] = "node_modules";
    static constexpr char PACKAGE_PATH_SEGMENT[] = "pkg_modules";
    static constexpr char BUNDLE_INSTALL_PATH[] = "/data/storage/el1/bundle/";
    static constexpr int PACKAGE_NAME_LEN = 8;
    static constexpr int TYPE_SUMMARY_OFFSET_NOT_FOUND = 0;
    static constexpr int32_t PF_OFFSET = 0;

    JSPandaFile(const panda_file::File *pf, const CString &descriptor);
    ~JSPandaFile();

    const CString &GetJSPandaFileDesc() const
    {
        return desc_;
    }

    uint32_t GetChecksum() const
    {
        return checksum_;
    }

    const panda_file::File *GetPandaFile() const
    {
        return pf_;
    }

    std::string GetFileName() const
    {
        return pf_->GetFilename();
    }

    MethodLiteral* GetMethodLiterals() const
    {
        return methodLiterals_;
    }

    void SetMethodLiteralToMap(MethodLiteral *methodLiteral)
    {
        ASSERT(methodLiteral != nullptr);
        methodLiteralMap_.emplace(methodLiteral->GetMethodId().GetOffset(), methodLiteral);
    }

    const CUnorderedMap<uint32_t, MethodLiteral *> &GetMethodLiteralMap() const
    {
        return methodLiteralMap_;
    }

    MethodLiteral *GetMethodLiteralByIndex(uint32_t index) const
    {
        auto info = methodLiteralMap_.find(index);
        if (info != methodLiteralMap_.end()) {
            return info->second;
        }
        return nullptr;
    }

    uint32_t GetNumMethods() const
    {
        return numMethods_;
    }

    uint32_t GetConstpoolIndex() const
    {
        return constpoolIndex_;
    }

    uint32_t GetMainMethodIndex(const CString &recordName = ENTRY_FUNCTION_NAME) const
    {
        if (IsBundlePack()) {
            return jsRecordInfo_.begin()->second.mainMethodIndex;
        }
        auto info = jsRecordInfo_.find(recordName);
        if (info != jsRecordInfo_.end()) {
            return info->second.mainMethodIndex;
        }
        LOG_ECMA(ERROR) << "can not get main method index: " << recordName;
        return 0;
    }

    const CUnorderedMap<uint32_t, uint64_t> *GetConstpoolMapByReocrd(const CString &recordName) const
    {
        auto info = jsRecordInfo_.find(recordName);
        if (info != jsRecordInfo_.end()) {
            return &info->second.constpoolMap;
        }
        LOG_FULL(FATAL) << "find entryPoint failed: " << recordName;
        UNREACHABLE();
    }

    const CUnorderedMap<uint32_t, uint64_t> &GetConstpoolMap() const
    {
        return constpoolMap_;
    }

    uint32_t PUBLIC_API GetOrInsertConstantPool(ConstPoolType type, uint32_t offset,
                                                const CUnorderedMap<uint32_t, uint64_t> *constpoolMap = nullptr);

    void UpdateMainMethodIndex(uint32_t mainMethodIndex, const CString &recordName = ENTRY_FUNCTION_NAME)
    {
        if (IsBundlePack()) {
            jsRecordInfo_.begin()->second.mainMethodIndex = mainMethodIndex;
        } else {
            auto info = jsRecordInfo_.find(recordName);
            if (info != jsRecordInfo_.end()) {
                info->second.mainMethodIndex = mainMethodIndex;
            }
        }
    }

    PUBLIC_API MethodLiteral *FindMethodLiteral(uint32_t offset) const;

    int GetModuleRecordIdx(const CString &recordName = ENTRY_FUNCTION_NAME) const
    {
        if (IsBundlePack()) {
            return jsRecordInfo_.begin()->second.moduleRecordIdx;
        }
        auto info = jsRecordInfo_.find(recordName);
        if (info != jsRecordInfo_.end()) {
            return info->second.moduleRecordIdx;
        }
        // The array subscript will not have a negative number, and returning -1 means the search failed
        return -1;
    }

    Span<const uint32_t> GetClasses() const
    {
        return pf_->GetClasses();
    }

    inline bool IsExternal(panda_file::File::EntityId id) const
    {
        return pf_->IsExternal(id);
    }

    inline panda_file::File::StringData GetStringData(panda_file::File::EntityId id) const
    {
        return pf_->GetStringData(id);
    }

    panda_file::File::EntityId ResolveMethodIndex(panda_file::File::EntityId id, uint16_t idx) const
    {
        return pf_->ResolveMethodIndex(id, idx);
    }

    panda_file::LiteralDataAccessor GetLiteralDataAccessor() const
    {
        EntityId literalArraysId = pf_->GetLiteralArraysId();
        panda_file::LiteralDataAccessor lda(*pf_, literalArraysId);
        return lda;
    }

    uint32_t GetConstpoolNum() const
    {
        return pf_->GetHeader()->num_indexes;
    }

    Span<const panda_file::File::EntityId> GetMethodIndex(const panda_file::File::IndexHeader *indexHeader) const
    {
        return pf_->GetMethodIndex(indexHeader);
    }

    const void *GetHeader() const
    {
        return static_cast<const void *>(pf_->GetHeader());
    }

    uint32_t GetFileSize() const
    {
        return pf_->GetHeader()->file_size;
    }

    bool CheckAndGetRecordInfo(const CString &recordName, JSRecordInfo &recordInfo) const;

    CString GetJsonStringId(const JSRecordInfo &jsRecordInfo) const;

    bool PUBLIC_API IsModule(const JSRecordInfo &jsRecordInfo) const
    {
        return jsRecordInfo.moduleRecordIdx != -1;
    }

    bool IsCjs(const JSRecordInfo &jsRecordInfo) const
    {
        return jsRecordInfo.isCjs;
    }

    bool IsJson(const JSRecordInfo &jsRecordInfo) const
    {
        return jsRecordInfo.isJson;
    }

    bool IsBundlePack() const
    {
        return isBundlePack_;
    }

    bool IsLoadedAOT() const
    {
        return (anFileInfoIndex_ != INVALID_INDEX);
    }

    uint32_t GetFileUniqId() const
    {
        return static_cast<uint32_t>(GetPandaFile()->GetUniqId());
    }

    bool IsNewVersion() const
    {
        return isNewVersion_;
    }

    bool HasRecord(const CString &recordName) const
    {
        return jsRecordInfo_.find(recordName) != jsRecordInfo_.end();
    }

    JSRecordInfo &FindRecordInfo(const CString &recordName)
    {
        auto info = jsRecordInfo_.find(recordName);
        if (info == jsRecordInfo_.end()) {
            LOG_FULL(FATAL) << "find recordName failed: " << recordName;
            UNREACHABLE();
        }
        return info->second;
    }

    // note : it only uses in TDD
    void InsertJSRecordInfo(const CString &recordName)
    {
        JSRecordInfo info;
        jsRecordInfo_.insert({recordName, info});
    }

    const CUnorderedMap<CString, JSRecordInfo> &GetJSRecordInfo() const
    {
        return jsRecordInfo_;
    }

    static CString ParseEntryPoint(const CString &desc)
    {
        return desc.substr(1, desc.size() - 2); // 2 : skip symbol "L" and ";"
    }

    void CheckIsBundlePack();
    void CheckIsRecordWithBundleName(const CString &entry);
    bool IsRecordWithBundleName() const
    {
        return isRecordWithBundleName_;
    }
    CString GetEntryPoint(const CString &recordName) const;
    CString GetNpmEntries(const CString &recordName) const;
    uint32_t GetAOTFileInfoIndex() const
    {
        return anFileInfoIndex_;
    }

    void SetAOTFileInfoIndex(uint32_t index)
    {
        anFileInfoIndex_ = index;
    }

    static bool IsEntryOrPatch(const CString &name)
    {
        return (name == PATCH_FUNCTION_NAME_0) || (name == ENTRY_FUNCTION_NAME);
    }

    bool HasTSTypes(const CString &recordName) const
    {
        auto it = jsRecordInfo_.find(recordName);
        if (it != jsRecordInfo_.end()) {
            return it->second.hasTSTypes;
        }
        return false;
    }

    bool HasTSTypes(const JSRecordInfo &recordInfo) const
    {
        return recordInfo.hasTSTypes;
    }

    uint32_t GetTypeSummaryOffset(const CString &recordName) const
    {
        auto it = jsRecordInfo_.find(recordName);
        if (it != jsRecordInfo_.end()) {
            return it->second.typeSummaryOffset;
        }
        return TYPE_SUMMARY_OFFSET_NOT_FOUND;
    }

    bool HasTypeSummaryOffset(const CString &recordName) const
    {
        return GetTypeSummaryOffset(recordName) != TYPE_SUMMARY_OFFSET_NOT_FOUND;
    }

    void DeleteParsedConstpoolVM(const EcmaVM *vm)
    {
        for (auto &recordInfo : jsRecordInfo_) {
            recordInfo.second.vmListOfParsedConstPool.erase(vm);
        }
    }
    static FunctionKind PUBLIC_API GetFunctionKind(panda_file::FunctionKind funcKind);
    static FunctionKind GetFunctionKind(ConstPoolType type);

    bool IsFirstMergedAbc() const;
    const void *GetBase() const
    {
        return static_cast<const void *>(pf_->GetBase());
    }

private:
    void InitializeUnMergedPF();
    void InitializeMergedPF();

    static constexpr size_t VERSION_SIZE = 4;
    static constexpr std::array<uint8_t, VERSION_SIZE> OLD_VERSION {0, 0, 0, 2};

    const panda_file::File *pf_ {nullptr};
    uint32_t constpoolIndex_ {0};
    uint32_t checksum_ {0};
    CUnorderedMap<uint32_t, MethodLiteral *> methodLiteralMap_;
    CUnorderedMap<uint32_t, uint64_t> constpoolMap_;
    uint32_t numMethods_ {0};
    MethodLiteral *methodLiterals_ {nullptr};
    CString desc_;
    uint32_t anFileInfoIndex_ {INVALID_INDEX};
    bool isNewVersion_ {false};

    // marge abc
    bool isBundlePack_ {true}; // isBundlePack means app compile mode is JSBundle
    CUnorderedMap<CString, JSRecordInfo> jsRecordInfo_;
    bool isRecordWithBundleName_ {true};
    static bool loadedFirstPandaFile;
    bool isFirstPandafile_{false};
};
}  // namespace ecmascript
}  // namespace panda
#endif // ECMASCRIPT_JSPANDAFILE_JS_PANDAFILE_H