-- Migration: 025_Orders
-- Description: Create order_read_models table for order management

CREATE TABLE IF NOT EXISTS order_read_models (
    -- EventFlow standard columns
    aggregate_id TEXT PRIMARY KEY,
    create_time TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW(),
    update_time TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW(),
    last_aggregate_sequence_number INTEGER NOT NULL DEFAULT 0,

    -- Company and fiscal year
    company_id TEXT NOT NULL,
    fiscal_year_id TEXT NOT NULL,

    -- Customer reference
    customer_id TEXT NOT NULL,
    customer_name TEXT NOT NULL,
    customer_number TEXT NOT NULL,

    -- Order identification
    order_number TEXT NOT NULL,
    order_date DATE,
    expected_delivery_date DATE,

    -- Status: draft, confirmed, partially_invoiced, fully_invoiced, cancelled
    status TEXT NOT NULL DEFAULT 'draft',

    -- Amounts (set when confirmed)
    amount_ex_vat DECIMAL(18, 2) NOT NULL DEFAULT 0,
    amount_vat DECIMAL(18, 2) NOT NULL DEFAULT 0,
    amount_total DECIMAL(18, 2) NOT NULL DEFAULT 0,

    -- Currency
    currency TEXT NOT NULL DEFAULT 'DKK',

    -- Lines (stored as JSON, includes invoicing status per line)
    lines TEXT NOT NULL DEFAULT '[]',

    -- Invoice reference (latest invoice created from this order)
    invoice_id TEXT,
    invoice_number TEXT,

    -- Notes and reference
    notes TEXT,
    reference TEXT,

    -- Status timestamps
    confirmed_at TIMESTAMP WITH TIME ZONE,
    confirmed_by TEXT,
    invoiced_at TIMESTAMP WITH TIME ZONE,
    invoiced_by TEXT,
    cancelled_at TIMESTAMP WITH TIME ZONE,
    cancelled_by TEXT,
    cancelled_reason TEXT,

    -- Audit
    created_by TEXT NOT NULL,
    updated_by TEXT
);

-- Indexes for common queries
CREATE INDEX IF NOT EXISTS idx_order_read_models_company_id
    ON order_read_models(company_id);

CREATE INDEX IF NOT EXISTS idx_order_read_models_customer_id
    ON order_read_models(customer_id);

CREATE INDEX IF NOT EXISTS idx_order_read_models_fiscal_year_id
    ON order_read_models(fiscal_year_id);

CREATE INDEX IF NOT EXISTS idx_order_read_models_status
    ON order_read_models(status);

CREATE INDEX IF NOT EXISTS idx_order_read_models_order_date
    ON order_read_models(order_date DESC);

CREATE INDEX IF NOT EXISTS idx_order_read_models_invoice_id
    ON order_read_models(invoice_id)
    WHERE invoice_id IS NOT NULL;

-- Unique constraint for order number per company
CREATE UNIQUE INDEX IF NOT EXISTS idx_order_read_models_company_order_number
    ON order_read_models(company_id, order_number);

-- Composite index for listing orders by company and status
CREATE INDEX IF NOT EXISTS idx_order_read_models_company_status_date
    ON order_read_models(company_id, status, order_date DESC);

COMMENT ON TABLE order_read_models IS 'Read model for orders (Ordrer)';
COMMENT ON COLUMN order_read_models.order_number IS 'Order number format: ORD-YYYY-NNNN (Ordrenummer)';
COMMENT ON COLUMN order_read_models.status IS 'Order status: draft, confirmed, partially_invoiced, fully_invoiced, cancelled';
COMMENT ON COLUMN order_read_models.lines IS 'JSON array of order lines with invoicing status';