#!/usr/bin/env bash
#
# make-dos-zip.sh
# ================
# Packages already-built DOS cnotes binaries into a release zip.
#
# Assumes:
#   - You have already run make -f makefile.tc in DOSBox
#   - All .exe files + INSTALL.BAT are in the 'build/' directory
#
# Usage:
#   ./make-dos-zip.sh [version]
#
# Examples:
#   ./make-dos-zip.sh 0.1.1     → creates cnotes-v0.1.1-dos.zip
#   ./make-dos-zip.sh           → uses date as version (YYYYMMDD)
#

set -euo pipefail

VERSION="${1:-$(date +%Y%m%d)}"
ZIP_NAME="cnotes-v${VERSION}-dos.zip"
BUILD_DIR="BUILD"
DIST_DIR="dist-dos"

# Colors
GREEN='\033[0;32m'
RED='\033[0;31m'
NC='\033[0m'

echo -e "${GREEN}Packaging DOS release: ${ZIP_NAME}${NC}"

# 1. Check required files exist in build/
REQUIRED_FILES=(
    "CNADD.EXE"
    "CNDUMP.EXE"
    "CNCOUNT.EXE"
    "CNDEL.EXE"
    "CNFIND.EXE"
    "CNHELP.EXE"
    "INSTALL.BAT"
    "READ-DOS.TXT"
)

missing=0
for file in "${REQUIRED_FILES[@]}"; do
    if [ ! -f "${BUILD_DIR}/${file}" ]; then
        echo -e "${RED}Missing required file: ${BUILD_DIR}/${file}${NC}"
        missing=1
    fi
done

if [ $missing -eq 1 ]; then
    echo -e "${RED}Aborting: one or more required files are missing.${NC}"
    echo "Make sure you have built with 'make -f makefile.tc' in DOSBox"
    echo "and that INSTALL.BAT is present."
    exit 1
fi

# 2. Prepare clean staging directory
rm -rf "${DIST_DIR}"
mkdir -p "${DIST_DIR}"

# 3. Copy files to staging
echo "Staging files..."
cp "${BUILD_DIR}"/*.EXE "${DIST_DIR}"/
cp "${BUILD_DIR}/INSTALL.BAT" "${DIST_DIR}"/
cp "$$   {BUILD_DIR}/READ-DOS.TXT" "   $${DIST_DIR}"/ 2>/dev/null || {
    echo -e "$$   {RED}Warning: READ-DOS.TXT not found in build/ (optional but recommended)   $${NC}"
}

# Optional extras (uncomment/add if you have them)
# cp README-DOS.TXT "${DIST_DIR}"/  2>/dev/null || true
# cp LICENSE "${DIST_DIR}"/          2>/dev/null || true

# 4. Create zip
echo "Creating zip archive..."
cd "${DIST_DIR}"
zip -r -9 "../${ZIP_NAME}" . >/dev/null
cd ..

# 5. Optional SHA256
if command -v sha256sum >/dev/null 2>&1; then
    sha256sum "${ZIP_NAME}" > "${ZIP_NAME}.sha256"
    echo "Checksum: ${ZIP_NAME}.sha256"
elif command -v shasum >/dev/null 2>&1; then
    shasum -a 256 "${ZIP_NAME}" > "${ZIP_NAME}.sha256"
    echo "Checksum: ${ZIP_NAME}.sha256"
fi

# 6. Show result
echo -e "${GREEN}Done! Zip created:${NC}"
ls -lh "${ZIP_NAME}"*
echo ""
echo "Next steps:"
echo "  1. Upload ${ZIP_NAME} (and .sha256 if created) to Gitea release"
echo "  2. Optionally delete staging dir: rm -rf ${DIST_DIR}"