#!/usr/bin/env sh

set -e

usage() {
    printf "Usage: %s [build|staging|prod|local]\n\n  build   - Build the blog with mdbook\n  staging - Deploy to local staging environment (/srv/www/stage.binning.net)\n  prod    - Deploy to production server via SSH (www.binning.net)\n  local   - Deploy directly to /srv/www/binning.net (used by Forgejo CI runner)\n\nExample:\n  %s build\n  %s staging\n  %s prod\n  %s local\n" "$0" "$0" "$0" "$0" "$0"
    exit 1
}

if [ $# -eq 0 ]; then
    printf "Error: No command specified\n"
    usage
fi

CMD=$1

case $CMD in
    build)
        printf "Building blog with mdbook...\n"
        [ -s src ] || ln -s /var/lib/www src
        mdbook build
        printf "✓ Build complete!\n"
        ;;

    staging)
        printf "Deploying to STAGING environment...\n"

        STAGING_PATH="/srv/www/stage.binning.net"

        sudo mkdir -p ${STAGING_PATH}

        printf "Deploying website files...\n"
        sudo rsync -av --delete blog/ ${STAGING_PATH}/

        sudo chown -R nginx:nginx ${STAGING_PATH}/

        printf "✓ Staging deployment complete!\n  Files deployed to: %s\n\nTo activate nginx, import staging.nginx.nix into your local NixOS config\nand run: sudo nixos-rebuild switch\n" "${STAGING_PATH}"
        ;;

    prod)
        printf "Deploying to PRODUCTION environment...\n"

        REMOTE_HOST="crossbox"
        REMOTE_USER="brimlock"
        REMOTE_PATH="/srv/www/binning.net"

        if ! ssh -o BatchMode=yes -o ConnectTimeout=5 ${REMOTE_USER}@${REMOTE_HOST} exit 2>/dev/null; then
            printf "Warning: SSH connection test failed. Ensure SSH keys are configured.\nYou may be prompted for a password.\n"
        fi

        printf "Deploying website files...\n"
        ssh ${REMOTE_USER}@${REMOTE_HOST} "mkdir -p /tmp/blog-deploy"
        rsync -avz --delete blog/ ${REMOTE_USER}@${REMOTE_HOST}:/tmp/blog-deploy/
        ssh ${REMOTE_USER}@${REMOTE_HOST} "sudo rsync -avz --delete /tmp/blog-deploy/ ${REMOTE_PATH}/ && \
            sudo chown -R nginx:nginx ${REMOTE_PATH}/ && \
            printf 'Content deployed.\n'"

        printf "✓ Production deployment complete!\n\nNginx configuration is managed by the nixos-config flake (hosts/crossbox/nginx.nix).\n"
        ;;

    local)
        printf "Deploying locally to production path...\n"

        LOCAL_PATH="/srv/www/binning.net"

        printf "Deploying website files...\n"
        rsync -av --delete blog/ ${LOCAL_PATH}/

        printf "✓ Local deployment complete!\n  Files deployed to: %s\n" "${LOCAL_PATH}"
        ;;

    *)
        printf "Error: Invalid command '%s'\n" "$CMD"
        usage
        ;;
esac