#!/bin/bash
source ~/.bashrc
# Git Server Setup Script (Gitea)
# Run this on the Git Server VM after OS installation

set -e

# Colors
RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[1;33m'
BLUE='\033[0;34m'
NC='\033[0m'

log_info() {
    echo -e "${GREEN}[INFO]${NC} $1"
}

log_warn() {
    echo -e "${YELLOW}[WARN]${NC} $1"
}

log_error() {
    echo -e "${RED}[ERROR]${NC} $1"
}

log_step() {
    echo -e "${BLUE}[STEP]${NC} $1"
}

# Check if running as root
if [ "$EUID" -ne 0 ]; then 
    log_error "Please run as root (use sudo)"
    exit 1
fi

GITEA_VERSION="${GITEA_VERSION:-1.21.0}"
GITEA_USER="${GITEA_USER:-git}"
GITEA_HOME="${GITEA_HOME:-/var/lib/gitea}"
GITEA_DOMAIN="${GITEA_DOMAIN:-192.168.1.121}"
GITEA_PORT="${GITEA_PORT:-3000}"

log_step "Step 1: Installing dependencies..."
apt-get update
apt-get install -y git sqlite3

log_step "Step 2: Creating Gitea user..."
useradd -r -s /bin/bash -m -d "$GITEA_HOME" "$GITEA_USER" || log_warn "User $GITEA_USER may already exist"

log_step "Step 3: Downloading and installing Gitea..."
mkdir -p "$GITEA_HOME"
cd "$GITEA_HOME"
wget -O gitea "https://dl.gitea.io/gitea/${GITEA_VERSION}/gitea-${GITEA_VERSION}-linux-amd64"
chmod +x gitea
chown -R "$GITEA_USER:$GITEA_USER" "$GITEA_HOME"

log_step "Step 4: Creating systemd service..."
cat > /etc/systemd/system/gitea.service <<EOF
[Unit]
Description=Gitea (Git with a cup of tea)
After=network.target

[Service]
Type=simple
User=$GITEA_USER
Group=$GITEA_USER
WorkingDirectory=$GITEA_HOME
ExecStart=$GITEA_HOME/gitea web --config $GITEA_HOME/custom/conf/app.ini
Restart=always
RestartSec=5s

[Install]
WantedBy=multi-user.target
EOF

log_step "Step 5: Creating initial configuration..."
mkdir -p "$GITEA_HOME/custom/conf"
cat > "$GITEA_HOME/custom/conf/app.ini" <<EOF
[server]
DOMAIN = $GITEA_DOMAIN
HTTP_PORT = $GITEA_PORT
ROOT_URL = http://$GITEA_DOMAIN:$GITEA_PORT/
DISABLE_SSH = false
SSH_PORT = 22

[database]
DB_TYPE = sqlite3
PATH = $GITEA_HOME/data/gitea.db

[repository]
ROOT = $GITEA_HOME/gitea-repositories

[log]
MODE = file
LEVEL = Info
EOF

chown -R "$GITEA_USER:$GITEA_USER" "$GITEA_HOME"

log_step "Step 6: Enabling and starting Gitea..."
systemctl daemon-reload
systemctl enable gitea
systemctl start gitea
sleep 3
systemctl status gitea --no-pager

log_info "========================================="
log_info "Gitea Installation Complete!"
log_info "========================================="
echo ""
log_info "Access Gitea at: http://$GITEA_DOMAIN:$GITEA_PORT"
log_info "Initial setup will be required on first access"
echo ""
log_info "Next steps:"
echo "  1. Complete initial Gitea setup via web UI"
echo "  2. Create GitOps repository"
echo "  3. Configure SSH keys for Git access"
echo "  4. Set up Flux GitOps (if using)"