fix: download a esim on multi-se (#282)

Reviewed-on: https://gitea.angry.im/PeterCxy/OpenEUICC/pulls/282
Co-authored-by: septs <github@septs.pw>
Co-committed-by: septs <github@septs.pw>

app-common/src/main/java/im/angry/openeuicc/ui/EuiccManagementFragment.kt

@@ -130,10 +130,8 @@ open class EuiccManagementFragment : Fragment(), EuiccProfilesChangedListener,
             LinearLayoutManager(view.context, LinearLayoutManager.VERTICAL, false)
 
         fab.setOnClickListener {
-            Intent(requireContext(), DownloadWizardActivity::class.java).apply {
-                putExtra("selectedLogicalSlot", logicalSlotId)
-                startActivity(this)
-            }
+            val intent = DownloadWizardActivity.newIntent(requireContext(), slotId, seId)
+            startActivity(intent)
         }
     }
 

app-common/src/main/java/im/angry/openeuicc/ui/MainActivity.kt

@@ -258,9 +258,7 @@ open class MainActivity : BaseEuiccAccessActivity(), OpenEuiccContextMarker {
         val downloadShortcut = ShortcutInfoCompat.Builder(this, "download")
             .setShortLabel(getString(R.string.profile_download))
             .setIcon(IconCompat.createWithResource(this, R.drawable.ic_task_sim_card_download))
-            .setIntent(Intent(this, DownloadWizardActivity::class.java).apply {
-                action = Intent.ACTION_VIEW
-            })
+            .setIntent(DownloadWizardActivity.newIntent(this).apply { action = Intent.ACTION_VIEW })
             .build()
         return listOf(downloadShortcut)
     }

app-common/src/main/java/im/angry/openeuicc/ui/wizard/DownloadWizardActivity.kt

@@ -1,6 +1,8 @@
 package im.angry.openeuicc.ui.wizard
 
 import android.app.assist.AssistContent
+import android.content.Context
+import android.content.Intent
 import android.os.Bundle
 import android.view.View
 import android.view.WindowManager
@@ -17,6 +19,7 @@ import androidx.core.view.updatePadding
 import androidx.fragment.app.Fragment
 import androidx.lifecycle.lifecycleScope
 import im.angry.openeuicc.common.R
+import im.angry.openeuicc.core.EuiccChannel
 import im.angry.openeuicc.core.EuiccChannelManager
 import im.angry.openeuicc.ui.BaseEuiccAccessActivity
 import im.angry.openeuicc.util.LPAString
@@ -26,6 +29,22 @@ import kotlinx.coroutines.launch
 import net.typeblog.lpac_jni.LocalProfileAssistant
 
 class DownloadWizardActivity : BaseEuiccAccessActivity() {
+    companion object {
+        const val TAG = "DownloadWizardActivity"
+
+        private const val FIELD_LOGICAL_SLOT_ID = "selectedLogicalSlot"
+
+        fun newIntent(
+            context: Context,
+            logicalSlotId: Int = 0,
+            seId: EuiccChannel.SecureElementId = EuiccChannel.SecureElementId.DEFAULT
+        ) = Intent(context, DownloadWizardActivity::class.java).apply {
+            val selectedSyntheticSlotId = DownloadWizardSlotSelectFragment
+                .encodeSyntheticSlotId(logicalSlotId, seId)
+            putExtra(FIELD_LOGICAL_SLOT_ID, selectedSyntheticSlotId)
+        }
+    }
+
     data class DownloadWizardState(
         var currentStepFragmentClassName: String?,
         var selectedSyntheticSlotId: Int,
@@ -67,7 +86,7 @@ class DownloadWizardActivity : BaseEuiccAccessActivity() {
 
         state = DownloadWizardState(
             currentStepFragmentClassName = null,
-            selectedSyntheticSlotId = intent.getIntExtra("selectedLogicalSlot", 0),
+            selectedSyntheticSlotId = intent.getIntExtra(FIELD_LOGICAL_SLOT_ID, 0),
             smdp = "",
             matchingId = null,
             confirmationCode = null,

app-common/src/main/java/im/angry/openeuicc/ui/wizard/DownloadWizardSlotSelectFragment.kt

@@ -27,7 +27,10 @@ import kotlinx.coroutines.launch
 
 class DownloadWizardSlotSelectFragment : DownloadWizardActivity.DownloadWizardStepFragment() {
     companion object {
-        fun decodeSyntheticSlotId(id: Int): Pair<Int, EuiccChannel.SecureElementId> =
+        internal fun encodeSyntheticSlotId(logicalSlotId: Int, seId: EuiccChannel.SecureElementId): Int =
+            (logicalSlotId shl 16) + seId.id
+
+        internal fun decodeSyntheticSlotId(id: Int): Pair<Int, EuiccChannel.SecureElementId> =
             Pair(id shr 16, EuiccChannel.SecureElementId.createFromInt(id and 0xFF))
     }