package com.yzx.webebook.activity;


import android.app.Activity;
import android.app.AlertDialog;
import android.content.BroadcastReceiver;
import android.content.ContentResolver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.database.ContentObserver;
import android.graphics.drawable.Drawable;
import android.net.Uri;
import android.os.Build;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.os.PowerManager;
import android.provider.Settings;
import android.util.Log;
import android.view.Gravity;
import android.view.KeyEvent;
import android.view.View;
import android.view.ViewGroup;
import android.view.animation.Animation;
import android.view.animation.AnimationUtils;
import android.widget.LinearLayout;
import android.widget.ListView;
import android.widget.SeekBar;
import android.widget.TextView;

import androidx.core.content.ContextCompat;
import androidx.core.view.GravityCompat;
import androidx.drawerlayout.widget.DrawerLayout;

import com.blankj.utilcode.util.NumberUtils;
import com.google.android.material.appbar.AppBarLayout;
import com.yzx.webebook.R;
import com.yzx.webebook.activity.base.BaseActivity;
import com.yzx.webebook.adapter.CategoryAdapter;
import com.yzx.webebook.model.bean.BookChapterBean;
import com.yzx.webebook.model.bean.CollBookBean;
import com.yzx.webebook.model.local.BookRepository;
import com.yzx.webebook.model.local.ReadSettingManager;
import com.yzx.webebook.presenter.ReadPresenter;
import com.yzx.webebook.presenter.ReadView;
import com.yzx.webebook.utils.BrightnessUtils;
import com.yzx.webebook.utils.Constant;
import com.yzx.webebook.utils.LogUtils;
import com.yzx.webebook.utils.RxUtils;
import com.yzx.webebook.utils.ScreenUtils;
import com.yzx.webebook.utils.StringUtils;
import com.yzx.webebook.utils.SystemBarUtils;
import com.yzx.webebook.widget.ReadSettingDialog;
import com.yzx.webebook.widget.page.PageLoader;
import com.yzx.webebook.widget.page.PageView;
import com.yzx.webebook.widget.page.TxtChapter;

import org.jetbrains.annotations.Nullable;

import java.util.List;

import io.reactivex.disposables.Disposable;

import static android.view.View.GONE;
import static android.view.View.VISIBLE;

public class ReadActivity extends BaseActivity<ReadPresenter> implements ReadView {
    private static final String TAG = "ReadActivity";
    public static final int REQUEST_MORE_SETTING = 1;
    public static final String EXTRA_COLL_BOOK = "extra_coll_book";
    public static final String EXTRA_IS_COLLECTED = "extra_is_collected";

    // 注册 Brightness 的 uri
    private final Uri BRIGHTNESS_MODE_URI =
            Settings.System.getUriFor(Settings.System.SCREEN_BRIGHTNESS_MODE);
    private final Uri BRIGHTNESS_URI =
            Settings.System.getUriFor(Settings.System.SCREEN_BRIGHTNESS);
    private final Uri BRIGHTNESS_ADJ_URI =
            Settings.System.getUriFor("screen_auto_brightness_adj");

    private static final int WHAT_CATEGORY = 1;
    private static final int WHAT_CHAPTER = 2;

    DrawerLayout mDlSlide;
    /*************top_menu_view*******************/
//    AppBarLayout mAblTopMenu;
//    TextView mTvCommunity;
//    TextView mTvBrief;
    /***************content_view******************/
    PageView mPvPage;
    /***************bottom_menu_view***************************/
    TextView mTvPageTip;

    LinearLayout mLlBottomMenu;
    TextView mTvPreChapter;
    SeekBar mSbChapterProgress;
    TextView mTvNextChapter;
    TextView mTvCategory;
    TextView mTvNightMode;
    TextView mTvSetting;
    /***************left slide*******************************/
    ListView mLvCategory;
    /*****************view******************/
    private ReadSettingDialog mSettingDialog;
    private PageLoader mPageLoader;
    private Animation mTopInAnim;
    private Animation mTopOutAnim;
    private Animation mBottomInAnim;
    private Animation mBottomOutAnim;
    private CategoryAdapter mCategoryAdapter;
    private CollBookBean mCollBook;
    //控制屏幕常亮
    private PowerManager.WakeLock mWakeLock;


    /***************params*****************/
    private boolean isCollected = false; // isFromSDCard
    private boolean isNightMode = false;
    private boolean isFullScreen = false;
    private boolean isRegistered = false;

    private String mBookId;
    private String mRealBookId;
    private String mReadTaskId;
    private float lastProgress = 0f;


    private Handler mHandler = new Handler() {
        @Override
        public void handleMessage(Message msg) {
            super.handleMessage(msg);

            switch (msg.what) {
                case WHAT_CATEGORY:
                    mLvCategory.setSelection(mPageLoader.getChapterPos());
                    break;
                case WHAT_CHAPTER:
                    mPageLoader.openChapter();
                    break;
            }
        }
    };
    // 接收电池信息和时间更新的广播
    private BroadcastReceiver mReceiver = new BroadcastReceiver() {
        @Override
        public void onReceive(Context context, Intent intent) {
            if (intent.getAction().equals(Intent.ACTION_BATTERY_CHANGED)) {
                int level = intent.getIntExtra("level", 0);
                if (mPageLoader != null) {
                    mPageLoader.updateBattery(level);
                }
            }
            // 监听分钟的变化
            else if (intent.getAction().equals(Intent.ACTION_TIME_TICK)) {
                if (mPageLoader != null) {
                    mPageLoader.updateTime();
                }
            }
        }
    };

    // 亮度调节监听
    // 由于亮度调节没有 Broadcast 而是直接修改 ContentProvider 的。所以需要创建一个 Observer 来监听 ContentProvider 的变化情况。
    private ContentObserver mBrightObserver = new ContentObserver(new Handler()) {
        @Override
        public void onChange(boolean selfChange) {
            onChange(selfChange, null);
        }

        @Override
        public void onChange(boolean selfChange, Uri uri) {
            super.onChange(selfChange);

            // 判断当前是否跟随屏幕亮度，如果不是则返回
            if (selfChange || !mSettingDialog.isBrightFollowSystem()) return;

            // 如果系统亮度改变，则修改当前 Activity 亮度
            if (BRIGHTNESS_MODE_URI.equals(uri)) {
                Log.d(TAG, "亮度模式改变");
            } else if (BRIGHTNESS_URI.equals(uri) && !BrightnessUtils.isAutoBrightness(ReadActivity.this)) {
                Log.d(TAG, "亮度模式为手动模式 值改变");
                BrightnessUtils.setBrightness(ReadActivity.this, BrightnessUtils.getScreenBrightness(ReadActivity.this));
            } else if (BRIGHTNESS_ADJ_URI.equals(uri) && BrightnessUtils.isAutoBrightness(ReadActivity.this)) {
                Log.d(TAG, "亮度模式为自动模式 值改变");
                BrightnessUtils.setDefaultBrightness(ReadActivity.this);
            } else {
                Log.d(TAG, "亮度调整 其他");
            }
        }
    };

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
    }

    @Override
    public int getInflateId() {
        return R.layout.activity_read;
    }

    @Override
    public void initView() {
        mDlSlide = findViewById(R.id.read_dl_slide);
//        mTvCommunity = findViewById(R.id.read_tv_community);
//        mTvBrief = findViewById(R.id.read_tv_brief);
        mPvPage = findViewById(R.id.read_pv_page);
        mTvPageTip = findViewById(R.id.read_tv_page_tip);
        mLlBottomMenu = findViewById(R.id.read_ll_bottom_menu);
        mTvPreChapter = findViewById(R.id.read_tv_pre_chapter);
        mSbChapterProgress = findViewById(R.id.read_sb_chapter_progress);
        mTvNextChapter = findViewById(R.id.read_tv_next_chapter);
        mTvCategory = findViewById(R.id.read_tv_category);
        mTvNightMode = findViewById(R.id.read_tv_night_mode);
        mTvSetting = findViewById(R.id.read_tv_setting);
        mLvCategory = findViewById(R.id.read_iv_category);
    }

    @Override
    public void initData() {
        String id = getIntent().getStringExtra("book_id");
        mReadTaskId = getIntent().getStringExtra("read_task_id");
        mRealBookId = getIntent().getStringExtra("real_book_id");
        loadBookData(id);

        getMPresenter().getReadProgress(mRealBookId, mReadTaskId);
    }


    private void loadBookData(String id) {
        mCollBook = BookRepository.getInstance().getCollBook(id);

        isNightMode = ReadSettingManager.getInstance().isNightMode();
        isFullScreen = ReadSettingManager.getInstance().isFullScreen();
        mBookId = mCollBook.get_id();
        Log.d(TAG, "initData: " + mCollBook.toString());

        //获取页面加载器
        mPageLoader = mPvPage.getPageLoader(mCollBook);

        //禁止滑动展示DrawerLayout
        mDlSlide.setDrawerLockMode(DrawerLayout.LOCK_MODE_LOCKED_CLOSED);
        //侧边打开后，返回键能够起作用
        mDlSlide.setFocusableInTouchMode(false);
        mSettingDialog = new ReadSettingDialog(this, mPageLoader);

        setUpAdapter();

        //夜间模式按钮的状态
        toggleNightMode();

        //注册广播
        IntentFilter intentFilter = new IntentFilter();
        intentFilter.addAction(Intent.ACTION_BATTERY_CHANGED);
        intentFilter.addAction(Intent.ACTION_TIME_TICK);
        registerReceiver(mReceiver, intentFilter);

        //设置当前Activity的Brightness
        if (ReadSettingManager.getInstance().isBrightnessAuto()) {
            BrightnessUtils.setDefaultBrightness(this);
        } else {
            BrightnessUtils.setBrightness(this, ReadSettingManager.getInstance().getBrightness());
        }

        //初始化屏幕常亮类
        PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
        mWakeLock = pm.newWakeLock(PowerManager.SCREEN_DIM_WAKE_LOCK, "ireader:keep bright");


        //初始化BottomMenu
        initBottomMenu();


        Disposable disposable = BookRepository.getInstance()
                .getBookChaptersInRx(mBookId)
                .compose(RxUtils::toSimpleSingle)
                .subscribe(
                        (bookChapterBeen, throwable) -> {
                            // 设置 CollBook
                            mPageLoader.getCollBook().setBookChapters(bookChapterBeen);
                            // 刷新章节列表
                            mPageLoader.refreshChapterList();
                            LogUtils.e(throwable);
                        }
                );
        addDisposable(disposable);
        initClick();
    }

    private void saveBookInfo() {
        if (mCollBook != null) {
            mCollBook.setLastRead(StringUtils.
                    dateConvert(System.currentTimeMillis(), Constant.FORMAT_BOOK_DATE));

            BookRepository.getInstance()
                    .saveCollBookWithAsync(mCollBook);
        }
    }


    private void initClick() {
        mPageLoader.setOnPageChangeListener(
                new PageLoader.OnPageChangeListener() {

                    @Override
                    public void onChapterChange(int pos) {
                        mCategoryAdapter.setChapter(pos);
                    }

                    @Override
                    public void requestChapters(List<TxtChapter> requestChapters) {
                        getMPresenter().loadChapter(mBookId, requestChapters);
                        mHandler.sendEmptyMessage(WHAT_CATEGORY);
                        //隐藏提示
                        mTvPageTip.setVisibility(GONE);
                    }

                    @Override
                    public void onCategoryFinish(List<TxtChapter> chapters) {
                        for (TxtChapter chapter : chapters) {
                            chapter.setTitle(StringUtils.convertCC(chapter.getTitle(), mPvPage.getContext()));
                        }
                        mCategoryAdapter.refreshItems(chapters);
                    }

                    @Override
                    public void onPageCountChange(int count) {
                        mSbChapterProgress.setMax(Math.max(0, count - 1));
                        mSbChapterProgress.setProgress(0);
                        // 如果处于错误状态，那么就冻结使用
                        if (mPageLoader.getPageStatus() == PageLoader.STATUS_LOADING
                                || mPageLoader.getPageStatus() == PageLoader.STATUS_ERROR) {
                            mSbChapterProgress.setEnabled(false);
                        } else {
                            mSbChapterProgress.setEnabled(true);
                        }
                    }

                    @Override
                    public void onPageChange(int pos) {
                        mSbChapterProgress.post(
                                () -> {
                                    mSbChapterProgress.setProgress(pos);
                                }
                        );
                    }
                }
        );

        mSbChapterProgress.setOnSeekBarChangeListener(
                new SeekBar.OnSeekBarChangeListener() {
                    @Override
                    public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
                        if (mLlBottomMenu.getVisibility() == VISIBLE) {
                            //显示标题
                            mTvPageTip.setText((progress + 1) + "/" + (mSbChapterProgress.getMax() + 1));
                            mTvPageTip.setVisibility(VISIBLE);
                        }
                    }

                    @Override
                    public void onStartTrackingTouch(SeekBar seekBar) {
                    }

                    @Override
                    public void onStopTrackingTouch(SeekBar seekBar) {
                        //进行切换
                        int pagePos = mSbChapterProgress.getProgress();
                        if (pagePos != mPageLoader.getPagePos()) {
                            mPageLoader.skipToPage(pagePos);
                        }
                        //隐藏提示
                        mTvPageTip.setVisibility(GONE);
                    }
                }
        );

        mPvPage.setTouchListener(new PageView.TouchListener() {
            @Override
            public boolean onTouch() {
                return !hideReadMenu();
            }

            @Override
            public void center() {
                toggleMenu(true);
            }

            @Override
            public void prePage() {
            }

            @Override
            public void nextPage() {
            }

            @Override
            public void cancel() {
            }
        });
        mLvCategory.setOnItemClickListener(
                (parent, view, position, id) -> {
                    mDlSlide.closeDrawer(GravityCompat.START);
                    mPageLoader.skipToChapter(position);
                }
        );

        mTvCategory.setOnClickListener(
                (v) -> {
                    //移动到指定位置
                    if (mCategoryAdapter.getCount() > 0) {
                        mLvCategory.setSelection(mPageLoader.getChapterPos());
                    }
                    //切换菜单
                    toggleMenu(true);
                    //打开侧滑动栏
                    mDlSlide.openDrawer(GravityCompat.START);
                }
        );
        mTvSetting.setOnClickListener(
                (v) -> {
                    toggleMenu(false);
                    mSettingDialog.show();
                }
        );

        mTvPreChapter.setOnClickListener(
                (v) -> {
                    if (mPageLoader.skipPreChapter()) {
                        mCategoryAdapter.setChapter(mPageLoader.getChapterPos());
                    }
                }
        );

        mTvNextChapter.setOnClickListener(
                (v) -> {
                    if (mPageLoader.skipNextChapter()) {
                        mCategoryAdapter.setChapter(mPageLoader.getChapterPos());
                    }
                }
        );

        mTvNightMode.setOnClickListener(
                (v) -> {
                    if (isNightMode) {
                        isNightMode = false;
                    } else {
                        isNightMode = true;
                    }
                    mPageLoader.setNightMode(isNightMode);
                    toggleNightMode();
                }
        );

    }

    @Nullable
    @Override
    public ReadPresenter initPresenter() {
        return new ReadPresenter(this);
    }

    @Override
    public void showCategory(String localId) {
        loadBookData(localId);
    }

    @Override
    public void finishChapter() {

    }

    @Override
    public void errorChapter() {

    }

    private void initBottomMenu() {
        //判断是否全屏
        if (ReadSettingManager.getInstance().isFullScreen()) {
            //还需要设置mBottomMenu的底部高度
            ViewGroup.MarginLayoutParams params = (ViewGroup.MarginLayoutParams) mLlBottomMenu.getLayoutParams();
            params.bottomMargin = ScreenUtils.getNavigationBarHeight();
            mLlBottomMenu.setLayoutParams(params);
        } else {
            //设置mBottomMenu的底部距离
            ViewGroup.MarginLayoutParams params = (ViewGroup.MarginLayoutParams) mLlBottomMenu.getLayoutParams();
            params.bottomMargin = 0;
            mLlBottomMenu.setLayoutParams(params);
        }
    }

    @Override
    public void onWindowFocusChanged(boolean hasFocus) {
        super.onWindowFocusChanged(hasFocus);
    }

    private void toggleNightMode() {
        if (isNightMode) {
            mTvNightMode.setText("日间");
            Drawable drawable = ContextCompat.getDrawable(this, R.mipmap.ic_read_menu_morning);
            mTvNightMode.setCompoundDrawablesWithIntrinsicBounds(null, drawable, null, null);
        } else {
            mTvNightMode.setText("夜间");
            Drawable drawable = ContextCompat.getDrawable(this, R.mipmap.ic_read_menu_night);
            mTvNightMode.setCompoundDrawablesWithIntrinsicBounds(null, drawable, null, null);
        }
    }

    private void setUpAdapter() {
        mCategoryAdapter = new CategoryAdapter();
        mLvCategory.setAdapter(mCategoryAdapter);
        mLvCategory.setFastScrollEnabled(true);
    }

    // 注册亮度观察者
    private void registerBrightObserver() {
        try {
            if (mBrightObserver != null) {
                if (!isRegistered) {
                    final ContentResolver cr = getContentResolver();
                    cr.unregisterContentObserver(mBrightObserver);
                    cr.registerContentObserver(BRIGHTNESS_MODE_URI, false, mBrightObserver);
                    cr.registerContentObserver(BRIGHTNESS_URI, false, mBrightObserver);
                    cr.registerContentObserver(BRIGHTNESS_ADJ_URI, false, mBrightObserver);
                    isRegistered = true;
                }
            }
        } catch (Throwable throwable) {
            LogUtils.e(TAG, "register mBrightObserver error! " + throwable);
        }
    }

    //解注册
    private void unregisterBrightObserver() {
        try {
            if (mBrightObserver != null) {
                if (isRegistered) {
                    getContentResolver().unregisterContentObserver(mBrightObserver);
                    isRegistered = false;
                }
            }
        } catch (Throwable throwable) {
            LogUtils.e(TAG, "unregister BrightnessObserver error! " + throwable);
        }
    }

    /**
     * 隐藏阅读界面的菜单显示
     *
     * @return 是否隐藏成功
     */
    private boolean hideReadMenu() {
        if (mLlBottomMenu.getVisibility() == VISIBLE) {
            toggleMenu(true);
            return true;
        } else if (mSettingDialog.isShowing()) {
            mSettingDialog.dismiss();
            return true;
        }
        return false;
    }


    /**
     * 切换菜单栏的可视状态
     * 默认是隐藏的
     */
    private void toggleMenu(boolean hideStatusBar) {
        initMenuAnim();

        if (mLlBottomMenu.getVisibility() == View.VISIBLE) {
            //关闭
            mLlBottomMenu.setVisibility(GONE);
            mTvPageTip.setVisibility(GONE);
        } else {
            mLlBottomMenu.setVisibility(View.VISIBLE);
        }
    }

    //初始化菜单动画
    private void initMenuAnim() {
        if (mTopInAnim != null) return;

        mTopInAnim = AnimationUtils.loadAnimation(this, R.anim.slide_top_in);
        mTopOutAnim = AnimationUtils.loadAnimation(this, R.anim.slide_top_out);
        mBottomInAnim = AnimationUtils.loadAnimation(this, R.anim.slide_bottom_in);
        mBottomOutAnim = AnimationUtils.loadAnimation(this, R.anim.slide_bottom_out);
        //退出的速度要快
        mTopOutAnim.setDuration(200);
        mBottomOutAnim.setDuration(200);
    }

    @Override
    public void onBackPressed() {
        if (mLlBottomMenu.getVisibility() == View.VISIBLE) {
            // 非全屏下才收缩，全屏下直接退出
            if (!ReadSettingManager.getInstance().isFullScreen()) {
                toggleMenu(true);
                return;
            }
        } else if (mSettingDialog.isShowing()) {
            mSettingDialog.dismiss();
            return;
        } else if (mDlSlide.isDrawerOpen(GravityCompat.START)) {
            mDlSlide.closeDrawer(GravityCompat.START);
            return;
        }

        if (!mCollBook.isLocal() && !isCollected
                && !mCollBook.getBookChapters().isEmpty() && false) {
            AlertDialog alertDialog = new AlertDialog.Builder(this)
                    .setTitle("加入书架")
                    .setMessage("喜欢本书就加入书架吧")
                    .setPositiveButton("确定", (dialog, which) -> {
                        //设置为已收藏
                        isCollected = true;
                        //设置阅读时间
                        mCollBook.setLastRead(StringUtils.
                                dateConvert(System.currentTimeMillis(), Constant.FORMAT_BOOK_DATE));

                        BookRepository.getInstance()
                                .saveCollBookWithAsync(mCollBook);

                        exit();
                    })
                    .setNegativeButton("取消", (dialog, which) -> {
                        exit();
                    }).create();
            alertDialog.show();
        } else {
            exit();
        }
    }

    // 退出
    private void exit() {
        // 退出
        super.onBackPressed();
    }

    @Override
    protected void onStart() {
        super.onStart();
        registerBrightObserver();
    }

    @Override
    protected void onResume() {
        super.onResume();
        if (mWakeLock != null) {
            mWakeLock.acquire();
        }
    }

    @Override
    protected void onPause() {
        super.onPause();
        if (mWakeLock != null) {
            mWakeLock.release();
        }
        if (mPageLoader != null) {
            saveBookInfo();
            mPageLoader.saveRecord();
        }
        if (getMPresenter() != null && mPageLoader != null) {
            float currProgress = Float.parseFloat(mPageLoader.getPercent());
            if (currProgress > lastProgress) {
                getMPresenter().updateReadProgress(mRealBookId, mReadTaskId, String.valueOf(mPageLoader.getPercent()));
            }
        }
    }

    @Override
    protected void onStop() {
        super.onStop();
        unregisterBrightObserver();
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        unregisterReceiver(mReceiver);

        mHandler.removeMessages(WHAT_CATEGORY);
        mHandler.removeMessages(WHAT_CHAPTER);

        mPageLoader.closeBook();
        mPageLoader = null;
    }

    @Override
    public boolean onKeyDown(int keyCode, KeyEvent event) {
        boolean isVolumeTurnPage = ReadSettingManager
                .getInstance().isVolumeTurnPage();
        switch (keyCode) {
            case KeyEvent.KEYCODE_VOLUME_UP:
                if (isVolumeTurnPage) {
                    return mPageLoader.skipToPrePage();
                }
                break;
            case KeyEvent.KEYCODE_VOLUME_DOWN:
                if (isVolumeTurnPage) {
                    return mPageLoader.skipToNextPage();
                }
                break;
        }
        return super.onKeyDown(keyCode, event);
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        if (requestCode == REQUEST_MORE_SETTING) {
            boolean fullScreen = ReadSettingManager.getInstance().isFullScreen();
            if (isFullScreen != fullScreen) {
                isFullScreen = fullScreen;
                // 刷新BottomMenu
                initBottomMenu();
            }

        }
    }

    @Override
    public void onProgressSuccess(float progress) {
        lastProgress = progress;
    }
}