#!/usr/bin/env bash

set -u

echo
echo "========================================"
echo " Debian Locale Configuration Script"
echo "========================================"
echo

for CTID in $(pct list | awk 'NR>1 {print $1}'); do

    STATUS=$(pct status "$CTID" 2>/dev/null | awk '{print $2}')

    echo "----------------------------------------"
    echo "Container: $CTID"
    echo "Status:    $STATUS"

    if [[ "$STATUS" != "running" ]]; then
        echo "SKIP: Container is not running."
        continue
    fi

    OS_ID=$(pct exec "$CTID" -- sh -c \
        '. /etc/os-release 2>/dev/null && echo "$ID"' \
        2>/dev/null || true)

    OS_NAME=$(pct exec "$CTID" -- sh -c \
        '. /etc/os-release 2>/dev/null && echo "$PRETTY_NAME"' \
        2>/dev/null || true)

    echo "OS:        ${OS_NAME:-Unknown}"

    if [[ "$OS_ID" != "debian" ]]; then
        echo "SKIP: Not Debian."
        continue
    fi

    echo "Configuring en_US.UTF-8..."

    if ! pct exec "$CTID" -- sh -c "
        sed -i 's/^# *en_US.UTF-8 UTF-8/en_US.UTF-8 UTF-8/' /etc/locale.gen &&
        locale-gen &&
        update-locale LANG=en_US.UTF-8
    "; then
        echo "ERROR: Locale configuration failed in container $CTID."
        continue
    fi

    echo "OK: Locale configured."

    echo "Current locale:"
    pct exec "$CTID" -- sh -c 'locale | grep -E "^LANG=" || true'

    echo
done

echo "========================================"
echo " Finished"
echo "========================================"