#!/usr/bin/env fish
# Silo Deployment Script
# Deploys the Silo data dashboard to DigitalOcean droplet
#
# Usage:
#   fish deploy.fish          # Full deploy (server + dashboard, restarts service)
#   fish deploy.fish --dash   # Dashboard-only (uploads HTML, SIGHUP reload, zero downtime)

set RED '\033[0;31m'
set GREEN '\033[0;32m'
set YELLOW '\033[1;33m'
set NC '\033[0m'

set SCRIPT_DIR (dirname (status --current-filename))
set VAULT_DIR "$SCRIPT_DIR/../aesthetic-computer-vault"
set SSH_KEY "$VAULT_DIR/home/.ssh/id_rsa"
set SERVICE_ENV "$VAULT_DIR/silo/.env"
set SILO_HOST "silo.aesthetic.computer"
set SILO_USER "root"
set REMOTE_DIR "/opt/silo"

set DASH_ONLY false
if contains -- --dash $argv
    set DASH_ONLY true
end

# Check for required files
if not test -f $SSH_KEY
    echo -e "$RED x SSH key not found: $SSH_KEY$NC"
    exit 1
end

if not test -f $SERVICE_ENV; and test $DASH_ONLY = false
    echo -e "$RED x Service env not found: $SERVICE_ENV$NC"
    exit 1
end

# Test SSH connection
echo -e "$GREEN-> Testing SSH connection to $SILO_HOST...$NC"
if not ssh -i $SSH_KEY -o StrictHostKeyChecking=no -o ConnectTimeout=10 $SILO_USER@$SILO_HOST "echo ok" &>/dev/null
    echo -e "$RED x Cannot connect to $SILO_HOST$NC"
    exit 1
end
echo -e "$GREEN   Connected.$NC"

if test $DASH_ONLY = true
    # Dashboard-only deploy: upload HTML, send SIGHUP (no restart)
    echo -e "$GREEN-> Uploading dashboard.html (zero-downtime)...$NC"
    scp -i $SSH_KEY -o StrictHostKeyChecking=no \
        $SCRIPT_DIR/dashboard.html \
        $SILO_USER@$SILO_HOST:$REMOTE_DIR/

    ssh -i $SSH_KEY $SILO_USER@$SILO_HOST "
        chown silo:silo $REMOTE_DIR/dashboard.html
        kill -HUP \$(systemctl show -p MainPID --value silo)
    "
    echo -e "$GREEN   Dashboard reloaded (SIGHUP). No restart needed.$NC"
else
    # Full deploy: upload all files + restart
    echo -e "$GREEN-> Uploading silo files...$NC"
    scp -i $SSH_KEY -o StrictHostKeyChecking=no \
        $SCRIPT_DIR/server.mjs \
        $SCRIPT_DIR/bluesky-ingest.mjs \
        $SCRIPT_DIR/dashboard.html \
        $SCRIPT_DIR/package.json \
        $SCRIPT_DIR/package-lock.json \
        $SILO_USER@$SILO_HOST:$REMOTE_DIR/

    # Upload production .env from vault
    scp -i $SSH_KEY -o StrictHostKeyChecking=no \
        $SERVICE_ENV $SILO_USER@$SILO_HOST:$REMOTE_DIR/.env

    # Fix ownership, install deps if needed, restart
    echo -e "$GREEN-> Installing dependencies & restarting...$NC"
    ssh -i $SSH_KEY $SILO_USER@$SILO_HOST "
        chown -R silo:silo $REMOTE_DIR
        cd $REMOTE_DIR && npm install --production --silent 2>&1 | tail -1
        systemctl restart silo
        sleep 2
        systemctl is-active silo
    "

    set STATUS $status
    if test $STATUS -eq 0
        echo -e "$GREEN   Silo is running.$NC"
    else
        echo -e "$RED x Silo failed to start. Check logs:$NC"
        echo -e "$YELLOW   ssh -i $SSH_KEY $SILO_USER@$SILO_HOST journalctl -u silo -n 30$NC"
        exit 1
    end
end

echo ""
echo -e "$GREEN Done. Silo deployed to https://$SILO_HOST$NC"