-- Enable UUID extension
create extension if not exists "uuid-ossp";

-- 1. USERS & PROFILES (Managed by Supabase Auth, but we can have a public profile)
create table if not exists public.profiles (
  id uuid references auth.users not null primary key,
  email text,
  full_name text,
  role text default 'Buyer',
  created_at timestamp with time zone default timezone('utc'::text, now()) not null
);

-- 2. INVENTORY (Products)
create table if not exists public.inventory (
  id uuid default uuid_generate_v4() primary key,
  created_at timestamp with time zone default timezone('utc'::text, now()) not null,
  name text not null,
  sku text,
  ean text,
  quantity integer default 0,
  avg_cost_brl numeric default 0,
  market_price_brl numeric default 0,
  last_supplier text,
  user_id uuid references auth.users
);

-- 3. SUPPLIERS
create table if not exists public.suppliers (
  id uuid default uuid_generate_v4() primary key,
  created_at timestamp with time zone default timezone('utc'::text, now()) not null,
  name text not null,
  contact text,
  rating integer default 0,
  last_purchase timestamp with time zone,
  user_id uuid references auth.users
);

-- 4. CUSTOMERS
create table if not exists public.customers (
  id uuid default uuid_generate_v4() primary key,
  created_at timestamp with time zone default timezone('utc'::text, now()) not null,
  name text not null,
  email text,
  phone text,
  city text,
  status text default 'Active', -- 'Active', 'Inactive', 'Prospect'
  total_purchased numeric default 0,
  user_id uuid references auth.users
);

-- 5. ORDERS
create table if not exists public.orders (
  id uuid default uuid_generate_v4() primary key,
  created_at timestamp with time zone default timezone('utc'::text, now()) not null,
  date timestamp with time zone,
  status text default 'Pending', -- 'Pending', 'Paid', 'Received', 'Cancelled'
  total_usd numeric default 0,
  total_brl numeric default 0,
  total_cost_with_overhead numeric default 0,
  estimated_profit numeric default 0,
  items jsonb, -- Stores the JSON array of items
  supplier_name text,
  user_id uuid references auth.users
);

-- 6. TRANSACTIONS (Financial)
create table if not exists public.transactions (
  id uuid default uuid_generate_v4() primary key,
  created_at timestamp with time zone default timezone('utc'::text, now()) not null,
  date timestamp with time zone,
  type text, -- 'Income', 'Expense'
  category text,
  amount numeric default 0,
  description text,
  user_id uuid references auth.users
);

-- 7. SETTINGS (Global Config)
create table if not exists public.settings (
  id uuid default uuid_generate_v4() primary key,
  created_at timestamp with time zone default timezone('utc'::text, now()) not null,
  updated_at timestamp with time zone default timezone('utc'::text, now()),
  
  -- Company Info
  company_name text,
  cnpj text,
  ie text,
  
  -- Financial Defaults
  default_overhead numeric default 20,
  default_exchange numeric default 5.65,
  
  -- Integration Tokens
  brazil_api_token text,
  melhor_envio_token text,
  bling_token text,
  tiny_token text,
  gemini_key text,
  
  -- Fiscal / NFe
  certificate_password text, -- CAUTION: Storing plain text/base64? Ideally encrypted.
  nfe_serie text default '1',
  nfe_number text,
  nfe_environment text default 'homologacao',
  
  -- Email SMTP
  smtp_host text,
  smtp_port text,
  smtp_user text,
  smtp_pass text,
  
  -- Automation
  auto_sync_sales boolean default true,
  auto_sync_stock boolean default true,
  
  user_id uuid references auth.users
);

-- RLS POLICIES (Optional but recommended)
alter table public.inventory enable row level security;
alter table public.suppliers enable row level security;
alter table public.customers enable row level security;
alter table public.orders enable row level security;
alter table public.transactions enable row level security;
alter table public.settings enable row level security;
-- (Policies would need to be added to allow read/write for authenticated users)