#!/usr/bin/env bash
set -euo pipefail

# ============================================================
# X-Financial Reimbursement Admin - Start Script
# ============================================================

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
cd "$SCRIPT_DIR"

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

info()  { echo -e "${GREEN}[INFO]${NC} $*"; }
warn()  { echo -e "${YELLOW}[WARN]${NC} $*"; }
error() { echo -e "${RED}[ERROR]${NC} $*"; exit 1; }

# ----------------------------------------------------------
# Check Node.js
# ----------------------------------------------------------
if ! command -v node &>/dev/null; then
    error "Node.js is not installed. Install it first: https://nodejs.org"
fi

if ! command -v npm &>/dev/null; then
    error "npm is not installed. It should come with Node.js."
fi

info "Node.js $(node -v) | npm $(npm -v)"

# ----------------------------------------------------------
# Detect WSL + Windows node_modules platform mismatch
# ----------------------------------------------------------
is_wsl() {
    grep -qi microsoft /proc/version 2>/dev/null
}

check_platform_mismatch() {
    local rollup_dir="node_modules/@rollup"
    if [ ! -d "$rollup_dir" ]; then
        return 1
    fi
    # List installed rollup platform packages
    local platforms
    platforms="$(ls -1 "$rollup_dir" 2>/dev/null | grep -E '^rollup-(win|linux)')"
    if [ -z "$platforms" ]; then
        return 1
    fi
    # Running on WSL/Linux but has Windows rollup bindings
    if echo "$platforms" | grep -q "win32"; then
        return 0
    fi
    return 1
}

# ----------------------------------------------------------
# Install dependencies if node_modules is missing or mismatched
# ----------------------------------------------------------
NEED_INSTALL=false

if [ ! -d "node_modules" ]; then
    warn "node_modules not found"
    NEED_INSTALL=true
elif is_wsl && check_platform_mismatch; then
    warn "Detected WSL with Windows node_modules (rollup platform mismatch)"
    warn "Removing node_modules to reinstall with correct platform bindings..."
    # WSL can't delete locked Windows .exe/.node files, use PowerShell instead
    WIN_PATH="$(wslpath -w "$SCRIPT_DIR")"
    if command -v powershell.exe &>/dev/null; then
        powershell.exe -NoProfile -Command "Remove-Item -Recurse -Force '${WIN_PATH}\\node_modules','${WIN_PATH}\\package-lock.json'" 2>/dev/null || true
    elif command -v cmd.exe &>/dev/null; then
        cmd.exe /c "rd /s /q \"${WIN_PATH}\\node_modules\"" 2>/dev/null || true
        cmd.exe /c "del /f /q \"${WIN_PATH}\\package-lock.json\"" 2>/dev/null || true
    else
        rm -rf node_modules package-lock.json 2>/dev/null || true
    fi
    # Fallback: clean up anything remaining via WSL
    rm -rf node_modules package-lock.json 2>/dev/null || true
    NEED_INSTALL=true
fi

if [ "$NEED_INSTALL" = true ]; then
    info "Running npm install..."
    npm install
fi

# ----------------------------------------------------------
# Start dev server
# ----------------------------------------------------------
info "Starting X-Financial Reimbursement Admin..."
info "Access: http://127.0.0.1:5173"
echo ""

exec npm start