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muhqu/amzn-music

Created April 16, 2018 11:36
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  1. muhqu created this gist Apr 16, 2018.
    113 changes: 113 additions & 0 deletions amzn-music
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    Original file line number Diff line number Diff line change
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    #!/bin/bash
    #
    # The MIT License (MIT)
    #
    # Copyright (c) 2018 Mathias Leppich <[email protected]>
    #
    # Permission is hereby granted, free of charge, to any person obtaining a copy
    # of this software and associated documentation files (the "Software"), to deal
    # in the Software without restriction, including without limitation the rights
    # to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
    # copies of the Software, and to permit persons to whom the Software is
    # furnished to do so, subject to the following conditions:
    #
    # The above copyright notice and this permission notice shall be included in
    # all copies or substantial portions of the Software.
    #
    # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
    # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
    # AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
    # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
    # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
    # THE SOFTWARE.
    #

    SELF="$(basename "$0")"

    usage() {
    cat <<USAGE
    $SELF { play | pause | next | prev | is_playing }
    USAGE
    }

    main() {
    if [[ $# -eq 0 ]]; then
    usage;
    exit 1;
    fi
    local ACTION=(usage)
    while [[ $# -gt 0 ]]; do
    case "$1" in
    play) shift; ACTION=(doAmazonMusicPlayback "Play"); ;;
    pause) shift; ACTION=(doAmazonMusicPlayback "Pause"); ;;
    next) shift; ACTION=(doAmazonMusicPlayback "Next"); ;;
    prev) shift; ACTION=(doAmazonMusicPlayback "Prev"); ;;
    is_playing) shift; ACTION=(isAmazonMusicPlaying); ;;
    *)
    fatal "unknown parameter: $1"
    ;;
    esac
    done

    "${ACTION[@]}"
    }

    isAmazonMusicPlaying() {
    local VALUE="$(/usr/bin/osascript 2>/dev/null <<'APPLESCRIPT'
    set isplaying to false
    tell application "System Events"
    -- set frontmostProcess to first process where it is frontmost
    tell process "Amazon Music"
    set pauseMenuItem to null
    try
    set pauseMenuItem to (menu item 1 where its name starts with "Pause") of menu 1 of menu bar item "Playback" of menu bar 1
    on error errorMsg
    end try
    set playMenuItem to null
    try
    set playMenuItem to (menu item 1 where its name starts with "Play") of menu 1 of menu bar item "Playback" of menu bar 1
    on error errorMsg
    end try
    set isplaying to (pauseMenuItem is not null and playMenuItem is null)
    end tell
    -- set frontmost of frontmostProcess to true
    end tell
    isplaying
    APPLESCRIPT
    )"
    if [[ $VALUE == "true" ]]; then
    log "Amazon Music is playing."
    exit 0;
    else
    log "Amazon Music is not playing."
    exit 1;
    fi
    }

    doAmazonMusicPlayback() {
    PREFIX="$1" /usr/bin/osascript 2>/dev/null >&2 -so <<'APPLESCRIPT'
    set PREFIX to system attribute "PREFIX"
    tell application "System Events"
    -- set frontmostProcess to first process where it is frontmost
    tell process "Amazon Music"
    -- set frontmost to true
    click (menu item 1 where its name starts with PREFIX) of menu 1 of menu bar item "Playback" of menu bar 1
    end tell
    -- set frontmost of frontmostProcess to true
    end tell
    APPLESCRIPT
    }

    fatal() {
    error "$@"
    exit 1
    }
    error() {
    log "Error:" "$@"
    }
    log() {
    echo >&2 "$@"
    }

    main "$@"