2 files changed, 91 insertions, 0 deletions
diff --git a/library/src/main/kotlin/ca/allanwang/kau/email/EmailBuilder.kt b/library/src/main/kotlin/ca/allanwang/kau/email/EmailBuilder.kt
new file mode 100644
index 0000000..1553757
--- /dev/null
+++ b/library/src/main/kotlin/ca/allanwang/kau/email/EmailBuilder.kt
@@ -0,0 +1,70 @@
+package ca.allanwang.kau.email
+
+import android.content.Context
+import android.content.Intent
+import android.content.pm.PackageManager
+import android.net.Uri
+import android.os.Build
+import android.support.annotation.StringRes
+import ca.allanwang.kau.R
+import ca.allanwang.kau.logging.KL
+import ca.allanwang.kau.utils.isAppInstalled
+import ca.allanwang.kau.utils.string
+
+
+/**
+ * Created by Allan Wang on 2017-06-20.
+ */
+class EmailBuilder(@StringRes val emailId: Int, @StringRes val subjectId: Int) {
+    var message: String = "Write here."
+    var deviceDetails: Boolean = true
+    var appInfo: Boolean = true
+    var footer: String? = null
+    private val packages: MutableList<Package> = mutableListOf()
+
+    fun checkPackage(packageName: String, appName: String) = packages.add(Package(packageName, appName))
+
+    data class Package(val packageName: String, val appName: String)
+
+    fun execute(context: Context) {
+        val intent = Intent(Intent.ACTION_VIEW, Uri.parse("mailto:" + context.string(emailId)))
+        intent.putExtra(Intent.EXTRA_SUBJECT, context.string(subjectId))
+        val emailBuilder = StringBuilder()
+        emailBuilder.append(message).append("\n\n")
+        if (deviceDetails)
+            emailBuilder.append("\nOS Version: ").append(System.getProperty("os.version")).append("(").append(Build.VERSION.INCREMENTAL).append(")")
+                    .append("\nOS API Level: ").append(Build.VERSION.SDK_INT)
+                    .append("\nDevice: ").append(Build.DEVICE)
+                    .append("\nManufacturer: ").append(Build.MANUFACTURER)
+                    .append("\nModel (and Product): ").append(Build.MODEL).append(" (").append(Build.PRODUCT).append(")")
+                    .append("\n")
+
+        if (appInfo) {
+            try {
+                val appInfo = context.packageManager.getPackageInfo(context.packageName, 0)
+                emailBuilder.append("\nApp Version Name: ").append(appInfo.versionName)
+                        .append("\nApp Version Code: ").append(appInfo.versionCode).append("\n")
+            } catch (e: PackageManager.NameNotFoundException) {
+                KL.e("EmailBuilder packageInfo not found")
+            }
+        }
+
+        packages.forEach {
+            if (context.isAppInstalled(it.packageName))
+                emailBuilder.append(String.format("\n%s is installed", it.appName))
+        }
+
+        if (footer != null)
+            emailBuilder.append("\n\n").append(footer)
+
+        intent.putExtra(Intent.EXTRA_TEXT, emailBuilder.toString())
+        context.startActivity(Intent.createChooser(intent, context.resources.getString(R.string.kau_send_via)))
+    }
+}
+
+fun Context.sendEmail(@StringRes emailId: Int, @StringRes subjectId: Int, builder: EmailBuilder.() -> Unit = {}) {
+    EmailBuilder(emailId, subjectId).apply {
+        builder()
+        execute(this@sendEmail)
+    }
+}
+\ No newline at end of file
diff --git a/library/src/main/kotlin/ca/allanwang/kau/utils/Utils.kt b/library/src/main/kotlin/ca/allanwang/kau/utils/Utils.kt
index 642c29c..8aaadaf 100644
--- a/library/src/main/kotlin/ca/allanwang/kau/utils/Utils.kt
+++ b/library/src/main/kotlin/ca/allanwang/kau/utils/Utils.kt
@@ -1,9 +1,13 @@
 package ca.allanwang.kau.utils
 
+import android.content.Context
 import android.content.res.Resources
 import android.os.Build
 import android.os.Looper
 import ca.allanwang.kau.logging.KL
+import android.content.pm.PackageManager
+
+
 
 /**
  * Created by Allan Wang on 2017-05-28.
@@ -27,4 +31,21 @@ val buildIsMarshmallowAndUp: Boolean
 fun checkThread(id: Int) {
     val status = if (Looper.myLooper() == Looper.getMainLooper()) "is" else "is not"
     KL.d("$id $status in the main thread")
+}
+
+/**
+ * Checks if a given package is installed
+ * @param packageName packageId
+ * @return true if installed with activity, false otherwise
+ */
+fun Context.isAppInstalled(packageName: String): Boolean {
+    val pm = packageManager
+    var installed: Boolean
+    try {
+        pm.getPackageInfo(packageName, PackageManager.GET_ACTIVITIES)
+        installed = true
+    } catch (e: PackageManager.NameNotFoundException) {
+        installed = false
+    }
+    return installed
 }
 \ No newline at end of file