#!/usr/bin/env bash
#
# update_pot_files — extract translatable strings from the KCM source, update
# all per-language .po files, and regenerate any compiled .mo files.
#
# Run this script whenever you add or change translatable strings in:
#   - kwin/src/kcm/*.cpp / *.h  (i18n(), I18N_NOOP(), …)
#   - kwin/src/kcm/*.ui         (Qt Designer UI files)
#
# Requirements:
#   extractrc   – part of kdesdk-scripts  (Debian/Ubuntu: kdesdk-scripts)
#   xgettext    – part of gettext
#   msgmerge    – part of gettext
#   msgfmt      – part of gettext
#
# Quick install on Debian/Ubuntu:
#   sudo apt-get install kdesdk-scripts gettext

set -euo pipefail

SCRIPT_DIR=$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" &>/dev/null && pwd)

# Operate from the kwin/ root so relative paths in the .pot match src/
pushd "$SCRIPT_DIR/.." > /dev/null

if ! command -v extractrc &>/dev/null; then
    echo "ERROR: 'extractrc' not found." >&2
    echo "Install it with: sudo apt-get install kdesdk-scripts" >&2
    popd > /dev/null
    exit 1
fi

if ! command -v xgettext &>/dev/null || ! command -v msgmerge &>/dev/null || ! command -v msgfmt &>/dev/null; then
    echo "ERROR: gettext tools not found (xgettext, msgmerge, msgfmt)." >&2
    echo "Install them with: sudo apt-get install gettext" >&2
    popd > /dev/null
    exit 1
fi

DOMAIN="breezy_desktop_kwin"
POT="po/${DOMAIN}.pot"
TMP_RC=$(mktemp /tmp/kcm-rc-XXXXXX.cpp)
trap 'rm -f "$TMP_RC"' EXIT

# 1. Extract strings from Qt Designer .ui files via extractrc, which converts
#    them into i18n() C++ calls that xgettext understands.
extractrc src/kcm/*.ui > "$TMP_RC"

# 2. Extract all translatable strings into the .pot template.
xgettext \
    --from-code=UTF-8 \
    --language=C++ \
    -ki18n:1 -ki18nc:1c,2 -ki18np:1,2 -ki18ncp:1c,2,3 \
    -kki18n:1 -kki18nc:1c,2 -kki18np:1,2 -kki18ncp:1c,2,3 \
    -kI18N_NOOP:1 -kI18N_NOOP2:1c,2 -kI18NC_NOOP:1c,2 \
    -ktr2i18n:1 \
    --package-name="breezy-desktop" \
    --msgid-bugs-address="https://github.com/wheaney/breezy-desktop/issues" \
    -o "$POT" \
    src/kcm/*.cpp src/kcm/*.h "$TMP_RC"

echo "Updated $POT"

# 3. Merge the updated template into each per-language .po file and recompile.
for lang in $(cat po/LINGUAS); do
    PO="po/${lang}/${DOMAIN}.po"
    mkdir -p "po/${lang}"
    if [ -f "$PO" ]; then
        msgmerge --no-fuzzy-matching --update "$PO" "$POT"
    else
        msginit --no-translator --locale="${lang}" --input="$POT" --output="$PO"
    fi

    # Compile to binary .mo for local testing
    outdir="po/${lang}/LC_MESSAGES"
    mkdir -p "$outdir"
    msgfmt -o "$outdir/${DOMAIN}.mo" "$PO"
done

popd > /dev/null