cmus-lyrics-update

#!/usr/bin/env bash

function dependency_test (){

    if ! type cmus >/dev/null 2>&1; then

        printf "\033c"
        echo ""
        echo "Cmus Is Not Installed!"
        echo ""
        echo "Cmus Is An Amazing Console Audio Player!"
        echo "Please Install Cmus Using Your Package-manager!"
        echo ""

        exit_check

    elif ! type wget >/dev/null 2>&1; then

        printf "\033c"
        echo ""
        echo "Wget Is Not Installed!"
        echo "Please Install Wget Using Your Package-manager!"
        echo ""

        exit_check

    elif ! type perl >/dev/null 2>&1; then

        printf "\033c"
        echo ""
        echo "Perl Is Not Installed!"
        echo ""
        echo "Perl Is A Required Dependency!"
        echo "Please Install Perl Using Your Package-manager!"
        echo ""

        exit_check

    fi

    perl -MURI::Escape -e 'print "$URI::Escape::VERSION\n";' &> /dev/null

    RETVAL=$?

    if [ "$RETVAL" -ne 0 ]; then

        printf "\033c"
        echo ""
        echo "Perl Module \"URI::Escape\" Is Not Installed!"
        echo ""
        echo "Module \"URI::Escape\" Is A Required Dependency!"
        echo "Please Open The Following Link For More Info,"
        echo ""
        echo -e '\e[38;5;82m'"http://stackoverflow.com/q/65865"
        echo ""
        tput sgr0

        exit_check

    else

        cmus_check

    fi

}

function cmus_check (){

    CMUSQ=$(cmus-remote -Q 2>/dev/null)

    if [[ -z "$CMUSQ" ]]; then

        printf "\033c"
        echo ""
        echo "Cmus Is Not Running!"
        echo "To Start Cmus, type \"cmus\" In Your Terminal!"
        echo ""

        exit_check

    else

        cmus_status

    fi

}

function cmus_status (){

    CM_ST=$(cmus-remote -Q 2>/dev/null | grep "stopped")

    if [[ -n "$CM_ST" ]]; then

        printf "\033c"
        echo ""
        echo "Cmus Is Not Playing Anything!"
        echo ""

        exit_check

    else

        tag_check

    fi

}

function tag_check (){

    TITLE=$(cmus-remote -Q 2>/dev/null | grep -m 1 'title' | cut -d " " -f 3-)

    if [[ -z "$TITLE" ]]; then

        printf "\033c"

        echo ""
        echo "Cmus can't get the title field from the file metadata!"
        echo "More information on this subject can be obtained here,"
        echo -e '\e[38;5;82m'"https://en.wikipedia.org/wiki/ID3"
        echo -e '\e[38;5;82m'"https://en.wikipedia.org/wiki/Tag_editor"
        echo ""
        tput sgr0

        exit_check

    fi

    ARTIST=$(cmus-remote -Q 2>/dev/null | grep -m 1 'artist' | cut -d " " -f 3-)

    if [[ -z "$ARTIST" ]]; then

        printf "\033c"

        echo ""
        echo "Cmus can't get the artist field from the file metadata!"
        echo "More information on this subject can be obtained here,"
        echo -e '\e[38;5;82m'"https://en.wikipedia.org/wiki/ID3"
        echo -e '\e[38;5;82m'"https://en.wikipedia.org/wiki/Tag_editor"
        echo ""
        tput sgr0

        exit_check

    else

        check_ovh_deps

    fi

}

function check_ovh_deps (){

    if ! type curl >/dev/null 2>&1; then

        check_glyr_deps

    elif ! type jq >/dev/null 2>&1; then

        check_glyr_deps

    else

        link_check_ovh

    fi

}

function link_check_ovh (){

    if wget --spider --user-agent="Mozilla/5.0 Gecko/20100101" --no-check-certificate --quiet --timeout=30 -q "https://lyrics.ovh/" -O /dev/null; then

        get_lyrics_ovh

    else

        printf "\033c"
        echo ""
        echo "Can Not Connect To The Site \"lyrics.ovh\"!"
        echo "Make Sure Your Internet Connection Is Active!"
        echo "If The Problem Persists You Can Report It At,"
        echo "GitHub Repository Of The Project By Creating,"
        echo "An Issue There. Here Is The Link To The Repo,"
        echo ""
        echo -e '\e[38;5;82m'"https://github.com/hakerdefo/cmus-lyrics"
        echo ""
        tput sgr0
        echo "If You Don't Use GitHub You Can Report It By,"
        echo "Emailing The Author At The Following Address,"
        echo ""
        echo -e '\e[38;5;82m'"hakerdefo (at) gmail (dot) com"
        echo ""
        tput sgr0
        read -rsp $'Press any key to continue...\n' -n1
        printf "\033c"

        check_glyr_deps

    fi

}

function get_lyrics_ovh (){

    work_directory="/tmp/cmus_lyrics"
    test -d "$work_directory"|| mkdir -p "$work_directory"
    TITLE2=$(echo "$TITLE" | perl -MURI::Escape -ne 'chomp;print uri_escape($_),"\n"')
    ARTIST2=$(echo "$ARTIST" | perl -MURI::Escape -ne 'chomp;print uri_escape($_),"\n"')
    FILE_HASH=$(echo -n "$TITLE$ARTIST" | base32)
    FILE_HASH2=$(echo -n "$FILE_HASH" | sha256sum | awk '{print $1}')
    LYRIC_FOUND="$work_directory/$FILE_HASH2"
    FILE_HASH_MISSING=$(echo -n "$FILE_HASH" | sha1sum | awk '{print $1}')
    LYRIC_MISSING="$work_directory/$FILE_HASH_MISSING"
    FILE_HASH_OVH=$(echo -n "$FILE_HASH" | sha224sum | awk '{print $1}')
    OVH_FILE="$work_directory/$FILE_HASH_OVH"

    if [ ! -f "$OVH_FILE" ]; then

        curl -s --connect-timeout 30 --user-agent "Mozilla/5.0 Gecko/20100101" --output "$OVH_FILE" "https://api.lyrics.ovh/v1/$ARTIST2/$TITLE2" > /dev/null

        LYRIC_CHECK_OVH=$(grep -i "No lyrics found" "$OVH_FILE")

        if [[ -z "$LYRIC_CHECK_OVH" ]]; then

            jq -r .lyrics "$OVH_FILE" > "$LYRIC_FOUND"

            printf '\n%s\n%s\n' "$TITLE - $ARTIST" "$(cat "$LYRIC_FOUND")" >"$LYRIC_FOUND"
            printf '\n' >> "$LYRIC_FOUND"
            stty size | perl -ale 'print "-"x$F[1]' >> "$LYRIC_FOUND"
            cat "$LYRIC_FOUND"

            sleep 1
            cmus_check

        else

            check_glyr_deps

        fi

    else

        sleep 1
        cmus_check

    fi

}

function check_glyr_deps (){

    if ! type glyrc >/dev/null 2>&1; then

        song_not_found

    else

        link_check_glyr

    fi

}

function link_check_glyr (){

    if wget --spider --user-agent="Mozilla/5.0 Gecko/20100101" --no-check-certificate --quiet --timeout=30 -q "https://google.com" -O /dev/null; then

        get_lyrics_glyr

    else

        printf "\033c"
        echo ""
        echo "Can Not Connect To The Web World Of Internet!"
        echo "Make Sure Your Internet Connection Is Active!"
        echo "If The Problem Persists You Can Report It At,"
        echo "GitHub Repository Of The Project By Creating,"
        echo "An Issue There. Here Is The Link To The Repo,"
        echo ""
        echo -e '\e[38;5;82m'"https://github.com/hakerdefo/cmus-lyrics"
        echo ""
        tput sgr0
        echo "If You Don't Use GitHub You Can Report It By,"
        echo "Emailing The Author At The Following Address,"
        echo ""
        echo -e '\e[38;5;82m'"hakerdefo (at) gmail (dot) com"
        echo ""
        tput sgr0
        read -rsp $'Press any key to continue...\n' -n1
        printf "\033c"

        exit_check

    fi

}

function get_lyrics_glyr (){

    FILE_HASH_GLY=$(echo -n "$FILE_HASH" | sha384sum | awk '{print $1}')
    GLY_FILE="$work_directory/$FILE_HASH_GLY"

    if [ ! -f "$GLY_FILE" ]; then

        glyrc lyrics --write "$GLY_FILE" --verbosity 0 --useragent "Mozilla/5.0 Gecko/20100101" --artist "$ARTIST" --title "$TITLE" --force-utf8 >/dev/null 2>&1

        if [ -f "$GLY_FILE" ]; then

            cp "$GLY_FILE" "$LYRIC_FOUND"

            printf '\n%s\n%s\n' "$TITLE - $ARTIST" "$(cat "$LYRIC_FOUND")" >"$LYRIC_FOUND"
            printf '\n' >> "$LYRIC_FOUND"
            stty size | perl -ale 'print "-"x$F[1]' >> "$LYRIC_FOUND"
            cat "$LYRIC_FOUND"

            sleep 1
            cmus_check

        else

            song_not_found

        fi

    else

        sleep 1
        cmus_check

    fi

}

function song_not_found (){

    if [ -f "$LYRIC_MISSING" ]; then

        sleep 1
        cmus_check

    else

        { echo ""; echo "Sorry, We don't have lyrics for this song yet."; echo ""; stty size | perl -ale 'print "-"x$F[1]'; echo ""; } >> "$LYRIC_MISSING"
        cat "$LYRIC_MISSING"

        sleep 1
        cmus_check

    fi

}

function exit_check (){

    if type curl >/dev/null 2>&1; then

        if type jq >/dev/null 2>&1; then

            if type glyrc >/dev/null 2>&1; then

                exit_cmus_lyrics

            else

                exit_cmus_lyrics_missing_deps

            fi

        fi

    fi

}

function exit_cmus_lyrics (){

    if [ -d "$work_directory" ]; then

        rm -r "$work_directory"

    fi

    exit

}

function exit_cmus_lyrics_missing_deps (){

    if ! type curl >/dev/null 2>&1; then

        MISSING_1="curl "

    fi

    if ! type jq >/dev/null 2>&1; then

        MISSING_2="jq "

    fi

    if ! type glyrc >/dev/null 2>&1; then

        MISSING_3="glyrc"

    fi

    if [ -d "$work_directory" ]; then

        rm -r "$work_directory"

    fi

    echo ""
    echo "All built-in lyrics providers are not enabled currently."
    echo "Install following missing packages to use all providers,"
    echo ""
    echo "${MISSING_1}${MISSING_2}${MISSING_3}"
    echo ""

    exit

}

while :
do
    cmus_check
done