feat: implement Business OS modules for proposals, invoices, and subscriptions with database schema and UI components

supabase/migrations/0004_add_business_os_tables.sql

@@ -0,0 +1,94 @@
+-- 0004: Faz 6 - Freelancer Business OS Tables
+
+-- 1. Proposals
+create table if not exists public.proposals (
+  id uuid default uuid_generate_v4() primary key,
+  user_id uuid references auth.users(id) on delete cascade not null,
+  client_id uuid references public.clients(id) on delete set null,
+  project_id uuid references public.projects(id) on delete set null,
+  title text not null,
+  description text,
+  amount numeric(12,2) not null default 0,
+  currency text default 'TRY'::text,
+  status text default 'draft'::text check (status in ('draft', 'sent', 'accepted', 'rejected')),
+  valid_until timestamp with time zone,
+  created_at timestamp with time zone default timezone('utc'::text, now()) not null,
+  updated_at timestamp with time zone default timezone('utc'::text, now()) not null
+);
+
+-- 2. Contracts
+create table if not exists public.contracts (
+  id uuid default uuid_generate_v4() primary key,
+  user_id uuid references auth.users(id) on delete cascade not null,
+  proposal_id uuid references public.proposals(id) on delete set null,
+  client_id uuid references public.clients(id) on delete set null,
+  title text not null,
+  content text,
+  status text default 'draft'::text check (status in ('draft', 'active', 'completed', 'cancelled')),
+  signed_at timestamp with time zone,
+  created_at timestamp with time zone default timezone('utc'::text, now()) not null,
+  updated_at timestamp with time zone default timezone('utc'::text, now()) not null
+);
+
+-- 3. Invoices
+create table if not exists public.invoices (
+  id uuid default uuid_generate_v4() primary key,
+  user_id uuid references auth.users(id) on delete cascade not null,
+  client_id uuid references public.clients(id) on delete set null,
+  project_id uuid references public.projects(id) on delete set null,
+  invoice_number text not null,
+  amount numeric(12,2) not null default 0,
+  tax_rate numeric(5,2) default 0, -- percentage
+  currency text default 'TRY'::text,
+  status text default 'draft'::text check (status in ('draft', 'sent', 'paid', 'overdue', 'cancelled')),
+  issue_date timestamp with time zone default timezone('utc'::text, now()),
+  due_date timestamp with time zone,
+  paid_at timestamp with time zone,
+  created_at timestamp with time zone default timezone('utc'::text, now()) not null,
+  updated_at timestamp with time zone default timezone('utc'::text, now()) not null
+);
+
+-- 4. Subscriptions
+create table if not exists public.subscriptions (
+  id uuid default uuid_generate_v4() primary key,
+  user_id uuid references auth.users(id) on delete cascade not null,
+  name text not null,
+  amount numeric(12,2) not null default 0,
+  currency text default 'TRY'::text,
+  billing_cycle text default 'monthly'::text check (billing_cycle in ('monthly', 'yearly', 'weekly')),
+  next_billing_date timestamp with time zone,
+  status text default 'active'::text check (status in ('active', 'cancelled')),
+  category text, -- e.g., 'software', 'hosting', 'marketing'
+  created_at timestamp with time zone default timezone('utc'::text, now()) not null,
+  updated_at timestamp with time zone default timezone('utc'::text, now()) not null
+);
+
+-- Enable RLS
+alter table public.proposals enable row level security;
+alter table public.contracts enable row level security;
+alter table public.invoices enable row level security;
+alter table public.subscriptions enable row level security;
+
+-- Proposals RLS
+create policy "Users can view their own proposals" on public.proposals for select using (auth.uid() = user_id);
+create policy "Users can insert their own proposals" on public.proposals for insert with check (auth.uid() = user_id);
+create policy "Users can update their own proposals" on public.proposals for update using (auth.uid() = user_id);
+create policy "Users can delete their own proposals" on public.proposals for delete using (auth.uid() = user_id);
+
+-- Contracts RLS
+create policy "Users can view their own contracts" on public.contracts for select using (auth.uid() = user_id);
+create policy "Users can insert their own contracts" on public.contracts for insert with check (auth.uid() = user_id);
+create policy "Users can update their own contracts" on public.contracts for update using (auth.uid() = user_id);
+create policy "Users can delete their own contracts" on public.contracts for delete using (auth.uid() = user_id);
+
+-- Invoices RLS
+create policy "Users can view their own invoices" on public.invoices for select using (auth.uid() = user_id);
+create policy "Users can insert their own invoices" on public.invoices for insert with check (auth.uid() = user_id);
+create policy "Users can update their own invoices" on public.invoices for update using (auth.uid() = user_id);
+create policy "Users can delete their own invoices" on public.invoices for delete using (auth.uid() = user_id);
+
+-- Subscriptions RLS
+create policy "Users can view their own subscriptions" on public.subscriptions for select using (auth.uid() = user_id);
+create policy "Users can insert their own subscriptions" on public.subscriptions for insert with check (auth.uid() = user_id);
+create policy "Users can update their own subscriptions" on public.subscriptions for update using (auth.uid() = user_id);
+create policy "Users can delete their own subscriptions" on public.subscriptions for delete using (auth.uid() = user_id);