#!/bin/bash
# Check for new bootc releases on GitHub
# Outputs release.env file with NEW_RELEASE, VERSION, and RELEASE_TAG variables

set -euo pipefail

readonly GITHUB_API="https://api.github.com/repos/containers/bootc/releases/latest"
readonly SPEC_FILE="bootc.spec"

log_info() {
    echo "[INFO] $*"
}

log_error() {
    echo "[ERROR] $*" >&2
}

# Fetch latest release from GitHub
log_info "Fetching latest release from GitHub..."
LATEST_RELEASE=$(curl -sL "$GITHUB_API" | jq -r '.tag_name')

if [[ -z "$LATEST_RELEASE" ]] || [[ "$LATEST_RELEASE" == "null" ]]; then
    log_error "Failed to fetch latest release from GitHub"
    exit 1
fi

# Strip 'v' prefix from tag (e.g., v1.5.2 -> 1.5.2)
LATEST_VERSION="${LATEST_RELEASE#v}"
log_info "Latest upstream release: $LATEST_VERSION ($LATEST_RELEASE)"

# Get current version from spec file
if [[ ! -f "$SPEC_FILE" ]]; then
    log_error "Spec file not found: $SPEC_FILE"
    exit 1
fi

CURRENT_VERSION=$(rpmspec -q --queryformat='%{version}\n' "$SPEC_FILE" 2>/dev/null | head -1)

if [[ -z "$CURRENT_VERSION" ]]; then
    log_error "Failed to parse version from spec file"
    exit 1
fi

log_info "Current spec version: $CURRENT_VERSION"

# Compare versions
if [[ "$LATEST_VERSION" != "$CURRENT_VERSION" ]]; then
    log_info "New release detected: $CURRENT_VERSION -> $LATEST_VERSION"
    cat > release.env <<EOF
NEW_RELEASE=true
VERSION=$LATEST_VERSION
RELEASE_TAG=$LATEST_RELEASE
CURRENT_VERSION=$CURRENT_VERSION
EOF
else
    log_info "No new release (current: $CURRENT_VERSION)"
    cat > release.env <<EOF
NEW_RELEASE=false
VERSION=$CURRENT_VERSION
RELEASE_TAG=$LATEST_RELEASE
CURRENT_VERSION=$CURRENT_VERSION
EOF
fi

cat release.env