list_activities

#!/usr/bin/env bash

# Auto-completion function
_lista() {
    # Array variable storing the possible completions.
    COMPREPLY=()

    # Pointer to current & previous completion word
    local cur=${COMP_WORDS[COMP_CWORD]}
    local prev=${COMP_WORDS[COMP_CWORD - 1]}

    if [[ ${cur} == -* ]]; then
        COMPREPLY=($(compgen -W "-s -p -h" -- "$cur")) #   Generate the completion matches and load them into $COMPREPLY array.
        return 0
    fi

    # Use the compgen for specific CLI options
    case "$prev" in
    -s) COMPREPLY=($(compgen -W "$(adb devices | awk '{if (NR > 1) print $1}')" -- "$cur")) ;;
    esac

    return 0
}

usage() {
    cat <<EOF

lista - CLI tool for activity listing

Description: Lists all activities for app by specified package

Usage: lista [options]
  -s serial id - device serial ID. Should be used if more than one Android device connected to your machine.
  -p package name (required unless -h is used). Example: -p "com.google.mail"
  -h get help

Examples:
  lista -p "com.google.mail"
  lista -p "com.google.mail" -s 78f2ba2b 
  lista -h
EOF
}

lista() {
    cmd="adb "

    local SERIAL_ID=""
    local PACKAGE_NAME=""

    while getopts ":hs:p:" opt_char; do
        case $opt_char in
        s) SERIAL_ID=$OPTARG ;;
        p) PACKAGE_NAME=$OPTARG ;; # check by regex com.nike.omega.debug - reproducible by lista -ps
        h)
            usage
            return 1
            ;;
        \?) # invalid option provided
            echo "Invalid option provided\n"
            echo "PACKAGE_NAME is required. Add -p argument"
            usage
            return 1
            ;;
        *)
            usage
            return 1
            ;;
        esac
    done

    shift $((OPTIND - 1))

    _setSerialId $SERIAL_ID

    if [ -z "$PACKAGE_NAME" ]; then
        echo "PACKAGE_NAME is required. Add -p argument"
        return 1
    else
        _setPackage $PACKAGE_NAME
    fi

    _showActivities $cmd
}

# Set serial id of device
_setSerialId() {
    if [ ! -z "$1" ]; then
        echo "Serial ID: $1"
        cmd+="-s $1 "
    fi
}

# Set package name to look for
_setPackage() {
    echo "Package name: $PACKAGE_NAME\n"
    cmd+="shell dumpsys activity activities | grep \"$PACKAGE_NAME\""
}

# Execute command and parse results
_showActivities() {
    local result=$(eval "$@" | grep Hist | awk -F '[{}]' '{print $2}' | cut -d ' ' -f3)

    if [ -z $result ]; then
        echo "No activities found\nCheck if app is runnung on your device or package name is correct"
    else
        echo "Activity stack:"
        echo "$result"
    fi
}

# Assign the auto-completion function
complete -F _lista lista