#!/bin/bash

# global variables
declare -a video_file_list
settings_file="./settings.ini"

get_user_variables_from_ini_file


#save all mp4 and mkv file paths in video_file_list array
mapfile -t video_file_list < <(find "$input_folder" -type f \( -name "*.mp4" -o -name "*.mkv" -o -name "*.avi" \) | sort)


# Funktion, um den kleinsten gemeinsamen übergeordneten Ordner zu finden
find_common_parent() {
    local common_parent
    local first_file=true

    # Durchlaufe alle übergebenen Dateien
    for file in "$@"; do
        # Überprüfe, ob die Datei existiert und eine Datei ist
        if [ -f "$file" ]; then
            # Bestimme den Ordner der Datei
            file_dir=$(dirname "$file")

            # Wenn dies die erste Datei ist, setze den gemeinsamen übergeordneten Ordner auf den Ordner dieser Datei
            if [ "$first_file" = true ]; then
                common_parent="$file_dir"
                first_file=false
            else
                # Andernfalls bestimme den gemeinsamen übergeordneten Ordner zwischen dem aktuellen und dem bisherigen
                common_parent=$(realpath --relative-to="$common_parent" "$file_dir")
            fi
        else
            echo "Datei existiert nicht: $file"
            return 1
        fi
    done

    # Gib den gemeinsamen übergeordneten Ordner zurück
    echo "$common_parent"
}





get_user_variables_from_ini_file() {

    # get absolut path of the ini file
    settings_file=$(relativ_to_fullpath "$settings_file")

    # abort script if settings file can't be found
    if [ ! -e "$settings_file" ]; then
        _exit 1 "Settingsfile not found at: "$settings_file
    fi

    # read ini values
    input_folder=$(sed -nr "/^\[pathes\]/ { :l /^input_folder[ ]*=/ { s/[^=]*=[ ]*//; p; q;}; n; b l;}" "$settings_file")
    output_folder=$(sed -nr "/^\[pathes\]/ { :l /^output_folder[ ]*=/ { s/[^=]*=[ ]*//; p; q;}; n; b l;}" "$settings_file")
    jsonfile_path=$(sed -nr "/^\[pathes\]/ { :l /^jsonfile_path[ ]*=/ { s/[^=]*=[ ]*//; p; q;}; n; b l;}" "$settings_file")
    mode=$(sed -nr "/^\[mode\]/ { :l /^mode[ ]*=/ { s/[^=]*=[ ]*//; p; q;}; n; b l;}" "$settings_file")
    mkvmerge=$(sed -nr "/^\[mkvmerge\]/ { :l /^mkvmerge[ ]*=/ { s/[^=]*=[ ]*//; p; q;}; n; b l;}" "$settings_file")
    notification_text=$(sed -nr "/^\[notification_text\]/ { :l /^notification_text[ ]*=/ { s/[^=]*=[ ]*//; p; q;}; n; b l;}" "$settings_file")
    nofification_audio=$(sed -nr "/^\[nofification_audio\]/ { :l /^nofification_audio[ ]*=/ { s/[^=]*=[ ]*//; p; q;}; n; b l;}" "$settings_file")


   
}

relativ_to_fullpath() {

    local path="$1"
    scriptpath="$( cd -- "$(dirname "$0")" >/dev/null 2>&1 ; pwd -P )"
    
    if [ ! -e "$path" ]; then
        pathfull=$(realpath "$(dirname "$scriptpath")/$path")
    else
        pathfull=$path
    fi

}







_exit(){

    #get the exit message
    local error_state="$1"
    local error_msg="$2"
    local scriptpath="$( cd -- "$(dirname "$0")" >/dev/null 2>&1 ; pwd -P )"

    #script stopted with errors
    if [ "$error_state" = 1 ]; then

        #echo output
        echo "────────────────────────────────────────────────────────────────"
        echo -e "${WHITE_ON_RED}                             Error                              ${NC}"  
        echo
        echo -e "${RED}$error_msg${NC}"
        echo "────────────────────────────────────────────────────────────────"

        #notification_text
        if [ "$notification_text" = "on" ]; then
            notify-send --urgency=critical "Auto MKVMerge Warning" "$error_msg"
        fi

        #nofification_audio
        if [ "$nofification_audio" = "beep" ]; then
            playsound_speaker_sound 1500 150
            playsound_speaker_sound 1500 150
            playsound_speaker_sound 1500 150
        elif [ "$nofification_audio" = "voice" ]; then
            spd-say "Auto MKVMerge Error"
        elif [ "$nofification_audio" = "file" ]; then
            aplay "$scriptpath/error.wav" > /dev/null 2>&1
        fi

        #exit the script
        echo
        read -n 1 -s -r -p "Press any key to exit"
        exit

    fi

    #normal exit
    if [ "$error_state" = 0 ]; then

        #echo output
        echo "────────────────────────────────────────────────────────────────"
        echo -e "${BLACK_ON_WHITE}                           Finished!                            ${NC}"        
        echo "────────────────────────────────────────────────────────────────"

        #notification_text
        if [ "$notification_text" = "on" ]; then
            notify-send --urgency=normal "Auto MKVMerge" "Finished!"
        fi

        #nofification_audio
        if [ "$nofification_audio" = "beep" ]; then
            playsound_speaker_sound 200 200
            playsound_speaker_sound 400 200
        elif [ "$nofification_audio" = "voice" ]; then
            spd-say "Auto MKVMerge ist fertig"
        elif [ "$nofification_audio" = "file" ]; then
            aplay "$scriptpath/done.wav" > /dev/null 2>&1
        fi

        #exit the script
        echo
        read -n 1 -s -r -p "Press any key to exit"
        exit

    fi

    #exit the script
    echo
    read -n 1 -s -r -p "Press any key to exit"
    exit

}