#!/bin/bash
# --- SCRIPT DE INSTALACIÓN FINAL (Arquitectura Web + Worker) ---

set -e

# ========= CONFIGURACIÓN =========
APP_NAME="rss"
DB_NAME="rss"
DB_USER="rss"
APP_USER="x"
APP_DIR="/home/$APP_USER/$APP_NAME"
PYTHON_ENV="$APP_DIR/venv"
WSGI_APP_ENTRY="app:app"

# ========= 0. COMPROBACIONES INICIALES Y CREACIÓN DE USUARIO =========
echo "🟢 Paso 0: Verificando usuario y pidiendo contraseña de la BD..."
if ! id "$APP_USER" &>/dev/null; then
    echo "👤 Creando usuario del sistema '$APP_USER'..."
    sudo useradd -m -s /bin/bash "$APP_USER"
else
    echo "✅ Usuario del sistema '$APP_USER' ya existe."
fi

if [ -z "$DB_PASS" ]; then
    read -sp "🔑 Introduce la contraseña para el usuario de la base de datos '$DB_USER': " DB_PASS
    echo
    if [ -z "<span class="math-inline">DB\_PASS" \]; then
echo "❌ La contraseña no puede estar vacía\. Abortando\."
exit 1
fi
fi
\# \=\=\=\=\=\=\=\=\= 1\. INSTALAR DEPENDENCIAS DEL SISTEMA \=\=\=\=\=\=\=\=\=
echo "🟢 Paso 1\: Instalando dependencias del sistema\.\.\."
sudo apt\-get update
sudo apt\-get install \-y wget ca\-certificates postgresql postgresql\-contrib python3\-venv python3\-pip python3\-dev libpq\-dev
\# \=\=\=\=\=\=\=\=\= 2\. CONFIGURAR POSTGRESQL \=\=\=\=\=\=\=\=\=
echo "🛠️ Paso 2\: Configurando PostgreSQL\.\.\."
sudo \-u postgres psql \-c <7\>"DO \\$\\</span> BEGIN IF NOT EXISTS (SELECT FROM pg_catalog.pg_user WHERE usename = '$DB_USER') THEN CREATE USER $DB_USER WITH PASSWORD '$DB_PASS'; ELSE ALTER USER $DB_USER WITH PASSWORD '<span class="math-inline">DB\_PASS'; END IF; END \\$\\</span>;"
if ! sudo -u postgres psql -lqt | cut -d \| -f 1 | grep -qw "$DB_NAME"; then
    sudo -u postgres psql -c "CREATE DATABASE $DB_NAME OWNER $DB_USER;"
    echo "Base de datos '$DB_NAME' creada."
else
    echo "✅ Base de datos '$DB_NAME' ya existe."
fi

# ========= 3. PREPARAR DIRECTORIO Y ENTORNO DE LA APP =========
echo "🐍 Paso 3: Configurando el directorio de la aplicación y el entorno virtual..."
sudo mkdir -p "$APP_DIR"
sudo chown -R "$APP_USER":"$APP_USER" "$APP_DIR"

sudo -u "$APP_USER" bash <<EOF
set -e
cd "$APP_DIR"
echo "🐍 Creando entorno virtual en $PYTHON_ENV"
python3 -m venv "$PYTHON_ENV"
echo "📦 Instalando dependencias desde requirements.txt..."
"$PYTHON_ENV/bin/python" -m pip install --upgrade pip
if [ -f "requirements.txt" ]; then
    "$PYTHON_ENV/bin/python" -m pip install -r "requirements.txt"
else
    echo "⚠️  ADVERTENCIA: No se encontró requirements.txt."
fi
EOF

# ========= 4. CREAR TABLAS Y CONFIGURAR BÚSQUEDA DE TEXTO COMPLETO =========
echo "📐 Paso 4: Creando/verificando tablas y configurando Full-Text Search..."
export PGPASSWORD="$DB_PASS"
# --- Creación de tablas base completas ---
psql -U "$DB_USER" -h localhost -d "$DB_NAME" -c "CREATE TABLE IF NOT EXISTS continentes (id SERIAL PRIMARY KEY, nombre VARCHAR(50) NOT NULL UNIQUE);"
psql -U "$DB_USER" -h localhost -d "$DB_NAME" -c "CREATE TABLE IF NOT EXISTS categorias (id SERIAL PRIMARY KEY, nombre VARCHAR(100) NOT NULL UNIQUE);"
psql -U "$DB_USER" -h localhost -d "$DB_NAME" -c "CREATE TABLE IF NOT EXISTS paises (id SERIAL PRIMARY KEY, nombre VARCHAR(100) NOT NULL UNIQUE, continente_id INTEGER REFERENCES continentes(id) ON DELETE SET NULL);"
psql -U "$DB_USER" -h localhost -d "$DB_NAME" -c "CREATE TABLE IF NOT EXISTS feeds (id SERIAL PRIMARY KEY, nombre VARCHAR(255), descripcion TEXT, url TEXT NOT NULL UNIQUE, categoria_id INTEGER REFERENCES categorias(id) ON DELETE SET NULL, pais_id INTEGER REFERENCES paises(id) ON DELETE SET NULL, idioma CHAR(2), activo BOOLEAN DEFAULT TRUE, fallos INTEGER DEFAULT 0, last_etag TEXT, last_modified TEXT);"
psql -U "$DB_USER" -h localhost -d "$DB_NAME" -c "CREATE TABLE IF NOT EXISTS noticias (id VARCHAR(32) PRIMARY KEY, titulo TEXT, resumen TEXT, url TEXT NOT NULL UNIQUE, fecha TIMESTAMP, imagen_url TEXT, categoria_id INTEGER REFERENCES categorias(id) ON DELETE SET NULL, pais_id INTEGER REFERENCES paises(id) ON DELETE SET NULL, tsv tsvector);"
# --- Configuración de FTS ---
psql -U "$DB_USER" -h localhost -d "$DB_NAME" -c "ALTER TABLE noticias ADD COLUMN IF NOT EXISTS tsv tsvector;"
psql -U "$DB_USER" -h localhost -d "<span class="math-inline">DB\_NAME" \-c "CREATE OR REPLACE FUNCTION noticias\_tsv\_trigger\(\) RETURNS trigger AS \\$\\$ begin new\.tsv \:\= setweight\(to\_tsvector\('spanish', coalesce\(new\.titulo,''\)\), 'A'\) \|\| setweight\(to\_tsvector\('spanish', coalesce\(new\.resumen,''\)\), 'B'\); return new; end \\$\\</span> LANGUAGE plpgsql;"
psql -U "$DB_USER" -h localhost -d "$DB_NAME" -c "DROP TRIGGER IF EXISTS tsvectorupdate ON noticias;"
psql -U "$DB_USER" -h localhost -d "$DB_NAME" -c "CREATE TRIGGER tsvectorupdate BEFORE INSERT ON noticias FOR EACH ROW EXECUTE PROCEDURE noticias_tsv_trigger();"
psql -U "$DB_USER" -h localhost -d "$DB_NAME" -c "CREATE INDEX IF NOT EXISTS noticias_tsv_idx ON noticias USING gin(tsv);"
echo "🔄 Actualizando índice de búsqueda para noticias existentes (puede tardar)..."
psql -U "$DB_USER" -h localhost -d "$DB_NAME" -c "UPDATE noticias SET tsv = setweight(to_tsvector('spanish', coalesce(titulo,'')), 'A') || setweight(to_tsvector('spanish', coalesce(resumen,'')), 'B') WHERE tsv IS NULL;"
# --- Cargar datos iniciales ---
for sql_file in continentes.sql paises.sql