#!/usr/bin/eval bash

PROTON_TARGET="/Users/hb/mnt/nas/backups/div"
PROTON_TARGET_FILE="proton_mail_pass.$EXT"
PROTON_ROOT="/Users/hb/Downloads"
PROTON_BACKUP_DIR="Proton_Backup"
PROTON_BACKUP="$PROTON_ROOT/$PROTON_BACKUP_DIR"
PROTON_MAIL_EXPORT="$PROTON_ROOT/proton-mail-export-cli"
PROTON_PASS_EXPORT="$PROTON_ROOT/Proton Pass_export"

check_proton() {
    if [ ! -d "$PROTON_MAIL_EXPORT" ]; then
        mail_log $ERROR "$ERR there is no Proton Mail export."
        return 1
    fi
    # tr ist nötig, weil bei macOS führene blanks entfernt werden müssen
    if [ "$(ls "$PROTON_PASS_EXPORT"*|wc -l|tr -d ' ')" != "1" ]; then
        mail_log $ERROR "$ERR there is no Proton Pass export."
        return 1
    fi
    if [ ! -d "$PROTON_TARGET" ]; then
        mail_log $ERROR "$ERR could not find targe dir $PROTON_TARGET!"
        return 1
    fi
    if [ -f "$PROTON_TARGET/$PROTON_TARGET_FILE" ]; then
        log $DEBUG "$DBG > rm -f \"$PROTON_TARGET/$PROTON_TARGET_FILE\""
        rm -f "$PROTON_TARGET/$PROTON_TARGET_FILE" >>$LOG_FILE 2>&1
    fi
}

delete_proton_backup_dir() {
    log $DEBUG "$DBG delete_proton_backup_dir()"
    if [ -d "$PROTON_BACKUP" ]; then
        log $DEBUG "$DBG > rm -rf \"$PROTON_BACKUP\""
        rm -rf "$PROTON_BACKUP" >>$LOG_FILE 2>&1 && return 0
    fi
    return 1
}

create_proton_backup_dir() {
    log $DEBUG "$DBG create_proton_backup_dir()"
    delete_proton_backup_dir

    log $DEBUG "$DBG > mkdir -p \"$PROTON_BACKUP\""
    mkdir -p "$PROTON_BACKUP" >>$LOG_FILE 2>&1 && return 0
    return 1
}

move_proton_exports() {
    log $DEBUG "$DBG move_proton_exports()"

    log $DEBUG "$DBG > mv \"$PROTON_MAIL_EXPORT\" \"$PROTON_BACKUP\""
    mv "$PROTON_MAIL_EXPORT" "$PROTON_BACKUP" >>$LOG_FILE 2>&1
    if [ $? -ne 0 ]; then return 1; fi

    log $DEBUG "$DBG > mv \"$PROTON_PASS_EXPORT\"* \"$PROTON_BACKUP\""
    mv "$PROTON_PASS_EXPORT"* "$PROTON_BACKUP" >>$LOG_FILE 2>&1
    if [ $? -ne 0 ]; then return 1; fi
}

do_proton_backup() {
    log $DEBUG "$DBG do_proton_backup()"

    mail_log $INFO "$INF checking environment"
    check_proton
    is_error $? && return 1

    mail_log $INFO "$INF create $PROTON_BACKUP"
    create_proton_backup_dir
    is_error $? && return 1

    mail_log $INFO "$INF move Proton exports to source directory"
    move_proton_exports
    is_error $? && return 1

    mail_log $INFO "$INF backing up Proton exports to $PROTON_TARGET/$PROTON_TARGET_FILE"
    backup_directory "$PROTON_ROOT" "$PROTON_TARGET/$PROTON_TARGET_FILE" "$PROTON_BACKUP_DIR"
    is_error $? && return 1
}

proton_backup() {
    mail_log $INFO ">>>>>>>>>> Proton backup $VER at $HOST_NAME <<<<<<<<<<"
    do_proton_backup

    mail_log $INFO "$INF deleting $PROTON_BACKUP"
    delete_proton_backup_dir
    is_error $?
    
    mail_log $DEBUG "$DBG rm -f \"$PROTON_PASS_EXPORT\"*"
    mail_log $DEBUG "$(rm -f "$PROTON_PASS_EXPORT"* 2>&1)"

    mail_log $INFO ">>>>>>>>>> end of Proton backup"
    send_mail_log "Proton Backup"   
}