implement paywall (#161)

* implement core foundation

* inject deps

* fix incorrect migration

* tail migration

* use transaction for migration

* fix: inject deps for tests

* cleanup billing management for admin

* upgrade stripe sdk to v85

* set price env variables

* cleanup billing management

* allow multiple dev windows

* fix: settings scroll

* feat: show nice video thumbnail in listview

* feat: implement freemium restrictions

* remove unnecessary comments

* refactor

* docs

* format

* tweak network settings better hierarchy

go/migrations/000013_network_billing.down.sql

@@ -0,0 +1,6 @@
+BEGIN;
+
+DROP TABLE IF EXISTS network_subscriptions;
+DROP TABLE IF EXISTS network_stripe_customers;
+
+COMMIT;

go/migrations/000013_network_billing.up.sql

@@ -0,0 +1,28 @@
+BEGIN;
+
+CREATE TABLE network_stripe_customers (
+  network_id         TEXT PRIMARY KEY,
+  stripe_customer_id TEXT NOT NULL UNIQUE,
+  created_at         TIMESTAMPTZ NOT NULL DEFAULT NOW()
+);
+
+CREATE TABLE network_subscriptions (
+  id                     TEXT        PRIMARY KEY,
+  network_id             TEXT        NOT NULL REFERENCES network_stripe_customers(network_id) ON DELETE CASCADE,
+  stripe_customer_id     TEXT        NOT NULL,
+  status                 TEXT        NOT NULL,
+  price_id               TEXT        NOT NULL,
+  cadence                TEXT        NOT NULL,
+  quantity               INT         NOT NULL,
+  cancel_at_period_end   BOOLEAN     NOT NULL DEFAULT FALSE,
+  current_period_start   TIMESTAMPTZ NOT NULL,
+  current_period_end     TIMESTAMPTZ NOT NULL,
+  created_at             TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+  updated_at             TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+  CONSTRAINT network_subscriptions_cadence_check CHECK (cadence IN ('monthly', 'annual'))
+);
+
+CREATE UNIQUE INDEX idx_network_subscriptions_network_id
+  ON network_subscriptions (network_id);
+
+COMMIT;

go/migrations/000014_network_message_usage.down.sql

@@ -0,0 +1,5 @@
+BEGIN;
+
+DROP TABLE IF EXISTS network_message_usage;
+
+COMMIT;

go/migrations/000014_network_message_usage.up.sql

@@ -0,0 +1,11 @@
+BEGIN;
+
+CREATE TABLE network_message_usage (
+  network_id    TEXT        NOT NULL REFERENCES networks(id) ON DELETE CASCADE,
+  usage_date    DATE        NOT NULL,
+  message_count INTEGER     NOT NULL DEFAULT 0,
+  updated_at    TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+  PRIMARY KEY (network_id, usage_date)
+);
+
+COMMIT;