/*
 * Copyright (c) 2020 Hemanth Savarla.
 *
 * Licensed under the GNU General Public License v3
 *
 * This is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
 *
 * This software is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
 * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 * See the GNU General Public License for more details.
 *
 */
package code.name.monkey.retromusic.activities.tageditor

import android.app.Activity
import android.content.res.ColorStateList
import android.graphics.Bitmap
import android.graphics.BitmapFactory
import android.graphics.Color
import android.graphics.drawable.Drawable
import android.net.Uri
import android.os.Bundle
import android.text.Editable
import android.text.TextWatcher
import android.transition.Slide
import android.widget.Toast
import code.name.monkey.appthemehelper.util.ATHUtil
import code.name.monkey.appthemehelper.util.MaterialUtil
import code.name.monkey.retromusic.R
import code.name.monkey.retromusic.extensions.appHandleColor
import code.name.monkey.retromusic.glide.palette.BitmapPaletteTranscoder
import code.name.monkey.retromusic.glide.palette.BitmapPaletteWrapper
import code.name.monkey.retromusic.model.Song
import code.name.monkey.retromusic.util.ImageUtil
import code.name.monkey.retromusic.util.RetroColorUtil.generatePalette
import code.name.monkey.retromusic.util.RetroColorUtil.getColor
import com.bumptech.glide.Glide
import com.bumptech.glide.load.engine.DiskCacheStrategy
import com.bumptech.glide.request.animation.GlideAnimation
import com.bumptech.glide.request.target.SimpleTarget
import java.util.*
import kotlinx.android.synthetic.main.activity_album_tag_editor.*
import org.jaudiotagger.tag.FieldKey

class AlbumTagEditorActivity : AbsTagEditorActivity(), TextWatcher {

    override val contentViewLayout: Int
        get() = R.layout.activity_album_tag_editor

    private fun windowEnterTransition() {
        val slide = Slide()
        slide.excludeTarget(R.id.appBarLayout, true)
        slide.excludeTarget(R.id.status_bar, true)
        slide.excludeTarget(android.R.id.statusBarBackground, true)
        slide.excludeTarget(android.R.id.navigationBarBackground, true)

        window.enterTransition = slide
    }

    override fun loadImageFromFile(selectedFile: Uri?) {

        Glide.with(this@AlbumTagEditorActivity).load(selectedFile).asBitmap()
            .transcode(BitmapPaletteTranscoder(this), BitmapPaletteWrapper::class.java)
            .diskCacheStrategy(DiskCacheStrategy.NONE).skipMemoryCache(true)
            .into(object : SimpleTarget<BitmapPaletteWrapper>() {
                override fun onResourceReady(
                    resource: BitmapPaletteWrapper?,
                    glideAnimation: GlideAnimation<in BitmapPaletteWrapper>?
                ) {
                    getColor(resource?.palette, Color.TRANSPARENT)
                    albumArtBitmap = resource?.bitmap?.let { ImageUtil.resizeBitmap(it, 2048) }
                    setImageBitmap(
                        albumArtBitmap,
                        getColor(
                            resource?.palette,
                            ATHUtil.resolveColor(
                                this@AlbumTagEditorActivity,
                                R.attr.defaultFooterColor
                            )
                        )
                    )
                    deleteAlbumArt = false
                    dataChanged()
                    setResult(Activity.RESULT_OK)
                }

                override fun onLoadFailed(e: Exception?, errorDrawable: Drawable?) {
                    super.onLoadFailed(e, errorDrawable)
                    Toast.makeText(this@AlbumTagEditorActivity, e.toString(), Toast.LENGTH_LONG)
                        .show()
                }
            })
    }

    private var albumArtBitmap: Bitmap? = null
    private var deleteAlbumArt: Boolean = false

    private fun setupToolbar() {
        toolbar.setBackgroundColor(ATHUtil.resolveColor(this, R.attr.colorSurface))
        setSupportActionBar(toolbar)
    }

    override fun onCreate(savedInstanceState: Bundle?) {
        setDrawUnderStatusBar()
        super.onCreate(savedInstanceState)
        window.sharedElementsUseOverlay = true
        imageContainer?.transitionName = getString(R.string.transition_album_art)
        windowEnterTransition()
        setUpViews()
        setupToolbar()
    }

    private fun setUpViews() {
        fillViewsWithFileTags()

        MaterialUtil.setTint(yearContainer, false)
        MaterialUtil.setTint(genreContainer, false)
        MaterialUtil.setTint(albumTitleContainer, false)
        MaterialUtil.setTint(albumArtistContainer, false)

        albumText.appHandleColor().addTextChangedListener(this)
        albumArtistText.appHandleColor().addTextChangedListener(this)
        genreTitle.appHandleColor().addTextChangedListener(this)
        yearTitle.appHandleColor().addTextChangedListener(this)
    }

    private fun fillViewsWithFileTags() {
        albumText.setText(albumTitle)
        albumArtistText.setText(albumArtistName)
        genreTitle.setText(genreName)
        yearTitle.setText(songYear)
    }

    override fun loadCurrentImage() {
        val bitmap = albumArt
        setImageBitmap(
            bitmap,
            getColor(
                generatePalette(bitmap),
                ATHUtil.resolveColor(this, R.attr.defaultFooterColor)
            )
        )
        deleteAlbumArt = false
    }

    private fun toastLoadingFailed() {
        Toast.makeText(
            this@AlbumTagEditorActivity,
            R.string.could_not_download_album_cover,
            Toast.LENGTH_SHORT
        ).show()
    }

    override fun searchImageOnWeb() {
        searchWebFor(albumText.text.toString(), albumArtistText.text.toString())
    }

    override fun deleteImage() {
        setImageBitmap(
            BitmapFactory.decodeResource(resources, R.drawable.default_audio_art),
            ATHUtil.resolveColor(this, R.attr.defaultFooterColor)
        )
        deleteAlbumArt = true
        dataChanged()
    }

    override fun save() {
        val fieldKeyValueMap = EnumMap<FieldKey, String>(FieldKey::class.java)
        fieldKeyValueMap[FieldKey.ALBUM] = albumText.text.toString()
        // android seems not to recognize album_artist field so we additionally write the normal artist field
        fieldKeyValueMap[FieldKey.ARTIST] = albumArtistText.text.toString()
        fieldKeyValueMap[FieldKey.ALBUM_ARTIST] = albumArtistText.text.toString()
        fieldKeyValueMap[FieldKey.GENRE] = genreTitle.text.toString()
        fieldKeyValueMap[FieldKey.YEAR] = yearTitle.text.toString()

        writeValuesToFiles(
            fieldKeyValueMap,
            if (deleteAlbumArt) ArtworkInfo(id, null)
            else if (albumArtBitmap == null) null else ArtworkInfo(id, albumArtBitmap!!)
        )
    }

    override fun getSongPaths(): List<String> {
        return repository.albumById(id).songs
            .map(Song::data)
    }

    override fun beforeTextChanged(s: CharSequence, start: Int, count: Int, after: Int) {
    }

    override fun onTextChanged(s: CharSequence, start: Int, before: Int, count: Int) {
    }

    override fun afterTextChanged(s: Editable) {
        dataChanged()
    }

    override fun setColors(color: Int) {
        super.setColors(color)
        saveFab.backgroundTintList = ColorStateList.valueOf(color)
    }

    companion object {

        val TAG: String = AlbumTagEditorActivity::class.java.simpleName
    }
}