Initial commit of akmon project

doc_mall/create_mall_subscription_tables.sql

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+-- Mall Software Subscription Tables
+-- PostgreSQL DDL; adjust schema name as needed (default public)
+
+-- Plans
+create table if not exists ml_subscription_plans (
+    id uuid primary key default gen_random_uuid(),
+    plan_code text not null unique,
+    name text not null,
+    description text,
+    features jsonb,
+    price numeric(12,2) not null,
+    currency text default 'CNY',
+    billing_period text not null check (billing_period in ('monthly','yearly')),
+    trial_days int default 0,
+    is_active boolean default true,
+    sort_order int default 0,
+    created_at timestamptz not null default now(),
+    updated_at timestamptz not null default now()
+);
+
+create index if not exists idx_ml_subscription_plans_active on ml_subscription_plans(is_active) where is_active = true;
+create index if not exists idx_ml_subscription_plans_sort on ml_subscription_plans(sort_order);
+
+-- User Subscriptions
+create table if not exists ml_user_subscriptions (
+    id uuid primary key default gen_random_uuid(),
+    user_id uuid not null,
+    plan_id uuid not null references ml_subscription_plans(id) on delete restrict,
+    status text not null default 'active' check (status in ('trial','active','past_due','canceled','expired')),
+    start_date timestamptz not null default now(),
+    end_date timestamptz,
+    next_billing_date timestamptz,
+    auto_renew boolean not null default true,
+    cancel_at_period_end boolean not null default false,
+    metadata jsonb,
+    created_at timestamptz not null default now(),
+    updated_at timestamptz not null default now()
+);
+
+create index if not exists idx_ml_user_subscriptions_user on ml_user_subscriptions(user_id);
+create index if not exists idx_ml_user_subscriptions_plan on ml_user_subscriptions(plan_id);
+create index if not exists idx_ml_user_subscriptions_status on ml_user_subscriptions(status);
+
+-- updated_at trigger helper (idempotent)
+create or replace function public.set_updated_at()
+returns trigger
+language plpgsql
+as $fn$
+begin
+  new.updated_at = now();
+  return new;
+end;
+$fn$;
+
+-- Recreate triggers safely
+drop trigger if exists trg_ml_subscription_plans_updated on ml_subscription_plans;
+create trigger trg_ml_subscription_plans_updated
+  before update on ml_subscription_plans
+  for each row execute function public.set_updated_at();
+
+drop trigger if exists trg_ml_user_subscriptions_updated on ml_user_subscriptions;
+create trigger trg_ml_user_subscriptions_updated
+  before update on ml_user_subscriptions
+  for each row execute function public.set_updated_at();
+
+-- Optional: basic RLS scaffolding (customize policies per project standards)
+-- alter table ml_user_subscriptions enable row level security;
+-- create policy rls_ml_user_subscriptions_owner on ml_user_subscriptions
+--   using (user_id::text = current_setting('app.user_id', true));
+
+-- Done