#!/usr/bin/env bash

VERSION="0.0.2"
PROGRAM="$(basename $0)"

[ -f "${WDRC:-"$HOME/.wdrc"}" ] && source "${WDRC:-"$HOME/.wdrc"}"

WD_NOTES_DIR=${WD_NOTES_DIR:-"$HOME/notes"}
WD_JOURNALS_DIR=${WD_JOURNALS_DIR:-"$WD_NOTES_DIR/journals"}

year=$(date +%Y)
week_number=$(date +%W)

cmd_usage () {
    cat <<-_EOF
Usage:

    $PROGRAM journal 
    $PROGRAM edit
    $PROGRAM git [<args>]
        Run git command in $WD_NOTES_DIR

_EOF
    exit 0
}

cmd_version () {
    echo $VERSION
    exit 0
}

cmd_edit () {
    $EDITOR "$WD_NOTES_DIR/index.md"

    exit 0
}

cmd_journal () {
    local weekly_journal_title="# Week $week_number $year"
    local weekly_journal_subtitle="## $(date '+%Y-%m-%d %A')"

    local monthly_journal_title="# $(date '+%B %Y')"
    local monthly_journal_subtitle="## [Week $week_number $year](week$week_number.md)"

    local weekly_journal="$WD_JOURNALS_DIR/$year/week$week_number.md"
    local monthly_journal="$WD_JOURNALS_DIR/$year/$(date '+%Y-%m').md"

    local file_to_edit="$weekly_journal"
    local file_title="$weekly_journal_title"
    local file_subtitle="$weekly_journal_subtitle"

    case "$1" in 
        --monthly|-m) shift;
            file_to_edit="$monthly_journal"
            file_title="$monthly_journal_title"
            file_subtitle="$monthly_journal_subtitle"
            ;;
    esac

    [ ! -f "$file_to_edit" ] && echo "$file_title" > "$file_to_edit"
    grep -qF "$file_subtitle" "$file_to_edit" || echo "$file_subtitle" >> "$file_to_edit"

    $EDITOR "$file_to_edit"

    exit 0
}

cmd_git () {
    cd "$WD_NOTES_DIR" && git "$@"
}

case "$1" in
    help|--help|-h) shift; cmd_usage "$@";;
    version|--version|-v) shift; cmd_version "$@";;
    journal|j) shift; cmd_journal "$@";;
    edit|e) shift; cmd_edit "$@";;
    git|g) shift; cmd_git "$@" ;;
    *) cmd_usage "$@";;
esac

exit 0