#!/bin/bash
set -euo pipefail

# Make public writable so env.sh can write env-config.js
chmod -R a+rw ./public || true

# Run env.sh if present
if [ -x ./env.sh ]; then
  ./env.sh || true
fi

# Copy nginx config from mounted source if available so dev config can be
# edited on the host without rebuilding the image. Priority:
# 1) ./conf/conf.d/default.conf (project's conf folder)
# 2) ./nginx.dev.conf (bundled with the dev image at build time)
if [ -f /app/conf/conf.d/default.conf ]; then
  echo "Using nginx config from /app/conf/conf.d/default.conf (creating dev variant)"
  # Backup original
  cp /app/conf/conf.d/default.conf /app/conf/conf.d/default.conf.backup || true
  # Write a deterministic dev nginx config that proxies known API routes to
  # the backend and proxies '/' to the CRA dev server so HMR works through nginx.
  cat > /etc/nginx/conf.d/default.conf <<'NGINXDEV'
server {
  listen 80 default_server;
  listen [::]:80 default_server;
  client_max_body_size 200M;

  location /upload {
    proxy_pass http://image-uploader-backend:5000;
    proxy_set_header Host $host;
    proxy_set_header X-Real-IP $remote_addr;
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_set_header X-Forwarded-Proto $scheme;
    client_max_body_size 200M;
  }

  location /api/upload {
    proxy_pass http://image-uploader-backend:5000/upload;
    proxy_set_header Host $host;
    proxy_set_header X-Real-IP $remote_addr;
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_set_header X-Forwarded-Proto $scheme;
    client_max_body_size 200M;
  }

  location /api/groups {
    proxy_pass http://image-uploader-backend:5000/groups;
    proxy_set_header Host $host;
    proxy_set_header X-Real-IP $remote_addr;
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_set_header X-Forwarded-Proto $scheme;
  }

  location /moderation/groups {
    proxy_pass http://image-uploader-backend:5000/moderation/groups;
    proxy_set_header Host $host;
    proxy_set_header X-Real-IP $remote_addr;
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_set_header X-Forwarded-Proto $scheme;
  }

  location ~ ^/groups/[a-zA-Z0-9_-]+(/.*)?$ {
    proxy_pass http://image-uploader-backend:5000;
    proxy_set_header Host $host;
    proxy_set_header X-Real-IP $remote_addr;
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_set_header X-Forwarded-Proto $scheme;
  }

  location /download {
    proxy_pass http://image-uploader-backend:5000;
    proxy_set_header Host $host;
    proxy_set_header X-Real-IP $remote_addr;
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_set_header X-Forwarded-Proto $scheme;
  }

  # Proxy webpack dev server (supports HMR / WebSocket upgrades)
  location /sockjs-node/ {
    proxy_pass http://127.0.0.1:3000;
    proxy_http_version 1.1;
    proxy_set_header Upgrade $http_upgrade;
    proxy_set_header Connection "Upgrade";
    proxy_set_header Host $host;
    proxy_set_header X-Real-IP $remote_addr;
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
  }

  location / {
    proxy_pass http://127.0.0.1:3000;
    proxy_http_version 1.1;
    proxy_set_header Upgrade $http_upgrade;
    proxy_set_header Connection "Upgrade";
    proxy_set_header Host $host;
    proxy_set_header X-Real-IP $remote_addr;
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
  }

}
NGINXDEV
elif [ -f /app/nginx.dev.conf ]; then
  echo "Using bundled nginx.dev.conf"
  cp /app/nginx.dev.conf /etc/nginx/conf.d/default.conf || true
fi

# Ensure node cache exists and is writable
mkdir -p /app/node_modules/.cache || true
chmod -R a+rw /app/node_modules || true

# Ensure HOST is set so CRA binds to 0.0.0.0
export HOST=${HOST:-0.0.0.0}

# Start the React development server in background
npm run dev &
DEV_PID=$!

# Start nginx in foreground so container stays alive; nginx will proxy to the dev server
exec nginx -g 'daemon off;'