note.sh

#!/bin/sh

umask 077

# File extension for the notes
note_ext="md"

# Enable colors if stdout is a tty
if [ -t 1 ]
then
    col_info=$(tput setaf 4)
    col_warn=$(tput setaf 3)
    col_error=$(tput setaf 1)
    col_rst=$(tput sgr0)
fi

# Interactive if stdin is a tty
if [ -t 0 ]
then
    interactive=1
else
    interactive=0
fi

error() {
    echo "${col_error}Error:${col_rst} $@" >&2
}

abort() {
    error "$@"
    exit 1
}

if [ "$NOTES_DIR" = '' ]
then
    NOTES_DIR=$HOME/.notes
fi

if [ ! -d "$NOTES_DIR" ]
then
    error "'$NOTES_DIR' does not exist or isn't a directory"
    error "Create the directory or set NOTES_DIR in the environment"
    exit 1
fi
 
while getopts 'h' opt
do
  case $opt in
      *)
        echo "Usage: note [note-name]"
        echo ""
        echo "Note dir: $NOTES_DIR"
        echo ""
        echo "Set NOTE_DIR in your environment to change this path."
        echo
        echo "When called without an argument 'note' will start a full text"
        echo "search through all available notes using fzf"
        exit 1
        ;;
  esac
done

exec_open_note() {
    file="$NOTES_DIR/$1.$note_ext"

    if [ "$interactive" -eq 1 ]
    then
        exec $EDITOR "$NOTES_DIR/$1.$note_ext"
    else
        # Non interactive use, redirect stdin
        exec cat >> "$file"
    fi
}

dump_notes() {
    col_file=$(tput setaf 6)
    col_rst=$(tput sgr0)

    # Dump notes by modification time (more recent first)
    ls -tr "$NOTES_DIR" | while read file
    do
        clean_file=$(echo $file | sed "s/\.$note_ext\$//")
        full_file="$NOTES_DIR/$file"

        cat "$full_file" | sed "s,^,${col_file}${clean_file}${col_rst}: ,"
    done
}

if [ -n "$1" ]
then
    # We got a note name as argument, create or open it
    exec_open_note "$1"
else
    # No argument, start FZF to search through existing notes
    if [ "$interactive" -eq "1" ]
    then
        choice=$(dump_notes | fzf --ansi +m --height '50%' \
            --prompt="Search notes > ")

        if [ -z "$choice" ]
        then
            exit 1
        fi

        note=$(echo "$choice" | sed 's/: .*//')

        exec_open_note "$note"
    else
        abort "note without arguments when the input isn't a terminal"
    fi
fi