-- =====================================================
-- SCHEMA: inventory
-- PROPÓSITO: Gestión de inventarios, productos, almacenes, movimientos
-- MÓDULOS: MGN-005 (Inventario Básico)
-- FECHA: 2025-11-24
-- =====================================================

-- Crear schema
CREATE SCHEMA IF NOT EXISTS inventory;

-- =====================================================
-- TYPES (ENUMs)
-- =====================================================

CREATE TYPE inventory.product_type AS ENUM (
  'storable',
  'consumable',
  'service'
);

CREATE TYPE inventory.tracking_type AS ENUM (
  'none',
  'lot',
  'serial'
);

CREATE TYPE inventory.location_type AS ENUM (
  'internal',
  'customer',
  'supplier',
  'inventory',
  'production',
  'transit'
);

CREATE TYPE inventory.picking_type AS ENUM (
  'incoming',
  'outgoing',
  'internal'
);

CREATE TYPE inventory.move_status AS ENUM (
  'draft',
  'waiting',              -- COR-002: Esperando disponibilidad (Odoo alignment)
  'confirmed',
  'partially_available',  -- COR-002: Parcialmente disponible (Odoo alignment)
  'assigned',
  'done',
  'cancelled'
);

CREATE TYPE inventory.valuation_method AS ENUM (
  'fifo',
  'average',
  'standard'
);

-- =====================================================
-- TABLES
-- =====================================================

-- Tabla: products (Productos)
CREATE TABLE inventory.products (
  id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
  tenant_id UUID NOT NULL REFERENCES auth.tenants(id) ON DELETE CASCADE,

  -- Identificación
  name VARCHAR(255) NOT NULL,
  code VARCHAR(100),
  barcode VARCHAR(100),
  description TEXT,

  -- Tipo
  product_type inventory.product_type NOT NULL DEFAULT 'storable',
  tracking inventory.tracking_type NOT NULL DEFAULT 'none',

  -- Categoría
  category_id UUID REFERENCES core.product_categories(id),

  -- Unidades de medida
  uom_id UUID NOT NULL REFERENCES core.uom(id), -- UoM de venta/uso
  purchase_uom_id UUID REFERENCES core.uom(id), -- UoM de compra

  -- Precios
  cost_price DECIMAL(15, 4) DEFAULT 0,
  list_price DECIMAL(15, 4) DEFAULT 0,

  -- Configuración de inventario
  valuation_method inventory.valuation_method DEFAULT 'fifo',
  is_storable BOOLEAN GENERATED ALWAYS AS (product_type = 'storable') STORED,

  -- Pesos y dimensiones
  weight DECIMAL(12, 4),
  volume DECIMAL(12, 4),

  -- Proveedores y clientes
  can_be_sold BOOLEAN DEFAULT TRUE,
  can_be_purchased BOOLEAN DEFAULT TRUE,

  -- Imagen
  image_url VARCHAR(500),

  -- Control
  active BOOLEAN NOT NULL DEFAULT TRUE,

  -- Auditoría
  created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
  created_by UUID REFERENCES auth.users(id),
  updated_at TIMESTAMP,
  updated_by UUID REFERENCES auth.users(id),
  deleted_at TIMESTAMP,
  deleted_by UUID REFERENCES auth.users(id),

  CONSTRAINT uq_products_code_tenant UNIQUE (tenant_id, code),
  CONSTRAINT uq_products_barcode UNIQUE (barcode)
);

-- Tabla: product_variants (Variantes de producto)
CREATE TABLE inventory.product_variants (
  id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
  product_template_id UUID NOT NULL REFERENCES inventory.products(id) ON DELETE CASCADE,

  -- Atributos (JSON)
  -- Ejemplo: {"color": "red", "size": "XL"}
  attribute_values JSONB NOT NULL DEFAULT '{}',

  -- Identificación
  name VARCHAR(255),
  code VARCHAR(100),
  barcode VARCHAR(100),

  -- Precio diferencial
  price_extra DECIMAL(15, 4) DEFAULT 0,

  -- Control
  active BOOLEAN NOT NULL DEFAULT TRUE,

  -- Auditoría
  created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
  created_by UUID REFERENCES auth.users(id),

  CONSTRAINT uq_product_variants_barcode UNIQUE (barcode)
);

-- Tabla: warehouses (Almacenes)
CREATE TABLE inventory.warehouses (
  id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
  tenant_id UUID NOT NULL REFERENCES auth.tenants(id) ON DELETE CASCADE,
  company_id UUID NOT NULL REFERENCES auth.companies(id) ON DELETE CASCADE,

  name VARCHAR(255) NOT NULL,
  code VARCHAR(20) NOT NULL,

  -- Dirección
  address_id UUID REFERENCES core.addresses(id),

  -- Configuración
  is_default BOOLEAN DEFAULT FALSE,

  -- Control
  active BOOLEAN NOT NULL DEFAULT TRUE,

  -- Auditoría
  created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
  created_by UUID REFERENCES auth.users(id),
  updated_at TIMESTAMP,
  updated_by UUID REFERENCES auth.users(id),

  CONSTRAINT uq_warehouses_code_company UNIQUE (company_id, code)
);

-- Tabla: locations (Ubicaciones de inventario)
CREATE TABLE inventory.locations (
  id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
  tenant_id UUID NOT NULL REFERENCES auth.tenants(id) ON DELETE CASCADE,

  warehouse_id UUID REFERENCES inventory.warehouses(id),
  name VARCHAR(255) NOT NULL,
  complete_name TEXT, -- Generado: "Warehouse / Zone A / Shelf 1"
  location_type inventory.location_type NOT NULL DEFAULT 'internal',

  -- Jerarquía
  parent_id UUID REFERENCES inventory.locations(id),

  -- Configuración
  is_scrap_location BOOLEAN DEFAULT FALSE,
  is_return_location BOOLEAN DEFAULT FALSE,

  -- Control
  active BOOLEAN NOT NULL DEFAULT TRUE,

  -- Auditoría
  created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
  created_by UUID REFERENCES auth.users(id),
  updated_at TIMESTAMP,
  updated_by UUID REFERENCES auth.users(id),

  CONSTRAINT chk_locations_no_self_parent CHECK (id != parent_id)
);

-- Tabla: lots (Lotes/Series) - DEBE IR ANTES DE stock_quants por FK
CREATE TABLE inventory.lots (
  id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
  tenant_id UUID NOT NULL REFERENCES auth.tenants(id) ON DELETE CASCADE,

  product_id UUID NOT NULL REFERENCES inventory.products(id),
  name VARCHAR(100) NOT NULL,
  ref VARCHAR(100), -- Referencia externa

  -- Fechas
  manufacture_date DATE,
  expiration_date DATE,
  removal_date DATE,
  alert_date DATE,

  -- Notas
  notes TEXT,

  -- Auditoría
  created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
  created_by UUID REFERENCES auth.users(id),

  CONSTRAINT uq_lots_name_product UNIQUE (product_id, name),
  CONSTRAINT chk_lots_expiration CHECK (expiration_date IS NULL OR expiration_date > manufacture_date)
);

-- Tabla: stock_quants (Cantidades en stock)
CREATE TABLE inventory.stock_quants (
  id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
  tenant_id UUID NOT NULL REFERENCES auth.tenants(id) ON DELETE CASCADE,

  product_id UUID NOT NULL REFERENCES inventory.products(id),
  location_id UUID NOT NULL REFERENCES inventory.locations(id),
  lot_id UUID REFERENCES inventory.lots(id),

  -- Cantidades
  quantity DECIMAL(12, 4) NOT NULL DEFAULT 0,
  reserved_quantity DECIMAL(12, 4) NOT NULL DEFAULT 0,
  available_quantity DECIMAL(12, 4) GENERATED ALWAYS AS (quantity - reserved_quantity) STORED,

  -- Valoración
  cost DECIMAL(15, 4) DEFAULT 0,

  -- Auditoría
  created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
  updated_at TIMESTAMP,

  CONSTRAINT chk_stock_quants_reserved CHECK (reserved_quantity >= 0 AND reserved_quantity <= quantity)
);

-- Unique index for stock_quants (allows expressions unlike UNIQUE constraint)
CREATE UNIQUE INDEX uq_stock_quants_product_location_lot
ON inventory.stock_quants (tenant_id, product_id, location_id, COALESCE(lot_id, '00000000-0000-0000-0000-000000000000'::UUID));

-- Índices para stock_quants
CREATE INDEX idx_stock_quants_tenant_id ON inventory.stock_quants(tenant_id);
CREATE INDEX idx_stock_quants_product_location ON inventory.stock_quants(product_id, location_id);

-- RLS para stock_quants
ALTER TABLE inventory.stock_quants ENABLE ROW LEVEL SECURITY;
CREATE POLICY tenant_isolation_stock_quants ON inventory.stock_quants
  USING (tenant_id = current_setting('app.current_tenant_id', true)::uuid);

-- Tabla: pickings (Albaranes/Transferencias)
CREATE TABLE inventory.pickings (
  id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
  tenant_id UUID NOT NULL REFERENCES auth.tenants(id) ON DELETE CASCADE,
  company_id UUID NOT NULL REFERENCES auth.companies(id) ON DELETE CASCADE,

  name VARCHAR(100) NOT NULL,
  picking_type inventory.picking_type NOT NULL,

  -- COR-007: Tipo de operación (referencia a picking_types)
  picking_type_id UUID, -- FK agregada después de crear picking_types

  -- Ubicaciones
  location_id UUID NOT NULL REFERENCES inventory.locations(id), -- Origen
  location_dest_id UUID NOT NULL REFERENCES inventory.locations(id), -- Destino

  -- Partner (cliente/proveedor)
  partner_id UUID REFERENCES core.partners(id),

  -- Fechas
  scheduled_date TIMESTAMP,
  date_done TIMESTAMP,

  -- Origen
  origin VARCHAR(255), -- Referencia al documento origen (PO, SO, etc.)

  -- COR-018: Backorder support
  backorder_id UUID, -- FK a picking padre si es backorder

  -- Estado
  status inventory.move_status NOT NULL DEFAULT 'draft',

  -- Notas
  notes TEXT,

  -- Auditoría
  created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
  created_by UUID REFERENCES auth.users(id),
  updated_at TIMESTAMP,
  updated_by UUID REFERENCES auth.users(id),
  validated_at TIMESTAMP,
  validated_by UUID REFERENCES auth.users(id),

  CONSTRAINT uq_pickings_name_company UNIQUE (company_id, name)
);

-- Tabla: stock_moves (Movimientos de inventario)
CREATE TABLE inventory.stock_moves (
  id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
  tenant_id UUID NOT NULL REFERENCES auth.tenants(id) ON DELETE CASCADE,

  product_id UUID NOT NULL REFERENCES inventory.products(id),
  product_uom_id UUID NOT NULL REFERENCES core.uom(id),

  -- Ubicaciones
  location_id UUID NOT NULL REFERENCES inventory.locations(id), -- Origen
  location_dest_id UUID NOT NULL REFERENCES inventory.locations(id), -- Destino

  -- Cantidades
  product_qty DECIMAL(12, 4) NOT NULL,
  quantity_done DECIMAL(12, 4) DEFAULT 0,

  -- Lote/Serie
  lot_id UUID REFERENCES inventory.lots(id),

  -- Relación con picking
  picking_id UUID REFERENCES inventory.pickings(id) ON DELETE CASCADE,

  -- Origen del movimiento
  origin VARCHAR(255),
  ref VARCHAR(255),

  -- Estado
  status inventory.move_status NOT NULL DEFAULT 'draft',

  -- Fechas
  date_expected TIMESTAMP,
  date TIMESTAMP,

  -- Precio (para valoración)
  price_unit DECIMAL(15, 4) DEFAULT 0,

  -- Analítica
  analytic_account_id UUID REFERENCES analytics.analytic_accounts(id), -- Distribución analítica

  -- Auditoría
  created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
  created_by UUID REFERENCES auth.users(id),
  updated_at TIMESTAMP,
  updated_by UUID REFERENCES auth.users(id),

  CONSTRAINT chk_stock_moves_quantity CHECK (product_qty > 0),
  CONSTRAINT chk_stock_moves_quantity_done CHECK (quantity_done >= 0)
);

-- =====================================================
-- COR-003: Tabla stock_move_lines (Líneas de movimiento)
-- Granularidad a nivel lote/serie (equivalente a stock.move.line Odoo)
-- =====================================================
CREATE TABLE inventory.stock_move_lines (
  id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
  tenant_id UUID NOT NULL REFERENCES auth.tenants(id) ON DELETE CASCADE,

  -- Relación con move
  move_id UUID NOT NULL REFERENCES inventory.stock_moves(id) ON DELETE CASCADE,

  -- Producto
  product_id UUID NOT NULL REFERENCES inventory.products(id),
  product_uom_id UUID NOT NULL REFERENCES core.uom(id),

  -- Lote/Serie/Paquete
  lot_id UUID REFERENCES inventory.lots(id),
  package_id UUID,          -- Futuro: packages table
  result_package_id UUID,   -- Futuro: packages table
  owner_id UUID REFERENCES core.partners(id),

  -- Ubicaciones
  location_id UUID NOT NULL REFERENCES inventory.locations(id),
  location_dest_id UUID NOT NULL REFERENCES inventory.locations(id),

  -- Cantidades
  quantity DECIMAL(12, 4) NOT NULL,
  quantity_done DECIMAL(12, 4) DEFAULT 0,

  -- Estado
  state VARCHAR(20),

  -- Fechas
  date TIMESTAMP,

  -- Referencia
  reference VARCHAR(255),

  -- Auditoría
  created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
  created_by UUID REFERENCES auth.users(id),
  updated_at TIMESTAMP,

  CONSTRAINT chk_move_lines_qty CHECK (quantity > 0),
  CONSTRAINT chk_move_lines_qty_done CHECK (quantity_done >= 0 AND quantity_done <= quantity)
);

COMMENT ON TABLE inventory.stock_move_lines IS
'COR-003: Líneas de movimiento de stock para granularidad a nivel lote/serie (equivalente a stock.move.line Odoo)';

-- =====================================================
-- COR-007: Tabla picking_types (Tipos de operación)
-- Configuración de operaciones de almacén (equivalente a stock.picking.type Odoo)
-- =====================================================
CREATE TABLE inventory.picking_types (
  id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
  tenant_id UUID NOT NULL REFERENCES auth.tenants(id) ON DELETE CASCADE,

  warehouse_id UUID REFERENCES inventory.warehouses(id),
  name VARCHAR(100) NOT NULL,
  code VARCHAR(20) NOT NULL,  -- incoming, outgoing, internal
  sequence INTEGER DEFAULT 10,

  -- Secuencia de numeración
  sequence_id UUID REFERENCES core.sequences(id),

  -- Ubicaciones por defecto
  default_location_src_id UUID REFERENCES inventory.locations(id),
  default_location_dest_id UUID REFERENCES inventory.locations(id),

  -- Tipo de retorno
  return_picking_type_id UUID REFERENCES inventory.picking_types(id),

  -- Configuración
  show_operations BOOLEAN DEFAULT FALSE,
  show_reserved BOOLEAN DEFAULT TRUE,
  use_create_lots BOOLEAN DEFAULT FALSE,
  use_existing_lots BOOLEAN DEFAULT TRUE,
  print_label BOOLEAN DEFAULT FALSE,

  -- Control
  active BOOLEAN NOT NULL DEFAULT TRUE,

  -- Auditoría
  created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
  created_by UUID REFERENCES auth.users(id),
  updated_at TIMESTAMP,
  updated_by UUID REFERENCES auth.users(id),

  CONSTRAINT uq_picking_types_code_warehouse UNIQUE (warehouse_id, code)
);

COMMENT ON TABLE inventory.picking_types IS
'COR-007: Tipos de operación de almacén (equivalente a stock.picking.type Odoo)';

-- =====================================================
-- COR-008: Tablas de Atributos de Producto
-- Sistema de variantes (equivalente a product.attribute Odoo)
-- =====================================================

-- Tabla: product_attributes (Atributos)
CREATE TABLE inventory.product_attributes (
  id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
  tenant_id UUID NOT NULL REFERENCES auth.tenants(id) ON DELETE CASCADE,

  name VARCHAR(100) NOT NULL,
  sequence INTEGER DEFAULT 10,

  -- Configuración de variantes
  create_variant VARCHAR(20) DEFAULT 'always',  -- always, dynamic, no_variant
  display_type VARCHAR(20) DEFAULT 'radio',     -- radio, select, color, multi

  -- Auditoría
  created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
  created_by UUID REFERENCES auth.users(id),

  CONSTRAINT uq_product_attributes_name_tenant UNIQUE (tenant_id, name),
  CONSTRAINT chk_product_attributes_create_variant CHECK (create_variant IN ('always', 'dynamic', 'no_variant')),
  CONSTRAINT chk_product_attributes_display_type CHECK (display_type IN ('radio', 'select', 'color', 'multi'))
);

-- Tabla: product_attribute_values (Valores de atributos)
CREATE TABLE inventory.product_attribute_values (
  id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
  tenant_id UUID NOT NULL REFERENCES auth.tenants(id) ON DELETE CASCADE,
  attribute_id UUID NOT NULL REFERENCES inventory.product_attributes(id) ON DELETE CASCADE,

  name VARCHAR(100) NOT NULL,
  sequence INTEGER DEFAULT 10,
  html_color VARCHAR(10),  -- Para display_type='color'
  is_custom BOOLEAN DEFAULT FALSE,

  -- Auditoría
  created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
  created_by UUID REFERENCES auth.users(id),

  CONSTRAINT uq_product_attribute_values_name UNIQUE (attribute_id, name)
);

-- Tabla: product_template_attribute_lines (Líneas de atributo por producto)
CREATE TABLE inventory.product_template_attribute_lines (
  id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
  tenant_id UUID NOT NULL REFERENCES auth.tenants(id) ON DELETE CASCADE,

  product_tmpl_id UUID NOT NULL REFERENCES inventory.products(id) ON DELETE CASCADE,
  attribute_id UUID NOT NULL REFERENCES inventory.product_attributes(id),
  value_ids UUID[] NOT NULL,  -- Array de product_attribute_value ids

  -- Auditoría
  created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
  created_by UUID REFERENCES auth.users(id),

  CONSTRAINT uq_ptal_product_attribute UNIQUE (product_tmpl_id, attribute_id)
);

-- Tabla: product_template_attribute_values (Valores por template)
CREATE TABLE inventory.product_template_attribute_values (
  id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
  tenant_id UUID NOT NULL REFERENCES auth.tenants(id) ON DELETE CASCADE,

  attribute_line_id UUID NOT NULL REFERENCES inventory.product_template_attribute_lines(id) ON DELETE CASCADE,
  product_attribute_value_id UUID NOT NULL REFERENCES inventory.product_attribute_values(id),

  -- Precio extra
  price_extra DECIMAL(15, 4) DEFAULT 0,

  -- Exclusión
  ptav_active BOOLEAN DEFAULT TRUE,

  -- Auditoría
  created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP
);

COMMENT ON TABLE inventory.product_attributes IS
'COR-008: Atributos de producto (color, talla, etc.) - equivalente a product.attribute Odoo';
COMMENT ON TABLE inventory.product_attribute_values IS
'COR-008: Valores posibles para cada atributo - equivalente a product.attribute.value Odoo';
COMMENT ON TABLE inventory.product_template_attribute_lines IS
'COR-008: Líneas de atributo por plantilla de producto - equivalente a product.template.attribute.line Odoo';
COMMENT ON TABLE inventory.product_template_attribute_values IS
'COR-008: Valores de atributo aplicados a plantilla - equivalente a product.template.attribute.value Odoo';

-- Tabla: inventory_adjustments (Ajustes de inventario)
CREATE TABLE inventory.inventory_adjustments (
  id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
  tenant_id UUID NOT NULL REFERENCES auth.tenants(id) ON DELETE CASCADE,
  company_id UUID NOT NULL REFERENCES auth.companies(id) ON DELETE CASCADE,

  name VARCHAR(100) NOT NULL,

  -- Ubicación a ajustar
  location_id UUID NOT NULL REFERENCES inventory.locations(id),

  -- Fecha de conteo
  date DATE NOT NULL,

  -- Estado
  status inventory.move_status NOT NULL DEFAULT 'draft',

  -- Notas
  notes TEXT,

  -- Auditoría
  created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
  created_by UUID REFERENCES auth.users(id),
  updated_at TIMESTAMP,
  updated_by UUID REFERENCES auth.users(id),
  validated_at TIMESTAMP,
  validated_by UUID REFERENCES auth.users(id),

  CONSTRAINT uq_inventory_adjustments_name_company UNIQUE (company_id, name)
);

-- Tabla: inventory_adjustment_lines (Líneas de ajuste)
CREATE TABLE inventory.inventory_adjustment_lines (
  id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
  tenant_id UUID NOT NULL REFERENCES auth.tenants(id) ON DELETE CASCADE,
  adjustment_id UUID NOT NULL REFERENCES inventory.inventory_adjustments(id) ON DELETE CASCADE,

  product_id UUID NOT NULL REFERENCES inventory.products(id),
  location_id UUID NOT NULL REFERENCES inventory.locations(id),
  lot_id UUID REFERENCES inventory.lots(id),

  -- Cantidades
  theoretical_qty DECIMAL(12, 4) NOT NULL DEFAULT 0, -- Cantidad teórica del sistema
  counted_qty DECIMAL(12, 4) NOT NULL, -- Cantidad contada físicamente
  difference_qty DECIMAL(12, 4) GENERATED ALWAYS AS (counted_qty - theoretical_qty) STORED,

  -- Auditoría
  created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP
);

-- Índices para inventory_adjustment_lines
CREATE INDEX idx_inventory_adjustment_lines_tenant_id ON inventory.inventory_adjustment_lines(tenant_id);

-- RLS para inventory_adjustment_lines
ALTER TABLE inventory.inventory_adjustment_lines ENABLE ROW LEVEL SECURITY;
CREATE POLICY tenant_isolation_inventory_adjustment_lines ON inventory.inventory_adjustment_lines
  USING (tenant_id = current_setting('app.current_tenant_id', true)::uuid);

-- =====================================================
-- INDICES
-- =====================================================

-- Products
CREATE INDEX idx_products_tenant_id ON inventory.products(tenant_id);
CREATE INDEX idx_products_code ON inventory.products(code);
CREATE INDEX idx_products_barcode ON inventory.products(barcode);
CREATE INDEX idx_products_category_id ON inventory.products(category_id);
CREATE INDEX idx_products_type ON inventory.products(product_type);
CREATE INDEX idx_products_active ON inventory.products(active) WHERE active = TRUE;

-- Product Variants
CREATE INDEX idx_product_variants_template_id ON inventory.product_variants(product_template_id);
CREATE INDEX idx_product_variants_barcode ON inventory.product_variants(barcode);

-- Warehouses
CREATE INDEX idx_warehouses_tenant_id ON inventory.warehouses(tenant_id);
CREATE INDEX idx_warehouses_company_id ON inventory.warehouses(company_id);
CREATE INDEX idx_warehouses_code ON inventory.warehouses(code);

-- Locations
CREATE INDEX idx_locations_tenant_id ON inventory.locations(tenant_id);
CREATE INDEX idx_locations_warehouse_id ON inventory.locations(warehouse_id);
CREATE INDEX idx_locations_parent_id ON inventory.locations(parent_id);
CREATE INDEX idx_locations_type ON inventory.locations(location_type);

-- Stock Quants
CREATE INDEX idx_stock_quants_product_id ON inventory.stock_quants(product_id);
CREATE INDEX idx_stock_quants_location_id ON inventory.stock_quants(location_id);
CREATE INDEX idx_stock_quants_lot_id ON inventory.stock_quants(lot_id);
CREATE INDEX idx_stock_quants_available ON inventory.stock_quants(product_id, location_id)
  WHERE available_quantity > 0;

-- Lots
CREATE INDEX idx_lots_tenant_id ON inventory.lots(tenant_id);
CREATE INDEX idx_lots_product_id ON inventory.lots(product_id);
CREATE INDEX idx_lots_name ON inventory.lots(name);
CREATE INDEX idx_lots_expiration_date ON inventory.lots(expiration_date);

-- Pickings
CREATE INDEX idx_pickings_tenant_id ON inventory.pickings(tenant_id);
CREATE INDEX idx_pickings_company_id ON inventory.pickings(company_id);
CREATE INDEX idx_pickings_name ON inventory.pickings(name);
CREATE INDEX idx_pickings_type ON inventory.pickings(picking_type);
CREATE INDEX idx_pickings_status ON inventory.pickings(status);
CREATE INDEX idx_pickings_partner_id ON inventory.pickings(partner_id);
CREATE INDEX idx_pickings_origin ON inventory.pickings(origin);
CREATE INDEX idx_pickings_scheduled_date ON inventory.pickings(scheduled_date);

-- Stock Moves
CREATE INDEX idx_stock_moves_tenant_id ON inventory.stock_moves(tenant_id);
CREATE INDEX idx_stock_moves_product_id ON inventory.stock_moves(product_id);
CREATE INDEX idx_stock_moves_picking_id ON inventory.stock_moves(picking_id);
CREATE INDEX idx_stock_moves_location_id ON inventory.stock_moves(location_id);
CREATE INDEX idx_stock_moves_location_dest_id ON inventory.stock_moves(location_dest_id);
CREATE INDEX idx_stock_moves_status ON inventory.stock_moves(status);
CREATE INDEX idx_stock_moves_lot_id ON inventory.stock_moves(lot_id);
CREATE INDEX idx_stock_moves_analytic_account_id ON inventory.stock_moves(analytic_account_id) WHERE analytic_account_id IS NOT NULL;

-- Inventory Adjustments
CREATE INDEX idx_inventory_adjustments_tenant_id ON inventory.inventory_adjustments(tenant_id);
CREATE INDEX idx_inventory_adjustments_company_id ON inventory.inventory_adjustments(company_id);
CREATE INDEX idx_inventory_adjustments_location_id ON inventory.inventory_adjustments(location_id);
CREATE INDEX idx_inventory_adjustments_status ON inventory.inventory_adjustments(status);
CREATE INDEX idx_inventory_adjustments_date ON inventory.inventory_adjustments(date);

-- Inventory Adjustment Lines
CREATE INDEX idx_inventory_adjustment_lines_adjustment_id ON inventory.inventory_adjustment_lines(adjustment_id);
CREATE INDEX idx_inventory_adjustment_lines_product_id ON inventory.inventory_adjustment_lines(product_id);

-- =====================================================
-- FUNCTIONS
-- =====================================================

-- Función: update_stock_quant
-- Actualiza la cantidad en stock de un producto en una ubicación
CREATE OR REPLACE FUNCTION inventory.update_stock_quant(
  p_product_id UUID,
  p_location_id UUID,
  p_lot_id UUID,
  p_quantity DECIMAL
)
RETURNS VOID AS $$
BEGIN
  INSERT INTO inventory.stock_quants (product_id, location_id, lot_id, quantity)
  VALUES (p_product_id, p_location_id, p_lot_id, p_quantity)
  ON CONFLICT (product_id, location_id, COALESCE(lot_id, '00000000-0000-0000-0000-000000000000'::UUID))
  DO UPDATE SET
    quantity = inventory.stock_quants.quantity + EXCLUDED.quantity,
    updated_at = CURRENT_TIMESTAMP;
END;
$$ LANGUAGE plpgsql;

COMMENT ON FUNCTION inventory.update_stock_quant IS 'Actualiza la cantidad en stock de un producto en una ubicación';

-- Función: reserve_quantity
-- Reserva cantidad de un producto en una ubicación
CREATE OR REPLACE FUNCTION inventory.reserve_quantity(
  p_product_id UUID,
  p_location_id UUID,
  p_lot_id UUID,
  p_quantity DECIMAL
)
RETURNS BOOLEAN AS $$
DECLARE
  v_available DECIMAL;
BEGIN
  -- Verificar disponibilidad
  SELECT available_quantity INTO v_available
  FROM inventory.stock_quants
  WHERE product_id = p_product_id
    AND location_id = p_location_id
    AND (lot_id = p_lot_id OR (lot_id IS NULL AND p_lot_id IS NULL));

  IF v_available IS NULL OR v_available < p_quantity THEN
    RETURN FALSE;
  END IF;

  -- Reservar
  UPDATE inventory.stock_quants
  SET reserved_quantity = reserved_quantity + p_quantity,
      updated_at = CURRENT_TIMESTAMP
  WHERE product_id = p_product_id
    AND location_id = p_location_id
    AND (lot_id = p_lot_id OR (lot_id IS NULL AND p_lot_id IS NULL));

  RETURN TRUE;
END;
$$ LANGUAGE plpgsql;

COMMENT ON FUNCTION inventory.reserve_quantity IS 'Reserva cantidad de un producto en una ubicación';

-- Función: get_product_stock
-- Obtiene el stock disponible de un producto
CREATE OR REPLACE FUNCTION inventory.get_product_stock(
  p_product_id UUID,
  p_location_id UUID DEFAULT NULL
)
RETURNS TABLE(
  location_id UUID,
  location_name VARCHAR,
  quantity DECIMAL,
  reserved_quantity DECIMAL,
  available_quantity DECIMAL
) AS $$
BEGIN
  RETURN QUERY
  SELECT
    sq.location_id,
    l.name AS location_name,
    sq.quantity,
    sq.reserved_quantity,
    sq.available_quantity
  FROM inventory.stock_quants sq
  JOIN inventory.locations l ON sq.location_id = l.id
  WHERE sq.product_id = p_product_id
    AND (p_location_id IS NULL OR sq.location_id = p_location_id)
    AND sq.quantity > 0;
END;
$$ LANGUAGE plpgsql STABLE;

COMMENT ON FUNCTION inventory.get_product_stock IS 'Obtiene el stock disponible de un producto por ubicación';

-- Función: process_stock_move
-- Procesa un movimiento de inventario (actualiza quants)
CREATE OR REPLACE FUNCTION inventory.process_stock_move(p_move_id UUID)
RETURNS VOID AS $$
DECLARE
  v_move RECORD;
BEGIN
  -- Obtener datos del movimiento
  SELECT * INTO v_move
  FROM inventory.stock_moves
  WHERE id = p_move_id;

  IF NOT FOUND THEN
    RAISE EXCEPTION 'Stock move % not found', p_move_id;
  END IF;

  IF v_move.status != 'confirmed' THEN
    RAISE EXCEPTION 'Stock move % is not in confirmed status', p_move_id;
  END IF;

  -- Decrementar en ubicación origen
  PERFORM inventory.update_stock_quant(
    v_move.product_id,
    v_move.location_id,
    v_move.lot_id,
    -v_move.quantity_done
  );

  -- Incrementar en ubicación destino
  PERFORM inventory.update_stock_quant(
    v_move.product_id,
    v_move.location_dest_id,
    v_move.lot_id,
    v_move.quantity_done
  );

  -- Actualizar estado del movimiento
  UPDATE inventory.stock_moves
  SET status = 'done',
      date = CURRENT_TIMESTAMP,
      updated_at = CURRENT_TIMESTAMP,
      updated_by = get_current_user_id()
  WHERE id = p_move_id;
END;
$$ LANGUAGE plpgsql;

COMMENT ON FUNCTION inventory.process_stock_move IS 'Procesa un movimiento de inventario y actualiza los quants';

-- Función: update_location_complete_name
-- Actualiza el nombre completo de una ubicación
CREATE OR REPLACE FUNCTION inventory.update_location_complete_name()
RETURNS TRIGGER AS $$
DECLARE
  v_parent_name TEXT;
BEGIN
  IF NEW.parent_id IS NULL THEN
    NEW.complete_name := NEW.name;
  ELSE
    SELECT complete_name INTO v_parent_name
    FROM inventory.locations
    WHERE id = NEW.parent_id;

    NEW.complete_name := v_parent_name || ' / ' || NEW.name;
  END IF;

  RETURN NEW;
END;
$$ LANGUAGE plpgsql;

COMMENT ON FUNCTION inventory.update_location_complete_name IS 'Actualiza el nombre completo de la ubicación';

-- =====================================================
-- TRIGGERS
-- =====================================================

-- Trigger: Actualizar updated_at
CREATE TRIGGER trg_products_updated_at
  BEFORE UPDATE ON inventory.products
  FOR EACH ROW
  EXECUTE FUNCTION auth.update_updated_at_column();

CREATE TRIGGER trg_warehouses_updated_at
  BEFORE UPDATE ON inventory.warehouses
  FOR EACH ROW
  EXECUTE FUNCTION auth.update_updated_at_column();

CREATE TRIGGER trg_locations_updated_at
  BEFORE UPDATE ON inventory.locations
  FOR EACH ROW
  EXECUTE FUNCTION auth.update_updated_at_column();

CREATE TRIGGER trg_pickings_updated_at
  BEFORE UPDATE ON inventory.pickings
  FOR EACH ROW
  EXECUTE FUNCTION auth.update_updated_at_column();

CREATE TRIGGER trg_stock_moves_updated_at
  BEFORE UPDATE ON inventory.stock_moves
  FOR EACH ROW
  EXECUTE FUNCTION auth.update_updated_at_column();

CREATE TRIGGER trg_inventory_adjustments_updated_at
  BEFORE UPDATE ON inventory.inventory_adjustments
  FOR EACH ROW
  EXECUTE FUNCTION auth.update_updated_at_column();

-- Trigger: Actualizar complete_name de ubicación
CREATE TRIGGER trg_locations_update_complete_name
  BEFORE INSERT OR UPDATE OF name, parent_id ON inventory.locations
  FOR EACH ROW
  EXECUTE FUNCTION inventory.update_location_complete_name();

-- =====================================================
-- TRACKING AUTOMÁTICO (mail.thread pattern)
-- =====================================================

-- Trigger: Tracking automático para movimientos de stock
CREATE TRIGGER track_stock_move_changes
  AFTER INSERT OR UPDATE OR DELETE ON inventory.stock_moves
  FOR EACH ROW EXECUTE FUNCTION system.track_field_changes();

COMMENT ON TRIGGER track_stock_move_changes ON inventory.stock_moves IS
'Registra automáticamente cambios en movimientos de stock (estado, producto, cantidad, ubicaciones)';

-- =====================================================
-- ROW LEVEL SECURITY (RLS)
-- =====================================================

ALTER TABLE inventory.products ENABLE ROW LEVEL SECURITY;
ALTER TABLE inventory.warehouses ENABLE ROW LEVEL SECURITY;
ALTER TABLE inventory.locations ENABLE ROW LEVEL SECURITY;
ALTER TABLE inventory.lots ENABLE ROW LEVEL SECURITY;
ALTER TABLE inventory.pickings ENABLE ROW LEVEL SECURITY;
ALTER TABLE inventory.stock_moves ENABLE ROW LEVEL SECURITY;
ALTER TABLE inventory.inventory_adjustments ENABLE ROW LEVEL SECURITY;

CREATE POLICY tenant_isolation_products ON inventory.products
  USING (tenant_id = get_current_tenant_id());

CREATE POLICY tenant_isolation_warehouses ON inventory.warehouses
  USING (tenant_id = get_current_tenant_id());

CREATE POLICY tenant_isolation_locations ON inventory.locations
  USING (tenant_id = get_current_tenant_id());

CREATE POLICY tenant_isolation_lots ON inventory.lots
  USING (tenant_id = get_current_tenant_id());

CREATE POLICY tenant_isolation_pickings ON inventory.pickings
  USING (tenant_id = get_current_tenant_id());

CREATE POLICY tenant_isolation_stock_moves ON inventory.stock_moves
  USING (tenant_id = get_current_tenant_id());

CREATE POLICY tenant_isolation_inventory_adjustments ON inventory.inventory_adjustments
  USING (tenant_id = get_current_tenant_id());

-- =====================================================
-- COMENTARIOS
-- =====================================================

COMMENT ON SCHEMA inventory IS 'Schema de gestión de inventarios, productos, almacenes y movimientos';
COMMENT ON TABLE inventory.products IS 'Productos (almacenables, consumibles, servicios)';
COMMENT ON TABLE inventory.product_variants IS 'Variantes de productos (color, talla, etc.)';
COMMENT ON TABLE inventory.warehouses IS 'Almacenes físicos';
COMMENT ON TABLE inventory.locations IS 'Ubicaciones dentro de almacenes (estantes, zonas, etc.)';
COMMENT ON TABLE inventory.stock_quants IS 'Cantidades en stock por producto/ubicación/lote';
COMMENT ON TABLE inventory.lots IS 'Lotes de producción y números de serie';
COMMENT ON TABLE inventory.pickings IS 'Albaranes de entrada, salida y transferencia';
COMMENT ON TABLE inventory.stock_moves IS 'Movimientos individuales de inventario';
COMMENT ON TABLE inventory.inventory_adjustments IS 'Ajustes de inventario (conteos físicos)';
COMMENT ON TABLE inventory.inventory_adjustment_lines IS 'Líneas de ajuste de inventario';

-- =====================================================
-- VISTAS ÚTILES
-- =====================================================

-- Vista: stock_by_product (Stock por producto)
CREATE OR REPLACE VIEW inventory.stock_by_product_view AS
SELECT
  p.id AS product_id,
  p.code AS product_code,
  p.name AS product_name,
  l.id AS location_id,
  l.complete_name AS location_name,
  COALESCE(SUM(sq.quantity), 0) AS quantity,
  COALESCE(SUM(sq.reserved_quantity), 0) AS reserved_quantity,
  COALESCE(SUM(sq.available_quantity), 0) AS available_quantity
FROM inventory.products p
CROSS JOIN inventory.locations l
LEFT JOIN inventory.stock_quants sq ON sq.product_id = p.id AND sq.location_id = l.id
WHERE p.product_type = 'storable'
  AND l.location_type = 'internal'
GROUP BY p.id, p.code, p.name, l.id, l.complete_name;

COMMENT ON VIEW inventory.stock_by_product_view IS 'Vista de stock disponible por producto y ubicación';

-- =====================================================
-- COR-025: Stock Routes and Rules
-- Equivalente a stock.route y stock.rule de Odoo
-- =====================================================

CREATE TYPE inventory.rule_action AS ENUM ('pull', 'push', 'pull_push', 'buy', 'manufacture');
CREATE TYPE inventory.procurement_type AS ENUM ('make_to_stock', 'make_to_order');

-- Tabla: routes (Rutas de abastecimiento)
CREATE TABLE inventory.routes (
  id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
  tenant_id UUID NOT NULL REFERENCES auth.tenants(id) ON DELETE CASCADE,
  name VARCHAR(255) NOT NULL,
  sequence INTEGER DEFAULT 10,
  is_active BOOLEAN DEFAULT TRUE,
  product_selectable BOOLEAN DEFAULT TRUE,
  product_categ_selectable BOOLEAN DEFAULT TRUE,
  warehouse_selectable BOOLEAN DEFAULT TRUE,
  supplied_wh_id UUID REFERENCES inventory.warehouses(id),
  supplier_wh_id UUID REFERENCES inventory.warehouses(id),
  company_id UUID REFERENCES core.companies(id),
  created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
  updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
);

-- Tabla: stock_rules (Reglas de push/pull)
CREATE TABLE inventory.stock_rules (
  id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
  tenant_id UUID NOT NULL REFERENCES auth.tenants(id) ON DELETE CASCADE,
  name VARCHAR(255) NOT NULL,
  route_id UUID NOT NULL REFERENCES inventory.routes(id) ON DELETE CASCADE,
  sequence INTEGER DEFAULT 20,
  action inventory.rule_action NOT NULL,
  procure_method inventory.procurement_type DEFAULT 'make_to_stock',
  location_src_id UUID REFERENCES inventory.locations(id),
  location_dest_id UUID NOT NULL REFERENCES inventory.locations(id),
  picking_type_id UUID REFERENCES inventory.picking_types(id),
  delay INTEGER DEFAULT 0,  -- Lead time in days
  partner_address_id UUID REFERENCES core.partners(id),
  propagate_cancel BOOLEAN DEFAULT FALSE,
  warehouse_id UUID REFERENCES inventory.warehouses(id),
  is_active BOOLEAN DEFAULT TRUE,
  created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
  updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
);

-- Tabla: product_routes (Relacion producto-rutas)
CREATE TABLE inventory.product_routes (
  id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
  product_id UUID NOT NULL REFERENCES inventory.products(id) ON DELETE CASCADE,
  route_id UUID NOT NULL REFERENCES inventory.routes(id) ON DELETE CASCADE,
  UNIQUE(product_id, route_id)
);

CREATE INDEX idx_routes_tenant ON inventory.routes(tenant_id);
CREATE INDEX idx_routes_warehouse ON inventory.routes(supplied_wh_id);
CREATE INDEX idx_rules_route ON inventory.stock_rules(route_id);
CREATE INDEX idx_rules_locations ON inventory.stock_rules(location_src_id, location_dest_id);
CREATE INDEX idx_product_routes_product ON inventory.product_routes(product_id);

-- RLS
ALTER TABLE inventory.routes ENABLE ROW LEVEL SECURITY;
ALTER TABLE inventory.stock_rules ENABLE ROW LEVEL SECURITY;
CREATE POLICY tenant_isolation_routes ON inventory.routes
  USING (tenant_id = get_current_tenant_id());
CREATE POLICY tenant_isolation_stock_rules ON inventory.stock_rules
  USING (tenant_id = get_current_tenant_id());

COMMENT ON TABLE inventory.routes IS 'COR-025: Stock routes - Equivalent to stock.route';
COMMENT ON TABLE inventory.stock_rules IS 'COR-025: Stock rules - Equivalent to stock.rule';
COMMENT ON TABLE inventory.product_routes IS 'COR-025: Product-route relationship';

-- =====================================================
-- COR-031: Stock Scrap
-- Equivalente a stock.scrap de Odoo
-- =====================================================

CREATE TYPE inventory.scrap_status AS ENUM ('draft', 'done');

CREATE TABLE inventory.stock_scrap (
  id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
  tenant_id UUID NOT NULL REFERENCES auth.tenants(id) ON DELETE CASCADE,
  name VARCHAR(100),
  product_id UUID NOT NULL REFERENCES inventory.products(id),
  product_uom_id UUID REFERENCES core.uom(id),
  lot_id UUID REFERENCES inventory.lots(id),
  scrap_qty DECIMAL(20,6) NOT NULL,
  scrap_location_id UUID NOT NULL REFERENCES inventory.locations(id),
  location_id UUID NOT NULL REFERENCES inventory.locations(id),
  move_id UUID REFERENCES inventory.stock_moves(id),
  picking_id UUID REFERENCES inventory.pickings(id),
  origin VARCHAR(255),
  date_done TIMESTAMP,
  status inventory.scrap_status DEFAULT 'draft',
  created_by UUID REFERENCES auth.users(id),
  created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
  updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
);

CREATE INDEX idx_stock_scrap_tenant ON inventory.stock_scrap(tenant_id);
CREATE INDEX idx_stock_scrap_product ON inventory.stock_scrap(product_id);
CREATE INDEX idx_stock_scrap_status ON inventory.stock_scrap(status);

-- RLS
ALTER TABLE inventory.stock_scrap ENABLE ROW LEVEL SECURITY;
CREATE POLICY tenant_isolation_stock_scrap ON inventory.stock_scrap
  USING (tenant_id = get_current_tenant_id());

COMMENT ON TABLE inventory.stock_scrap IS 'COR-031: Stock scrap - Equivalent to stock.scrap';

-- Funcion: validate_scrap
CREATE OR REPLACE FUNCTION inventory.validate_scrap(p_scrap_id UUID)
RETURNS UUID AS $$
DECLARE
  v_scrap RECORD;
  v_move_id UUID;
BEGIN
  SELECT * INTO v_scrap FROM inventory.stock_scrap WHERE id = p_scrap_id;

  IF NOT FOUND THEN
    RAISE EXCEPTION 'Scrap record % not found', p_scrap_id;
  END IF;

  IF v_scrap.status = 'done' THEN
    RETURN v_scrap.move_id;
  END IF;

  -- Create stock move
  INSERT INTO inventory.stock_moves (
    tenant_id, product_id, product_uom_id, quantity,
    location_id, location_dest_id, origin, status
  ) VALUES (
    v_scrap.tenant_id, v_scrap.product_id, v_scrap.product_uom_id,
    v_scrap.scrap_qty, v_scrap.location_id, v_scrap.scrap_location_id,
    v_scrap.name, 'done'
  ) RETURNING id INTO v_move_id;

  -- Update scrap record
  UPDATE inventory.stock_scrap
  SET status = 'done',
      move_id = v_move_id,
      date_done = NOW(),
      updated_at = NOW()
  WHERE id = p_scrap_id;

  RETURN v_move_id;
END;
$$ LANGUAGE plpgsql;

COMMENT ON FUNCTION inventory.validate_scrap IS 'COR-031: Validate scrap and create stock move';

-- =====================================================
-- COR-040: Stock Quant Packages (Paquetes/Bultos)
-- Equivalente a stock.quant.package de Odoo
-- =====================================================

CREATE TABLE inventory.packages (
  id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
  tenant_id UUID NOT NULL REFERENCES auth.tenants(id) ON DELETE CASCADE,
  name VARCHAR(100) NOT NULL,
  package_type_id UUID,
  shipping_weight DECIMAL(16,4),
  pack_date TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
  location_id UUID REFERENCES inventory.locations(id),
  company_id UUID REFERENCES core.companies(id),
  created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
  updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
);

CREATE TABLE inventory.package_types (
  id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
  tenant_id UUID NOT NULL REFERENCES auth.tenants(id) ON DELETE CASCADE,
  name VARCHAR(100) NOT NULL,
  sequence INTEGER DEFAULT 1,
  barcode VARCHAR(100),
  height DECIMAL(16,4),
  width DECIMAL(16,4),
  packaging_length DECIMAL(16,4),
  base_weight DECIMAL(16,4),
  max_weight DECIMAL(16,4),
  shipper_package_code VARCHAR(50),
  company_id UUID REFERENCES core.companies(id),
  created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP
);

-- Agregar FK a packages
ALTER TABLE inventory.packages ADD CONSTRAINT fk_packages_type
  FOREIGN KEY (package_type_id) REFERENCES inventory.package_types(id);

-- Agregar package_id a stock_quants
ALTER TABLE inventory.stock_quants ADD COLUMN IF NOT EXISTS package_id UUID REFERENCES inventory.packages(id);

CREATE INDEX idx_packages_tenant ON inventory.packages(tenant_id);
CREATE INDEX idx_packages_location ON inventory.packages(location_id);
CREATE INDEX idx_package_types_tenant ON inventory.package_types(tenant_id);
CREATE INDEX idx_stock_quants_package ON inventory.stock_quants(package_id);

ALTER TABLE inventory.packages ENABLE ROW LEVEL SECURITY;
ALTER TABLE inventory.package_types ENABLE ROW LEVEL SECURITY;
CREATE POLICY tenant_isolation_packages ON inventory.packages
  USING (tenant_id = get_current_tenant_id());
CREATE POLICY tenant_isolation_package_types ON inventory.package_types
  USING (tenant_id = get_current_tenant_id());

COMMENT ON TABLE inventory.packages IS 'COR-040: Stock packages - Equivalent to stock.quant.package';
COMMENT ON TABLE inventory.package_types IS 'COR-040: Package types - Equivalent to product.packaging';

-- =====================================================
-- COR-041: Putaway Rules (Reglas de ubicacion)
-- Equivalente a stock.putaway.rule de Odoo
-- =====================================================

CREATE TABLE inventory.putaway_rules (
  id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
  tenant_id UUID NOT NULL REFERENCES auth.tenants(id) ON DELETE CASCADE,
  product_id UUID REFERENCES inventory.products(id),
  category_id UUID REFERENCES inventory.product_categories(id),
  location_in_id UUID NOT NULL REFERENCES inventory.locations(id),
  location_out_id UUID NOT NULL REFERENCES inventory.locations(id),
  sequence INTEGER DEFAULT 10,
  storage_category_id UUID,
  company_id UUID REFERENCES core.companies(id),
  is_active BOOLEAN DEFAULT TRUE,
  created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
  updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
  CONSTRAINT chk_product_or_category CHECK (product_id IS NOT NULL OR category_id IS NOT NULL)
);

CREATE INDEX idx_putaway_rules_tenant ON inventory.putaway_rules(tenant_id);
CREATE INDEX idx_putaway_rules_product ON inventory.putaway_rules(product_id);
CREATE INDEX idx_putaway_rules_category ON inventory.putaway_rules(category_id);
CREATE INDEX idx_putaway_rules_location_in ON inventory.putaway_rules(location_in_id);

ALTER TABLE inventory.putaway_rules ENABLE ROW LEVEL SECURITY;
CREATE POLICY tenant_isolation_putaway_rules ON inventory.putaway_rules
  USING (tenant_id = get_current_tenant_id());

COMMENT ON TABLE inventory.putaway_rules IS 'COR-041: Putaway rules - Equivalent to stock.putaway.rule';

-- =====================================================
-- COR-042: Storage Categories
-- Equivalente a stock.storage.category de Odoo
-- =====================================================

CREATE TABLE inventory.storage_categories (
  id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
  tenant_id UUID NOT NULL REFERENCES auth.tenants(id) ON DELETE CASCADE,
  name VARCHAR(100) NOT NULL,
  max_weight DECIMAL(16,4),
  allow_new_product VARCHAR(20) DEFAULT 'mixed',  -- mixed, same, empty
  company_id UUID REFERENCES core.companies(id),
  created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP
);

-- Agregar FK a putaway_rules
ALTER TABLE inventory.putaway_rules ADD CONSTRAINT fk_putaway_storage
  FOREIGN KEY (storage_category_id) REFERENCES inventory.storage_categories(id);

-- Agregar storage_category_id a locations
ALTER TABLE inventory.locations ADD COLUMN IF NOT EXISTS storage_category_id UUID REFERENCES inventory.storage_categories(id);

CREATE INDEX idx_storage_categories_tenant ON inventory.storage_categories(tenant_id);

ALTER TABLE inventory.storage_categories ENABLE ROW LEVEL SECURITY;
CREATE POLICY tenant_isolation_storage_categories ON inventory.storage_categories
  USING (tenant_id = get_current_tenant_id());

COMMENT ON TABLE inventory.storage_categories IS 'COR-042: Storage categories - Equivalent to stock.storage.category';

-- =====================================================
-- COR-043: Campos adicionales en tablas existentes
-- =====================================================

-- Tracking en products (lot/serial)
ALTER TABLE inventory.products ADD COLUMN IF NOT EXISTS tracking VARCHAR(20) DEFAULT 'none';  -- none, lot, serial
ALTER TABLE inventory.products ADD COLUMN IF NOT EXISTS sale_ok BOOLEAN DEFAULT TRUE;
ALTER TABLE inventory.products ADD COLUMN IF NOT EXISTS purchase_ok BOOLEAN DEFAULT TRUE;
ALTER TABLE inventory.products ADD COLUMN IF NOT EXISTS invoice_policy VARCHAR(20) DEFAULT 'order';  -- order, delivery
ALTER TABLE inventory.products ADD COLUMN IF NOT EXISTS expense_policy VARCHAR(20);  -- no, cost, sales_price
ALTER TABLE inventory.products ADD COLUMN IF NOT EXISTS service_type VARCHAR(20);  -- manual, timesheet
ALTER TABLE inventory.products ADD COLUMN IF NOT EXISTS sale_delay INTEGER DEFAULT 0;
ALTER TABLE inventory.products ADD COLUMN IF NOT EXISTS purchase_method VARCHAR(20) DEFAULT 'receive';  -- purchase, receive
ALTER TABLE inventory.products ADD COLUMN IF NOT EXISTS produce_delay INTEGER DEFAULT 1;

-- Campos en stock_quants
ALTER TABLE inventory.stock_quants ADD COLUMN IF NOT EXISTS reserved_quantity DECIMAL(20,6) DEFAULT 0;
ALTER TABLE inventory.stock_quants ADD COLUMN IF NOT EXISTS inventory_quantity DECIMAL(20,6);
ALTER TABLE inventory.stock_quants ADD COLUMN IF NOT EXISTS inventory_diff_quantity DECIMAL(20,6);
ALTER TABLE inventory.stock_quants ADD COLUMN IF NOT EXISTS inventory_date DATE;
ALTER TABLE inventory.stock_quants ADD COLUMN IF NOT EXISTS user_id UUID REFERENCES auth.users(id);

-- Campos en pickings
ALTER TABLE inventory.pickings ADD COLUMN IF NOT EXISTS show_check_availability BOOLEAN DEFAULT TRUE;
ALTER TABLE inventory.pickings ADD COLUMN IF NOT EXISTS show_validate BOOLEAN DEFAULT TRUE;
ALTER TABLE inventory.pickings ADD COLUMN IF NOT EXISTS show_allocation BOOLEAN DEFAULT FALSE;
ALTER TABLE inventory.pickings ADD COLUMN IF NOT EXISTS immediate_transfer BOOLEAN DEFAULT FALSE;
ALTER TABLE inventory.pickings ADD COLUMN IF NOT EXISTS printed BOOLEAN DEFAULT FALSE;
ALTER TABLE inventory.pickings ADD COLUMN IF NOT EXISTS is_locked BOOLEAN DEFAULT TRUE;
ALTER TABLE inventory.pickings ADD COLUMN IF NOT EXISTS package_ids UUID[];
ALTER TABLE inventory.pickings ADD COLUMN IF NOT EXISTS carrier_id UUID;
ALTER TABLE inventory.pickings ADD COLUMN IF NOT EXISTS carrier_tracking_ref VARCHAR(255);
ALTER TABLE inventory.pickings ADD COLUMN IF NOT EXISTS weight DECIMAL(16,4);
ALTER TABLE inventory.pickings ADD COLUMN IF NOT EXISTS shipping_weight DECIMAL(16,4);

-- Campos en stock_moves
ALTER TABLE inventory.stock_moves ADD COLUMN IF NOT EXISTS procure_method VARCHAR(20) DEFAULT 'make_to_stock';
ALTER TABLE inventory.stock_moves ADD COLUMN IF NOT EXISTS rule_id UUID REFERENCES inventory.stock_rules(id);
ALTER TABLE inventory.stock_moves ADD COLUMN IF NOT EXISTS propagate_cancel BOOLEAN DEFAULT FALSE;
ALTER TABLE inventory.stock_moves ADD COLUMN IF NOT EXISTS delay_alert_date DATE;
ALTER TABLE inventory.stock_moves ADD COLUMN IF NOT EXISTS scrapped BOOLEAN DEFAULT FALSE;
ALTER TABLE inventory.stock_moves ADD COLUMN IF NOT EXISTS is_inventory BOOLEAN DEFAULT FALSE;
ALTER TABLE inventory.stock_moves ADD COLUMN IF NOT EXISTS priority VARCHAR(10) DEFAULT '0';  -- 0=normal, 1=urgent

-- Campos en warehouses
ALTER TABLE inventory.warehouses ADD COLUMN IF NOT EXISTS buy_to_resupply BOOLEAN DEFAULT TRUE;
ALTER TABLE inventory.warehouses ADD COLUMN IF NOT EXISTS manufacture_to_resupply BOOLEAN DEFAULT FALSE;
ALTER TABLE inventory.warehouses ADD COLUMN IF NOT EXISTS reception_steps VARCHAR(20) DEFAULT 'one_step';  -- one_step, two_steps, three_steps
ALTER TABLE inventory.warehouses ADD COLUMN IF NOT EXISTS delivery_steps VARCHAR(20) DEFAULT 'ship_only';  -- ship_only, pick_ship, pick_pack_ship
ALTER TABLE inventory.warehouses ADD COLUMN IF NOT EXISTS wh_input_stock_loc_id UUID REFERENCES inventory.locations(id);
ALTER TABLE inventory.warehouses ADD COLUMN IF NOT EXISTS wh_qc_stock_loc_id UUID REFERENCES inventory.locations(id);
ALTER TABLE inventory.warehouses ADD COLUMN IF NOT EXISTS wh_output_stock_loc_id UUID REFERENCES inventory.locations(id);
ALTER TABLE inventory.warehouses ADD COLUMN IF NOT EXISTS wh_pack_stock_loc_id UUID REFERENCES inventory.locations(id);
ALTER TABLE inventory.warehouses ADD COLUMN IF NOT EXISTS pick_type_id UUID REFERENCES inventory.picking_types(id);
ALTER TABLE inventory.warehouses ADD COLUMN IF NOT EXISTS pack_type_id UUID REFERENCES inventory.picking_types(id);

-- Campos en locations
ALTER TABLE inventory.locations ADD COLUMN IF NOT EXISTS removal_strategy_id UUID;
ALTER TABLE inventory.locations ADD COLUMN IF NOT EXISTS putaway_rule_ids UUID[];
ALTER TABLE inventory.locations ADD COLUMN IF NOT EXISTS cyclic_inventory_frequency INTEGER DEFAULT 0;
ALTER TABLE inventory.locations ADD COLUMN IF NOT EXISTS last_inventory_date DATE;
ALTER TABLE inventory.locations ADD COLUMN IF NOT EXISTS next_inventory_date DATE;

-- Campos en lots
ALTER TABLE inventory.lots ADD COLUMN IF NOT EXISTS use_date DATE;
ALTER TABLE inventory.lots ADD COLUMN IF NOT EXISTS removal_date DATE;
ALTER TABLE inventory.lots ADD COLUMN IF NOT EXISTS alert_date DATE;
ALTER TABLE inventory.lots ADD COLUMN IF NOT EXISTS product_qty DECIMAL(20,6);

COMMENT ON COLUMN inventory.products.tracking IS 'COR-043: Product tracking mode (none/lot/serial)';
COMMENT ON COLUMN inventory.stock_quants.reserved_quantity IS 'COR-043: Reserved quantity for orders';

-- =====================================================
-- COR-044: Removal Strategies
-- Equivalente a product.removal de Odoo
-- =====================================================

CREATE TABLE inventory.removal_strategies (
  id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
  name VARCHAR(100) NOT NULL,
  method VARCHAR(20) NOT NULL,  -- fifo, lifo, closest, least_packages
  created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP
);

-- Seed data
INSERT INTO inventory.removal_strategies (name, method) VALUES
  ('First In First Out (FIFO)', 'fifo'),
  ('Last In First Out (LIFO)', 'lifo'),
  ('Closest Location', 'closest'),
  ('Least Packages', 'least_packages');

-- FK en locations
ALTER TABLE inventory.locations ADD CONSTRAINT fk_locations_removal
  FOREIGN KEY (removal_strategy_id) REFERENCES inventory.removal_strategies(id);

COMMENT ON TABLE inventory.removal_strategies IS 'COR-044: Removal strategies - Equivalent to product.removal';

-- =====================================================
-- FIN DEL SCHEMA INVENTORY
-- =====================================================