#!/bin/bash
# Devin AUR package updater

set -e

PKGDIR="$(dirname "$0")"
PKGBUILD="$PKGDIR/PKGBUILD"
SRCINFO="$PKGDIR/.SRCINFO"

# Colors
RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[1;33m'
NC='\033[0m' # No Color

# Get current version from PKGBUILD
current_ver=$(grep -E '^pkgver=' "$PKGBUILD" | cut -d= -f2)
echo "Current PKGBUILD version: $current_ver"

# Fetch latest version from apt repository
echo "Checking Devin repository..."
latest_info=$(curl -s "https://windsurf-stable.codeiumdata.com/wVxQEIWkwPUEAGf3/apt/dists/stable/main/binary-amd64/Packages.gz" | zcat)
latest_ver=$(echo "$latest_info" | grep -A1 "Package: devin-desktop" | grep "Version:" | head -1 | sed 's/Version: \([0-9.]*\).*/\1/')
deb_path=$(echo "$latest_info" | grep -A20 "Package: devin-desktop" | grep "Filename:" | head -1 | sed 's/Filename: //')

if [[ -z "$latest_ver" ]]; then
    echo -e "${RED}Error: Could not fetch latest version${NC}"
    exit 1
fi

echo "Latest available version: $latest_ver"

# Compare versions
if [[ "$current_ver" == "$latest_ver" ]]; then
    echo -e "${GREEN}Already up to date!${NC}"
    exit 0
fi

# Check if latest is newer (simple version comparison)
if printf '%s\n%s\n' "$current_ver" "$latest_ver" | sort -V -C; then
    echo -e "${YELLOW}Update available: $current_ver → $latest_ver${NC}"
else
    echo -e "${YELLOW}Repository version ($latest_ver) is older than PKGBUILD ($current_ver)${NC}"
    echo "Skipping update."
    exit 0
fi

# Download and calculate SHA256
deb_url="https://windsurf-stable.codeiumdata.com/wVxQEIWkwPUEAGf3/apt/${deb_path}"
echo ""
echo "Downloading ${latest_ver} for SHA256 verification..."
echo "URL: $deb_url"

new_sha256=$(curl -sL "$deb_url" | sha256sum | cut -d' ' -f1)

if [[ -z "$new_sha256" ]] || [[ ${#new_sha256} -ne 64 ]]; then
    echo -e "${RED}Error: Failed to calculate SHA256${NC}"
    exit 1
fi

echo ""
echo "New SHA256: $new_sha256"
echo ""

# Show diff
echo "Proposed changes:"
echo "  PKGBUILD: pkgver=$latest_ver"
echo "  PKGBUILD: sha256sums=('$new_sha256' ...)"
echo ""

# Ask for confirmation
read -p "Update PKGBUILD? [Y/n] " -n 1 -r
echo ""

if [[ ! $REPLY =~ ^[Yy]$ ]] && [[ -n $REPLY ]]; then
    echo "Update cancelled."
    exit 0
fi

# Update PKGBUILD
echo "Updating PKGBUILD..."
sed -i "s/^pkgver=.*/pkgver=$latest_ver/" "$PKGBUILD"
sed -i "s/sha256sums=('[^']*'/sha256sums=('$new_sha256'/" "$PKGBUILD"
sed -i "s/^pkgrel=.*/pkgrel=1/" "$PKGBUILD"

echo -e "${GREEN}Updated to version $latest_ver${NC}"
echo ""
echo "Review changes with: git diff"
echo "Build with: paru -Bi ."