#!/bin/bash

set -e 

test -n "$LINES" || {
    eval $(resize)
}
test -n "$LINES" || {
    read -r LINES COLUMNS < <(stty size)
}
test -n "$LINES" || {
    LINES=25
    COLUMS=80
}


type whiptail &>/dev/null && {
    ECHO(){
        whiptail --msgbox "$1" $((LINES - 6))  $(( $COLUMNS - 6)) --title "incorrect input" 
    }
    READ(){
        whiptail --inputbox "$1" $((LINES - 6))  $(( $COLUMNS - 6)) --title "$2" 3>&1 1>&2 2>&3
    }
} || {
    ECHO(){
        echo "$1"
        read -N 1 OK
    }
    READ(){
        cat >&2 << EOF

---------------------------------------------
$2
---------------------------------------------
$1
EOF
        read RESULT
        echo "$RESULT"
    }
}



#APP_NAME
while test -z "${APP_NAME:-}"
do
    APP_NAME="$(READ 'Please choose the name of the app: ' 'Create new Android-App step (1/)')"
done


#APP_PACKAGE
while test -z "${APP_PACKAGE:-}"
do
    APP_PACKAGE_DEFAULT="${APP_NAME,,}"
    APP_PACKAGE_DEFAULT="${APP_PACKAGE_DEFAULT//[!a-z0-9]/_}"
    APP_PACKAGE="$(READ "Please provide a Package.Name for the App [default=$APP_PACKAGE_DEFAULT]: " 'Create new Android-App step (2/)' )"
    APP_PACKAGE="${APP_PACKAGE:-$APP_PACKAGE_DEFAULT}"
    APP_PACKAGE="${APP_PACKAGE,,}"
    APP_PACKAGE="${APP_PACKAGE//[!a-z0-9\.]/}"
    test -d "apps/$APP_PACKAGE" && {
        ECHO "There is already an app with APP_PACKAGE '$APP_PACKAGE'. Choose other APP_PACKAGE name" >&2
        APP_PACKAGE=""
    }
done


#APP_FOLDER
while test -z "${APP_FOLDER:-}"
do
    APP_FOLDER_DEFAULT="./apps/${APP_PACKAGE}"
    APP_FOLDER="$(READ "Please provide a a path where to setup the Android App Skeleton[default=$APP_FOLDER_DEFAULT]: " 'Create new Android-App step (3/)' )"
    APP_FOLDER="${APP_FOLDER:-$APP_FOLDER_DEFAULT}"
    test -d "$APP_FOLDER" && {
        ECHO "There is already a folder at '$APP_FOLDER'. Choose other APP_PACKAGE name" >&2
        APP_FOLDER=""
    }
done


#APP_VERSION_SDK_TARGET
while test -z "${APP_VERSION_SDK_TARGET:-}"
do
    APP_VERSION_SDK_TARGET_DEFAULT="33"
    APP_VERSION_SDK_TARGET="$(READ "$(cat << API_LEVELS
Please Choose the Target SDK Version:

35 = android 15  = 2024
34 = android 14  = 2023
33 = android 13  = 2022
32 = android 12l = 2022
31 = android 12  = 2021
30 = android 11  = 2020
20 = android 10  = 2019
(see https://apilevels.com/ for more info)
please choose [default=$APP_VERSION_SDK_TARGET_DEFAULT]: 
API_LEVELS
)" 'Create new Android-App step (4/)' )"
    APP_VERSION_SDK_TARGET="${APP_VERSION_SDK_TARGET:-$APP_VERSION_SDK_TARGET_DEFAULT}"
    test "$APP_VERSION_SDK_TARGET" -gt 0 || { 
        ECHO "error: APP_VERSION_SDK_TARGET '$APP_VERSION_SDK_TARGET' is not valid" 
        APP_VERSION_SDK_TARGET='';
    }
done


#APP_VERSION_SDK_TARGET
while test -z "${APP_VERSION_SDK_MIN:-}"
do
    APP_VERSION_SDK_MIN_DEFAULT="$(( $APP_VERSION_SDK_TARGET - 3))"
    APP_VERSION_SDK_MIN="$(READ "$(cat << API_LEVELS
Please Choose the Target SDK Version:

35 = android 15  = 2024
34 = android 14  = 2023
33 = android 13  = 2022
32 = android 12l = 2022
31 = android 12  = 2021
30 = android 11  = 2020
20 = android 10  = 2019
(see https://apilevels.com/ for more info)
please choose [default=$APP_VERSION_SDK_MIN_DEFAULT]: 
API_LEVELS
)" 'Create new Android-App step (5/)' )"
    APP_VERSION_SDK_MIN="${APP_VERSION_SDK_MIN:-$APP_VERSION_SDK_MIN_DEFAULT}"
    test "$APP_VERSION_SDK_MIN" -gt 0 || { 
        ECHO "error: APP_VERSION_SDK_MIN '$APP_VERSION_SDK_MIN' is not valid" 
        APP_VERSION_SDK_TARGET='';
    }
done


APP_PERMISSIONS="$(cat << APP_PERMISSIONS_EOF
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.MANAGE_DOCUMENTS"/>
<uses-permission android:name="android.permission.MANAGE_MEDIA"/>
<uses-permission android:name="android.permission.MANAGE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.POST_NOTIFICATIONS"/>
<uses-permission android:name="android.permission.READ_MEDIA_AUDIO"/>
<uses-permission android:name="android.permission.READ_MEDIA_IMAGES"/>
<uses-permission android:name="android.permission.READ_MEDIA_VIDEO"/>
<uses-permission android:name="android.permission.READ_MEDIA_VISUAL_USER_SELECTED"/>
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"  android:maxSdkVersion="32" />
<uses-permission android:name="android.permission.READ_SYNC_SETTINGS"/>
<uses-permission android:name="android.permission.VIBRATE"/>
<uses-permission android:name="android.permission.WAKE_LOCK"/>
<uses-permission android:name="android.permission.WRITE_CALENDAR"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.WRITE_MEDIA_STORAGE"/>
<uses-permission android:name="android.permission.WRITE_SETTINGS"/>
<uses-permission android:name="android.permission.WRITE_SYNC_SETTINGS"/>
APP_PERMISSIONS_EOF
)"


mkdir -p "$APP_FOLDER"


APP_VALUES="$(tee "${APP_FOLDER}/values.sh" << VALUES
APP_NAME='$APP_NAME'
APP_PACKAGE='$APP_PACKAGE'
APP_FOLDER='$APP_FOLDER'
APP_VERSION_SDK_TARGET='$APP_VERSION_SDK_TARGET'
APP_VERSION_SDK_MINTARGET='$APP_VERSION_SDK_TARGET'
APP_PERMISSIONS='$APP_PERMISSIONS'
VALUES
)"

cat << INFO
Creating an skeleton for an Android app with the following info:
$APP_VALUES
INFO


cat > "${APP_FOLDER}/AndroidManifest.xml" << ANDROIDMANIFEST
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
      package="$APP_PACKAGE"
      android:versionCode="1"
      android:versionName="1.0">
    <uses-sdk android:minSdkVersion="$APP_VERSION_SDK_MIN"
    android:targetSdkVersion="$APP_VERSION_SDK_TARGET"/>
$(sed 's/^/    /' <<< "$APP_PERMISSIONS")
    <application android:label="$APP_NAME" android:icon="@drawable/ic_launcher">
        <activity android:name="$APP_PACKAGE.AppActivity"
                  android:exported="true"
                  android:configChanges="orientation|screenSize|keyboardHidden"
                  android:label="$APP_NAME">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>
</manifest>
ANDROIDMANIFEST

cat Dockerfile > "${APP_FOLDER}/Dockerfile"
cat >> "${APP_FOLDER}/Dockerfile" << DOCKERFILEADDITION
RUN echo "$YESACCEPT" | sdkmanager --install "build-tools;33.0.2"
RUN echo "$YESACCEPT" | sdkmanager --install "platforms;android-33"
DOCKERFILEADDITION