-- =============================================
-- Módulo Chat — Crear tablas en PostgreSQL
-- Ejecutar en el servidor con:
--   psql -U <usuario> -d <basedatos> -f chat_tables.sql
-- =============================================

CREATE TABLE IF NOT EXISTS chat_config (
    id              BIGSERIAL PRIMARY KEY,
    config_key      VARCHAR(255) NOT NULL UNIQUE,
    config_value    TEXT,
    description     VARCHAR(255),
    created_at      TIMESTAMP NULL,
    updated_at      TIMESTAMP NULL
);

CREATE TABLE IF NOT EXISTS chat_contacts (
    id          BIGSERIAL PRIMARY KEY,
    canal       VARCHAR(20)  NOT NULL,
    canal_id    VARCHAR(255) NOT NULL,
    nombre      VARCHAR(255),
    telefono    VARCHAR(255),
    metadata    JSONB,
    created_at  TIMESTAMP NULL,
    updated_at  TIMESTAMP NULL,
    UNIQUE (canal, canal_id)
);

CREATE TABLE IF NOT EXISTS chat_conversations (
    id                  BIGSERIAL PRIMARY KEY,
    contact_id          BIGINT NOT NULL REFERENCES chat_contacts(id) ON DELETE CASCADE,
    canal               VARCHAR(20)  NOT NULL,
    estado              VARCHAR(20)  NOT NULL DEFAULT 'bot',
    menu_actual_id      INTEGER,
    ultimo_mensaje_at   TIMESTAMP NULL,
    mensajes_no_leidos  INTEGER NOT NULL DEFAULT 0,
    created_at          TIMESTAMP NULL,
    updated_at          TIMESTAMP NULL
);

CREATE TABLE IF NOT EXISTS chat_messages (
    id               BIGSERIAL PRIMARY KEY,
    conversation_id  BIGINT NOT NULL REFERENCES chat_conversations(id) ON DELETE CASCADE,
    tipo             VARCHAR(20) NOT NULL,
    contenido        TEXT        NOT NULL,
    leido            BOOLEAN     NOT NULL DEFAULT FALSE,
    created_at       TIMESTAMP NULL,
    updated_at       TIMESTAMP NULL
);

CREATE TABLE IF NOT EXISTS chat_menus (
    id          BIGSERIAL PRIMARY KEY,
    nombre      VARCHAR(255) NOT NULL,
    mensaje     TEXT         NOT NULL,
    es_raiz     BOOLEAN NOT NULL DEFAULT FALSE,
    activo      BOOLEAN NOT NULL DEFAULT TRUE,
    created_at  TIMESTAMP NULL,
    updated_at  TIMESTAMP NULL
);

CREATE TABLE IF NOT EXISTS chat_menu_options (
    id               BIGSERIAL PRIMARY KEY,
    menu_id          BIGINT NOT NULL REFERENCES chat_menus(id) ON DELETE CASCADE,
    clave            VARCHAR(20)  NOT NULL,
    etiqueta         VARCHAR(255) NOT NULL,
    accion           VARCHAR(30)  NOT NULL,
    menu_destino_id  BIGINT,
    respuesta_texto  TEXT,
    orden            INTEGER NOT NULL DEFAULT 0,
    created_at       TIMESTAMP NULL,
    updated_at       TIMESTAMP NULL
);

-- Registrar la migración en la tabla de Laravel para que no se corra de nuevo
INSERT INTO migrations (migration, batch)
SELECT '2026_04_30_000001_create_chat_tables', COALESCE((SELECT MAX(batch) FROM migrations), 0) + 1
WHERE NOT EXISTS (
    SELECT 1 FROM migrations WHERE migration = '2026_04_30_000001_create_chat_tables'
);