#!/usr/bin/env bash

error() {
    >&2 printf "\e[31mE\e[0m %s\n" "$1"
}

die() {
    error "$*"
    exit 1
}

process_args() {
    while :; do
        case $1 in
            -l|--label)
                key_label="$2"
                shift
                ;;
            *)
            break
        esac
        shift
    done
}

get_file_hash() {
    local file
    local file_size

    file=$1
    file_size=${2:-1}
    if (( file_size != -1 ))
    then
        if [ -f "$file" ]
        then
            if (( file_size > 0 ))
                then
                if (( $file_size > 2000000 ))
                then
                    #calculate
                    local tmp_file
                    tmp_file=mktemp
                    head -c 1MB "$file" > "$tmp_file"
                    tail -c 1MB "$file" >> "$tmp_file"
                    printf "%s" "$(md5sum "$tmp_file" | cut -d" " -f 1)"
                    rm "$tmp_file"
                else
                    printf "%s" "$(md5sum "$file" | cut -d" " -f 1)"
                fi
                return
            fi
        fi
    fi
    printf "%s" -1
}

get_file_size() {
    local file
    local a
    file=$1
    if [ -f "$file" ]
    then
        wc -c < "$file"
        return  
    fi
    printf "%s" -1
}

insert_media() {
    local filename filesize filehash tag
    filename="$1"
    tag="$2"
    [ ! -f "$filename" ] && {
        error "File $filename not found, can't insert media";
        return;
    }
    [ -z "$tag" ] && {
        error "Tag not defined, can't insert media"
    }
    filesize=$(get_file_size "$filename")
    filehash=$(get_file_hash "$filename" "$filesize")
    sed -i -e "s#\[\[${tag}\]\]#${filename}#g" \
        -e "s#\[\[${tag}_filesize\]\]#${filesize}#g" \
        -e "s#\[\[${tag}_filehash\]\]#${filehash}#g" \
        ${folder}"/montage.kdenlive" || {
            error "sed command error on insert media!"
        }
}

test=""
base_dir="${HOME}/medias/videos/sambab"

conf="$*"
key_label=${key_label:-SAMBAB}


printf "Creation de la conférence de %s\n" "$conf"
cd ~/medias/videos/sambab || exit 1

#Get las friday date for creating folder
friday=$(date --date='last Friday' +"%Y.%m.%d")

#Add basedir, then I have my directory
folder="${base_dir}/${friday}-${conf// /_}"

#create it
mkdir "${folder}"/{rushes,audio,titles} -p || die "folder creation failed"


cp "${base_dir}/logo_amis.svg" "${folder}/titles" || die "SVG copy failed!"
cp "${base_dir}/template.kdenlive" "${folder}/montage.kdenlive" || dir "Template copy failed!" }

inkscape_date=$(LC_ALL=fr_FR.UTF-8 date --date='last Friday' +"%A %d %B %Y")

printf "Put Name on title\n"
sed -i "s/\[\[conf\]\]/${conf//_/ }/g" ${folder}/titles/logo_amis.svg || die "Change text on credits screen failed!"

printf "Put date on title\n"
sed -i "s/\[\[date\]\]/${inkscape_date}/g" ${folder}/titles/logo_amis.svg || die "Change date failed!"

printf "Export SVG title \n"
inkscape --export-type="png" "${folder}/titles/logo_amis.svg" || die "Export failed" 

printf "Importing PNG File in %s/montage.kdenlive \n" "$folder"
insert_media "$folder/titles/logo_amis.png" "logo"

echo "Mount USBkey with Label $key_label"
usb_key="/dev/$(lsblk -o KNAME,LABEL | grep ${key_label} | awk '{print $1}')"
[[ ! $usb_key = "/dev/" ]] || die "Can't getting device name, is USB key plugged? $usb_key"


disk="$(udisksctl mount -b ${usb_key} | awk '{print $4}')"
sleep 1
[[ -n $disk ]] || die " -> Error mounting device $usb_key"

if mv ${disk}/RECORD/EXREC/*.MP3 "${folder}/audio/audio.mp3";
then
    # import audio file
    printf "Importing Audio File in %s/montage.kdenlive \n" "$folder"
    insert_media "${folder}/audio/audio.mp3" audio
else
    error "Moving audio file failed!"
fi

mv ${disk}/$(date --date='last Friday' +'%Y-%m-%d')\ *.mkv "${folder}/rushes/" || error "Moving video file failed!"

udisksctl unmount -b ${usb_key}
exit 0