/*
 * Copyright 2020-2021 Jamie Mansfield <jmansfield@cadixdev.org>
 * Copyright 2021 Petr Mrazek <peterix@gmail.com>
 *
 * 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.
 */

#include "ATLPackManifest.h"

#include "Json.h"

static ATLauncher::DownloadType parseDownloadType(QString rawType) {
    if(rawType == QString("server")) {
        return ATLauncher::DownloadType::Server;
    }
    else if(rawType == QString("browser")) {
        return ATLauncher::DownloadType::Browser;
    }
    else if(rawType == QString("direct")) {
        return ATLauncher::DownloadType::Direct;
    }

    return ATLauncher::DownloadType::Unknown;
}

static ATLauncher::ModType parseModType(QString rawType) {
    // See https://wiki.atlauncher.com/mod_types
    if(rawType == QString("root")) {
        return ATLauncher::ModType::Root;
    }
    else if(rawType == QString("forge")) {
        return ATLauncher::ModType::Forge;
    }
    else if(rawType == QString("jar")) {
        return ATLauncher::ModType::Jar;
    }
    else if(rawType == QString("mods")) {
        return ATLauncher::ModType::Mods;
    }
    else if(rawType == QString("flan")) {
        return ATLauncher::ModType::Flan;
    }
    else if(rawType == QString("dependency") || rawType == QString("depandency")) {
        return ATLauncher::ModType::Dependency;
    }
    else if(rawType == QString("ic2lib")) {
        return ATLauncher::ModType::Ic2Lib;
    }
    else if(rawType == QString("denlib")) {
        return ATLauncher::ModType::DenLib;
    }
    else if(rawType == QString("coremods")) {
        return ATLauncher::ModType::Coremods;
    }
    else if(rawType == QString("mcpc")) {
        return ATLauncher::ModType::MCPC;
    }
    else if(rawType == QString("plugins")) {
        return ATLauncher::ModType::Plugins;
    }
    else if(rawType == QString("extract")) {
        return ATLauncher::ModType::Extract;
    }
    else if(rawType == QString("decomp")) {
        return ATLauncher::ModType::Decomp;
    }
    else if(rawType == QString("texturepack")) {
        return ATLauncher::ModType::TexturePack;
    }
    else if(rawType == QString("resourcepack")) {
        return ATLauncher::ModType::ResourcePack;
    }
    else if(rawType == QString("shaderpack")) {
        return ATLauncher::ModType::ShaderPack;
    }
    else if(rawType == QString("texturepackextract")) {
        return ATLauncher::ModType::TexturePackExtract;
    }
    else if(rawType == QString("resourcepackextract")) {
        return ATLauncher::ModType::ResourcePackExtract;
    }
    else if(rawType == QString("millenaire")) {
        return ATLauncher::ModType::Millenaire;
    }

    return ATLauncher::ModType::Unknown;
}

static void loadVersionLoader(ATLauncher::VersionLoader & p, QJsonObject & obj) {
    p.type = Json::requireString(obj, "type");
    p.choose = Json::ensureBoolean(obj, QString("choose"), false);

    auto metadata = Json::requireObject(obj, "metadata");
    p.latest = Json::ensureBoolean(metadata, QString("latest"), false);
    p.recommended = Json::ensureBoolean(metadata, QString("recommended"), false);

    // Minecraft Forge
    if (p.type == "forge") {
        p.version = Json::ensureString(metadata, "version", "");
    }

    // Fabric Loader
    if (p.type == "fabric") {
        p.version = Json::ensureString(metadata, "loader", "");
    }
}

static void loadVersionLibrary(ATLauncher::VersionLibrary & p, QJsonObject & obj) {
    p.url = Json::requireString(obj, "url");
    p.file = Json::requireString(obj, "file");
    p.md5 = Json::requireString(obj, "md5");

    p.download_raw = Json::requireString(obj, "download");
    p.download = parseDownloadType(p.download_raw);

    p.server = Json::ensureString(obj, "server", "");
}

static void loadVersionConfigs(ATLauncher::VersionConfigs & p, QJsonObject & obj) {
    p.filesize = Json::requireInteger(obj, "filesize");
    p.sha1 = Json::requireString(obj, "sha1");
}

static void loadVersionMod(ATLauncher::VersionMod & p, QJsonObject & obj) {
    p.name = Json::requireString(obj, "name");
    p.version = Json::requireString(obj, "version");
    p.url = Json::requireString(obj, "url");
    p.file = Json::requireString(obj, "file");
    p.md5 = Json::ensureString(obj, "md5", "");

    p.download_raw = Json::requireString(obj, "download");
    p.download = parseDownloadType(p.download_raw);

    p.type_raw = Json::requireString(obj, "type");
    p.type = parseModType(p.type_raw);

    // This contributes to the Minecraft Forge detection, where we rely on mod.type being "Forge"
    // when the mod represents Forge. As there is little difference between "Jar" and "Forge, some
    // packs regretfully use "Jar". This will correct the type to "Forge" in these cases (as best
    // it can).
    if(p.name == QString("Minecraft Forge") && p.type == ATLauncher::ModType::Jar) {
        p.type_raw = "forge";
        p.type = ATLauncher::ModType::Forge;
    }

    if(obj.contains("extractTo")) {
        p.extractTo_raw = Json::requireString(obj, "extractTo");
        p.extractTo = parseModType(p.extractTo_raw);
        p.extractFolder = Json::ensureString(obj, "extractFolder", "").replace("%s%", "/");
    }

    if(obj.contains("decompType")) {
        p.decompType_raw = Json::requireString(obj, "decompType");
        p.decompType = parseModType(p.decompType_raw);
        p.decompFile = Json::requireString(obj, "decompFile");
    }

    p.description = Json::ensureString(obj, QString("description"), "");
    p.optional = Json::ensureBoolean(obj, QString("optional"), false);
    p.recommended = Json::ensureBoolean(obj, QString("recommended"), false);
    p.selected = Json::ensureBoolean(obj, QString("selected"), false);
    p.hidden = Json::ensureBoolean(obj, QString("hidden"), false);
    p.library = Json::ensureBoolean(obj, QString("library"), false);
    p.group = Json::ensureString(obj, QString("group"), "");
    if(obj.contains("depends")) {
        auto dependsArr = Json::requireArray(obj, "depends");
        for (const auto depends : dependsArr) {
            p.depends.append(Json::requireString(depends));
        }
    }

    p.client = Json::ensureBoolean(obj, QString("client"), false);

    // computed
    p.effectively_hidden = p.hidden || p.library;
}

void ATLauncher::loadVersion(PackVersion & v, QJsonObject & obj)
{
    v.version = Json::requireString(obj, "version");
    v.minecraft = Json::requireString(obj, "minecraft");
    v.noConfigs = Json::ensureBoolean(obj, QString("noConfigs"), false);

    if(obj.contains("mainClass")) {
        auto main = Json::requireObject(obj, "mainClass");
        v.mainClass = Json::ensureString(main, "mainClass", "");
    }

    if(obj.contains("extraArguments")) {
        auto arguments = Json::requireObject(obj, "extraArguments");
        v.extraArguments = Json::ensureString(arguments, "arguments", "");
    }

    if(obj.contains("loader")) {
        auto loader = Json::requireObject(obj, "loader");
        loadVersionLoader(v.loader, loader);
    }

    if(obj.contains("libraries")) {
        auto libraries = Json::requireArray(obj, "libraries");
        for (const auto libraryRaw : libraries)
        {
            auto libraryObj = Json::requireObject(libraryRaw);
            ATLauncher::VersionLibrary target;
            loadVersionLibrary(target, libraryObj);
            v.libraries.append(target);
        }
    }

    if(obj.contains("mods")) {
        auto mods = Json::requireArray(obj, "mods");
        for (const auto modRaw : mods)
        {
            auto modObj = Json::requireObject(modRaw);
            ATLauncher::VersionMod mod;
            loadVersionMod(mod, modObj);
            v.mods.append(mod);
        }
    }

    if(obj.contains("configs")) {
        auto configsObj = Json::requireObject(obj, "configs");
        loadVersionConfigs(v.configs, configsObj);
    }
}
