start-new-dojo

#!/usr/bin/env bash
set -o errexit -o nounset -o pipefail
# set -o xtrace

COLOR_ORANGE="\x1B[1;33m"
COLOR_BLUE="\x1B[1;34m"
COLOR_RESET="\x1B[0m"

warn() {
    echo -e "${COLOR_ORANGE}${*}${COLOR_RESET}"
}

info() {
    echo -e "${COLOR_BLUE}${*}${COLOR_RESET}"
}

_get_first() {
    head -n1
}

last_readme() {
    ls -r -d 20*/*/*/README.md |
        _get_first |
        xargs cat
}

_filter_subjects() {
    grep -E "[[:digit:]]+[[:space:]]*-[[:space:]]*[[:alpha:]][[:space:]]*"
}

_sort_subjects() {
    sort -k2 -r -b -n
}

_extract_subject() {
    sed -E "s/^.*[[:digit:]]+[[:space:]]*-([[:space:]]*[[:alpha:]][[:space:]]*-)?[[:space:]]*//"
}

elected_subject() {
    _filter_subjects |
        _sort_subjects |
        _extract_subject |
        _get_first
}

create_today_folder() {
    TODAY="$1"

    mkdir -p "${TODAY}"
    cp README.md "${TODAY}/"
    git add --intent-to-add "${TODAY}/"
}

replace_in_place() {
    PATTERN="$1"
    FILE="$2"
    TEMPORARY_FILE="${FILE}_without_problem_on_mac_os_x"

    sed "${PATTERN}" <"${FILE}" >"${TEMPORARY_FILE}"
    mv "${TEMPORARY_FILE}" "${FILE}"
}

main() {
    LAST_SUBJECT=$(last_readme | elected_subject)
    info "the last elected subject was : ${LAST_SUBJECT}"

    TODAY=$(date "+%Y/%m/%d")
    info "create a new folder for today ${TODAY}"
    create_today_folder "${TODAY}"

    info "filling README with previous subject"
    replace_in_place "s/Ancien sujet/${LAST_SUBJECT}/" "${TODAY}/README.md"
}

main