Script to create Nextcloud Photo App albums from a folder structure

nextcloud-photos-dir2album.sh

@@ -0,0 +1,210 @@
+#!/bin/bash
+
+# export PGPASSWORD=$CLOUDDB_POSTGRES_PASSWORD
+
+#psql -h 10.12.15.2 -U nextcloud <<< "select * from photos_albums;"
+#realpath --relative-base=/zp1/data/nextcloud/ Mediafix_\ 0001.jpg
+
+NEXTCLOUD_DATADIR=/zp1/data/nextcloud
+NEXTCLOUD_USER=mschoengens
+NEXTCLOUD_ALBUM_COLLABS=(
+    skapitza
+)
+NEXTCLOUD_DB=10.12.15.2 
+NEXTCLOUD_DB_USER=nextcloud
+
+FLAG_DRYRUN=1
+FLAG_SOURCE=
+
+function query () {
+    sql="$1"
+    output=$(psql -h ${NEXTCLOUD_DB} -U ${NEXTCLOUD_DB_USER} -t <<< ${sql})
+    echo "${output}"
+}
+
+function _print_help() {
+    echo "Create Nextcloud photo apps albums from folders"
+    echo ""
+    echo "Usage: $(basename $0) <options> -s <source-dir>"
+    echo "    -s <source-dir>  : source folder"
+    echo "    -d               : no dry run"
+}
+
+function _get_fileids () {
+    dir=$1
+    local -n result=$2
+    plist=()
+    IFS=$'\n'
+    for f in $(find $dir -type f); do
+        ff=$(realpath --relative-base="${NEXTCLOUD_DATADIR}/${NEXTCLOUD_USER}" "${f}")
+        plist+=("'${ff}', ")
+    done 
+    last=${plist[-1]}
+    last=${last:0:-2}
+    unset 'plist[${#plist[@]}-1]'
+    plist+=("${last}")
+    sql="select fileid from filecache where path in (${plist[@]});"
+    if [ $FLAG_DRYRUN -eq 0 ]; then
+        fids=$(query "${sql}")
+    fi
+    result=()
+    for fid in "${fids}"; do
+        cfid=${fid// /}
+        result+=(${cfid})
+    done
+}
+
+function _get_album_name () { 
+    dir=$1
+    dir_base=$(basename $(readlink -f $dir))
+    pdir_base=$(basename $(dirname $(readlink -f $dir)))
+    album_year=
+    album_month=
+    album_name=
+    if [[ ${dir_base} =~ ^[0-9]{4}-[0-9]{2}-[0-9]{2} ]]; then
+        album_year=${dir_base:0:4}
+        album_month=${dir_base:5:2}
+        album_name=${dir_base:10}
+    elif [[ ${dir_base} =~ ^[0-9]{4}-[0-9]{2} ]]; then
+        album_year=${dir_base:0:4}
+        album_month=${dir_base:5:2}
+        album_name=${dir_base:7}
+    elif [[ ${dir_base} =~ ^[0-9]{8} ]]; then
+        album_year=${dir_base:0:4}
+        album_month=${dir_base:4:2}
+        album_name=${dir_base:8}
+    elif [[ ${dir_base} =~ ^[0-9]{4} ]]; then
+        album_year=${dir_base:0:4}
+        album_name=${dir_base:5}
+    elif [[ ${pdir_base} =~ ^[0-9]{4}-[0-9]{2} ]]; then
+        album_year=${pdir_base:0:4}
+        album_month=${pdir_base:5:2}
+        album_name="${pdir_base:7} - ${dir_base}"
+    fi  
+    if [ -z "${album_year}" ] || [ -z "${album_name}" ]; then
+        return
+    fi
+    # clean album name
+    album_name=$(sed -r 's/^[ -_]//' <<< ${album_name}) # rstrip name
+    album_name=${album_name//_/ }
+    album_name=$(sed -r 's/\<./\U&/g' <<< ${album_name}) # upper case words
+    album_name=$(sed -r 's/-/ - /g' <<< ${album_name}) # introduce spaces around -
+    album_name=$(sed -r 's/[ ]{2,}/ /g' <<< ${album_name}) # remove too many spaces
+    #album_name_full="${album_name} ${album_year}"
+    if [ -z ${album_month} ]; then
+        album_name_full="${album_year} - ${album_name}"
+    else
+        album_name_full="${album_year} ${album_month} - ${album_name}"
+    fi
+    echo $album_name_full
+}
+
+
+function create_empty_album () {
+    name=$1
+    user=$2
+    time=$(date +%s)
+    sql="insert into photos_albums values (DEFAULT, '${name}', '${user}', ${time}, '', -1);"
+    if [ $FLAG_DRYRUN -eq 0 ]; then
+        output=$(query "${sql}")
+    fi  
+    sql="select last_value from photos_albums_album_id_seq;"
+    if [ $FLAG_DRYRUN -eq 0 ]; then
+        album_id=$(query "${sql}")
+    fi
+    echo $album_id
+}
+
+function add_files_to_album () {
+    album_id=$1
+    fileids=$2
+    time=$(date +%s)
+    sql_prefix="insert into photos_albums_files values "
+    sql_infix=""
+    for fid in ${fileids[@]}; do
+        sql_infix+="(DEFAULT, '${album_id}', '${fid}', ${time}, '${NEXTCLOUD_USER}'), "
+    done
+    sql="${sql_prefix}"
+    sql+="${sql_infix}"
+    sql="${sql:0:-2};"
+    if [ $FLAG_DRYRUN -eq 0 ]; then
+        output=$(query "${sql}")
+    fi  
+}
+
+
+function update_album_thumb () {
+    album_id=$1
+    fileid=$2
+    sql="update photos_albums set last_added_photo = ${fileid} where album_id = ${album_id};"
+    if [ $FLAG_DRYRUN -eq 0 ]; then
+        output=$(query "${sql}")
+    fi  
+}
+
+
+function share_album () {
+    album_id=$1
+    for cid in ${NEXTCLOUD_ALBUM_COLLABS[@]}; do
+        sql="insert into photos_albums_collabs values (DEFAULT, ${album_id}, '${cid}', 0);"
+        output=$(query "${sql}")
+    done
+}
+
+function import_album () {
+    dir=$1
+    album=$2
+    fileids=()
+    _get_fileids $dir fileids
+    album_id=$(create_empty_album "${album}" "${NEXTCLOUD_USER}")
+    add_files_to_album "${album_id}" ${fileids[@]}
+    update_album_thumb "${album_id}" ${fileids[-1]}
+    share_album "${album_id}"
+}
+
+
+# process input flags
+while true; do
+    case $1 in
+        -d)
+            FLAG_DRYRUN=0
+            shift;
+            ;;
+        -h)
+            _print_help
+            exit 0
+            ;;
+        -s)
+            shift
+            FLAG_SOURCE=$1
+            shift
+            ;;
+        *)
+            break
+            ;;
+    esac
+done
+
+# make sure input is correct
+if [ -z $FLAG_SOURCE ]; then
+    echo "You need to specify a source directory"
+    exit 1
+fi
+
+if [ -z $PGPASSWORD ]; then
+    echo "Please expose postgres password as PGPASSWORD"
+    exit 1
+fi
+
+
+for dir in $(find ${FLAG_SOURCE} -type d ! -empty -links 2); do
+    album=$(_get_album_name "${dir}")
+    if [ -z "${album}" ]; then
+        echo "Skipping ${dir}."
+    else    
+        echo "Creating album '${album}' for ${dir} ..."
+        if [ $FLAG_DRYRUN -eq 0 ]; then
+            import_album $dir "${album}"
+        fi
+    fi
+done