addto

#!/bin/bash
# Modifies the behavior of the addto command in the following ways:
#   - If the file doesn't exist, but it is in the form YYYY-MM-DD, then create
#     the file before running the original addto.
#   - Automatically adds .txt to the end of the filename
#   - Allow 'tomorrow' as a filename
#
# Copyright (C) 2013 Mark Harrison
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.

ACTION=$1

if [[ $ACTION == "usage" ]]; then
    echo '    addto DEST "TEXT TO ADD"'
    echo "      Adds a line of text to a different todo file"
    exit
fi

shift
FILE=$1
shift

# Linux uses GNU date, while OS X uses BSD date.
_get_tomorrow_file () {
    DAY=$(date +%w)
    if [[ "$OSTYPE" == "linux-gnu" ]]; then
        if [[ $DAY == "5" ]]; then
            # Friday, skip to next Monday
            MODIFIER="next monday"
        else
            MODIFIER="tomorrow"
        fi
        FILE=$(date --date="$MODIFIER" +%Y-%m-%d)
    elif [[ "$OSTYPE" == "darwin"* ]]; then
        if [[ $DAY == "5" ]]; then
            # Friday, skip to next Monday
            MODIFIER="+Mon"
        else
            MODIFIER="+1d"
        fi
        FILE=$(date -v$MODIFIER +%Y-%m-%d)
    else
            # Unknown.
            echo "Only Linux and OS X are supported currently";
            exit 1;
    fi
}

# Deal with 'tomorrow' as a filename
if [[ $FILE == 'tomorrow' ]]; then
    # Set $FILE
    _get_tomorrow_file
fi

# Make sure the filename has a .txt extension on the end
FILE=${FILE/.txt}.txt

if [[ ! -f $TODO_DIR/$FILE ]]; then
    if [[ $FILE =~ ^[0-9]{4}-[0-9]{2}-[0-9]{2}\.txt$ ]]; then
        # File looks like a date, create it
        touch $TODO_DIR/$FILE
    fi
fi

$TODO_FULL_SH command addto $FILE "$@"