package core.utils

import android.content.Context
import android.graphics.Bitmap
import android.graphics.BitmapFactory
import android.graphics.Matrix
import android.net.Uri
import java.io.File
import java.io.FileOutputStream
import java.util.UUID

object ImageUtils {
    fun compressImage(context: Context, uri: Uri, maxWidth: Int = 1280, maxHeight: Int = 1280, quality: Int = 80): File? {
        return try {
            val inputStream = context.contentResolver.openInputStream(uri)
            val options = BitmapFactory.Options().apply {
                inJustDecodeBounds = true
            }
            BitmapFactory.decodeStream(inputStream, null, options)
            inputStream?.close()

            var inSampleSize = 1
            if (options.outHeight > maxHeight || options.outWidth > maxWidth) {
                val halfHeight = options.outHeight / 2
                val halfWidth = options.outWidth / 2
                while (halfHeight / inSampleSize >= maxHeight && halfWidth / inSampleSize >= maxWidth) {
                    inSampleSize *= 2
                }
            }

            val decodeOptions = BitmapFactory.Options().apply {
                inSampleSize = inSampleSize
            }
            val finalInputStream = context.contentResolver.openInputStream(uri)
            var bitmap = BitmapFactory.decodeStream(finalInputStream, null, decodeOptions)
            finalInputStream?.close()

            if (bitmap == null) return null

            // Resize if still too large
            if (bitmap.width > maxWidth || bitmap.height > maxHeight) {
                val scale = Math.min(maxWidth.toFloat() / bitmap.width, maxHeight.toFloat() / bitmap.height)
                val matrix = Matrix().apply { postScale(scale, scale) }
                bitmap = Bitmap.createBitmap(bitmap, 0, 0, bitmap.width, bitmap.height, matrix, true)
            }

            val file = File(context.cacheDir, "compressed_${UUID.randomUUID()}.jpg")
            val out = FileOutputStream(file)
            bitmap.compress(Bitmap.CompressFormat.JPEG, quality, out)
            out.flush()
            out.close()
            
            file
        } catch (e: Exception) {
            e.printStackTrace()
            null
        }
    }
}