lb

#!/bin/bash
# log-book function, creates a template for working through problems.
# Requires a folder called logbook in the home directory
# Usage: lb <problem summary>

function open_file {
    FILENAME=$1
    LINE_JUMP=${2:-0}

    # if using some type of vim, go to the line where the current logbook begins
    # via the '+' parameter
    case ${EDITOR:-vi} in
        vi|nvim|vim) # vim and variants
            $EDITOR $FILENAME \+$LINE_JUMP
            ;;
        subl|atom) # Sublime Text and Atom
            $EDITOR $FILENAME:$LINE_JUMP
            ;;
        idea) # IntelliJ IDE
            $EDITOR --line $LINE_JUMP $FILENAME
            ;;
        *)
            ${EDITOR:-vi} $FILENAME
            ;;
    esac
}

function list {
    grep -B1 "^=\+" $LOGBOOK_DIR/*.md | grep "md-" | grep -Eo "/[0-9]{4}-[0-9]{2}-[0-9]{2}.*" | sed -e 's#\.md\-#|#' -e 's#^/##g' | awk -F'|' '$1!=prev{print $1;section+=1;entry=0;}{entry+=1; prev=$1; print "\t"section"."entry" "$2;}'
}

function entry_number_to_location {
    entry_no=$1
    SECTION_ENTRY=$(echo $entry_no | sed 's/\./\\./')
    ENTRY_TITLE=$(list | grep "^\s$SECTION_ENTRY" | sed -e 's#[[:space:]][0-9]*\.[0-9]* ##')
    fgrep -n "$ENTRY_TITLE" $LOGBOOK_DIR/*.md | grep -v "^README.md" | awk -F':' '{print $1, $2}'
}

if [ -z "$LOGBOOK_DIR" ]
then
    LOGBOOK_DIR=$HOME/logbook
fi

# create directory if it doesn't exist
mkdir -p $LOGBOOK_DIR

now=$(date '+%Y-%m-%d')

# if no parameters provided and logbook entries exist, open the logbook
# with the maximum date.
if [[ $# -eq 0 && $(ls $LOGBOOK_DIR | grep "^[0-9].*md$" | wc -l) -gt 0 ]]
then

    LATEST_ENTRY=$LOGBOOK_DIR/$(ls $LOGBOOK_DIR | grep "^[0-9].*md$" | sort | tail -n1)
    LATEST_UNFINISHED_ENTRY_LNO=$(nl -ba $LATEST_ENTRY | grep -E "(Completed|\s=+)" | grep -B1 "<use" | head -n1 | awk '{print $1-1}')
    open_file $LATEST_ENTRY $LATEST_UNFINISHED_ENTRY_LNO
    exit 0
elif [[ $# -eq 1 &&  ("$1" == "--help" || "$1" == "-h")  ]]
then
    echo "lb: a logbook utility
Usage: lb <title> | <command>


Commands:
lb <title>
    creates a new entry in the logbook

lb list
    lists the current logbook etries you've created, also annotates with [entry-number]s

lb goto [entry-number]
    jumps to the specified logbook entry

lb link [entry-number ...]
    provides links to the github/gitlab web pages where the entry can be found

lb search [grep-options] PATTERN
    runs grep against your logbook entries
"
    exit 0

elif [[ $# -eq 1 && "$1" == "list" ]]
then
    list
    exit 0

elif [[ $# -gt 1 && $1 == "link" ]]
then
    if [ ! -d "${LOGBOOK_DIR}/.git" ]
    then
        echo "Logbook dir ($LOGBOOK_DIR) is not a git respository."
        exit 1
    fi
    GIT_BASE_DIR=$(git --git-dir=$LOGBOOK_DIR/.git --work-tree=$LOGBOOK_DIR config --get remote.origin.url | awk -F'[@:/]+' '
    BEGIN{
        OFS="/"
    }/^ssh/{
        print $3, $5, $6
    }/^http/{
        print $2
    }/^git/{
        print $2, $3, $4
    }' | sed -e 's#\.git$##' -e 's#$#/blob/master/#')
    for entry_no in "${@:2}"
    do

        LOCATION=$(entry_number_to_location $entry_no)
        echo "http://"${GIT_BASE_DIR}$(echo $LOCATION | awk -F'[/ ]' '{print $(NF-1)}')"#L"$(echo $LOCATION | awk '{print $2}')
    done
    exit 0
elif [[ $# -gt 1 && $1 == "goto" ]]
then
    # escape any dots to prepare for grep
    LOCATION=$(entry_number_to_location $2)
    open_file $(echo $LOCATION | awk '{print $1}') $(echo $LOCATION | awk '{print $2}')
    exit 0
elif [[ $# -gt 1 && $1 == "search" ]]
then
    grep -n ${@:2} $LOGBOOK_DIR/*.md
    exit 0
elif [[ $# -eq 1 ]]
then
    printf "\n$1
$(printf "=%.0s" $(seq 1 ${#1}))
Started: $(date '+%Y-%m-%d %H:%M:%S')\n
### 1. Consider the problem you’re attempting to solve\n
### 2. Describe your method for solving it\n
### 3. Record what happened\n
### 4. How could it be improved?\n
Completed: <use: date '+%%Y-%%m-%%d %%H:%%M:%%S'>" >> $LOGBOOK_DIR/$now.md
elif [[ $# -gt 1 ]]
then
    echo "Error: too many parameters"
    echo "Usage: lb [<problem summary>]"
    exit 1
else
    echo "No entries found in $LOGBOOK_DIR. Create and entry via: lb <title>"
    exit 1
fi

open_file $LOGBOOK_DIR/$now.md $(nl -b a $LOGBOOK_DIR/$now.md | grep "$1$" | awk '{print $1}')