#!/bin/bash
set -euo pipefail

# =============================================================================
# Deploy script for hm-o2e-tool
# Repo lives at /var/www/html/hm-o2e-tool — git pull IS the deployment
# Usage: ./deploy.sh  (run from anywhere, script detects its own location)
# Idempotent: safe to run on first deploy or any subsequent update
# =============================================================================

DEPLOY_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
BRANCH="main"
FILE_OWNER="vadym.samoilenko:vadym.samoilenko"

# -----------------------------------------------------------------------------

log() {
    echo "[$(date '+%Y-%m-%d %H:%M:%S')] $*"
}

error() {
    echo "[$(date '+%Y-%m-%d %H:%M:%S')] ERROR: $*" >&2
    exit 1
}

# -----------------------------------------------------------------------------
# Preflight checks
# -----------------------------------------------------------------------------

log "Starting deployment of hm-o2e-tool from $DEPLOY_DIR..."

[ -d "$DEPLOY_DIR/.git" ]          || error "Not a git repository: $DEPLOY_DIR"
[ -f "$DEPLOY_DIR/index.html" ]    || error "index.html not found in $DEPLOY_DIR"
[ -f "$DEPLOY_DIR/config.php" ]    || error "config.php not found in $DEPLOY_DIR"
command -v php >/dev/null 2>&1     || error "PHP is not installed or not in PATH"

# -----------------------------------------------------------------------------
# Pull latest code
# -----------------------------------------------------------------------------

log "Pulling latest code from origin/$BRANCH..."
git -C "$DEPLOY_DIR" fetch origin
git -C "$DEPLOY_DIR" reset --hard "origin/$BRANCH"
git -C "$DEPLOY_DIR" clean -fd

DEPLOYED_COMMIT=$(git -C "$DEPLOY_DIR" rev-parse --short HEAD)
log "Now at commit: $DEPLOYED_COMMIT"

# -----------------------------------------------------------------------------
# Set permissions
# -----------------------------------------------------------------------------

chown "$FILE_OWNER" "$DEPLOY_DIR/index.html" "$DEPLOY_DIR/config.php"
chmod 644 "$DEPLOY_DIR/index.html" "$DEPLOY_DIR/config.php"

log "Permissions set (owner: $FILE_OWNER, mode: 644)"

# -----------------------------------------------------------------------------
# Validate PHP syntax
# -----------------------------------------------------------------------------

php -l "$DEPLOY_DIR/config.php" >/dev/null 2>&1 \
    && log "config.php syntax OK" \
    || error "config.php has a PHP syntax error"

# -----------------------------------------------------------------------------
# Done
# -----------------------------------------------------------------------------

log "Deployment complete. Commit $DEPLOYED_COMMIT is live."