#!/bin/sh
# furt-lua/scripts/start.sh
# Start script for Furt Lua HTTP-Server

set -e

# Colors for output
RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[1;33m'
NC='\033[0m' # No Color

# Script directory (POSIX-compatible)
SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
PROJECT_DIR="$(dirname "$SCRIPT_DIR")"                 # für src/, cd
REPO_ROOT="$(dirname "$(dirname "$SCRIPT_DIR")")"      # für .env

echo -e "${GREEN}=== Furt Lua HTTP-Server Startup ===${NC}"

# Check required dependencies
echo -e "${YELLOW}Checking dependencies...${NC}"

# Load environment variables - Universal Config Detection
echo -e "${YELLOW}Loading environment variables...${NC}"
if [ -f "$REPO_ROOT/.env" ]; then
    echo -e "${GREEN}[OK]${NC} Loading from $REPO_ROOT/.env"
    export $(grep -v '^#' "$REPO_ROOT/.env" | grep -v '^$' | xargs)
elif [ -f "/usr/local/etc/furt/environment" ]; then
    echo -e "${GREEN}[OK]${NC} Loading from /usr/local/etc/furt/environment"
    export $(grep -v '^#' /usr/local/etc/furt/environment | grep -v '^$' | xargs)
elif [ -f "/etc/furt/environment" ]; then
    echo -e "${GREEN}[OK]${NC} Loading from /etc/furt/environment"
    export $(grep -v '^#' /etc/furt/environment | grep -v '^$' | xargs)
else
    echo -e "${YELLOW}[WARN]${NC} No config file found in project root or system"
fi

# Setup Lua from config (after loading environment)
LUA_CMD="${LUA_COMMAND:-lua51}"
LUA_VER="${LUA_VERSION:-5.1}"

# Check if configured Lua is installed (POSIX-compatible)
if ! [ -x "$LUA_CMD" ]; then
    echo -e "${RED}Error: $LUA_CMD is not installed${NC}"
    echo "Install with: pkg_add lua51 (OpenBSD) or apt install lua5.1 (Ubuntu)"
    exit 1
fi

# Check Lua version
LUA_VERSION_OUTPUT=$($LUA_CMD -v 2>&1 | head -n1)
echo -e "${YELLOW}Lua command:${NC} $LUA_CMD ($LUA_VERSION_OUTPUT)"

# Test lua-socket
$LUA_CMD -e "require('socket')" 2>/dev/null || {
    echo -e "${RED}Error: lua-socket not found for $LUA_CMD${NC}"
    echo "Install with: pkg_add lua51-socket (OpenBSD) or apt install lua-socket (Ubuntu)"
    exit 1
}
echo -e "${GREEN}✓${NC} lua-socket found"

# Test lua-cjson (system or luarocks)
LUA_PATH="$HOME/.luarocks/share/lua/$LUA_VER/?.lua;;" \
LUA_CPATH="$HOME/.luarocks/lib/lua/$LUA_VER/?.so;;" \
$LUA_CMD -e "require('cjson')" 2>/dev/null || {
    echo -e "${RED}Error: lua-cjson not found for $LUA_CMD${NC}"
    echo "Install with: pkg_add lua51-cjson (OpenBSD) or luarocks install lua-cjson"
    exit 1
}
echo -e "${GREEN}✓${NC} lua-cjson found"

# Test lua-ssl (optional for HTTPS)
LUA_PATH="$HOME/.luarocks/share/lua/$LUA_VER/?.lua;;" \
LUA_CPATH="$HOME/.luarocks/lib/lua/$LUA_VER/?.so;;" \
$LUA_CMD -e "require('ssl')" 2>/dev/null && {
    echo -e "${GREEN}✓${NC} lua-ssl found (HTTPS ready)"
} || {
    echo -e "${YELLOW}○${NC} lua-ssl not found (install with: luarocks install luaossl)"
}

# Check SMTP configuration (korrekte Variable-Namen)
if [ -n "$SMTP_USERNAME" ] && [ -n "$SMTP_PASSWORD" ]; then
    echo -e "${GREEN}[OK]${NC} SMTP configured: $SMTP_USERNAME"
else
    echo -e "${YELLOW}[WARN]${NC} SMTP credentials missing in .env"
    echo "Add SMTP_USERNAME and SMTP_PASSWORD to .env"
fi

# Change to project directory
cd "$PROJECT_DIR"

# Add current directory and luarocks to Lua path for requires (dynamic version)
export LUA_PATH="$PROJECT_DIR/src/?.lua;$PROJECT_DIR/?.lua;$HOME/.luarocks/share/lua/$LUA_VER/?.lua;;"
export LUA_CPATH="$HOME/.luarocks/lib/lua/$LUA_VER/?.so;;"

echo -e "${GREEN}Starting Furt HTTP-Server...${NC}"
echo -e "${YELLOW}Project directory:${NC} $PROJECT_DIR"
echo -e "${YELLOW}Lua paths configured for $LUA_CMD (version $LUA_VER)${NC}"
echo ""

# Start server
$LUA_CMD src/main.lua