add support for various actionable Qr codes

add support for `sms`, `smsto`, `tel`, `facetime`, `facetime-audio`, `geo`, `mailto`, `vcard` and `mecard`

[facetime and facetime audio spec](https://developer.apple.com/library/archive/featuredarticles/iPhoneURLScheme_Reference/FacetimeLinks/FacetimeLinks.html)

app/src/main/java/app/grapheneos/camera/qr/data/QrCards.kt

@@ -0,0 +1,153 @@
+package app.grapheneos.camera.qr.data
+
+import android.content.ClipData
+import android.content.ClipboardManager
+import android.content.Context
+import android.content.Intent
+import android.net.Uri
+import android.os.Build
+import androidx.appcompat.view.ContextThemeWrapper
+import androidx.core.net.MailTo
+import app.grapheneos.camera.R
+import app.grapheneos.camera.qr.handler.addToContact
+import app.grapheneos.camera.qr.handler.convertWifiQrDataToIntent
+import app.grapheneos.camera.qr.parser.vcardToIntent
+import com.google.android.material.dialog.MaterialAlertDialogBuilder
+
+sealed class QrIntent {
+    abstract fun startIntent(context: Context): Boolean
+}
+
+enum class WifiSecurityType {
+    Open,
+    WPA,
+    WPA2,
+    WPA3
+}
+
+data class Wifi(
+    val ssid: String,
+    val securityType: WifiSecurityType,
+    val sharedKey: String,
+    val isHidden: Boolean
+) : QrIntent() {
+    override fun startIntent(context: Context): Boolean {
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.R) {
+            context.startActivity(convertWifiQrDataToIntent(this))
+        } else {
+            showWifiDialog(context)
+        }
+        return true
+    }
+
+    private fun showWifiDialog(context: Context) {
+        val dialogContext = ContextThemeWrapper(
+            context,
+            com.google.android.material.R.style.Theme_MaterialComponents_DayNight
+        )
+        MaterialAlertDialogBuilder(dialogContext)
+            .setTitle(R.string.wifi_dialog_title)
+            .setMessage(context.getString(R.string.wifi_dialog_message, ssid))
+            .setPositiveButton(R.string.wifi_dialog_button_positive) { _, _ ->
+                copySharedKeyToClipboard(context)
+            }
+            .setNegativeButton(R.string.wifi_dialog_button_negative, null)
+            .show()
+    }
+
+    private fun copySharedKeyToClipboard(context: Context) {
+        val sharedKeyClipData = ClipData.newPlainText(
+            context.getString(R.string.wifi_password_clipboard_label),
+            sharedKey
+        )
+        context.getSystemService(ClipboardManager::class.java).setPrimaryClip(sharedKeyClipData)
+    }
+
+}
+
+data class SMS(val number: String, val message: String) : QrIntent() {
+
+    companion object {
+        private const val EXTRA_SMS_BODY = "sms_body"
+        private const val SMS_URI = "sms"
+    }
+
+    override fun startIntent(context: Context): Boolean {
+        val messageIntent = Intent(Intent.ACTION_SENDTO).apply {
+            data = Uri.parse("$SMS_URI:$number")
+            putExtra(EXTRA_SMS_BODY, message)
+            putExtra(Intent.EXTRA_TEXT, message)
+        }
+        context.startActivity(Intent.createChooser(messageIntent, null))
+        return true
+    }
+}
+
+data class Phone(val number: Int) : QrIntent() {
+    override fun startIntent(context: Context): Boolean {
+        context.startActivity(
+            Intent.createChooser(
+                Intent(Intent.ACTION_DIAL).apply {
+                    data = Uri.parse("tel:${number}")
+                }, null
+            )
+        )
+        return true
+    }
+}
+
+data class Mail(val mailTo: MailTo, val uri: Uri) : QrIntent() {
+    override fun startIntent(context: Context): Boolean {
+        context.startActivity(
+            Intent.createChooser(
+                Intent(Intent.ACTION_SENDTO, uri), null
+            )
+        )
+        return true
+    }
+}
+
+data class GEO(val lat: String, val long: String, val altitude: String, val uri: Uri) : QrIntent() {
+    override fun startIntent(context: Context): Boolean {
+        context.startActivity(
+            Intent.createChooser(
+                Intent(Intent.ACTION_VIEW).apply {
+                    data = uri
+                }, null
+            )
+        )
+        return true
+    }
+}
+
+data class VCard(val input: String) : QrIntent() {
+    override fun startIntent(context: Context): Boolean {
+        context.startActivity(vcardToIntent(input, context))
+        return true
+    }
+}
+
+data class MeCard(
+
+    val name: String,
+    val email: String,
+    val note: String,
+    val sound: String,
+    val telephoneNumber: String,
+
+    //supported in v2+//
+
+    val telephoneNumberAv: String,
+
+    //supported in v3+//
+
+    val birthDate: String, //YYYY-MM-DD
+    val address: String,
+    val nickName: String,
+    val url: String
+) : QrIntent() {
+    override fun startIntent(context: Context): Boolean {
+        context.startActivity(addToContact())
+        return true
+    }
+}

app/src/main/java/app/grapheneos/camera/qr/handler/MeCardIntents.kt

@@ -0,0 +1,66 @@
+package app.grapheneos.camera.qr.handler
+
+
+import android.content.ContentValues
+import android.content.Intent
+import android.provider.ContactsContract
+import android.provider.ContactsContract.CommonDataKinds
+import android.provider.ContactsContract.CommonDataKinds.Nickname
+import android.provider.ContactsContract.CommonDataKinds.Website
+import android.provider.ContactsContract.Intents
+import app.grapheneos.camera.qr.data.MeCard
+
+private fun urlToContactField(url: String, type: Int = Website.TYPE_HOMEPAGE): ContentValues {
+    return ContentValues().apply {
+        put(ContactsContract.Data.MIMETYPE, Website.CONTENT_ITEM_TYPE)
+        put(Website.TYPE, type)
+        put(Website.URL, url)
+    }
+}
+
+private fun nickNameToContactField(name: String, type: Int = Nickname.TYPE_DEFAULT): ContentValues {
+    return ContentValues().apply {
+        put(ContactsContract.Data.MIMETYPE, Nickname.CONTENT_ITEM_TYPE)
+        put(Nickname.TYPE, type)
+        put(Nickname.NAME, name)
+    }
+}
+
+private fun birthdayToContactField(date: String): ContentValues {
+    return ContentValues().apply {
+        put(ContactsContract.Data.MIMETYPE, CommonDataKinds.Event.CONTENT_ITEM_TYPE)
+        put(CommonDataKinds.Event.TYPE, CommonDataKinds.Event.TYPE_BIRTHDAY)
+        put(CommonDataKinds.Event.START_DATE, date)
+    }
+}
+
+private fun phoneticNameToContactField(name: String): ContentValues {
+    return ContentValues().apply {
+        put(ContactsContract.Data.MIMETYPE, CommonDataKinds.StructuredName.CONTENT_ITEM_TYPE)
+        put(CommonDataKinds.StructuredName.DISPLAY_NAME, name)
+    }
+}
+
+fun MeCard.addToContact(): Intent {
+
+    val data = ArrayList<ContentValues>().apply {
+        if (url.isNotBlank()) add(urlToContactField(url))
+        if (nickName.isNotBlank()) add(nickNameToContactField(nickName))
+        if (birthDate.isNotBlank()) add(birthdayToContactField(birthDate))
+        if (sound.isNotBlank()) add(phoneticNameToContactField(sound))
+    }
+
+    return Intent(Intents.Insert.ACTION).apply {
+        type = ContactsContract.RawContacts.CONTENT_TYPE
+
+        if (name.isNotBlank()) putExtra(Intents.Insert.NAME, name)
+        if (email.isNotBlank()) putExtra(Intents.Insert.EMAIL, email)
+        if (note.isNotBlank()) putExtra(Intents.Insert.NOTES, note)
+        if (telephoneNumber.isNotBlank()) putExtra(Intents.Insert.PHONE, telephoneNumber)
+        if (address.isNotBlank()) putExtra(Intents.Insert.POSTAL, address)
+        if (data.isNotEmpty()) putParcelableArrayListExtra(Intents.Insert.DATA, data)
+        if (telephoneNumberAv.isNotBlank()) {
+            putExtra(Intents.Insert.SECONDARY_PHONE, telephoneNumberAv)
+        }
+    }
+}

app/src/main/java/app/grapheneos/camera/qr/handler/WifiQrIntents.kt

@@ -0,0 +1,38 @@
+package app.grapheneos.camera.qr.handler
+
+import android.content.Intent
+import android.net.wifi.WifiNetworkSuggestion
+import android.os.Build
+import android.provider.Settings
+import androidx.annotation.RequiresApi
+import app.grapheneos.camera.qr.data.Wifi
+import app.grapheneos.camera.qr.data.WifiSecurityType
+
+@RequiresApi(Build.VERSION_CODES.R)
+fun convertWifiQrDataToIntent(wifi: Wifi): Intent {
+
+    return Intent(Settings.ACTION_WIFI_ADD_NETWORKS).apply {
+        putExtra(
+            Settings.EXTRA_WIFI_NETWORK_LIST,
+            arrayListOf(convertWifiQrDataToWifiNetworkSuggestion(wifi))
+        )
+    }
+}
+
+fun convertWifiQrDataToWifiNetworkSuggestion(wifi: Wifi): WifiNetworkSuggestion {
+
+    val builder = WifiNetworkSuggestion.Builder()
+        .setIsHiddenSsid(wifi.isHidden)
+        .setSsid(wifi.ssid)
+
+    return when (wifi.securityType) {
+        WifiSecurityType.Open -> builder.build()
+
+        WifiSecurityType.WPA, WifiSecurityType.WPA2 ->
+            builder.setWpa2Passphrase(wifi.sharedKey)
+                .build()
+
+        WifiSecurityType.WPA3 -> builder.setWpa3Passphrase(wifi.sharedKey).build()
+    }
+
+}

app/src/main/java/app/grapheneos/camera/qr/parser/GeoParser.kt

@@ -0,0 +1,24 @@
+package app.grapheneos.camera.qr.parser
+
+import android.net.Uri
+import app.grapheneos.camera.qr.data.GEO
+import app.grapheneos.camera.util.removePrefixCaseInsensitive
+import java.util.regex.Pattern
+
+const val KEY_GEO = "geo:"
+
+fun parseGeo(input: String): GEO? {
+
+    if (!input.startsWith(KEY_GEO, ignoreCase = true)) return null
+    val rawText = input.removePrefixCaseInsensitive(KEY_GEO)
+    val geoDividerFinder = Regex(Pattern.quote(","))
+    val parts = rawText.split(geoDividerFinder)
+    val defaultValue = ""
+
+    return GEO(
+        lat = parts.getOrElse(0) { defaultValue },
+        long = parts.getOrElse(1) { defaultValue },
+        altitude = parts.getOrElse(2) { defaultValue },
+        uri = Uri.parse(input)
+    )
+}

app/src/main/java/app/grapheneos/camera/qr/parser/MailParser.kt

@@ -0,0 +1,12 @@
+package app.grapheneos.camera.qr.parser
+
+import android.net.Uri
+import androidx.core.net.MailTo
+import app.grapheneos.camera.qr.data.Mail
+
+fun parseMail(input: String): Mail? {
+    val uri = Uri.parse(input) ?: return null
+    if (!MailTo.isMailTo(uri)) return null
+    val mailTo = MailTo.parse(uri)
+    return Mail(mailTo, uri)
+}

app/src/main/java/app/grapheneos/camera/qr/parser/MeCardParser.kt

@@ -0,0 +1,93 @@
+package app.grapheneos.camera.qr.parser
+
+import app.grapheneos.camera.qr.data.MeCard
+import app.grapheneos.camera.util.removePrefixCaseInsensitive
+
+const val KEY_MECARD = "MECARD:"
+const val MECARD_KEY_ADDRESS = "ADR:"
+const val MECARD_KEY_BIRTHDAY = "BDAY:"
+const val MECARD_KEY_EMAIL = "EMAIL:"
+const val MECARD_KEY_NAME = "N:"
+const val MECARD_KYE_NICKNAME = "NICKNAME:"
+const val MECARD_KEY_NOTE = "NOTE:"
+const val MECARD_KYE_SOUND = "SOUND:"
+const val MECARD_KEY_TELEPHONE = "TEL:"
+const val MECARD_KEY_TELEPHONE_AV = "TEL-AV:"
+const val MECARD_KEY_URL = "URL:"
+
+fun parseMeCard(input: String): MeCard? {
+
+    if (!input.startsWith(KEY_MECARD, ignoreCase = true)) {
+        return null
+    }
+
+    val rawText = input.removePrefixCaseInsensitive(KEY_MECARD)
+
+    val escapeChar = Regex.escape("\\")
+    val splitAt = Regex.escape(";")
+    val pattern = Regex("(?<!${escapeChar})${splitAt}")
+    val fields = rawText.splitToSequence(pattern)
+
+    var name = ""
+    var nickname = ""
+    var email = ""
+    var note = ""
+    var sound = ""
+    var telephoneNumber = ""
+    var telephoneNumberAv = ""
+    var birthDate = ""
+    var address = ""
+    var url = ""
+
+    for (field in fields) {
+        when {
+            field.startsWith(MECARD_KEY_NAME, ignoreCase = true) -> {
+                name = field.removePrefixCaseInsensitive(MECARD_KEY_NAME)
+            }
+
+            field.startsWith(MECARD_KYE_NICKNAME, ignoreCase = true) -> {
+                nickname = field.removePrefixCaseInsensitive(MECARD_KYE_NICKNAME)
+            }
+
+            field.startsWith(MECARD_KYE_SOUND, ignoreCase = true) -> {
+                sound = field.removePrefixCaseInsensitive(MECARD_KYE_SOUND)
+            }
+
+            field.startsWith(MECARD_KEY_ADDRESS, ignoreCase = true) -> {
+                address = field.removePrefixCaseInsensitive(MECARD_KEY_ADDRESS)
+            }
+
+            field.startsWith(MECARD_KEY_TELEPHONE, ignoreCase = true) -> {
+                telephoneNumber = field.removePrefixCaseInsensitive(MECARD_KEY_TELEPHONE)
+            }
+
+            field.startsWith(MECARD_KEY_TELEPHONE_AV, ignoreCase = true) -> {
+                telephoneNumberAv = field.removePrefixCaseInsensitive(MECARD_KEY_TELEPHONE_AV)
+            }
+
+            field.startsWith(MECARD_KEY_EMAIL, ignoreCase = true) -> {
+                email = field.removePrefixCaseInsensitive(MECARD_KEY_EMAIL)
+            }
+
+            field.startsWith(MECARD_KEY_URL, ignoreCase = true) -> {
+                url = field.removePrefixCaseInsensitive(MECARD_KEY_URL)
+            }
+
+            field.startsWith(MECARD_KEY_NOTE, ignoreCase = true) -> {
+                note = field.removePrefixCaseInsensitive(MECARD_KEY_NOTE)
+            }
+
+            field.startsWith(MECARD_KEY_BIRTHDAY, ignoreCase = true) -> {
+                birthDate = field.removePrefixCaseInsensitive(MECARD_KEY_BIRTHDAY)
+            }
+
+        }
+    }
+
+    return MeCard(
+        name = name, email = email, note = note, sound = sound,
+        telephoneNumber = telephoneNumber, telephoneNumberAv = telephoneNumberAv,
+        birthDate = birthDate, address = address, nickName = nickname, url = url
+    )
+
+}