.envrc

#!/bin/sh

update_dotenv() {
    var_name="$1"
    var_value="$2"

    if grep -qE "^${var_name}=.*$" .env; then
        sed_script="$(printf 's#^%s=.*$#%s#g\n' "${var_name}" "${var_name}=${var_value}")"
        sed -i.bak "${sed_script}" .env || (
            sed "${sed_script}" .env >/tmp/env
            cp /tmp/env ./.env
        )
    else
        printf '%s=%s\n' "${var_name}" "${var_value}" >>.env
    fi
}

if command -v poetry >/dev/null; then

    test -f poetry.lock || poetry install

    touch .poetry.lock.md5 # create an empty file if it doesn't exist to protect the following command

    if command -v md5sum >/dev/null; then
        md5sum=md5sum
    else
        md5sum="md5 -r"
    fi

    # hash `poetry.lock` and compare it to the last time dependencies were installed
    MD5_LAST="$(cut -d' ' -f1 <.poetry.lock.md5)"
    MD5_CURRENT="$($md5sum poetry.lock | cut -d' ' -f1)"

    if [ "$MD5_LAST" != "$MD5_CURRENT" ]; then
        printf '🚀 Detected changes in \033[0;36mpoetry.lock\033[0m; installing dependencies\n'
        poetry install && echo "$MD5_CURRENT" >.poetry.lock.md5

        # display environment info
        poetry env info
    fi

    # shellcheck disable=SC1091
    test -f "$(poetry env info -p)/bin/activate" && . "$(poetry env info -p)/bin/activate"

    # shellcheck disable=SC2154
    test -z "${PRE_COMMIT_DISABLED}" &&
        command -v pre-commit >/dev/null &&
        pre-commit install --install-hooks
fi

test -f .env || cp etc/base.env .env

ci_commit_short_sha="$(git rev-parse --short=8 HEAD)"
export CI_COMMIT_SHORT_SHA="${ci_commit_short_sha}"

test -n "$PYSPRY_TAG" || export PYSPRY_TAG="${CI_COMMIT_SHORT_SHA}"
update_dotenv "PYSPRY_TAG" "${PYSPRY_TAG}"

pyspry_branch_tag="$(git branch --show-current | tr -d '\n' | tr -c '[:alnum:]' '-')"
export PYSPRY_BRANCH_TAG="${pyspry_branch_tag}"

# ⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯
# export the environment variables into the current shell
write_env_script() {
    # Write the variables defined in the given 'dotenv' file to a source-able script for export.
    dotenv_file="$1"
    output_file="$2"

    grep -vE "^#" "$dotenv_file" |   # strip comment lines
        grep -oE "^.{1,}=[^#]{1,}" | # filter to only lines with an '=', stripping EOL comments
        sed "s/[\`'\"]//g" |         # remove any quotes or backticks
        while read -r line; do
            var_name="${line%=*}"
            var_value="${line#*=}"

            # surround each value in quotes
            printf '%s="%s"\n' "${var_name}" "${var_value}" >>"$output_file"
        done
}

# shellcheck disable=SC1091
test -f .env &&
    write_env_script .env tmp.env &&
    set -o allexport &&
    . ./tmp.env &&
    set +o allexport &&
    rm tmp.env