-- Polaris — canonical PostgreSQL schema (single source of truth)
-- Database: reseller   User: reseller

CREATE EXTENSION IF NOT EXISTS "pgcrypto";

-- ── SUPPLIERS ──────────────────────────────────────────────
CREATE TABLE suppliers (
    id                UUID PRIMARY KEY DEFAULT gen_random_uuid(),
    name              TEXT NOT NULL,
    adapter_type      TEXT NOT NULL,             -- csv|xml|json|api|affiliate
    api_endpoint      TEXT,
    account_id        TEXT,
    credentials_enc   TEXT,                       -- encrypted secret ref (never raw)
    fulfillment_caps  JSONB DEFAULT '[]',
    shipping_regions  JSONB DEFAULT '[]',
    reliability_score NUMERIC(5,2) DEFAULT 50.0,
    status            TEXT NOT NULL DEFAULT 'active',  -- active|paused|failed
    created_at        TIMESTAMPTZ DEFAULT now(),
    updated_at        TIMESTAMPTZ DEFAULT now()
);

-- ── PRODUCTS ───────────────────────────────────────────────
CREATE TABLE products (
    id           UUID PRIMARY KEY DEFAULT gen_random_uuid(),
    sku          TEXT UNIQUE NOT NULL,
    title        TEXT NOT NULL,
    description  TEXT,
    category     TEXT,
    brand        TEXT,
    manufacturer TEXT,
    upc_ean_gtin TEXT,
    images       JSONB DEFAULT '[]',
    dimensions   JSONB,                          -- {length,width,height,unit}
    weight_grams NUMERIC(10,2),
    cost         NUMERIC(12,2) NOT NULL DEFAULT 0,
    retail_price NUMERIC(12,2),
    min_price    NUMERIC(12,2),
    max_price    NUMERIC(12,2),
    status       TEXT NOT NULL DEFAULT 'discovered',  -- discovered|analyzing|approved|imported|content_generated|price_calculated|quality_check|published|monitored|paused|sold
    lifecycle    JSONB DEFAULT '{}',             -- opportunity score etc
    created_at   TIMESTAMPTZ DEFAULT now(),
    updated_at   TIMESTAMPTZ DEFAULT now()
);

-- ── SUPPLIER_PRODUCTS ──────────────────────────────────────
CREATE TABLE supplier_products (
    id                UUID PRIMARY KEY DEFAULT gen_random_uuid(),
    supplier_id       UUID NOT NULL REFERENCES suppliers(id) ON DELETE CASCADE,
    supplier_sku      TEXT NOT NULL,
    product_id        UUID REFERENCES products(id) ON DELETE SET NULL,
    supplier_cost     NUMERIC(12,2) NOT NULL DEFAULT 0,
    supplier_inventory INTEGER NOT NULL DEFAULT 0,
    shipping_cost     NUMERIC(12,2) DEFAULT 0,
    shipping_time     TEXT,                       -- e.g. '3-5 days'
    last_updated      TIMESTAMPTZ DEFAULT now(),
    UNIQUE (supplier_id, supplier_sku)
);

-- ── CUSTOMERS ──────────────────────────────────────────────
CREATE TABLE customers (
    id            UUID PRIMARY KEY DEFAULT gen_random_uuid(),
    email         TEXT UNIQUE NOT NULL,
    name          TEXT,
    shipping_addr JSONB,
    created_at    TIMESTAMPTZ DEFAULT now()
);

-- ── ORDERS ─────────────────────────────────────────────────
CREATE TABLE orders (
    id            UUID PRIMARY KEY DEFAULT gen_random_uuid(),
    order_number  TEXT UNIQUE NOT NULL,
    customer_id   UUID REFERENCES customers(id),
    items         JSONB NOT NULL,                 -- [{product_id,qty,unit_price}]
    retail_total  NUMERIC(12,2) NOT NULL DEFAULT 0,
    supplier_id   UUID REFERENCES suppliers(id),
    supplier_cost NUMERIC(12,2) DEFAULT 0,
    shipping_cost NUMERIC(12,2) DEFAULT 0,
    fees          NUMERIC(12,2) DEFAULT 0,
    profit        NUMERIC(12,2) DEFAULT 0,
    status        TEXT NOT NULL DEFAULT 'new',    -- new|paid|fraud_check|supplier_order|confirmed|shipped|delivered|cancelled|refunded
    tracking      TEXT,
    carrier       TEXT,
    created_at    TIMESTAMPTZ DEFAULT now(),
    updated_at    TIMESTAMPTZ DEFAULT now()
);

-- ── PRICE HISTORY ──────────────────────────────────────────
CREATE TABLE price_history (
    id         BIGSERIAL PRIMARY KEY,
    product_id UUID NOT NULL REFERENCES products(id) ON DELETE CASCADE,
    price      NUMERIC(12,2) NOT NULL,
    reason     TEXT,                              -- manual|auto|competitor|cost_change
    created_at TIMESTAMPTZ DEFAULT now()
);

-- ── INVENTORY HISTORY ──────────────────────────────────────
CREATE TABLE inventory_history (
    id                BIGSERIAL PRIMARY KEY,
    supplier_product_id UUID NOT NULL REFERENCES supplier_products(id) ON DELETE CASCADE,
    inventory         INTEGER NOT NULL,
    created_at        TIMESTAMPTZ DEFAULT now()
);

-- ── SUPPLIER PERFORMANCE ───────────────────────────────────
CREATE TABLE supplier_performance (
    id                 UUID PRIMARY KEY DEFAULT gen_random_uuid(),
    supplier_id        UUID NOT NULL REFERENCES suppliers(id) ON DELETE CASCADE,
    fulfillment_rate   NUMERIC(5,2) DEFAULT 100,
    avg_shipping_days  NUMERIC(6,2),
    cancellation_rate  NUMERIC(5,2) DEFAULT 0,
    stock_accuracy     NUMERIC(5,2) DEFAULT 100,
    return_rate        NUMERIC(5,2) DEFAULT 0,
    updated_at         TIMESTAMPTZ DEFAULT now()
);

-- ── PRICE RULES ────────────────────────────────────────────
CREATE TABLE price_rules (
    id          SERIAL PRIMARY KEY,
    min_cost    NUMERIC(12,2) NOT NULL DEFAULT 0,
    max_cost    NUMERIC(12,2),                    -- null = no upper bound
    markup_pct  NUMERIC(6,2) NOT NULL,
    min_margin_pct NUMERIC(6,2) DEFAULT 0,
    active      BOOLEAN DEFAULT true,
    created_at  TIMESTAMPTZ DEFAULT now()
);

-- ── AUDIT LOG ──────────────────────────────────────────────
CREATE TABLE audit_logs (
    id         BIGSERIAL PRIMARY KEY,
    actor      TEXT,
    action     TEXT NOT NULL,
    entity     TEXT,
    entity_id  TEXT,
    detail     JSONB,
    created_at TIMESTAMPTZ DEFAULT now()
);

-- seed default price rules (cost -> markup)
INSERT INTO price_rules (min_cost, max_cost, markup_pct) VALUES
 (0,     25,    50.00),
 (25,    100,   35.00),
 (100,   500,   25.00),
 (500,   NULL,  15.00);

CREATE INDEX idx_supplier_products_product ON supplier_products(product_id);
CREATE INDEX idx_orders_status ON orders(status);
CREATE INDEX idx_products_status ON products(status);
CREATE INDEX idx_price_history_product ON price_history(product_id);