#!/usr/bin/env sh
# Little script which moves some tags to specific folders.
#
# These 'folder-tags' (e.g. trash, archive, inbox) are transient tags
# which then get removed when the file is in the correct folder.
#
# So later when trying to find the emails always use the 'folder:< >'
# notmuch search, not the 'tag:< >' search - as the tag only signals that
# an e-mail is currently still in the 'wrong' folder and a move action
# is necessary.

MAIL_DIR="$MAIL_PATH"
MAIL_DIR="${XDG_DOCUMENTS_DIR:-$HOME/documents}/mail"

# all folders: -archive -drafts +inbox -jobs -junk -receipts -sent -trash

# idea: archive, inbox, trash, sent -> transient tags
#       if anything is tagged, it should be moved into the folder and the tag removed.
#       Transient tags describe the _type_ of a message (essentially its importance to me)
#
#       jobs, junk, receipts -> describe _what_ a message is (topics etc)
#       -> stable tags, which stay on a message

move_and_untag() {
  tag_to_remove=$1 # e.g. trash
  folder=$2        # e.g. Trash
  filter="tag:$tag_to_remove not folder:$folder"
  id_list=$(notmuch search --output=messages --format=text "$filter")
  # echo "Moving $(notmuch count "$filter") messages to $folder." # TODO: optional loud mode?
  notmuch search --output=files --format=text0 "$filter" | xargs -0 --no-run-if-empty mv -t "$MAIL_DIR/$folder/new/"
  if [ "$id_list" != "" ]; then
    echo "$id_list" | sed -e "s/^/-$tag_to_remove -- /" | notmuch tag --batch
  fi
}

move_and_untag trash Trash
move_and_untag inbox Inbox
move_and_untag archive Archive
move_and_untag sent Sent