package eu.depau.etchdroid.activities

import android.os.Bundle
import android.app.Activity
import android.content.Intent
import android.os.Build
import android.view.View
import android.widget.Toast
import androidx.recyclerview.widget.LinearLayoutManager
import eu.depau.etchdroid.R
import eu.depau.etchdroid.StateKeeper
import eu.depau.etchdroid.adapters.PartitionTableRecyclerViewAdapter
import eu.depau.etchdroid.enums.FlashMethod
import eu.depau.etchdroid.img_types.DMGImage
import eu.depau.etchdroid.kotlin_exts.*
import eu.depau.etchdroid.services.UsbApiDmgWriteService
import eu.depau.etchdroid.services.UsbApiImgWriteService

import kotlinx.android.synthetic.main.activity_confirmation.*
import java.io.IOException

class ConfirmationActivity : ActivityBase() {
    var canContinue: Boolean = false
    var issuesFound: Boolean = false

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_confirmation)
        actionBar?.setDisplayHomeAsUpEnabled(true)

        displayDetails()
        displayImageLayout()
    }

    fun displayDetails() {
        confirm_sel_method.text = when (StateKeeper.flashMethod) {
            FlashMethod.FLASH_API -> getString(R.string.flash_dd_usb_api)
            FlashMethod.FLASH_DMG_API -> getString(R.string.flash_dmg_api)
            FlashMethod.FLASH_UNETBOOTIN -> getString(R.string.flash_unetbootin)
            FlashMethod.FLASH_WOEUSB -> getString(R.string.flash_woeusb)
            else -> null
        }

        confirm_sel_image.text = StateKeeper.imageFile?.getFileName(this)

        if (confirm_sel_image.text == null)
            confirm_sel_image.text = getString(R.string.unknown_filename)

        val imgSize = StateKeeper.imageFile?.getFileSize(this)
        confirm_sel_image_size.text = imgSize?.toHRSize()

        confirm_sel_usbdev.text = StateKeeper.usbDevice?.name

        for (trial in 0..1) {
            try {
                StateKeeper.usbMassStorageDevice!!.init()
                val blockDev = StateKeeper.usbMassStorageDevice?.blockDevice

                if (blockDev != null) {
                    val devSize = (blockDev.size.toLong() * blockDev.blockSize.toLong())
                    confirm_sel_usbdev_size.text = devSize.toHRSize()

                    if (imgSize!! > devSize)
                        confirm_extra_info.text = getString(R.string.image_bigger_than_usb)
                    else {
                        var text =
                                if (StateKeeper.flashMethod == FlashMethod.FLASH_DMG_API)
                                    getString(R.string.no_image_size_check_dmg) + "\n"
                                else
                                    ""
                        text += getString(R.string.tap_next_to_write)
                        confirm_extra_info.text = text
                        canContinue = true
                    }
                } else {
                    confirm_extra_info.text = getString(R.string.cant_read_usbdev)
                }
            } catch (e: IOException) {
                if (trial == 0) {
                    StateKeeper.usbMassStorageDevice!!.close()
                    continue
                } else {
                    confirm_extra_info.text = getString(R.string.could_not_access_usb_error)
                    break
                }
            }
        }
    }

    fun displayImageLayout() {
        val uri = StateKeeper.imageFile ?: return
        val text = uri.getFileName(this)

        if (StateKeeper.flashMethod == FlashMethod.FLASH_DMG_API) {
            StateKeeper.imageRepr = DMGImage(uri, this)
            val imgRepr = StateKeeper.imageRepr as DMGImage

            if (imgRepr.tableType == null && (imgRepr.partitionTable == null || imgRepr.partitionTable?.size == 0)) {
                part_table_header.text = getString(R.string.image_is_not_dmg)
                issuesFound = true
                return
            } else {
                part_table_header.text = if (imgRepr.tableType != null) getString(R.string.partition_table_title) else ""
                part_table_header_side.text = imgRepr.tableType?.getString(this) ?: ""
                issuesFound = false

                val viewAdapter = PartitionTableRecyclerViewAdapter(imgRepr.partitionTable!!)
                part_table_recycler.apply {
                    setHasFixedSize(true)
                    layoutManager = LinearLayoutManager(context)
                    adapter = viewAdapter
                }
            }
        }
    }

    fun nextStep() {
        if (!canContinue) {
            confirm_fab.snackbar(getString(R.string.cannot_write))
            return
        }

        toast(getString(R.string.check_notification_progress), Toast.LENGTH_LONG)

        val intent: Intent = when (StateKeeper.flashMethod) {
            FlashMethod.FLASH_API -> Intent(this, UsbApiImgWriteService::class.java)
            FlashMethod.FLASH_DMG_API -> Intent(this, UsbApiDmgWriteService::class.java)
            else -> null!!
        }

        intent.setDataAndType(StateKeeper.imageFile, "application/octet-stream")
        intent.putExtra("usbDevice", StateKeeper.usbDevice)

        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O)
            startForegroundService(intent)
        else
            startService(intent)

        moveTaskToBack(true);
        finish()
    }


    fun onButtonClicked(view: View) {
        when (view.id) {
            R.id.confirm_fab -> nextStep()
        }
    }

}